Hammond Castle

CITY OF GLOUCESTER COMMUNITY PRESERVATION COMMITTEE PROJECT APPLICATION COVER SHEET

I: Project Information Project Title: Emergency Funding for Hammond Museum, Inc, Clerestory Restoration Project

Project Summary: Restoration of the original (1920s) wire glass clerestory over the museum’s courtyard. This project was partially funded by the Gloucester CPA grant in 2019. Emergency funding is needed to repair unexpected additional work to the scope of the Clerestory Restoration that began on November 15, 2020. This unexpected decay was revealed as the planned restoration began on the original Clerestory project. The deteriorated curbs, roof rafters and rusted metal were revealed at the newly exposed sections of Skylight curbs on the north and south sides, require immediate repair. This deuteriation in these hidden conditions was not evident when the initial project planning and budget were approved. The deteriorated wood must be replaced with pressure treated material and the rusted channel embedded in the curb has to be replaced with a matching new Piece coated to resist future rusting. Without this work being incorporated the skylight restoration project will not be complete. These additional repairs also require a new approach to the work with the additional cost of creating a temporary roof needed to allow work to continue regardless of weather which is critical for project schedule.

Please see attached letter from project coordinator, Patrick B. Guthrie, AIA, NCARB, Principal, Design Associates, Inc.

Estimated start date: November 15, 2021 Estimated completion date: April 1, 2021 CPA Program Area:

☐ Open Space ☒ Historic Preservation ☐ Community Housing ☐ Recreation

II: Applicant/Developer Information Contact with primary responsibility for project: Peter Kennett Organization (if applicable): Hammond Museum, Inc. (DA Hammond Castle Museum) Mailing Address:80 Hesperus Avenue, Gloucester, MA 01930 Daytime phone #:978 283-2080 E-mail address:[email protected] Federal ID#:04-2104270 Secondary Contact: Linda Harvey Organization (if applicable):Hammond Museum, Inc Mailing Address:80 Hesperus Avenue Daytime phone #:978 283-2080 E-mail address:[email protected] III: Budget Summary Total budget for project: Emergency Work Budget $76,256 CPA funding request: $38,128 CPA request as percentage of total budget: 50%

Applicant’s Signature: ______

Printed name and Position: ______

Co-applicant/ City Official (if required): ______CITY OF GLOUCESTER COMMUNITY PRESERVATION COMMITTEE

PROJECT SCHEDULE

Please provide a project timeline below, noting all project milestones. Please note that because the City Council must approve all appropriations, CPA funds may not be available until up to two months following Committee approval.

Activity Estimated Date Project Start Date: Removal of large tree in courtyard and Nov 15, 2020 other trees trimmed to allow work space. Installation of scaffolding and working surfaces supported at top of Courtyard at skylight level. Removal of old piping and weather system designed by Hammond and piping repurposed. Removal of horizontal boards at the skylight parapet wall to access the ends of the steel trusses Project Milestone:

50% Completion Replacement of discovered deuteriation January 2021 Stage: of curbs in eves. Remediation complete; trusses reinforced Project Milestone: Glass installed; tested January – March 2021 Project Completion All scaffolding removed; punch list April 1, 2021 Date: completed; owner’s acceptance

• The Schedule is devised to have the least possible impact on the museum’s seasonal operations.

Please note: If the project is approved, the recipient must provide progress reports to the Committee on a quarterly basis (by the 15th of January, April, July and October) depending on the length of the project. The recipient shall also provide an interim report at the 50% Completion Stage, along with budget documentation.

Please feel free to photocopy or re-create this form if more room is needed.

CITY OF GLOUCESTER COMMUNITY PRESERVATION COMMITTEE

BUDGET FORM

Project Name: __Emergency Funding for Clerestory Restoration Project Applicant: Hammond Museum, Inc

SOURCES OF FUNDING Source Amount Community Preservation Act Fund $38,128 Applying for (List other sources of funding) Mass Preservation Project Fund $38,128 Applied For (Emergency Funds - MHC)

Total Project Funding $76,256

PROJECT EXPENSES Expense Amount Please indicate which expenses will be funded by CPA Funds: See attachment A

Total Project Expenses $

Please feel free to photocopy or re-create this form if more room is needed.

See Attachment A January 15, 2021

Linda Harvey, Executive Director Hammond Museum 80 Hesperus Avenue Gloucester, MA 01930

Dear Linda:

This is a letter to describe the work that must be added to the scope of the skylight restoration and repair at the courtyard of the Hammond Museum. This work was revealed as the temporary staging was installed at the courtyard and for the ﬁ rst time up close inspection and previously hidden conditions were revealed. The timing of this added work is critical as it must be completed in conjunction with already scheduled skylight repairs while the temporary staging is present. The current project budget does not include the cost of this additional work and a change order for $76,256 will be issued. Immediate action is required for the repairs and to keep the project moving to meet deadlines for April events at the museum and to keep the contractor moving on the project without losing precious time.

