2012_Condition_Assessment_Report_(FOR_INFORMATION_ONLY)_0001.pdf

Report Narrative

15 State Street Boston, MA Façade Inspection

Vertical Access LLC PO Box 4135, Ithaca, NY 14852 Tel: 607 257 4049 / Fax: 607 257 2129

Vertical Access LLC (VA) was retained by Bargmann Hendrie + Archetype Inc.

(BH+A) to investigate and document the existing conditions of the exterior façades of 15 State Street in Boston. The scope of work for this survey included hands-on inspection of the north and east façades at 15 “drop” locations and documentation of existing conditions using a combination of annotated elevation drawings and still color photography. This inspection was conducted in response to a recent granite failure on the east façade.

VA technicians Kelly Streeter and Evan Kopelson were on-site July 16th and 17th, 2012 to investigate and document the conditions of the exterior façades using industrial rope access techniques. Peter Tilton of the National Park Service and Mike Lochiatto were on site to help with building access. Jack Glassman from BH+A visited the site July 17th to discuss initial findings.

Thirty one observed conditions were identified as “Priority 1”, which indicates a condition with a near-term public safety implication. Conditions such as incipient spalls, crack systems with significant displacement and failed patch repairs that have become dangerous receive this designation. Most of the Priority 1 conditions can be attributed to rusting steel at cramp locations or rusting structural beams and columns.

The northeast corner, in particular is in deteriorated condition with extensive crack systems and displacement of both original and replacement units observed.

Other, less severe conditions are noted as “Priority 2”. These conditions include cracks and crack systems without significant associated displacement, failed previous patch repairs and joint failures.

Conditions with no priority code assigned have no public safety or water infiltration implication and are aesthetic or observations only. These include soiling and general condition photographs.

The recommended repairs for the exterior of 15 State Street are grouped into two categories: Priority 1 repairs and Priority 2 repairs. Priority 1 repairs are those that represent a near-immediate public safety concern. Priority 2 repairs are less urgent but should be a part of any comprehensive repair campaign.

mmoffett Information Only

15 State Street, Boston, MA Report Narrative VA Project No. 12-1309 July 27, 2012

Priority 1 repairs include the removal of any displaced granite units at spandrel locations, scraping and painting of underlying steel and re-attachment of either existing or replacement units. Similarly, the removal of displaced and cracked corner units and the evaluation and treatment of the underlying steel structure and reattachment of either new or salvaged units is another significant Priority 1 repair.

Also, all identified Priority 1 incipient spalls should be mitigated and repaired.

Vertical Access recommends that the Priority 1 exterior repair program be completed prior to the sidewalk bridge being removed, and ideally before Fall 2012 as repairs are recommended prior to the next freeze-thaw cycle.

Priority 2 repairs include cleaning of atmospheric soiling, resealing of all window surrounds, repair and repainting of wood window frames, treatment of cast iron window elements, repair of the copper cornice, repair of new crack systems and previous failed crack repairs and patching of spall locations and re-patching of failed patch repairs. These repairs are less urgent in nature but should be completed as a part of a comprehensive preventative maintenance program.

This Report Narrative with supporting photographs, annotated AutoCAD elevation drawings and spreadsheet of extracted survey conditions constitute VA’s Condition Survey Report 15 State Street. A user’s manual for VA’s Tablet PC Annotation System (TPAS TM) is also included with the report. Digital copies of the Report Narrative, AutoCAD files, photographs, extracted condition quantities, and TPAS User’s Manual are provided on a compact disc.

Description of Deliverables

This Report Narrative includes a description of the project deliverables, the scope of work and an outline of the conditions noted during the inspection. Conditions documented by Vertical Access and described in the Report Narrative are based on VA’s Conditions Glossary. Examples of materials and conditions contained in Vertical Access’ Visual Conditions Glossary are available on our web site at http://www.vertical-access.com/glossary.html. Photographs illustrating representative and notable conditions observed during the investigation are cited in the Report Narrative. The last section of the Report Narrative includes conclusions and preliminary interpretations of the survey findings.

The Photographs section of the report includes images of representative and notable conditions taken during the survey using digital still cameras. Each of the photographs included in the report is hyperlinked to a condition code within the AutoCAD drawing so that it can be viewed easily as a digital file. Each photograph has a two-part name. The first part is specific numeric nomenclature (x-y coordinates) that corresponds to the coordinates within the AutoCAD drawing where the conditions are located. The second part of the photograph name gives the type of material and description of the condition documented. The Cartesian grid used to name the photographs is shown on the elevation drawings. For reference, the table below lists the x-coordinates of the elevation views:

X-Coordinate Elevation View Sheet

0 - 90 East (Devonshire Street) Sheet 1

110 - 170 North (State Street)

Sheet 2

Full-size 24” by 36” and reduced-scale 11” by 17” drawings are provided in the Annotated Drawings section, the third section of VA’s Condition Survey Report.

