HomeMy WebLinkAbout2022-3-2 Appendix 1 HistoricCity of Iowa City
Senior Center Assessmentand Master Plan
Appendix 1: Exterior Historic Assessment
March 2, 2022
Exterior Historic Assessment Table of Contents - 1
The Center – Iowa City, Iowa Preliminary Report
THE CENTER – THE OLD POST OFFICE
Iowa City, Iowa
EXTERIOR HISTORIC ASSESSMENT
PRELIMINARY REPORT
TABLE OF CONTENTS
Administrative Data ……………………………………………………………………………………...A-1
Developmental History …………………………………………………………………………………..B-1
Preliminary Architectural Conditions Assessment.....………………………………………………………C-1
Cost Estimate………………………………....………………………………………………………D-1
Drawings with reference notations for piers and courses….…………..…………………………..……..Appendix A
Photographic Survey – East Elevation…………………..….…………….…………...………………. Appendix B
Photographic Survey – North Elevation………..………..….…………….…………...………………. Appendix C
Photographic Survey – West Elevation………...…………..….…………….…………...……………. Appendix D
Photographic Survey – South Elevation………..…………..….…………….…………...……………. Appendix E
Exterior Historic Assessment Administrative Data – B-1
The Center – Iowa City, Iowa
Administrative Data
Location Data:
Building Name: Old Post Office (former Main Post Office)
Building Address: 28 South Linn Street, Iowa City, Johnson County, Iowa
Cultural Resource Data:
National Register of Historic Places: On April 17, 1979, the building was added to the National Register of
Historic Places. National Register System Identification – 79000905
Period of Significance:
The Period of Significance for the Old Post Office are two specific years: 1904 and 1931. The former is the
original Post Office Construction on site and the latter, the completion of the major expansion project.
Proposed Treatment and Use:
The Old Post Office served as the central Post Office for Iowa City from 1904 until 1975. It underwent a
substantial adaptive re-use project from 1977 through 1981 has been in constant use as the Iowa City Senior
Center since. The proposed use is a continuation of the Senior Center/Community Center occupancy.
The treatment is to preserve The Old Post Office as it has evolved, with the goal of extending its already
impressive endurance well into the 21st century.
Project Background:
The Franks Design Group, PC was included as a historic preservation consultant with the proposal team
submitted by OPN Architects to perform an assessment and master plan for The Center. The work included in
this report is intended to cover the building’s exterior historic fabric.
Exterior Historic Assessment Developmental History B- 1
The Center –Iowa City, Iowa
Developmental History
Built of Indiana Limestone in 1904, the post office was expanded in 1931. It remained the city's central post office
until 1975, when a new facility was built. After two years of vacancy, it was bought by the Iowa City/Johnson County
Senior Center; it was selected over other sites due to its central location. On April 17, 1979, midway through the
renovation, the building was listed on the National Register of Historic Places.
Episode One:
Original Post Office was constructed in 1904 with a footprint of 50’ x 90’. The building was sited at the corner of the
block with the primary 5-bay elevation facing south and enfronting East Washington Street. The building was a tall
one-story structure with an upper attic story in a Mansard Roof with circular windows in dormers.
Exterior Historic Assessment Developmental History B- 2
The Center –Iowa City, Iowa
Episode Two:
The Post Office was expanded significantly in 1931 more than doubling the original of 50’ x 90’ to the current 130’ x
90’. The building’s site position at the corner of the block remained, with all expansion to the north. The original
primary 5-bay elevation facing south became a secondary elevation and the west elevation enfronting Linn Street
became the primary elevation. The Linn Street Elevation expanded from three bays to seven bays.
The building was expanded vertically, with a full stone-walled upper level replacing the former Mansard Roof.
Construction photos and historic drawings indicate that the portions of the exterior walls were retained in-situ,
however virtually the entire structural system and all existing interior constriction within the original footprint area
were removed and replaced in the scope of the 1931 addition.
Exterior Historic Assessment Developmental History B- 3
The Center –Iowa City, Iowa
Episode Three:
Between 1977 and 1981 the building was extensively rehabilitated at the interior to accommodate the Iowa City
Senior Center. This work included new systems throughout, installation of a passenger elevator, installation of two
new internal new fire stairs, and interior reconfiguration based on the new occupancy. The building’s exterior was
largely unchanged in the scope of this work. New stone cladding to match the original was installed at the fire stair
bay (area formerly window within the arched opening), but this work was very sensitive to the historic character.
Subsequent work: Information distributed in preparation for this assessment includes several smaller projects
undertaken in the years sine the Senior Center was first in use in 1981.
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Exterior Historic Assessment Architectural C - 1
The Center – Iowa City, Iowa
HISTORIC CONDITIONS ASSESSMENT
Methodology
On 21 September 2020, Pete Franks, AIA of The Franks Design Group, PC spent the day surveying the exterior of the Iowa
City Senior Center. Using a manlift, observations as close as arm’s length to the exterior surface across most areas of the
exterior were made make and document the existing conditions.
The oldest section of the building was constructed in 1904, however most of the existing construction was completed in
1930 when a very substantial addition project was executed. This project added a full upper wall (previously a mansard
roof) and expanded the footprint nearly three times the original. When this project was executed the original building was
open to the sky, so only sections of the original exterior wall have remained in-situ since the 1904 first construction
episode.
Historic drawings, more recently generated information and photographs of the existing building were prepared for field
and diagrammatic use. Each surface of the full-height exterior wall was observed from a power lift allowing assessment
from a closer distance and many areas were observed from an arms’ length. On-site assessment began at the east wall,
north of the Ecumenical Towers structure and continued generally counter-clockwise around the building’s exterior. An
extensive photographic survey was made capturing detailed images of all areas of the exterior. Access to the lower roof
and the light well walls was not gained, so observation of these areas is more general.
The Exterior segmented for analysis by the building elevation on which it appears and numerically by the architectural pier
and bay language, using numbers in the north-south direction and letters in the east-west direction. Looking at the historic
front (west) elevation the first pier at the building’s northwest corner is grid #1 and the second pier to the south is #2.
The wall area between these is bay W-1-2 (west elevation between grid one and two).