Listed on the National Register of Historic Places, the Hammond Castle Museum, designed by Allen & Collens of Boston and constructed between 1926 and 1929 was home to John Hays Hammond, Jr. Hammond, an inventor who held over four hundred patents and was a pioneer in the study of remote control. Hammond collected Roman, medieval and Renaissance artifacts many of which are on view at the skylit courtyard in the west wing of the building. The courtyard skylight is a signature historic element of the museum. The bright daylight admitted through the fourteen hundred square foot expanse of glass is a marked contrast to the medieval inspired stone masonry and heavy wood beams used in the construction of the rest of the museum. Nearly a century of time and weather took their toll on the skylight steel structure, wired glass and copper mullions and ﬂ ashing. The museum secured funding through the local Community Preservation Committee and the Massachusetts Cultural Facilities Fund for restoration of this historic expanse of glass, copper and steel.

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The original scope of work for the project is to repair existing skylight trusses by cleaning rust, recoating with rust inhibiting coatings and adding an additional steel member to strengthen the overstressed top chord of each truss adjacent to the wall. Piping suspended and threaded through the trusses and associated with an abandoned heating system in the courtyard will be removed. The entire copper frame which is severely overloaded will be replaced with heavier gage copper in a slightly deeper proﬁ le. Extant wire frame and stippled glass of which 30 percent are cracked and random panels that replaced original glass will all be removed. New, tempered, laminated safety glass, required by the building code and stippled to resemble the original glass will be made and installed on the new copper frame. Perimeter ﬂ ashing and gutters of the skylight will be recovered with new copper. Salvaged wire glass from the skylight will replace broken panes in the glazed west wall of the courtyard and at the shed roofed ventilator on the east end of the skylight peak. West wall mullions will be straightened. For context the original project scope bid documents are attached to this letter as Attachment B. The contract for construction was awarded to American Steeple and Tower Co.

Work commenced on November 15, 2020 with construction of temporary staging beginning. On December 15 a partial platform was complete enough to inspect conditions exposed at the skylight curbs on the north and south sides by partial removal of horizontal wooden boards. De- teriorated wood, included roof rafters and rusted metal revealed at the exposed sections require immediate work. The next week with the platform complete and all the curb opened a course of action was determined. The deteriorated wood must be replaced with pressure treated material and the rusted channel embedded in the curb has to be replaced with a matching new piece coated to resist future rusting. Without this work being incorporated the skylight restoration project will not be complete.

These additional repairs requires a new approach to the work. Originally the intent was to remove skylight elements in sections and provide weather protection at the deck of the staging to protect the courtyard. Now that the curbing must be replaced a temporary roof needs to be constructed over the entire skylight. This will allow work to continue regardless of weather which is critical for project schedule. Due to the urgency of timing a notice to proceed was issued to American Steeple on January 14, 2020.

American Steeple and Tower Company has evaluated the work and prepared pricing for repair of the eaves and for construction of the temporary roof enclosure. The original project budget and the American Steeple emergency scope budget is appended in Attachment A.

To Illustrate the emergency condition we have included photographs taken of the work area of the curb after the exposures were made on December 15th. The photographs below illustrate deterioration of the wood and the rusting of steel. Following the photographs are detail drawings of the existing curb, the repair work and the design for the temporary shelter.

The total curb length is eighty feet divided evenly between the north and the south sides of the skylight. The curb at each side is partly interrupted by roof features, a chimney mid-point of the

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2 Skylight repair increased scope south side at these locations steel brackets supporting roof sheathing and skylight ﬂ ashing will be replaced with new brackets treated with rust inhibiting paint same as the trusses in the original scope. All wood framing will be replaced with new pressure treated elements. Top side wood sheathing will be replaced. In addition new steel channels, also treated with rust inhibiting coating will be installed in place of the heavily rusted channels that support the ends of skylight muntins which will allow the skylight mullion replacement to commence.

We are happy to discuss further the issues identiﬁ ed below and continue our support of the Hammond Museum in its request for grant support.

Regards,Regaardrds,

PatrickPatrick B. Guthrie, AIA, NNCARB,CAARBRB, PrincipalPrPrinc Design AssociatesAssociates, IncInc.

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Figure 2: The platform on top of the temporary staging Figure 1: The staging occupies the entirety of the courtyard. provided up close access to the skylight curbing Timely completion of the work is required for removal of the staging from this important space where many of Ham- monds artifacts are on display

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Figure 3: Removal of concealing wood boards revealed rotted wood and sheathing, rusted steel and deteriorated rafter ends in the curb of the skylight. This structure must be repaired as part of the skylight restoration.

Figure 4: Detail of rotted wood and rusted steel at the Figure 5: Additional deteriorated wood and rusted skylight curb and underside of sheathing. channel detail at skylight curb.

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Figure 6: Additional deteriorated wood and rusted Figure 7: Additional deteriorated wood and rusted channel detail at skylight curb. channel detail at skylight curb.

Figure 8: View of the exterior of the skylight curb showing its integration into the entirety of the skylight assembly. The ﬂ at roof will be the base for the temporary protective roof that will shelter the entire structure and allow work on the curb regardless of weather..

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MULLION

RUSTED CHANNELS AND 6" CHANNEL BOLTS AND TRUSSES BOLTED TO TOP FLANGE OF ROTTED TRUSSES SHEATHING 3/4" ROOF (SAME SIZE AS PURLINS) POOR x 1 3/4" CONDITION 2 1/2" 24" O.C. RIBS @ O.C.