The annotated drawings document the condition of the exterior materials at the 15 State Street building. For base drawings for the survey, the National Park Service provided scans of elevation drawings for each building façade. VA inserted the exterior elevation files into a single AutoCAD drawing with each exterior elevation view placed to have a unique set of x-y coordinates.

Existing conditions were documented using VA’s Tablet PC Annotation System (TPASTM). TPAS allows direct input of survey information into an AutoCAD drawing so that there is no loss of information in the transfer of notes from paper to computer. The severity and amount of each condition was recorded in the field using AutoCAD, which streamlines the process of take-offs and the transformation of condition notes to construction documents. A spreadsheet of the survey quantities is included in printed form and as a digital file with this report.

TPAS utilizes a library of previously drawn fault code symbols to annotate digital survey drawings in the field. Each permutation of fault code is placed on a unique layer in the AutoCAD drawings to allow for easier manipulation and viewing of the survey data. The fault code symbols are part of an AutoCAD block library and are composed of a grouping of fault attributes:

Material Condition Type Severity Amount

When all of the information collected in the survey is shown on an elevation drawing, the printed drawing may become difficult to interpret due to the density of data and resolution of the printed drawings. Therefore, TPAS is optimized for digital analysis of survey data. The following processes can be used to better understand and interpret the conditions and material data.

1. Any TPAS symbol can be queried directly in AutoCAD.

2. Because each combination of material and fault condition is on a separate layer in AutoCAD, the survey data can be viewed selectively within AutoCAD by switching layers on and off and by constructing different combined layer “views.”

3. The numerical survey data can be extracted or exported from AutoCAD into spreadsheets or databases.

4. Digital photographs are hyperlinked to asterisks symbols indicating photo links, so survey photographs can be opened and viewed directly from the AutoCAD drawing.

Following the Annotated Drawings is a Spreadsheet of Survey Conditions, containing quantities, notes and photograph references for each condition documented at the building. The conditions listed in the spreadsheet are extracted from the data blocks in the AutoCAD drawing of the survey and are sorted by condition type. The data can be extracted from the AutoCAD drawing or excel file to other spreadsheet and database programs.

From the conditions quantities collected during the investigation, VA is preparing a schematic cost estimate for façade repairs. This Schematic Cost Estimate will be included as an addendum to the Condition Survey Report.

A TPAS User’s Manual is included as the last section of the Condition Survey Report. This manual describes in greater detail the properties included in the TPAS condition blocks, the process of creating views within AutoCAD to show information about specific conditions, the steps of extracting information contained in the AutoCAD drawing for export into a spreadsheet or database and how to set up the electronic drawing and the photograph files to create hyperlinks.

All of the documents comprising this Condition Survey Report are provided in digital format on a single compact disc. Digital files include this Report Narrative in pdf format, jpg image files of all survey photographs, annotated drawings in AutoCAD dwg and pdf formats and a spreadsheet of extracted quantities in Microsoft Excel xls format.

All of the condition information and photographs are also available through a password-secured web portal via any internet browser at “code.tpasllc.com/15State”.

The web report allows users to search for conditions by condition type, elevation and by hazardous designation.

Scope of Work Vertical Access utilized industrial rope access techniques to gain hands-on access for the investigation of the facade conditions at the north and east elevations. In general terms, technicians are suspended on one rope termed the “work positioning line” with a redundant “fall protection line” used as backup. Hands-off descent control and fall protection devices are integrated into site-specific rigging systems, along with industry-specific climbing and suspension harnesses. Vertical Access technicians are third-party certified for industrial rope access work by SPRAT, the Society of Professional Rope Access Technicians.

The primary focus of VA’s investigation of 15 State Street was to identify potentially unsafe conditions at the exterior masonry and document the conditions of deterioration. This information is intended to be used by the National Park Service to develop a repair program for the exterior of the building.

Building Description 15 State Street, also known as the Easton Building, faces the Old State House in the Faneuil Hall section of Boston. The 11- story structure, designed by Shepley, Rutan & Coolidge and constructed in 1902, was purchased in the 1990’s by the National Park Service (NPS). It housed the visitor center for the Boston National Historical Park until May 2012. The building now serves as offices for the National Park Service and the Bostonian Society.

The building, originally built as a bank, is an example of an early Beaux Arts skyscraper in Boston’s financial district. The granite-clad, steel framed structure is tripartite in form. The ornamental first three stories of the building are separated from the more uniform “shaft” of the building by a small projecting cornice with dentils at the 4th floor. The lower three stories have large window openings with painted cast iron window frames. Stories four through nine are less ornate with simple ashlar units and painted wood operable windows. Above the belt course at the 10th floor the building is more ornate, with decorative carved panels at the spandrels and corners and large brackets below the cornice. The projecting granite cornice above the 11th floor is topped with a stamped copper string course with a lion head motif at the roof level on both facades.