Construction
As the chronology section describes, the Old Post Office has a rich history. The original 1904 construction was a much
smaller footprint than the expanded 1930 expansion. Historic drawings and construction photos indicate that there were
some segments of original 1904 exterior wall that remained in-situ and were integrated into the expanded 19030 footprint,
but most of the exterior that is visible today was added in 1930.
From a structural perspective, the Old Post Office is a hybrid building. The exterior walls are load bearing masonry walls
of brick and limestone veneer. Steel beams and freestanding steel columns installed as part of the 1930 project form the
balance of the superstructure. Spanning elements for elevated floors and roof areas are wood framed with dimensional
lumber joists oriented east-west.
The focus on this assessment is the historic exterior, so construction of the exterior walls was examined closely. The 1930
drawings indicate that the bottom three courses of stone, near exterior grade, were to be granite. The portions of the
original 1904 building walls appear to have been constructed with limestone at these lower courses. There is no granite
at these lower courses.
Exterior Historic Assessment Architectural C - 2
The Center – Iowa City, Iowa
There are a total of 33 stone courses ascending from grade to the top course at the parapets. The vertical chimney structure
at the building’s northeast corner extends vertically an additional eight feet and adds and additional six stone courses. The
typical stone module at much of the elevation is 16 ¾” which corresponds to six brick courses for the backup brick. The
thickness of the limestone varies from course to course. The thinnest areas of limestone veneer are a nominal 4” in
thickness. The main cornice element is a stone section that projects out more than 2 feet and the solid limestone profile
of these elements is 4’ – 3” in total depth.
Overall masonry wall thickness at the basement areas is 2’ – 6”, comprised of 8” of brick and 1’ – 10” deep blocks of
limestone. At the main level, the typical masonry wall thickness is 12” comprised of 8” brick and 4” of limestone veneer.
At the upper level, the typical masonry wall thickness is also 12” comprised of 8” brick and 4” of limestone veneer. The
limestone is shaped to achieve the depth and profile seen at the exterior, so there are many stone veneer panels which are
deeper. A detail note on the 1930 drawings also indicate that 8” deep bonding courses occur. These would typically be
every 3rd stone course but there is no additional information or known documentation to confirm this.
Observations and conditions warranting treatment
The following items were noted:
A. Exterior Limestone veneer, generally:
a. Joints at limestone panels and blocks have been variously repaired over time including multiple
iterations of grinding and repointing and installation of elastomeric sealants Mortar at a great many
limestone joints is failing or is no longer bridging the full width of the joint.
b. Erosion vary widely from panel to panel. The natural variations in the Bedford Limestone veneer are
evident with some stone panels and elements showing substantial surface erosion from general
exposure over the decades, while most of the panels retain good integrity and the original milled surface
texture. The highly eroded panels are more absorptive and will likely deteriorate more rapidly, as
compared to the balance of the surrounding stone panels, due to freeze-thaw action. The 6+ year
recommendation includes long-term remove/replace for Limestone that is compromised by fracturing
and erosion.
c. Some limestone blocks and panels have fractures, spalling, erosion, stress cracks and other issues.
i. Recommendations and treatment options considered for the above:
1. Immediate: Spot point masonry to eliminate open pathways for water infiltration.
Monitor the limestone veneer panels for evidence of active movement.
2. 3-5 years: Implement a comprehensive masonry restoration project, including
pointing all joints and grinding and pointing all fractures determined to be static.
Exterior Historic Assessment Architectural C - 3
The Center – Iowa City, Iowa
3. 6+ years: Conduct periodic inspection of masonry surfaces to verify that joints remain
fully bridged and no obvious pathways for water infiltration exist. Remove and replace
limestone veneer panels that are fractured or eroded.
B. Parapet concerns:
a. Parapet walls out of plumb, significantly in some locations, and leaning outward. The causation of this
issue is not known and freeze-thaw action, structural movement below, and unbraced rigidity are among
the suspected causation sources.
b. Common brick at the back face of parapet walls shows mortar failure and other moisture-related
deterioration.
c. Open parapet balustrade caps (precast concrete – circa 1970? installation date unknown) are failing
from water infiltration and freeze-thaw disintegration.
d. Individual limestone baluster elements are eroded and approximately 25% appear to have fractures
and/or prior repairs.
e. Parapet movement at corners is evident in the brick backup and especially the limestone cladding.
i. Recommendations and treatment options considered to address the parapet issues, above:
1. Immediate: Spot point masonry to eliminate open pathways for water infiltration.
Monitor the parapet segments for evidence of active movement and investigate to
determine causation.
2. 3-5 years: Dismantle parapets and reconstruct to correct for determined causation.
Re-use existing limestone as condition warrants, fabricate and install new stone where
fractured or substantially eroded. Balustrade caps and balusters are the most
perishable existing elements and should be replaced with new elements to duplicate
the originals.
C. Specific stone issues:
a. Limestone block arches have shifted and dropped significantly at two west (front) arched openings.
Causation of this issue is unknown and further investigation is warranted to determine if this movement
is limited to the stone facing delaminating from the brick backup or whether there is a more complicated
structural issue involved.
i. Recommendations and treatment options considered:
1. Immediate: Spot point masonry to eliminate open pathways for water infiltration.
Monitor the arch segments for evidence of active movement and investigate to
determine causation. Whether this is movement just at the limestone veneer, or if the
brick backup masonry also has failure and movement will determine the extent of
repair needed.
Exterior Historic Assessment Architectural C - 4
The Center – Iowa City, Iowa
2. 3-5 years: Correct for determined causation.
b. Limestone panels above main arches show fractures above several arches.
i. Recommendations and treatment options considered:
1. Immediate: Spot point masonry to eliminate open pathways for water infiltration.
Monitor the limestone veneer panels for evidence of active movement.
2. 3-5 years: Implement a comprehensive masonry restoration project, including
pointing all joints and grinding and pointing all fractures determined to be static.