EXTERIOR SHEATHING 24" 1/4" POOR CONDITION CONTINUOUS @ SHEATHING

BLOCK 1'-3 1/8"

ROTTED 10 STUDS ROOFING: WALL G MEMBRANE OVER COPPER CONDITION POOR T& CRIPPLE

FLAT ROOF SHEATHING

ROOF 2 DAMAGED 23DAMAGED 8 1" (+/-)

2X8 ROOF RAFTER 5" EMBEDDED IN

POCKET IN 1/2"

7 MASONRY WALL COURTYARD MASONRY WALL 8"

ATTIC 2"+/-

DATE: EXISTING CURB DETAIL 7/10/2020 D E S I G N 12/16/20 HAMMOND CASTLE A S S O C I A T E S SCALE: INC AS NOTED ASK-001

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NEW 3/4" P.T. PLYWOOD SHEATHING MULLION

C6X8.2 CHANNEL REPLACES EXISTING CHANNEL (WHERE PRESENT) APPLY PROTECTIVE 5/8" P.T. PLYWD COATING BOLT TO TRUSSES + 1/2" FINISH USING EXISTING BOLT HOLES PANELS TO O.C. RESEMBLE @ 24" NEW PRIOR FINISH

NEW 3/4" P.T. PLYWOOD SHEATHING BLOCK WEB 1/4"

SOLID AND 1'-3 RAMSET TO WEB

RAMSET TAPERED BLOCKING

ROOF ALIGN

NEW PT 2X8

TAP-CON EXIST. 2X8 RAFTER EMBEDDED IN SCREWS 8" O.C. POCKET IN MASONRY WALL

EXIST. MASONRY WALL

ATTIC COURTYARD

2X8 P.T.LEDGER SUPPORTING SELECTED RAFTER ALL NEW FRAMING LUMBER TO BE ENDS ON NORTH PT 2X4 KILN DRIED AFTER SIDE ONLY TREATMENT U.N.O. USE GALVANIZED STEEL FASTENERS

DATE: EXISTING CURB REPAIR - D E S I G N 12/28/2020 REVISED HAMMOND CASTLE REV 1 A S S O C I A T E S SCALE: INC AS NOTED ASK-002

Figure 9: Sketch for repair to existing curb.

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8 Skylight repair increased scope SKS-1 6 JANUARY 2020 GLOUCESTER, MA 80 HESPERES AVE. HAMMOND CASTLE MUSEUM

(2) 3/4" PLYWOOD RIM NAILED TO TJI ENDS PRELIMINARY PROTECTION PLANK SLEEPER 9 1/2" TRUS-JOIST TJI230 @ 2'-0" O.C.

MEMBRANE + STAGING

PRELIMINARY 2x6@24" O.C. STUD BEARING WALL @2'-0" O.C. - ALIGN STUDS WITH TJI RAFTERS 2'-0" + 2'-0"

(4) 2x12 RIDGE (2) 4x6 POSTS 4x6 (2) SEE SKS-2 THRD ROD THRU-BOLT/ CLAMP

SIMPSON PC6Z POST CAPS Y

1x4 STRAPPING SCREW-FASTENED 2'-O" ON TOP, 4'-0" ON BOT.

N IN

IM PREL

TEMPORARY SKYLIGHT ROOF ENCLOSURE 3/8" = 1'-0"

ELIMINARY PR 2x6 DIAGONAL BRACING PLACE GALV EYE-BOLT IN PITCH POCKET 8'-0" O.C. BOLT THRU DEPTH OF ROOF JOISTS AND BOLT TO 2x12 FLAT ON UNDERSIDE OF JOISTS STEEL CABLE Salem, MA 01970-3517 www.structures-north.com 60 Washington street Suite 401

T. 978.745.6817 F. 978.745.6067 WALL STUD 6'-0" OF I-JOIST TO COIL STRAP TOP

Figure 10: Sketch for temporary skylight roof enclosure structure.

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9 1/2" TJI 230's (4) 2x12 LAPPED AT RIDGE RIDGE

RIDGE SPLICE

SIMPSON TS12 2x12 GUSSETS TWIST-STRAP SIMPSON AT SPLICES HOLD-DOWN PC6Z POST (TYP.) CAPS

Y 3/4" DIA. THRD. ROD THRU-BOLTS w/ INAR WASHERS - CLAMP M POSTS TIGHTLY Y PRELI AR N 4x6 POST BLOCKING AT 4x6 POST DIAGONAL STEEL ANGLES PRELIMI (2) 2x6 BOTTOM SKS-2 PLATE 6 JANUARY 2020 Salem, MA 01970-3517 GLOUCESTER, MA 80 HESPERES AVE. www.structures-north.com 60 Washington street Suite 401 T. 978.745.6817 F. 978.745.6067 BLOCKING IN

DEPTH OF HAMMOND CASTLE MUSEUM STEEL ANGLE

2 SECTION AT RIDGE POST SUPPORT SKS-2 1" = 1'-0"

Figure 11: Sketch for temporary skylight roof enclosure structure ridge beam posts.