Previous Repairs A significant repair campaign, completed in 1996, included the replacement and pinning of granite units at the northeast corner. Replacement units were also installed at other locations including several window head units and spandrels.

Another repair carried out in the 1996 project was the installation of painted steel tubes spanning some of the window openings to act as a supplementary structural lintel.

Other work completed included cementitious crack and patch repairs and dutchmen repairs. The aesthetic quality of the repair work is generally good but the treatments did not address the underlying structural and water infiltration issues that caused the deterioration.

Facade Conditions Granite The granite at the exterior facades is in poor to fair overall condition with thirty-one conditions observed that require near term stabilization or repair.

Priority 1 Conditions

• The northeast corner of the building is in poor condition.

The previous attempt to repair and replace the granite units has failed and the vertical step cracking continues to worsen.

In some cases, there is horizontal and vertical displacement up to ½ inch associated with the step cracking (see photographs at 108-37). It is likely that the steel structural column at this location is rusting and putting expansive pressure on the granite units. This rusting steel must be further investigated so that a proper repair plan can be designed and treated as part of a future repair project. Although some crack systems at the corner do not exhibit displacement, and are

108-37_Stone_Displacement_Horizontal- 1.jpg on the North elevation marked as Priority 2 conditions, the corner should be treated as an entire system rather than treating only the surface conditions at the cracked units.

• One Priority 1 condition was noted at a spandrel location at the 6th floor.

Similar to the northeast corner, this condition is also likely due to rusting structural steel behind the cladding and should be properly addressed as part of the future repair campaign.

• Two cramp spalls on the east elevation were removed at the time of the inspection. The removed spalls were 25 and 15 square inches (see photographs at 69-135 and 23-134).

Other bonded or large incipient spalls at spandrels on the north façade that could not be safely removed at the time of the inspection pose a public safety hazard and should be repaired (see photographs at 153-133 and 153-63). These conditions occur at three spandrels on the north façade, above the 4th and 5th floor windows. There are typically failed previous crack repairs at the locations of the large incipient spalls, indicating continued movement of the underlying steel. As with the northeast corner, the condition of the structural steel at the spandrels should be investigated and treated as part of any future repair work.

• One decorative spandrel panel at the 11th floor of the south end of the east façade is badly cracked and displaced and presents a public safety hazard (see photographs at 22-123).

• An incipient spall approximately 175 square inches in area was observed at the sidewalk level on the east façade. This bonded spall was left in place to avoid potential instability of the unit directly above if it were removed (see photographs at 34-25). This condition poses a public safety hazard.

Priority 2 Conditions

• The spandrel panels on the north elevation are the location of cracking and displacement at many locations (see photographs at 157-92). Similar to the northeast corner, these conditions, although less severe, are likely due to

120-73_Stone_Spall_Hazardous-1.jpg on the North elevation rusting structural steel behind and should be properly addressed as part of the Priority 2 repair and maintenance campaign.

• Numerous crack repairs, many emanating from window sill units, have failed on the east facade (see photographs at 48-82). This pattern of unrepaired cracking was observed at other locations on this façade (see photographs at 13-82).

• The joints are in overall good condition with the exception of the horizontal joint at the wash surface of the string courses (at the 4th and 10th floors) and other joint locations that are part of a crack system or area of displacement, including the brackets near the top of the wall on the north façade and horizontal joints at the spandrels (see photographs at 14-52).

• Numerous patch repairs were documented in the granite, typically 50 square inches or less in area. Most of these are in good condition with the exception of those that cover rusting steel cramps, most of which have failed (see photographs at 164-109).

• General atmospheric soiling is present on most of the granite surfaces of the exterior façades. Heavy atmospheric soiling was observed typically at the cornices on the 4th and 10th floors and at window sill units (see photographs at 141-83). Progressive atmospheric soiling resulting in black crusts is also present at some of the recessed areas of the façades protected from water run-off.

• Biological soiling was noted at the 4th floor cornice and the pediments at the corners of the building.

• There are numerous ferrous embedments in the joints of the granite masonry, most from abandoned signage. Left in place, these embedments will continue to corrode and eventually cause damage to the surrounding masonry.

Architectural Sheet Metal

• The ornamental copper course of lions heads that tops the granite cornice is in fair condition with numerous cracks, tears and failed fasteners observed (see photographs at 125-138).

• The metal straps at the roof supporting the sheet metal course are in fair condition with some rusting observed.

Windows

• The wood windows, which may be original, are generally in fair condition with peeling paint, weathered sills and failed perimeter sealant (see photographs at 118-125).

• The cast iron window frames on the 1st and 2nd floors are in fair condition with failed paint and some rust observed. Two locations of more significant cracking of these frames were observed, including severe settlement of the cast iron frame at one of the openings on the east façade (see photographs at 58-48).