3. 6+ years: Conduct periodic inspection of masonry surfaces to verify that joints remain
fully bridged and no obvious pathways for water infiltration exist. Remove and replace
limestone veneer panels that are fractured or eroded.
c. The deep stone panel cornice (course 21) has a broad sky-facing horizontal exposure. The top face of
the cornice is 24”-27” deep and is sloped to drain at the exterior vertical face. The top face is eroded,
collects drifted snow and ice, and collects airborne soils. The cornice does not have a drip edge in the
stone profile, so surface water tends to cling to the face and track soils with it. First impressions of the
building are formed, and informed, by this staining. When the building was young, the milled surface
of the cornice would have been smoother and water repellent. With decades of exposure and saturation
the surface has become more porous. Recommendations and treatment options considered:
1. Immediate: Spot point masonry to eliminate open pathways for water infiltration.
2. 3-5 years: Implement a comprehensive masonry restoration project, including
pointing all joints and grinding and pointing all fractures determined to be static.
3. 6+ years: Install a new metal or composite top panel superimposed over the top
surface of the cornice, which incorporates a drip edge so the building will more readily
shed water, rather than it clinging to the building face. This can be done in a manner
that has minimal impact of the building’s overall historic character and with minimal
permanent effect on the historic fabric (very long-term reversibility).
D. Elastomeric sealants, where appropriately used, have failed - creating open pathways for moisture infiltration.
a. The exterior limestone is a porous and absorptive material. Joints between stone elements should use
a soft mortar that closely matches the physical properties of the stone itself, so far as physical hardness,
expansion/contraction, and absorbency. As with historic brick, the use of a conventional masonry mortar
that is harder than the stone can impeded expansion and respiration and result in spalling and other
damage at the stone area adjacent to the mortar. Elastomeric sealants should be used where dissimilar
materials abut the stone. Otherwise, stone joints should be pointed and/or packed with appropriate
mortar that matches the physical properties and the color and texture of the stone.
Exterior Historic Assessment Architectural C - 5
The Center – Iowa City, Iowa
E. Built-up wood window frame elements are not adequately protected with joint sealants and paints. These
are important character-defining elements of the building’s historic fabric and should be repaired and
preserved.
i. Recommendations and treatment options considered:
1. Immediate: Prep and paint the historic wood elements and apply sealants where the
wood materials abut dissimilar materials.
2. 3-5 years: When the windows are being replaced with new insulating units, a repair
and restoration project should be incorporated. Any moisture deteriorated wood
should be repaired using epoxy-based repair products.
3. 6+ years: Periodically inspect the historic wood elements for signs of paint/sealant
failure and potential moisture infiltration. Properly maintained, these elements can
have nearly unlimited durability.
F. Built-up wood window sills, carved wood scrolling brackets below the sills and raised panel areas below the
sills frame elements are not adequately protected with joint sealants and paints. The sills have been covered
with pre-finished sheet metal. The condition of the underlying wood is unknown. These are important
character-defining elements of the building’s historic fabric and should be repaired and preserved.
i. Recommendations and treatment options considered:
1. Immediate: Prep and paint the historic wood elements and apply sealants where the
wood materials abut dissimilar materials.
2. 3-5 years: Investigate whether the sheet metal can be removed from the sills. The
potential for condensation moisture to become trapped between the metal and the
wood exists. This can lead to rapid wood deterioration concealed from view. Any
moisture deteriorated wood should be repaired using epoxy-based repair products.
3. 6+ years: Periodically inspect the historic wood elements for signs of paint/sealant
failure and potential moisture infiltration. Properly maintained, these elements can
have nearly unlimited durability.
The Center - The Old Post Office; Iowa City, Iowa Cost estimating for exterior historic fabric
Full exterior
ITEMS Reference
stone courses QUANTITY UNIT
IMMEDIATE
REPAIRS
RECOMMENDED
3-5 YEAR REPAIRS
RECOMMENDED
6+ YEAR REPAIRS
RECOMMENDED REMARKS
Flue enclosure - Limestone areas 34-39 134 SF Face
Flue enclosure at northeast corner of building. Area, this row, is all 4 faces. Repair and
point.
1,540.71$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
6,281.25$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
3,341.63$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area.
Flue enclosure - Louver areas 36-37 40 SF Face
Existing copper louvers east and west face. Repair and refurbish.
353.78$ Inspect for secure attachment and install sealant where copper meets adjacent stone.
3,630.00$ Remove, restore and re-install louvers.
Solid upper wall/Parapet 29-33 652 SF Face
Solid parapet areas - brick backup with stone veneer, stone caps and stone returns.
7,496.60$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints. Investigate causation.
216,790.00$
Dismantle existing parapet and reconstruct. Re-use limestone panels as possible estim
33% new limestone.
Balustrade upper wall/Parapet 29-32 580 SF Face
Cap segments, course 32, above individual balusters, open between balusters. 200 total
individual balusters.
7,694.72$
Spot point open joints at curb to eliminate open pathways for water infiltration. Inspect and
stabilize balustrade elements.
231,420.00$ Dismantle existing parapet and reconstruct. Assumes new stone balusters, curb and caps.
Belt and upper cornice 28-29 894 SF Face
Horizontal water table belt and upper cornice.
10,279.08$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
41,906.25$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
22,294.13$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area.
Upper Tier - Rusticated piers and corners 22-27 565 SF face
Rusticated piers and corner areas with reveals at each course.
7,470.73$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
30,457.03$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
16,203.14$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area.
Upper Tier - Plain faced stone areas 22-27 1230 SF Face
Plain-faced stone wall areas above main cornice.
14,142.36$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
57,656.25$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
30,673.13$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area.
Belt and Main cornice 20-21 1143 SF Face
Horizontal water table belt and main cornice.
Copyright 2021 The Franks Design Group, PC - Preservation Architects. All rights reserved.
The Center - The Old Post Office; Iowa City, Iowa Cost estimating for exterior historic fabric
13,142.04$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
53,578.13$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
114,071.26$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area. Install impervious covering and drip edge at top and front face
of main cornice to address long term erosion and surface staining.
Main Tier - Rusticated piers and corners 4-19 1287 SF Face
Rusticated piers and corner areas with reveals at each course.
17,017.39$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
69,377.34$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
36,908.75$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area.
Main Tier - Plain faced stone areas 4-19 4523 SF Face
Plain-faced stone areas, including arches and opaque areas within arch openings.