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A R C H I T E C T U R E

1 P L A N N I N G H I S T O R I C P R E S E R V A T I O N

DEPTH VARIES +/-

1'-11" 1035 Cambridge Street Cambridge MA 02141 T 617 661 9082 KEY PLAN F 617 661 2550 Scale: 1/8" = 1'-0" CROSS SECTION

2 2 Scale: 1/2" = 1'-0" PO Box 1520 Nantucket MA 02554

T 508 228 4342 F 508 228 3428

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PRESERVATION & RESTORATION AT

9'-0" 12'-6" 12'-6" 13'-0" HAMMOND

CASTLE WALL, MASONRY CASTLE

DOGHOUSE MUSEUM 80 Hesperus Ave

TYPICAL MULLION Gloucester, MA RIDGE 01930

TOP PURLIN

UPPER PURLIN CONTINUES TO GUSSET WALL - DOES NOT APPEAR MARK DATE REVISIONS ANCHORD (WINDOW HEIGHT A 9/16/2020 2020-0916 ISSUED FOR QTY REVIEW

4'-8"+/- AT THIS LOCATION)

TRUSS B 11/6/2020 ISSUED FOR PERMIT

C 12/31/2020 PROGRESS

LAYLIGHT CHANNEL TRANSITION TO BE MEASURED

12 Print Date:

WALL

+/-

WEST 11'-2"

SLOPING ~ 57.2

MASONRY PARAPET LONG SECTION SKYLIGHT COPPER CURB 0 1 2 3 4 56 FT SKYLIGHT LONG SECTION 1 Scale: 1/2" = 1'-0" ASK-003 GUTTER Skylight repair increased scope

ATTACHMENT A EMERGENCY WORK BUDGET

HCM-Clerestory Project-Additional Scope-American Steeple (14 January 2021, revised 15 january 2021)

Task Description man-days materials Comments

Overhead Shelter

AS1-1 transfer material from parking lot to lawn 2 7,416 framing wood AS1-2 precut material 2 AS1-3 locate material in place 4 AS!-4 frame walls & plywood 7 AS1-5 frame roof &strap 10 5,000 shrink wrap AS1-6 frame, strape & plywood, long gable wall 7 AS1-7 miscell., install ties, cables, straps, etc. 4 AS1-8 rubber roof pitch pockets 2 AS1-9 install cleats at masonry and frame around dogho 4 Total man-days 42

Labor cost @ $800/man-day 33,600 Material costs 12,416 AS1-10 Engineering services 1,440 33,600 13,856 Total Cost-AS1 47,456

Repair Eaves and Curbing

AS2-1 demolition 6 AS2-2 replace channels and rotted brackets 7 4,000 AS2-3 prime & paint 2 AS2-4 re-frame & sheath 15 AS2-5 rubber roofing repairs 6 AS2-6 install interior finishes 6 AS2-7 miscellaneous work 4 Total man-days 46

Labor cost @ $800/man-day 36,800 Material costs 4,000 36,800 4,000

Total Cost-AS2 40,800

Combined Total Costs 88,256 less original contingency -12000

Net Additional Cost 76,256

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ORIGINAL PROJECT BUDGET

HCM-Clerestory Project Tasks & Costs (as of 14 Nov 2020)

Principal providers: A/S - American Steeple S/N - Structures North D-A - Design Associates Est. Cost Task Description Provider ($000s) Comments

Professional Services Note: excludes any services prior to awarding of grants

Structures North S/N 30.0 PS-1 skylight plan & manufacturing details PS-2 truss remediation details PS-3 provide specifications for project scope PS-4 support assistance for architect

Design Associates D-A 10.5 $5.0 consultation; $5.5 contract administrastion PS-5 ongoing liason and support to design engineer PS-6 interface with skylight panel glazing vendor PS-7 periodic review of onsite conditions PS-8 draft contract for selected contractor PS-9 ongoing contract administration

Professional Services sub-total 40.5

Site Preparation

SP-1 removal of large tree within the coutrtyard, prunning of others HCM vendor 0.0 work donated by Iron Tree Services SP-2 masonry patchwork on adjacent chimney A/S (sub) 2.5 estimate, TBD, timing and extent are weather dependent

Construction Prep and Demo C-1 Scaffolding A/S (sub) 38.0 C-2 Reinforce truss ends A/S 8.2 per design from S/N C-3 Cut & remove overhead pipes A/S 4.8 C-4 Prepare roof steel A/S 8.8 C-5 Painting A/S (sub) 16.0 C-6 Prepare East shed roof skylight A/S 1.0 C-7 Install galvanized wire netting A/S 1.0 C-8 Reapirs on West end glass wall A/S 8.0 includes $1.0 (est.) for some roof wire glass to be reused on wall C-9 Remove wood & plexium on West end A/S 4.4

Install New Clerestory C-10a Dismantle and remove existing panels and mullions A/S 12.0 C-10b Fabricate new copper mullions and tabs A/S (sub) 25.2 per design from S/N C-10c Tempered and laminated safety glass panels A/S (sub) 45.1 C-10d Fabricate/install curbing, flashing, counter-flashing A/S 25.3 C-10e Assemble/install new skylight panels A/S 26.8