Conclusions and Recommendations

Our schematic treatment recommendations and associated cost estimate are split into two sections: Priority 1 repairs and Priority 2 repairs. Priority 1 repairs are those that must be made in order to properly address conditions that pose a public safety concern within the next two years. Priority 2 repairs are less immediate in nature but should be completed within the next five years as part of a comprehensive preventative maintenance program for the building.

Priority 1 repairs Some of the Priority 1 repairs may not be safety accomplished by suspended scaffolding and may require a pipe frame scaffold given the extent of the repair.

Further inspection of the underlying structural steel condition is required in some areas to develop a comprehensive repair strategy based on probe findings. For our schematic repair recommendations, we are assuming the structural steel retains enough capacity so that it can be retained and treated in place. If this is not the case and the steel requires repair due to extensive corrosion, the associated costs may be significantly higher than described here.

At a minimum, the granite units from the 6th to the 7th floors at the northeast corner need to be removed. If an inspection of the underlying steel column and adjacent beams shows expansion rust but acceptable section loss of the underlying steel column, the column and adjacent exposed spandrel beams may be scraped free of all rust, cleaned and painted with an application of a full coat of organic (epoxy) zinc-rich primer, a full intermediate coat of epoxy, and a full finish coat of aliphatic urethane. After the treatment of the underlying steel, sound granite units may be replaced with a new anchorage system yet to be designed. Granite units that have cracked to any extent must be replaced by new units to match existing and reattached to the underlying cleaned steel column or adjacent spandrel beams. All new stone anchors and pins should be fabricated from Type 304 stainless steel.

A similar process should be undertaken at any of the spandrel panels that have displacement and/or cracking noted on the condition drawings.

All incipient, bonded or removed spalls that have been designated as Priority 1 should be repaired either with a unit replacement if the spall is greater than 1/6 of the unit size or with factory mixed cementitious patching material. Appropriate products include Jahn Restoration Mortars, Mimic by Conproco Corporation and Custom System 45 by Edison Coatings, Inc.

Priority 2 repairs The crack systems and previous failed crack repairs that are designated as Priority 2 in the condition drawing should be repaired with an ultrafine superplasticized grout that exhibits low shrinkage with high bond strength that can be injected into cracks.

Examples of appropriate materials to be ultimately approved by the architect include: Jahn Injection Grout, Granite Finish by Conproco Corporation and Pump – X 53-Series by Edison Coatings.

Failed patches should be removed and new patches installed with a factory-mixed cementitious product that is custom manufactured for patching stone. Appropriate products include Jahn Restoration Mortars, Mimic by Conproco Corporation and Custom System 45 by Edison Coatings, Inc.

New lead “T” caps should be installed in all sky-facing wash surfaces at the band courses at the 4th and 10th floors and at the pediments over the entries on the 2nd floor. These lead caps should be set in exterior grade urethane caulk over new closed cell foam backer rod.

General washing of the exterior granite with low-pressurized water is recommended to remove atmospheric soiling. Localized application of a biocide cleaner is recommended at cornices and the 2nd floor pediments where biological growth has taken hold. Prior to any large-scale cleaning work, mock-ups should be completed to determine the appropriate pressure for the general cleaning. Cleaning should be carried out prior to performing the repairs at cracks and spalls that are a part of the Priority 2 program so that the color and texture of the repairs can be matched to the cleaned granite surface.

To treat the weathered surfaces and rust at the wood windows and cast iron frames, the existing paint coatings should be removed. Weathered wood may require consolidation with epoxy. Corrosion and scale at the cast iron should be removed by mechanical wire brushing or sandblasting. Following these treatments to the wood and cast iron, the window materials should be repainted and new perimeter sealant installed.

The conditions described above and treatments recommended by Vertical Access address waterproofing and material deterioration issues for the façades only.

Vertical Access did not inspect the roof of the building or energy performance of the windows. Further study of these elements would be required to develop repair recommendations and cost estimates for these components of the building envelope.

Vertical Access recommends that the repairs designated as Priority 1 be performed by the fall of 2012. During the investigation and documentation of existing conditions, some loose material and potentially unsafe conditions were temporarily mitigated, but cracks associated with corrosion of structural steel remain in place and these will continue to deteriorate. If a repair program is not in place by the end of summer 2012, the sidewalk bridge should remain in place over the winter and the areas with cracks, spalls and displacement previously identified should be re-examined next spring to determine if there has been any change in their condition from their current state.

Vertical Access remains on call to assist with additional investigations or to elaborate on the work already completed.