52,004.78$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
212,015.63$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
166.25$
Remove and replace limestone veneer panels where erosion and/or fracturing warrant.
Estimated at 15% of area.
Main Tier openings 1584 SF Face
At arched openings, where primary historic wood framing exists.
5,603.88$ Prep and paint wood elements.
11,207.75$ Carpentry repairs at historic wood elements, when windows are replaced.
22,415.50$ Remove sheet metal at exterior sills, repair exposed wood surfaces and prep & paint.
Lower Tier - Plane faced stone areas 1-3 1686 SF Face
Plain-faced stone areas below lower water table near grade
19,385.38$
Spot point open joints to eliminate open pathways for water infiltration. Estimated at 15-
20% of joints.
79,031.25$
Full masonry restoration - grind all bed and head joints and point. Grind and point all
visible fractures.
70,074.38$
Resurface limestone face where erosion and/or fracturing warrant. Estimated at 25% of
area.
Additional & miscellaneous items and
tasks
Exterior Sconces by entry doors 4 ea. 15,960.00$ Repair and refurbish historic sconces by historic entry doors
SUMMARY
Full exterior
IMMEDIATE
REPAIRS
RECOMMENDED
3-5 YEAR REPAIRS
RECOMMENDED
6+ YEAR REPAIRS
RECOMMENDED
Total Project Cost Estimate 156,131.43$ 1,009,720.88$ 335,738.15$
Copyright 2021 The Franks Design Group, PC - Preservation Architects. All rights reserved.
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—1
S-13
Grid A
South elevation upper tier—
1 in a series of 4
S-15
Grid B
South elevation upper tier—
3 in a series of 4
S-14
Grid A-B
South elevation upper tier—
2 in a series of 4
S-16
Grid C
South elevation upper tier—
4 in a series of 4
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—2
S-54
Grid A
South elevation middle tier—
1 in a series of 4
S-56
Grid B
South elevation upper tier—
3 in a series of 4
S-55
Grid AB
South elevation upper tier—
2 in a series of 4
S-57
Grid BC
South elevation upper tier—
4 in a series of 4
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—3
S-53
Grid E
South elevation
S-52
Grid EF
South elevation
S-51
Grid F
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—4
S-58
Grid CDE
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—5
S-59
Grid AB
South elevation
S-60
Grid ABC
South elevation
S-61
Grid BC
South elevation
S-11
Grid EF
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—6
S-62
Grid BC
South elevation
S-63
Grid BC
South elevation
S-61
Grid BC
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—7
S-2
Grid A
South elevation
S-3
Grid A
South elevation
S-7
Grid A
South elevation
S-6
Grid A
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—8
S-4
Grid A
South elevation
S-5
Grid A
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—9
S-19
Grid C
South elevation
S-8
Grid C
South elevation
S-9
Grid AB
South elevation
S-10
Grid AB
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—10
S-22
Grid AB
South elevation
S-24
Grid E
South elevation
S-20
Grid E
South elevation
S-21
Grid AB
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—11
S-25
Grid E
South elevation
S-26
Grid E
South elevation
S-27
Grid E
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—12
S-28
Grid EF
South elevation
S-29
Grid F
South elevation
S-31
Grid F
South elevation
S-33
Grid EF
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—13
S-34
Grid F
South elevation
S-35
Grid EF
South elevation S-36
Grid EF
South elevation
S-37
Grid EF
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—14
S-39
Grid ABC
South elevation
S-39
Grid DEF
South elevation S-41
Grid CD
South elevation
S-42
Grid CD
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—15
S-43
Grid EF
South elevation
S-44
Grid EF
South elevation S-45
Grid DE
South elevation
S-48
Grid D
South elevation
The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix E: Existing Conditions Photo Survey South Elevation—16
S-49
Grid EF
South elevation
S-50
Grid F
South elevation
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—1
W-4
Grid 1
West elevation upper tier
Upper corner of West facing
parapet showing courses 31,
32 & 33. The displacement of
stones from parapet rotation
is readily discernible.
W-3
Grid 1-2
West elevation upper tier
View looking up at the upper
tier of the building at the
northwest corner.
W-6
Grid 1
West elevation upper tier
Detail at fractured course
#30 at northwest corner of
the building.
W-7
Grid 1
West elevation upper tier
Stepped corner pier parapet
area showing courses 30
through 33.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—2
W-9
Grid 1-2
West elevation upper tier
Detail showing top of upper
corners and lower area of
parapeted balustrade. The
chalk outlines a fracture
through the depth of the other
cornice, course 28.
W-8
Grid 1-2
West elevation upper tier
Face of main cornice, course
20, looking towards northwest
corner of the building.
W-1
Grid 1-2
West elevation upper tier
Detail at lower area of parapet
balustrade, course 30.
W-2
Grid 1-2
West elevation upper tier
Detail showing top of upper
corners and lower area of
parapeted balustrade. The
chalk outlines a fracture
through the depth of the other
cornice, course 28.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—3
W-17
Grid 1-2
West elevation upper tier
Upper tier, main cornice,
course 20, and above.
W-18
Grid 1
West elevation upper tier
Upper tier at northwest corner
of building, main cornice,
course 20, and above.
W-16
Grid 2
West elevation upper tier
Upper tier, main cornice,
course 20, and above.
W-15
Grid 2-3
West elevation upper tier
Upper tier, main cornice,
course 20, and above.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—4
W-13
Grid 3-4
West elevation upper tier
Upper tier, main cornice,
course 20, and above.
W-14
Grid 3
West elevation upper tier
Upper tier, main cornice,
course 20, and above.
W-10
Grid 4
West elevation upper tier
Upper tier, main cornice,
course 20, and above.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—5
W-20
Grid 1-2
West elevation middle tier
Arched opening with smaller
puncture window at bay 1-2.
W-19
Grid 1
West elevation middle tier
Northwest corner of building.
Main cornice, course 20, and
courses above and below.
W-21
Grid 2-3
West elevation middle tier
Arched opening with North
main entry doors.
W-22
Grid 2-3
West elevation middle tier
Arched opening with North
main entry doors.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—6
W-23
Grid 1
West elevation middle tier
Face of main cornice, course
20.