C-11 Shipping & handling A/S 4.2 C-12 Other materials A/S 10.2

Construction-related sub-total - project scope for A/S 241.5

Total Project 282.0

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ATTACHMENT B ORIGINAL SKYLIGHT REPAIR DOCUMENTS

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14 SHEET TRUSS A TRUSS B TRUSS C 1.1 TRUSS D D E S I G N A S S O C I A T E S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 COLUMN NO. SHEET I N C 1.3

A R C H I T E C T U R E

P L A N N I N G H I S T O R I C G P R E S E R V A T I O N L

A A A A A A A A A A A A A A A 4'-2" 1/2" F 1035 Cambridge Street

M M M M M M M 3'-7 K K Cambridge MA 02141 J T 617 661 9082

8" N F 617 661 2550 NO. E PO Box 1520

A A A A A A A A A A A A A A A A A A A A A A A A F G ROW Nantucket MA 02554

SHEET T 508 228 4342 1.1 SHEET 1.3 F 508 228 3428

SHEET http://www.design-associates.com 1.3 D PRESERVATION & RESTORATION AT A A A A A A A A A A A A A A A A A A A A A A A A HAMMOND CASTLE

C MUSEUM B B B B B B B B B B B B B B B B B B B B B B B B 80 Hesperus Ave Gloucester, MA 01930

B B B B B B B B B B B B B B B B B B B B B B B B F G B MARK DATE REVISIONS

SHEET A 9/16/2020 2020-0916 ISSUED FOR QTY REVIEW 1.1 B 11/6/2020 ISSUED FOR PERMIT

C C C C C D D D D D D D D E E E E E D D D D D D D H A

Print Date:

PROJECT NORTH

0 2 3 4 5 67 FT SKYLIGHT PLAN 1.0 SKYLIGHT GLAZING AND MULLION SCOPE OF WORK: D E S I G N 1. Fabricate samples of all replacement parts to confirm fit and function. 2. Remove and replace all copper caps at sloped mullions with 16 oz. red copper (OR 20 oz. at installers A S S O C I A T E S discretion) a. Secure to mullions with wire ties at 24” or closer spacing of gauge to be determined on site and of metal compatible with the copper cap. 3. Remove and replace the copper cap along full length of skylight ridge with 16 oz. red copper (OR 20 oz. at I N C installers discretion) a. Install after sloped mullion caps, slot to receive mullion caps, apply sealant at slot for weather resistance at intersection of parts. 4. Remove and replace all cross bars at meeting line of glass sheets with new 20 oz. red copper cross bars. a. See drawings for new profile A R C H I T E C T U R E b. Each horizontal mullion must fully span between sloped mullions for proper function of condensation PROVIDE ISOLATION PER and drip gutter system. NOTE EIGHT AT THIS c. Apply silicone weatherproofing sealant lapped beyond width of bond breaker tape by ¼” minimum onto CONDITION (~140 upslope sheet of glass and ¼” minimum onto exposed copper. LOCATIONS) 5. Remove and replace all copper mullions from curb to ridge with new 20 oz. red copper mullions. P L A N N I N G 3. RIDGE CAP AND MULLION TO BE REPLACED 5&6 EXISTING MULLION AND CURB TO BE REPLACED a. See drawings for new profile. b. Fabricate new mullions to span between extant purlins (~5’ in length – field verify). H I S T O R I C i. Lap upper mullion over lower mullion ~ 1” so integrated channels drain toward apron weeps at base of skylight. P R E S E R V A T I O N c. Review anchorage of mullions to purlins with Structures North (see item 6 below for other provisions at the mullions). d. Add partial mullion at unprotected edge condition of skylight at north east corner at panel where skylight length is reduced at intersection with octagonal tower. 6. Remove and replace all copper skylight curbs at perimeter with new 20 oz. red copper mullions. 1035 Cambridge Street a. See drawings for new profile. b. Fabricate new curbs to receive mullions and glass and condensation drainage. Cambridge MA 02141 c. Integrate into new copper apron curbing. 8. CONTACT POINT BETWEEN STEEL PURLIN AND SLOPING COPPER MULLION 7. Remove all glass and glazing and replace. T 617 661 9082 a. Clean sloping mullion surfaces. Horizontal mullions will be replaced. Remove all glazing. Then clean the copper to receive the new glass. Non-oily dirt and dust can usually be removed with a 50% solution of F 617 661 2550 isopropyl alcohol (IPA) and water, pure IPA, or methylated spirit. Oily dirt or films generally require a degreasing solvent such as xylene or white spirit. Use two cloth method: a solvent wipe followed by a dry cloth wipe to lift and remove the solvent and contaminants suspended in the solvent. Multiple cleanings may be required to properly clean a substrate. b. Install bedding material for new glass – see drawings. PO Box 1520 c. Clean glass and set on bedding material and centered horizontally between sloping mullions. d. Inspect gap between glass and vertical sloped mullion fin. Gaps greater than 1/8” width will receive a Nantucket MA 02554 closed cell backer rod. T e. Install bond breaker tape lapped 1/8” minimum onto glass and 1/8” minimum onto vertical copper fin. 4. EXISTING CROSS BAR TO BE REPLACED 5. EXISTING MULLION TO BE REPLACED 508 228 4342 f. Install silicone weatherproofing sealant. Sealant must extend ¼” minimum beyond edge of bond breaker F tape onto glass and onto vertical copper fin. Sealant must be tooled into a concave shape. Sealant must 508 228 3428 be allowed to cure prior to installation of copper caps (see item 1.). 8. Install isolation pad of rubberized, waterproof tape between steel c-channel purlins and copper sloped mullions. a. C-channel purlins will be painted per the direction for painting the steel support trusses of the skylight. http://www.design-associates.com b. After the painting process layer two thicknesses of rubberized waterproof tape on top of the purlins where in contact with the copper sloping skylight mullions to fully separate the two metals from direct contact and to protect the steel from moisture and water run-off from the copper. 9. Install 1 ½” x 1/8” clips from mullions to C-channel purlins for mechanical connection. a. Review fastening between mullion and clip with design team. PRESERVATION & RESTORATION AT b. Friction fit to C-channel purlin HAMMOND