Respectfully submitted for Vertical Access LLC by:

Kelly Streeter, P.E. and Evan Kopelson, AIC

July 27, 2012

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Boston, MA Page 45

Vertical Access LLC

80-87 Stone_Repair Replacement-180-52 Stone_Crack System units and joints-1

79-139 SheetMetal_Seam Fastener Failed-179-135 SheetMetal_Seam Folded Failed-2

Facade Investigation

15 State Street

Boston, MA Page 46

Vertical Access LLC

82-20 Stone_Crack System units and joints-282-20 Stone_Crack System units and joints-1

82-19 Stone_Displacement Horizontal-282-19 Stone_Displacement Horizontal-1

Facade Investigation

15 State Street

Boston, MA Page 47

Vertical Access LLC

108-26 Stone_Crack Repair failed-1108-21 Stone_Crack Repair failed-1

82-38 Stone_Displacement Horizontal-182-20 Stone_Crack System units and joints-3

Facade Investigation

15 State Street

Boston, MA Page 48

Vertical Access LLC

109-82 Stone_Displacement Horizontal-1109-40 Stone_Crack System units and joints-2

109-40 Stone_Crack System units and joints-1108-37 Stone_Displacement Horizontal-1

Facade Investigation

15 State Street

Boston, MA Page 49

Vertical Access LLC

110-116 Stone_Repair Replacement-1110-59 Stone_Crack System joints-1

109-127 Stone_Displacement Horizontal-1109-122 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 50

Vertical Access LLC

110-137 SheetMetal_Corrosion Perforated-1110-130 Stone_Crack System units and joints-3

110-130 Stone_Crack System units and joints-2110-130 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 51

Vertical Access LLC

111-52 Stone_Repair Replacement-1111-49 Stone_Crack Repair failed-1

111-29 Stone_Crack System units-2111-29 Stone_Crack System units-1

Facade Investigation

15 State Street

Boston, MA Page 52

Vertical Access LLC

112-120 Stone_Crack Repair failed-1112-63 Stone_Crack System units and joints-3

112-63 Stone_Crack System units and joints-2112-63 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 53

Vertical Access LLC

113-82 Stone_Crack System units and joints-1113-74 Stone_Crack System units and joints-2

113-74 Stone_Crack System units and joints-1113-21 Stone_Crack System units-1

Facade Investigation

15 State Street

Boston, MA Page 54

Vertical Access LLC

114-37 Stone_Crack Repair failed-1113-132 Stone_Repair Patch Failed-1

113-109 Stone_Crack Repair failed-1113-82 Stone_Crack System units and joints-2

Facade Investigation

15 State Street

Boston, MA Page 55

Vertical Access LLC

115-55 Stone_Crack Single unit-1114-128 Stone_Crack System joints-2

114-128 Stone_Crack System joints-1114-115 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 56

Vertical Access LLC

116-73 Stone_Spall Hazardous-1116-53 Stone_Crack System units and joints-1

115-110 Stone_SurfLoss Exfoliation-1115-73 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 57

Vertical Access LLC

118-61 Stone_Displacement Horizontal-1118-43 Stone_SoilStain Biological-1

117-44 Stone_Crack Repair failed-2117-44 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 58

Vertical Access LLC

118-122 Stone_Repair Replacement-1118-103 Stone_Joints Mortar Failed-1

118-72 Stone_Displacement Horizontal-2118-72 Stone_Displacement Horizontal-1

Facade Investigation

15 State Street

Boston, MA Page 59

Vertical Access LLC

119-69 Stone_Note Misc condition-1119-41 Stone_Joints Mortar Failed-1

118-138 SheetMetal_Damaged Dented-1118-125 Wood_Deteriorated Weathered-1

Facade Investigation

15 State Street

Boston, MA Page 60

Vertical Access LLC

119-131 Stone_Repair Patch Failed-1119-129 Stone_Crack System joints-2

119-129 Stone_Crack System joints-1119-70 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 61

Vertical Access LLC

120-102 Stone_Spall Incipient-1120-73 Stone_Spall Hazardous-1

120-52 Stone_Crack System units and joints-1120-48 Stone_Spall Incipient-1

Facade Investigation

15 State Street

Boston, MA Page 62

Vertical Access LLC

121-132 Stone_Repair Replacement-1120-134 Stone_Crack System joints-2

120-134 Stone_Crack System joints-1120-126 Stone_SoilStain Atmospheric-1

Facade Investigation

15 State Street

Boston, MA Page 63

Vertical Access LLC

123-42 Stone_Crack System units and joints-1122-138 SheetMetal_Damaged Torn-1

122-135 Stone_Crack Single unit-1122-69 Stone_SurfLoss Exfoliation-1

Facade Investigation

15 State Street

Boston, MA Page 64

Vertical Access LLC

123-71 Stone_Crack Repair failed-2123-71 Stone_Crack Repair failed-1

123-52 Stone_Crack Repair failed-1123-42 Stone_Crack System units and joints-2

Facade Investigation

15 State Street

Boston, MA Page 65

Vertical Access LLC

124-66 Stone_Crack System units and joints-3124-66 Stone_Crack System units and joints-2