W-24
Grid 1
West elevation middle tier
Face of main cornice, course 20 at
northwest corner.
W-25
Grid 1
West elevation middle tier
Face of main cornice, course 20 near northwest corner. Chalk outlines
horizontal fracture.
W-26
Grid 1-2
West elevation middle tier
Oblique view of main cornice,
course 20 near northwest
corner, looking south. Very
little deflection is seen.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—7
W-27
Grid 2-3
West elevation middle tier
Underside of main cornice,
course 20, and quarter-round
trim below. Spalling from
saturation is evident at face
and bottom edge.
W-28
Grid 2-3
West elevation middle tier
Underside of main cornice, course
20, and quarter-round trim below.
Spalling from saturation is evident
at face and bottom edge.
W-29
Grid 2-3
West elevation middle tier
Quarter-round trim below main cornice, course 19. Staining below verti-
cal joint suggests water pathway.
W-30
Grid 2-3
West elevation middle tier
View down at north entry door
pediment and transom ele-
ments.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—8
W-32
Grid 3-4
West elevation middle tier
Face and underside of main
cornice, course 20, and quarter
-round trim below. Movement
at this vertical joint continues
down to the face stones below
and the arch blocks.
W-31
Grid 1-2
West elevation middle tier
View up at face of main cornice. Chalk outlines a fracture.
W-33
Grid 3-4
West elevation middle tier
View down at large window in
bay 3-4. Bare wood is visible
and should be repaired and
painted for long term protec-
tion.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—9
W-34
Grid 3-4
West elevation middle tier
View of keystone block,
course 17, at arch bay 3-4.
W-35
Grid 3-4
West elevation middle tier
View of fracture and staining below
main cornice, course 18. The
milled surface of the stone if very
evident in this image.
W-36
Grid 3-4
West elevation middle tier
View of the underside of the main cornice at the building’s west center-
line. The mortar joints at this area appear to have been repointed, but
there is separation between the mortar and the stone.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—10
W-43
Grid 1-2
West elevation middle tier
W-44
Grid 1
West elevation middle tier
W-42
Grid 2
West elevation middle tier
W-41
Grid 2-3
West elevation middle tier
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—11
W-38
Grid 4
West elevation middle tier
W-39
Grid 3-4
West elevation middle tier
W-37
Grid 4-5
West elevation middle tier
W-37
Grid 2-3
West elevation middle tier
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—12
W-48
Grid 4-5
West elevation upper tier
View at balustrade and cap, course 32. The cap segment at
parapet pier 5 is limestone. The general weathering and
erosion at the balusters is visible.
W-49
Grid 4-5
West elevation upper tier
View at balustrade and cap, course
32. The caps are precast concrete
replacements. Date of modification
unknown.
W-50
Grid 4-5
West elevation upper tier
Detail at face of upper cor-
nice , course 28. The erosion
at left is due to the variations
in the limestone material.
Both pieces appear to be
1930 stone. W-52
Grid 4-5
West elevation upper tier
Detail at face of upper cornice, course 28. Chalk outlines fractures.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—13
W-56
Grid 6-7
West elevation upper tier
Fractures and erosion at balusters.
W-57
Grid 6-7
West elevation upper tier
Upper cornice, course 28, and above.
W-59
Grid 7
West elevation upper tier
W-58
Grid 7
West elevation upper tier
View at balustrade and cap, course 32. The cap segment at left is precast concrete
while the profile engaged with the pier stones is limestone. Diagonal fracture visible.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—14
W-61
Grid 7-8
West elevation upper tier
W-60
Grid 7-8
West elevation upper tier
Open balustrade parapet. Caps, course 32, are 3 different types/ages.
W-63
Grid 8
West elevation upper tier
Shifting at course 32 by
southwest corner of parapet.
W-62
Grid 8
West elevation upper tier
Parapet pier at southwest corner of building. Significant shifting and movement is
discernable.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—15
W-65
Grid 8
West elevation upper tier
Shifting at courses 31 & 32 by southwest
corner of parapet has caused open joints
and flaking of limestone by joints.
W-66-68
Grid 8
West elevation upper tier
Parapet face out of plumb by
0.9, 3.2, & 2.3 degrees re-
spectively.
W-64
Grid 8
West elevation upper tier
Damage from shifting at
courses 31,
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—16
W-70
Grid 8
West elevation upper tier
Underside of upper cornice, course 28, near southwest corner of building.
W-69
Grid 8
West elevation upper tier
Face of upper cornice, course 28, at southwest corner of building.
W-72
Grid 7-8
West elevation upper tier
Just below upper cornice, at course 27, near southwest corner of
building. Spalling from face saturation and freeze-thaw action due
W-71
Grid 7-8
West elevation upper tier
Just below upper cornice, at course 27, near southwest corner of building. Spalling
from face saturation and freeze-thaw action due to open joint.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—17
W-73
Grid 7-8
West elevation upper tier
Joint at sky-facing face of
main cornice. Newer seal-
ant has failed and is partial-
ly missing.
W-75
Grid 7-8
West elevation upper tier
Face of main cornice, course 21.
W-75
Grid 7-8
West elevation upper tier
Underside of main cornice
where open joint and evi-
dence of water intrusion is
evident.
W-74
Grid 7-8
West elevation upper tier
Face of main cornice, course
21. Same location as above.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—18
W-77
Grid 7-8
West elevation upper tier
Face of upper cornice near southwest corner. Joint has
opened due to movement at parapet area, above.
W-77
Grid 7-8
West elevation upper tier
Face of upper cornice near southwest corner. Joint
has opened due to movement at parapet area, above.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—19
W-81
Grid 7-8
West elevation upper tier
Open vertical joint at upper
cornice.
W-82
Grid 6-7
West elevation upper tier
Oblique view at face of main cornice, looking south.
W-80
Grid 5-6
West elevation middle tier
View down at window frame.
W-84
Grid 5-6
West elevation middle tier
View down at window frame.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—20
W-107
Grid 5-6
West elevation middle tier
W-108
Grid 4-5
West elevation middle tier
W-106
Grid 6-7
West elevation middle tier
W-105
Grid 7-8
West elevation middle tier
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—21
W-93
Grid 6-7
West elevation middle tier
Stone arch segment at
opening has shifted con-
siderably. The causation is
not known and this war-
rants additional investiga-
tion.