GLASS SIZES 8. CONTACT POINT BETWEEN STEEL PURLIN AND SLOPING COPPER MULLION CASTLE SI SF 4. EXISTING CROSS BAR TO BE REPLACED 5&6 EXISTING MULLION AND CURB TO BE REPLACED WH # A 21 63.5 1333.5 9.26042 63 MUSEUM B 21 64 1344 9.33333 49 C 21 61 1281 8.89583 5 80 Hesperus Ave D 21 51.5 1081.5 7.51042 15 Gloucester, MA E 21 36 756 5.25 5 SKYLIGHT APRON SCOPE OF WORK: F 21 36 756 5.25 2 01930 1. Definition for this Work: G 20.25 71 1437.75 9.98438 2 a. The apron is the perimeter of the skylight. At the base of the sloped walls of the skylight it is the portion of the skylight between the base curb of the skylight frame and the vertical return of the flat H 20.25 51.5 1042.88 7.24219 1 roof. At the west gable end it is a flashing cap at the top of the sloped glass west wall. At the east end of the skylight the apron consists of vertical flashing tucked under copper counterflashing let into the gable I NOT USED end wall of the organ hall of the castle. MARK DATE REVISIONS 2. Remove existing membrane roof covering and copper beneath and any underlayment material. J 28.5 10.75 412.125 2.86198 1 a. Record locations of weeps, clips and cleats of existing copper skirt as it is removed. A 9/16/2020 2020-0916 ISSUED FOR QTY REVIEW b. Examine substrate for damaged material. 21 27 567 3.9375 K 2 i. Patch/replace damaged substrate (material assumed to be wood sheathing boards 1-inch B 10/26/2020 FINAL GLASS QTY thickness) L* 14 26.5 371 2.57639 1 ii. Clean finished substrate to receive underlayment C 11/6/2020 ISSUED FOR PERMIT iii. install red rosin paper slip sheet over layer of asphalt saturated felt. 21 53.5 1123.5 7.80208 M 7 3. Fabricate new 20 oz copper apron to integrate with copper skylight frame. 153 a. Allow for expansion movement with seams and clips based on on-site review and discussion with 4. SPECIAL PROVISION AT NORTHEAST CORNER architect. * TRAPEZOIDAL GLASS - 28.5" X 21"X10.75"X27.5" b. Provide drip edge and allow for movement at junction with extant membrane roof to remain. 4. Special conditions: a. Provide internal gutter at upslope side of apron at chimney on south side of skylight. b. Note and provide for extended width of apron at last twenty feet at east end of north side of skylight. c. Note and provide for angled perimeter of skylight glass at last ten feet of west end of north side of skylight. Print Date: SKYLIGHT PANE QUANTITIES

NORTH

GLASS COLUMN 1234567 8 9 10 11 12 13 14 15 16 16 18 19 20 21 22 23 24 25 26

G L

G F AAAAAAAAAAAAAAAMMMMMMMK K J W L E E AAAAAAAAAAAAAAAAAAAAAAAAFG E A A S S D AAAAAAAAAAAAAAAAAAAAAAAA S T S T C BBBBBBBBBBBBBBBBBBBBBBBB

R B BBBBBBBBBBBBBBBBBBBBBBBBFG O W A CCCCCDDDDDDDDE E E E EDDDDDDDH SKYLIGHT GLASS MATRIX &

SOUTH WORK DESCRIPTION

4. SPECIAL PROVISION AT CHIMNMEY 1.1 1 7/8" 5/8" 3/4" 1/8" 1" 3/4" D E S I G N 1/16" 5/8" 3/4" 3/8" A S S O C I A T E S

7/8"

3/4" I N C CLR.