124-66 Stone_Crack System units and joints-1123-122 Stone_Repair Replacement-1

Facade Investigation

15 State Street

Boston, MA Page 66

Vertical Access LLC

124-118 Stone_Crack Repair failed-1124-92 Stone_Crack System units and joints-1

124-74 Stone_Crack System units and joints-1124-72 Stone_Displacement Horizontal-1

Facade Investigation

15 State Street

Boston, MA Page 67

Vertical Access LLC

124-127 Stone_Crack System joints-4124-127 Stone_Crack System joints-3

124-127 Stone_Crack System joints-2124-127 Stone_Crack System joints-1

Facade Investigation

15 State Street

Boston, MA Page 68

Vertical Access LLC

125-42 Stone_Embedment Ferrous Element-1125-21 Stone_Crack System units and joints-1

124-139 SheetMetal_Damaged Torn-1124-129 Stone_Displacement Horizontal-1

Facade Investigation

15 State Street

Boston, MA Page 69

Vertical Access LLC

125-103 Stone_Crack System units and joints-2125-103 Stone_Crack System units and joints-1

125-76 Stone_Crack System units and joints-2125-76 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 70

Vertical Access LLC

125-117 Stone_Crack System units and joints-3125-117 Stone_Crack System units and joints-2

125-117 Stone_Crack System units and joints-1125-114 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 71

Vertical Access LLC

126-18 Stone_Crack Single unit-1125-138 SheetMetal_Seam Sealant Failed-1

125-117 Stone_Crack System units and joints-5125-117 Stone_Crack System units and joints-4

Facade Investigation

15 State Street

Boston, MA Page 72

Vertical Access LLC

126-119 Stone_Displacement Horizontal-1126-71 Stone_Displacement Horizontal-2

126-71 Stone_Displacement Horizontal-1126-64 Stone_Crack Single unit-1

Facade Investigation

15 State Street

Boston, MA Page 73

Vertical Access LLC

128-49 Stone_Crack Repair failed-1127-81 Stone_Crack Single unit-1

127-41 Stone_Crack System units and joints-2127-41 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 74

Vertical Access LLC

130-54 Stone_Crack Repair failed-1129-119 Stone_Note Misc condition-1

129-99 Stone_Crack Single unit-1129-70 Stone_Crack Single unit-1

Facade Investigation

15 State Street

Boston, MA Page 75

Vertical Access LLC

133-51 Stone_Spall Incipient-1132-49 Stone_Crack Repair failed-1

131-62 Stone_Crack Repair sound-1130-79 Stone_Crack Single unit-1

Facade Investigation

15 State Street

Boston, MA Page 76

Vertical Access LLC

133-109 Stone_Crack Repair sound-1133-82 Stone_Joints Mortar Failed-1

133-53 Stone_SoilStain Atmospheric-2133-53 Stone_SoilStain Atmospheric-1

Facade Investigation

15 State Street

Boston, MA Page 77

Vertical Access LLC

134-131 Stone_Repair Patch Failed-1134-70 Stone_Crack Single unit-1

133-118 Stone_Crack Single unit-1133-114 Stone_SoilStain Atmospheric-1

Facade Investigation

15 State Street

Boston, MA Page 78

Vertical Access LLC

137-26 ArchMetal_Corrosion Surface-1136-90 Stone_Crack Repair failed-1

135-137 SheetMetal_Damaged Torn-1135-111 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 79

Vertical Access LLC

138-19 ArchMetal_Corrosion Surface-1137-42 Stone_Embedment Ferrous Element-1

137-28 Wood_Deteriorated Weathered-1137-26 ArchMetal_Corrosion Surface-2

Facade Investigation

15 State Street

Boston, MA Page 80

Vertical Access LLC

138-133 Stone_Joints Mortar Failed-1138-131 Stone_Repair Patch Failed-1

138-53 Stone_SoilStain Biological-1138-19 ArchMetal_Corrosion Surface-2

Facade Investigation

15 State Street

Boston, MA Page 81

Vertical Access LLC

139-61 Stone_Crack Repair sound-1138-139 SheetMetal_Damaged Torn-1

138-135 Stone_SoilStain Atmospheric-1138-133 Stone_Joints Mortar Failed-2

Facade Investigation

15 State Street

Boston, MA Page 82

Vertical Access LLC

141-83 Stone_SoilStain Black Crusts-1140-131 Stone_Repair Patch Failed-1

140-92 Stone_Crack Repair failed-1140-53 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 83