W-89
Grid 6-7
West elevation middle tier
W-90
Grid 6-7
West elevation middle tier
W-92
Grid 6-7
West elevation middle tier
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—22
W-97
Grid 8
West elevation middle tier
Southwest corner of building.
W-94
Grid 6-7
West elevation middle tier
Fracture at course 19 above slipped arch stone.
W-96
Grid 7-8
West elevation middle tier.
Open joint at main cornice.
W-98
Grid 8
West elevation middle tier
Southwest corner of building.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—23
W-95
Grid 7-8
West elevation middle tier
View down at puncture window opening bay 7-8.
W-104
Grid 6-7
West elevation middle tier
Flaking paint and bare wood at historic door surround, south main entry.
W-102
Grid 7-8
West elevation middle tier
View down at puncture window opening bay 7-8.
W-101
Grid 7-8
West elevation middle tier
Fractured stone near window head. Course 13.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—24
W-113
Grid 2-3
West elevation lower tier
North cheek wall at north entry stairs at grade.
W-111
Grid 1-2
West elevation lower tier
Deep watertable at top of course 3 near grade.
W-109
Grid 2-3
West elevation lower tier
Limestone cheek walls at north entry stair.
W-112
Grid 2-3
West elevation lower tier
Courses 1,2 & 3 adjacent to north entry stairs at grade.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—25
W-115
Grid 3-4
West elevation lower tier
Courses 1,2 & 3 adjacent to north entry stairs at grade.
W-114
Grid 2-3
West elevation lower tier
South cheek wall at north entry stairs at grade.
W-117
Grid 5-6
West elevation lower tier
North cheek wall at south entry stairs at grade.
W-116
Grid 3-4
West elevation lower tier
Window at course 2.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix D: Existing Conditions Photo Survey West Elevation—26
W-119
Grid 6-7
West elevation lower tier
South entry stairs at grade.
W-118
Grid 6-7
West elevation lower tier
North cheek wall at south entry stairs at grade.
W-123
Grid 6-7
West elevation lower tier
South cheek wall at south entry stairs at grade.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—1
N-14
Grid F-E
North elevation upper tier
Photo includes upper tier of
building, courses 21 through
33 including parapet balus-
trade.
N-12
Grid F
North elevation upper tier
Photo shows flue enclosure,
course 34 through 36 extend-
ing above the balance of the
building.
N-15
Grid E
North elevation upper tier
Photo includes upper tier of
building, courses 21 through
33 including stepped solid
parapet above rusticated pier
expression.
N-16
Grid D
North elevation upper tier
Photo includes upper tier of
building, courses 21 through
33 including straight solid
parapet above solid wall be-
tween upper story windows.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—2
N-2
Grid F
North elevation
Detail showing top of stone
flue enclosure, course 39.
N-4
Grid F
North elevation
Photo looking down at edge
of intake air louver, courses
35 and 36.
N-6
Grid F
North elevation
Northeast corner of building. Detail photograph shows courses 30-34, including
open mortar joints and spalled stone.
N-5
Grid F
North elevation
Photo looking up at head of intake air louver, course 37.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—3
N-11
Grid E
North elevation
Photo at solid parapet showing 89 degrees, or 1
degree out of plumb, at course 30.
N-10
Grid E
North elevation
Photo at solid parapet showing 89 degrees, or 1 degree
out of plumb, at course 31.
N-9
Grid E
North elevation
Photo at solid parapet showing 87.7 degrees, or 2.3
degrees out of plumb, at course 33.
N-8
Grid E
North elevation
Photo at solid parapet segment where rota-
tion from plumb is visually discernible.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—4
N-26
Grid D
North elevation middle tier
Photo showing intersection of skywalk 2 the face of the old post office building
at course
N-25
Grid D
North elevation middle tier
Photo showing intersection of skywalk and the face of the Old Post Office build-
ing, at course 18.
N-27
Grid D
North elevation middle tier
Photo of parapet stone at course 30, showing substantial surface erosion. The surface
erosion across the faces of the building varies, highlighting the variation in the stone ma-
terials themselves.
N-28
Grid D
North elevation middle tier
Enlarged area of same panel at left.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—5
N-47
Grid B-A
North elevation upper tier
Photo showing upper story
window and balustraded par-
apet above, courses 20-33.
N-48
Grid B
North elevation upper tier
Photo showing rusticated en-
gaged pier at upper tier and
stepped parapet above, courses
20-33.
N-46
Grid A
North elevation upper tier
Northwest corner of building.
Photo showing rusticated
engaged pier at upper tier and
stepped parapet above.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—6
N-30
Grid B
North elevation
Photo at solid parapet area, course 29, showing
vertical face at 89.1 degrees or 0.9 degrees out of
plumb.
N-31
Grid B
North elevation
Photo at solid parapet area, course 30, showing
vertical face at 88.4 degrees or 1.6 degrees out of
plumb.
N-32
Grid B
North elevation
Photo at solid parapet area, course 31, showing
vertical face at 87.7 degrees or 2.3 degrees out of
plumb.
N-33
Grid B
North elevation
Photo at solid parapet area, courses 29 to 33, were rotation
out of plumb is visually discernible.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—7
N-38
Grid A
North elevation upper tier
Northeast corner of building.
Photo showing cap stone,
course 33, and course 32,
below, disengaged due to
parapet rotation.
N-37
Grid A
North elevation upper tier
Northeast corner of building.
Photo showing cap stone,
course 33, and course 32,
below, disengaged due to
parapet rotation.
N-39
Grid A
North elevation upper tier
Photo showing fracture at
course 31 and displacement
at course 32 due to parapet
rotation.
N-40
Grid B-A
North elevation upper tier
photo looking up at edge of
balustraded parapet area.
Balustrade cap, course 33, at
left appears to be a very new
replacement.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—8
N-42
Grid B-A
North elevation upper tier
Detail photo at upper cornice, course 28, showing spalling at vertical
joint
N-44
Grid B-A
North elevation upper tier
Detail photo looking up at
upper cornice course 28,
showing vertical joint deterio-
ration. The chalk line traces a
hairline fracture running verti-
cally through the entire
course.