1 3/4"

1/4" 1 3/4" 1 165.00° 3/8" 1 1/8"

5/8" 1/4" A R C H I T E C T U R E 12 5/8" 2 12 3

3 5/8" P L A N N I N G

PANEL 5/8" GLASS 1 (2) PER WEEPS H I S T O R I C 155° 50 P R E S E R V A T I O N 155° 1/4" 3/4" 1 1/2" SKYLIGHT CURB PROFILE AND GLAZING INSTALLATION SEQUENCE CROSS BAR PROFILE AND GLAZING INSTALLATION SEQUENCE 1/4" 1/2" 1035 Cambridge Street Cambridge MA 02141 MULLION PROFILE AND GLAZING INSTALLATION SEQUENCE RIDGE PROFILE AND GLAZING INSTALLATION SEQUENCE T 617 661 9082 F 617 661 2550 MULLION BEYOND 1/4" TALL SETTING BLOCKS 1/4" TALL SETTING BLOCKS MULLION BEYOND, RESOLVE MULLION BEYOND (2) EQ. SPACED ACROSS (3) EQ. SPACED PER GLASS SHEET > 60" INTERSECTION WITH RIDGE (2) EQ. SPACED PER GLASS SHEET > 12" AND UP TO 59" THROUGH MOCK-UPS 1/4" TALL SETTING BLOCKS STRUCTURAL SEALANT PO Box 1520 HORIZONTAL DIMENSION STRUCTURAL SEALANT 1/4" TALL SETTING BLOCKS (2) EQ. SPACED ACROSS IS MINIMUM REQUIREMENT HORIZONTAL DIMENSION Nantucket MA 02554 (2) EQ. SPACED ACROSS 3/8" IS MINIMUM REQUIREMENT STRUCTURAL SEALANT 1/4" T 508 228 4342 HORIZONTAL DIMENSION

STRUCTURAL SEALANT 3/4" IS MINIMUM REQUIREMENT 1 HORIZONTAL DIMENSION STRUCTURAL SEALANT, SEE F 508 228 3428 1/4" IS MINIMUM REQUIREMENT MULLIONS 1/4" 3/8" CROSS BAR BEYOND, NOTE: TRIM EDGE OF 3/8" CROSS BAR TO FOLLOW CONTOUR OF http://www.design-associates.com 3/8" MULLION CROSS BAR GUTTER. THIS GUTTER MUST DRAIN COMPLETELY ONTO THE MULLION GUTTER PRESERVATION & RESTORATION AT MULLION GUTTER RIDGE GUTTER DRAINS TO MULLION GUTTER HAMMOND SKYLIGHT SKIRT ROOF WEATHERING SEALANT, MINIMUM DIMENSIONS LAMINATED SKYLIGHT GLASS, CASTLE BUTTS TO CROSS BAR 1/4" 1/4"

LAMINATED SKYLIGHT GLASS, TEMPORARY BLOCKS TO HOLD BUTTS TO CROSS BAR GLASS IN PLACE WHILE SEALANT MUSEUM CURES. REVIEW ANCHORING WITH DESIGNER GLAZING AND TEMPORARY BLOCKING LAMINATED SKYLIGHT GLASS, SPACE WHILE GSEALANT CURES, SEE MULLIONS 80 Hesperus Ave TEMPORARY BLOCK ACROSS EQUALLY BETWEEN MULLIONS GLASS TO HOLD IN PLACE WHILE SEALANT CURES Gloucester, MA

LAMINATED SKYLIGHT GLASS, BUTTS TO CURB 01930

MARK DATE REVISIONS

A 9/16/2020 2020-0916 ISSUED FOR QTY REVIEW

B 11/6/2020 ISSUED FOR PERMIT

16 OR 20 oz COPPER CAP, C 12/7/2020 REVISION SECURED WITH STAINLESS OR COPPER WIRE THOROUGH MULLION RIB AT 24" INCH D 12/7/2020 REVISION (2) INTERVALS

16 OR 20 oz COPPER CAP, WEATHERING WET SEAL SECURED WITH STAINLESS OR SEALANT, 1/4" MIN. BOND TO CROSS BAR COPPER WIRE THOROUGH GLASS AND TO MULLION RIB, MULLION RIB AT 24" INCH WITH BONDBREAKER TAPE MULLION INTERVALS OR NON-POROUS BACKER ROD TO PREVENT 3-SIDED ADHESION. ISOLATION PAD BETWEEN WEATHERING WET SEAL TOOL JOINT TO A CONCAVE PURLIN AND MULLION SEALANT, 1/4" MIN. BOND TO SHAPE WITH MAXIMUM DETPH Print Date: GLASS AND TO MULLION RIB, OF 2" X 1/8" BRASS CLIP WITH BONDBREAKER TAPE 3/8" 1/4" MIN OR NON-POROUS BACKER ROD METAL CLAMP TO MULLION 1/4" WET SEAL TO PREVENT 3-SIDED ADHESION. TOOL JOINT TO A CONCAVE

MIN 1/4" SHAPE WITH MAXIMUM DETPH

RIVET 1/8" OF

3/8" 1/16" 1 1/2"

1/4"1/8"

3/8" C-CHANNEL PURLIN NTE

SKYLIGHT COPPER FABRICATION & GLAZING SEQUENCE DETAILS MULLION CLIP DETAIL 1.2 D E S I G N A S S O C I A T E S SLIPPED INNER GLASS

4. CAP FLASHING WEST END OF SKYLIGHT 3. WOOD FRAMED I N C VENT UNIT

A R C H I T E C T U R E

1. DISPLACED MULLION 1. DISPLACED MULLION 3. WOOD FRAMED VENT UNIT P L A N N I N G

1. DISPLACED MULLION 1. DISPLACED MULLION 1. DISPLACED MULLION 1. DISPLACED MULLION 1. DISPLACED MULLION H I S T O R I C P R E S E R V A T I O N 2. MISSING OUTER AND INTERIOR GLASS 1035 Cambridge Street Cambridge MA 02141 T 617 661 9082 WEST WALL OVERVIEW F 617 661 2550