Vertical Access LLC

146-122 Stone_Crack Repair failed-1146-60 Stone_Displacement Horizontal-1

143-133 Stone_Spall Missing-1142-117 Stone_SoilStain Rust-1

Facade Investigation

15 State Street

Boston, MA Page 84

Vertical Access LLC

148-116 Stone_Repair Patch Failed-1148-52 Stone_Crack System units and joints-1

148-41 Stone_Crack Single unit-1147-89 Stone_Crack Single unit-1

Facade Investigation

15 State Street

Boston, MA Page 85

Vertical Access LLC

150-66 Stone_Crack Repair sound-1150-56 Stone_Crack Single unit-1

149-61 Stone_Crack Repair sound-1149-38 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 86

Vertical Access LLC

151-72 Stone_Crack Repair sound-1151-41 Stone_Displacement Horizontal-1

151-23 Stone_Crack System units and joints-1150-134 Stone_Repair Dutchman Failed-1

Facade Investigation

15 State Street

Boston, MA Page 87

Vertical Access LLC

151-129 Stone_Crack Repair sound-1151-122 Stone_Crack System units and joints-2

151-122 Stone_Crack System units and joints-1151-119 Stone_Crack Repair sound-1

Facade Investigation

15 State Street

Boston, MA Page 88

Vertical Access LLC

153-133 Stone_Spall Bonded-1153-63 Stone_Unsecured Hazardous-1

153-60 Stone_Spall Missing-1153-42 Stone_Crack Repair failed-1

Facade Investigation

15 State Street

Boston, MA Page 89

Vertical Access LLC

156-61 Stone_Crack Repair failed-1154-60 Stone_Displacement Horizontal-1

154-45 Stone_Crack Repair sound-1154-41 Stone_Crack Single unit-1

Facade Investigation

15 State Street

Boston, MA Page 90

Vertical Access LLC

157-92 Stone_Spall Incipient-1157-91 Stone_Crack System units-1

157-36 ArchMetal_Corrosion Surface-1157-32 ArchMetal_Corrosion Pitted-1

Facade Investigation

15 State Street

Boston, MA Page 91

Vertical Access LLC

159-61 Stone_Crack Repair sound-1158-139 SheetMetal_Damaged Torn-1

158-123 Stone_Crack Repair sound-1157-135 Stone_SurfLoss Exfoliation-1

Facade Investigation

15 State Street

Boston, MA Page 92

Vertical Access LLC

161-45 Stone_Crack Single unit-1161-40 Stone_Crack Repair failed-1

160-121 Stone_Repair Patch Sound-1160-82 Stone_Crack System joints-1

Facade Investigation

15 State Street

Boston, MA Page 93

Vertical Access LLC

161-125 Stone_Crack System joints-1161-117 Stone_Crack Repair sound-2

161-117 Stone_Crack Repair sound-1161-52 Stone_Crack Single unit-1

Facade Investigation

15 State Street

Boston, MA Page 94

Vertical Access LLC

162-68 Stone_Crack System units and joints-3162-68 Stone_Crack System units and joints-2

162-68 Stone_Crack System units and joints-1162-42 Stone_SurfLoss Chipped-1

Facade Investigation

15 State Street

Boston, MA Page 95

Vertical Access LLC

163-38 Stone_Crack Repair failed-1162-135 Stone_SoilStain Efflorescence-1

162-129 Stone_Crack System units and joints-1162-68 Stone_Crack System units and joints-4

Facade Investigation

15 State Street

Boston, MA Page 96

Vertical Access LLC

164-41 Stone_Crack Single unit-1163-65 Stone_Spall Removed-2

163-65 Stone_Spall Removed-1163-58 Stone_Crack System units-1

Facade Investigation

15 State Street

Boston, MA Page 97

Vertical Access LLC

164-111 Stone_Joints Mortar Failed-1164-109 Stone_Repair Patch Failed-1

164-50 Stone_Crack System units and joints-2164-50 Stone_Crack System units and joints-1

Facade Investigation

15 State Street

Boston, MA Page 98

Vertical Access LLC

165-139 SheetMetal_Seam Folded Failed-1164-126 Stone_Crack Repair failed-1

164-111 Stone_Joints Mortar Failed-3164-111 Stone_Joints Mortar Failed-2

Facade Investigation

15 State Street

Boston, MA Page 99

Vertical Access LLC

100 20 30 605040 8070 90 110100 120 130 150140 160 170

FR

O

M D

RA

W

IN

G

S

PR

O

VI

D

ED

B Y:

N

AT

IO

N

AL

P

AR

K

SE

RV

IC

E

SC

AL

E:

N O

T

TO

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CA

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Severity

Fault Code Target Symbol

Picture Link

KEY TO SYMBOLS

This target symbol indicates a 20 square inch spall, which was removed during the survey and photographed:

This box symbol indicates an area of biological soiling, which was not photographed:

This polyline indicates a crack system following a joint path, 3/16 inch wide, which was photographed:

Text labels include a code describing the type of conditon, and if applicable, a severity code and Picture Link.