N-46
Grid B-A
North elevation upper tier
Detail photo looking down at
upper cornice course 28,
showing vertical joint deterio-
ration. The chalk line traces a
hairline fracture running verti-
cally through the entire
course.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—9
N-64
Grid C
North elevation middle tier
Photo shows middle tier cours-
es 3-20 and the north entry
door.
N-63
Grid D-C
North elevation middle tier
Photo shows middle tier courses
3-20 and window opening in front
of the interior fire stair.
N-65
Grid C-B
North elevation upper tier
Photo shows middle tier
courses 3-20 and the north
entry door and 1980 entry
ramp.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—10
N-67
Grid B-A
North elevation middle tier
Photo shows middle tier,
courses 3-20. The engaged
rusticated pier at grid B, and
at the corner, grid A, brackets
the final bay of this elevation.
N-68
Grid B
North elevation middle tier
Photo shows middle tier, courses
3-20. The engaged rusticated pier
at grid B brackets the final bay of
this elevation.
N-66
Grid A
North elevation middle tier
Northwest corner of the build-
ing.
The engaged rusticated pier
at grid A brackets the final
bay of this elevation and turns
the corner.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—11
N-50
Grid C-B-A
North elevation middle tier
Edge view photo of the primary cornice, course 20, looking towards the north-
west corner. Surface spalling is visible at the cornice’s vertical face. There is
some evidence of rotation or other vertical movement discernable.
N-51
Grid C
North elevation middle tier
Edge view photo of the primary cornice, course 20, looking towards the skywalk.
Surface spalling is visible at the cornice’s vertical face.
N-49
Grid D-C
North elevation middle tier
Photo of the primary cornice, course 20, showing large area of surface
spalling from saturation and freeze-thaw action.
N-53
Grid C-B
North elevation middle tier
Underside edge view photo of the primary cornice, course 20,
looking towards the northwest corner.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—12
N-56
Grid D-C
North elevation middle tier
Photo at underside of arched opening. The primary window framing members
are historic (1930) and the glass and frame were installed in 1980.
N-55
Grid D-C
North elevation middle tier
Photo at underside of arched opening. The primary window framing members are
historic (1930) and the glass and frame were installed in 1980.
N-57
Grid D-C
North elevation middle tier
Photo at underside of arched opening. The primary window framing mem-
bers are historic (1930) and the glass and frame were installed in 1980.
N-54
Grid D-C
North elevation middle tier
Detail showing limestone veneer panel above arched opening, course
18, with vertical fracture.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—13
N-59
Grid D-C
North elevation middle tier
Detail view of window jamb and sill area.
N-58
Grid D-C
North elevation middle tier
Detail view of primary window frame at upper area of arched opening. The alumi-
num frame and insulating glass was installed in the 1980 renovation project for
the Senior Center while the painted wood is original to the building.
N-62
Grid D-C
North elevation middle tier
Detail photograph showing primary vertical window frame element intersection with
the horizontal sill surface. There is some evidence of moisture related deterioration in
this area, however given the age the condition is quite good.
N-79
Grid D-C
North elevation middle tier
Detail showing carved wood brackets under exterior window sill. It
appears that the sill has been wrapped with sheet metal, while the
1930 drawings indicate the sill as a solid wood element.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—14
N-70
Grid F-E
North elevation middle tier
Detail showing courses 4 through 7 adjacent to the northeast entry door. Adja-
cent to the concrete walking surface, there is surface deterioration and open
mortar joints from saturation. It is likely that snowmelt products used in this
area have also contributed to the deterioration.
N-69
Grid F
North elevation middle tier
Northeast corner of building.
Detail showing courses 4 through
7.
N-72
Grid F-E
North elevation middle tier
Detail showing courses 4
through 7 adjacent to the
northeast entry door. Surface
deterioration and open mortar
joints are discernable.
N-73
Grid F-E
North elevation middle tier
Close detail at courses 4 & 5 showing surface deterioration and delami-
nation of milled surface of limestone.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—15
N-80
Grid C-B
North elevation lower tier
View at ramp landing of northwest accessible entry door, including limestone
courses four and five. Extreme surface erosion due to saturation.
N-75
Grid D-C
North elevation lower tier
View looking adjacent to entry ramp including courses 3 through 8. Surface is
directly adjacent to the walking surface show moisture related deterioration.
N-81
Grid B-A
North elevation lower tier
Lower tier courses 1, 2 & 3 adjacent to vehicle parking.
N-82
Grid A
North elevation lower tier
Lower tier courses 1, 2 & 3 adjacent to vehicle parking.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix C: Existing Conditions Photo Survey North Elevation—16
N-80
Grid E-D-C
North elevation lower tier
View at ramp landing of
northwest accessible entry
door, including limestone
courses four and five. Ex-
treme surface erosion due to
saturation.
N-74
Grid E
North elevation lower tier
Limestone courses 2,3&4 at
landing of accessible ramp.
Open joints and surface dete-
rioration are from saturation
and freeze-thaw cycle.
N-77
Grid D-C
North elevation lower tier
Detail view at stone jam adjacent to large
arched opening. The spalling of the fine milled
surface of the limestone cladding is due to
saturation and freeze thaw action.
N-78
Grid D-C
North elevation lower tier
View at wood brackets on the under-
side of window sill. The sheet metal
covering the sill can be seen at the
underside.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—1
EN-5
Grid 3
East elevation North section
Upper tier elevation at grid 3
EN-44
Grid 3-2-1
East elevation North section
Overall view of North section
of East elevation
EN-6
Grid 3-2
East elevation North section
Upper tier elevation between
grids 3 & 2
EN-7
Grid 2
East elevation North section
Upper tier at grid 2
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—2
EN-9
Grid 1
East elevation North section
Upper tier at grid 1. North-
east corner of building. The
flue enclosure extends six
courses above the balance of
the building's exterior
EN-8
Grid 1
East elevation North section
Upper tier at grid 1. North-
east corner of building. Note
rusticated limestone veneer at
corner between main cornice
and upper cornice.