PO Box 1520 WEST WALL SCOPE OF WORK: Nantucket MA 02554 1. At displaced mullions (2), remove exterior and interior glazing on either side of displaced mullion, remove base curb flashing to nearest seam to displaced mullion. Inspect mullion for condition, assume reuse. At base install a T 508 228 4342 brace (to be designed when conditions are exposed) to restrain bottom end of mullion from future displacement. Adjust mullion to align with undisplaced mullions in glass wall and engage to brace. Replace apron F 508 228 3428 copper with new pieces – assume 20 oz. copper. 4. CAP FLASHING WEST END OF SKYLIGHT 4. CAP FLASHING WEST END OF SKYLIGHT a. At replaced apron restore weep system for drain of condensation off glass and moisture conveyed by mullions to base of glass. http://www.design-associates.com 2. Replace broken glass and missing weather side glass with new wired glass or laminated safety glass with wired glass pattern, whichever is more cost effective. Replace broken and missing interior glass with clear sheets of laminated glass. 3. Remove wood framed venting unit. Create new copper mullions for opening. Install replacement glass per item 2 PRESERVATION & RESTORATION AT above. 4. Replace cap flashing at west end of skylight coordinated with the mullion cap at the first row of skylights. HAMMOND CASTLE MUSEUM

“DOG HOUSE” VENTING SKYLIGHT SCOPE OF WORK: 80 Hesperus Ave 1. For the doghouse remove broken glass and install whole glass culled from salvage at skylight glass removal. 2. Remove and replace all copper caps at sloped mullions with 16 oz. red copper (OR 20 oz. at installers Gloucester, MA discretion) a. Secure to mullions with wire ties at 24” or closer spacing of gauge to be determined on site and of 01930 metal compatible with the copper cap. 3. Remove all glass and glazing and replace. a. Remove all glazing. Then clean the copper to receive the new glass. Non-oily dirt and dust can usually be removed with a 50% solution of isopropyl alcohol (IPA) and water, pure IPA, or methylated spirit. Oily 2. INSPECT CHIMNEY CONDITIONS WITH DESIGN TEAM 4. PROTECT WITH BANDED PLYWOOD dirt or films generally require a degreasing solvent such as xylene or white spirit. Use two cloth method: a solvent wipe followed by a dry cloth wipe to lift and remove the solvent and contaminants suspended in the solvent. Multiple cleanings may be required to properly clean a substrate. MARK DATE REVISIONS b. Install bedding material for salvage glass – glazing tape or bead of silicone structural adhesive – NOTE: due to reuse of existing mullions for this area ONLY bedding material is 1/8” depth. A 9/16/2020 2020-0916 ISSUED FOR QTY REVIEW c. Clean glass and set on bedding material and centered horizontally between sloping mullions. 3. REMOVE LOOSE MATERIAL, SALVAGE PIECES THAT d. Inspect gap between glass and vertical sloped mullion fin. Gaps greater than 1/8” width will receive a ARE LOOSE BUT MAY NEED TO BE REPLICATED B 11/6/2020 ISSUED FOR PERMIT closed cell backer rod. e. Install bond breaker tape lapped 1/8” minimum onto glass and 1/8” minimum onto vertical copper fin. f. Install silicone weatherproofing sealant. Sealant must extend ¼” minimum beyond edge of bond breaker tape onto glass and onto vertical copper fin. Sealant must be tooled into a concave shape. Sealant must be allowed to cure prior to installation of copper caps (see item 1.). 4. Replace pitted copper and copper damaged by reaction with steel screws and fasteners around frame and on body of housing. a. Intent of work is to retain as much weather resistant existing material as prudent and specifically retain existing louvers and as much of body and frame as feasible. 4. Install stainless steel mesh netting below skylight for catching debris in case of glass breakage.

CHIMNEY STUCCO AND CAST STONE TEMPORARY PROTECTION: Print Date: 1. Prepare access for chimney. 2. Inspect conditions with design team. 3. Protect surfaces below from work and possible debris 4. Remove loose material. 4. RETAIN INTACT COPPER, SELECTIVELY REPLACE 4. RETAIN INTACT COPPER, SELECTIVELY REPLACE 1. REPLACE MULLION CAPS a. Salvage loose cast material that still retains profile sufficient for future replication and store on site at PIECES PITTED BY WEATHER OR GALVANIC ACTION PIECES PITTED BY WEATHER OR GALVANIC ACTION owner’s direction for use in future repairs. 5. Install banded plywood cover. a. Review banding and sheet layout with design team. b. Install to minimize damage to extant material and protect adjacent surfaces from impact by falling material from chimney.

WEST SLOPING GLASS WALL, DOG HOUSE & CHIMNEY WORK DESCRIPTIO 1. REPLACE MULLION CAPS DOGHOUSE FROM SOUTH - NOTE HORNETS NEST IS GONE 3. REPLACE GLASS WITH SALVAGE GLASS 1.3