Four types of graphical symbols are used:

--Target symbols depict faults having discrete locations, such as spalls or patch repairs.

--Box symbols are rectangular symbols delineating conditions that span an area too large to be effectively represented with target symbols.

--Polyline symbols depict cracks and specific joint conditions.

--Picture Link symbols indicate the location of survey photographs.

Each TPAS annotation is comprised of a graphical symbol and text label.

KEY TO SURVEY CODES

Unsecured

Surface Loss

Spalls

Soiled/Stained

RS Removed + Steel

Exfoliated Hazardous

Loose Hollow

Chipped Exf

Hol Haz

Chp

L

Missing + Steel

Removed

Hazardous

Missing Incipient

Efflorescence Leached Salts

Black Crusts

Bonded

Rust

Biological growth Atmospheric Replacement Patch sound

MS

Haz

Rst Lch

M

R

I

B

Eff Blk

Atm Bio

Rpl P

Symbol

Joints Failed

Prev. Repairs

Fe Element

Displacement

Coating Failed

Condition

Cracks

Crack Repair FailedCRprF Horizontal displacement Horiz. & Vert. disp.

Dutchman sound Patch Failed

Dutchman Failed

Mortar Missing Sealant Failed

Mortar Caulked Ferrous element

Mortar Failed

PF

DF

SlntF MorM

D

MorClk MorF

Fe

HV

Hor

Crack system: Joints

Crack sys.: Units & Joints Crack system: Units

Crack Repair

Coating Failed

Crack

Coating

CRpr

CUJ

CU

CJ

CtF Ct

C

Fault Type

Area in sq. ft.

Area in sq. ft.

Not applicable

Area in sq. ft.

in 1/8" increments

Not applicable

Depth of loss

Size of spall in square inches

Not applicable

Area in square feet

Length in lin. ft.

Not applicable

Length in lin. ft.

Not applicable

Number of units

Length in lin.ft.

Area in sq. ft.

1/16 to 1/8 inch2

Disp. in 1/8" increments

Not applicable in square inches Size of repair

Not applicable

Percentage Percentage

Width in 1/16" increments:

Hairline to 1/32 inch 1/32 to 1/16 inch

Hairline

Not applicable

.5

Severity Amount

Connection Failed Fastener FailedFstF Not applicable Count

Corroded

FstRst Fastener Rusted Surface

Perforated Pitted

Prf

Srf Pit

Area in sq. ft.

Area in sq. ft.

Area in sq. ft.

Count

Not applicable

Damaged Dented Torn

Dnt Trn

Area in sq. ft.Not applicable

Deteriorated RotRot

Area in sq. ft.Not applicable WeatheredWthr

East Elevation North Elevation

Extracted Survey Conditions

Block Name Condition X Y Code Severity Amount Priority Photo ArchMetal_Coating Coating Failed 148 30 CtF 10.788 Pr3 ArchMetal_Coating Coating Failed 126 30 CtF 10.788 Pr3 ArchMetal_Coating Coating Failed 141 32 CtF 5.701 Pr3 ArchMetal_Coating Coating Failed 141 38 CtF 1.480 Pr3 ArchMetal_Coating Coating Failed 133 38 CtF 1.480 Pr3 ArchMetal_Coating Coating Failed 137 39 CtF 10.343 Pr2 ArchMetal_Coating Coating Failed 142 23 CtF 8.796 Pr3 ArchMetal_Coating Coating Failed 133 23 CtF 8.796 Pr3 ArchMetal_Coating Coating Failed 135 19 CtF 45.453 Pr3 ArchMetal_Coating Coating Failed 133 32 CtF 5.701 Pr3 ArchMetal_Coating Coating Failed 137 36 CtF 16.325 Pr3 ArchMetal_Coating Coating Failed 135 26 CtF 32.771 Pr3 ArchMetal_Connection Fastener failed 29 140 FstF Pr2 29-140 ArchMetal_Connection Fastener failed-1, ArchMetal_Corrosion Pitted 157 32 Pit 11.573 Pr3 157-32 ArchMetal_Corrosion Pitted-1, ArchMetal_Corrosion Surface 157 36 Srf 44.174 Pr3 157-36 ArchMetal_Corrosion Surface-1, ArchMetal_Corrosion Surface 137 26 Srf 32.989 Pr3 137-26 ArchMetal_Corrosion Surface-1, 137-26 ArchMetal_Corrosion Surface-2, ArchMetal_Corrosion Surface 138 19 Srf 59.233 Pr3 138-19 ArchMetal_Corrosion Surface-1, 138-19 ArchMetal_Corrosion Surface-2, ArchMetal_Crack Crack 25 140 C 3 1 Pr2 25-140 ArchMetal_Crack Crack-1, ArchMetal_Crack Crack 44 45 C 2 4.126 Pr2 44-45…