EN-10
Grid 2-1
East elevation North section
Upper tier at grid 2-1. The
darker cap elements above
the balustraded parapet is
newer (date unknown) precast
concrete elements at course
32.
EN-11
Grid 2
East elevation North section
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—3
EN-14
Grid 1
East elevation upper tier
Northeast corner of building. Detail showing open mortar joint at course 31 and
32. It appears that this area has been repointed with inappropriate mortar.
EN-13
Grid 1
East elevation upper tier
Northeast corner of building. Detail showing course 33 at the base of the flue
enclosure including a diagonal fracture.
EN-12
Grid 1
East elevation upper tier
Northeast corner of building. Detail showing loose mortar re-
moved by hand between courses 31 and 32.
EN-15
Grid 1
East elevation upper tier
Northeast corner of building. Detail showing loose bed and head
mortar by hand between courses 31 and 32.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—4
EN-19
Grid 1
East elevation upper tier
Northeast corner of building. Detail showing the horizontal joint above
the main cornice, course 20, and of course 21 above. The mortar has
been removed and the joint has been filled with elastomeric sealant.
EN-18
Grid 1
East elevation upper tier
Northeast corner of building. Detail showing the main
cornice, course 20, and of course 21 above
EN-20
Grid 1
East elevation upper tier
Northeast corner of building. Detail
showing the vertical joint in the main
cornice, course 20. The mortar has
been removed and the joint filled with
backer rod and elastomeric sealant.
EN-21
Grid 1
East elevation upper tier
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—5
EN-17
Grid 1
East elevation upper tier
Northeast corner of building.
Detail showing courses 17
and 18 including elastomeric
sealant at vertical joints.
EN-16
Grid 1
East elevation upper tier
Northeast corner of building.
Detail showing courses 19
and 20 including elastomeric
sealant at vertical and hori-
zontal joints.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—6
EN-23
Grid 3-2
East elevation upper tier
Main cornice, course 20, and immediate courses above and below.
EN-22
Grid 4-3
East elevation upper tier
Upper middle tier and main cornice, courses 16 through 20.
EN-24
Grid 3-2
East elevation upper tier
EN-25
Grid 1
East elevation upper tier
Main cornice, course 20, and immediate courses above and below. Note dete-
rioration and prior repair at the last segment of course 20, main cornice
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—7
EN-29
Grid 3-2
East elevation North section
Photo includes full middle
tier, courses for through 19.
The lighter toned stone is
newer and was installed with
the Senior Center conversion
project.
EN-30
Grid 4-3
East elevation North section
Photo includes full middle
tier, courses for through 19.
The lighter toned stone is
newer and was installed with
the Senior Center conversion
project.
EN-28
Grid 2-1
East elevation North section
Main cornice, course 20, and
immediate courses above and
below.
EN-27
Grid 1
East elevation North section
Main cornice, course 20, and
immediate courses above and
below.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—8
EN-39
Grid 2-11
East elevation middle tier
EN-38
Grid 4-3-2
East elevation middle tier
Photo shows bottom tier, through course 3, and the lower area of middle tier,
courses 4 through 8
EN-40
Grid 2-1
East elevation middle tier
Northeast corner of building. Photo shows bottom tier, through course 3, and the
lower area of middle tier, courses 4 through 7. Sheet metal hood over HVAC air
intake at former basement window opening.
EN-31
Grid 3-2
East elevation middle tier
Detail of lower water table, course 3, with loose and deteriorated previous stone re-
pair at horizontal surface above North exit door.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—9
EN-37
Grid 2
East elevation middle tier
Image looking up at under-
side of main cornice. Note
the machine tooled stone
finish at all surface of the
cornice except the underside.
The vertical joint between
cornice sections is mortar,
but has eroded significantly.
EN-33
Grid 4
East elevation middle
tier
Detail photo of Maine
cornice, course 20, and
quarter round below,
course 19, where these
elements abutt the adja-
cent high rise building
EN-36
Grid 3-2-1
East elevation middle tier
Horizontal view at underside
of main cornice showing
courses 17 through 20.
EN-34
Grid 4
East elevation middle tier
Detail photo of main cornice, course
20, and quarter round below, course
19, where these elements abutt the
adjacent high rise building. Note
different colored elastomeric seal-
ants in use at this area. The darker
staining in the area of the joint at the
underside suggests water infiltration
throughout the joint, from above.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—10
ES-3
Grid 8
East elevation upper tier
Near southeast corner of building. Photo shows upper cornice, course 28, and the balustraded parapet above. The balustrade caps
at the right of the image, course 32, are newer precast concrete replacements with considerable surface erosion and staining.
ES-4
Grid 8
East elevation upper tier
Southeast corner of building. Photo shows corner of building, grid 8,
including upper cornice, course 28, and the balustraded parapet above.
ES-6
Grid 8-7
East elevation upper tier
Photo shows upper cornice, course 28, and the balustraded para-
pet above as well as the intersection with the adjacent high rise
building.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—11
ES-13
Grid 8-7
East elevation middle tier
View looking up at the underside of the main courses including courses 14
through 20 between grid seven and eight.
ES-10
Grid 7
East elevation middle tier
Showing the intersection with the adjacent high rise building at courses 19 and
20.
ES-11
Grid 8-7
East elevation middle tier
Photo shows course 19 and course 20, the main cornice, including a prior stone
Patch at the edge of the cornice.
ES-14
Grid 7
East elevation middle tier
Southeast corner of building. View looking down, courses 3 through 7.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—12
ES-9
Grid 8
East elevation upper tier
View looking down, above main cornice. courses 20 through 23, showing the
southeast corner of the building and the main cornice wrapping the corner.
ES-7
Grid 8
East elevation middle tier
ES-8
Grid 7
East elevation upper tier
View looking down, above main cornice. courses 20 through 23, showing the
intersection with the adjacent high rise building.
The Center—The Old Post Office Exterior Historic Needs Assessment - Preliminary Report—Appendix B: Existing Conditions Photo Survey East Elevation—13
ES-18
Grid 8
East elevation lower tier
ES-16
Grid 8
East elevation lower tier
ES-17
Grid 2
East elevation lower tier