AE Response 20-09-15r RR QUESTIONS.pdf

PDF 12 MB Posted Sep 15, 2020

Attached to: Y1DA--632-16-104 Replace Roof | Actionable Package:6/10 l Phase I presol | Offers due: TBD-IFB not issued | Planned Award 9/10| Comment: 8/6- posted IFB on 8/4 on FBO for 30 days. requested emails to schedule site visit for week of 8/10
Solicitation number: 36C24220B0057
Issued by: Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 2

About this file

Written by GovTribe AI · Dec 27, 2023

This notice is for a federal construction contract solicitation to replace the roof of Building 200 at the Northport VA Medical Center in Northport, New York. The solicitation number is 36C24220B0051 and offers are due on August 10, 2020, with planned contract award by September 10, 2020. The cost estimate for the project ranges from $2,000,000 to $5,000,000. The scope of work involves furnishing all labor, materials, and services to remove the existing roof and install a new roof in accordance with project drawings and specifications. The contract completion time is 365 calendar days from notice to proceed. This opportunity is set aside for Veteran Owned Small Businesses and offers must be submitted in hard copy by the specified due date.

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File	Type	Posted
36C24220B0057 0003.pdf	PDF	Sep 16, 2020
36C24220B0057 0002_1.docx	DOCX document	Sep 15, 2020
36C24220B0057.docx	DOCX document	Aug 10, 2020

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ThinkForm Design Architect LLC

38 EAST BROAD STREET, SUITE 3

HOPEWELL, NJ 08525

P: 855.821.0274 F: 609.644.4397 ThinkFormArchitects.com

REPLACE ROOF at NORTHPORT VAMC Project No. 623-16-104

SUBMITTED QUESTIONS

Response Issued: 15 Sept 2020

1) Drawing G002 indicates sidewalk shedding, temporary fencing, stair scaffolding. Please provide a scaled and detailed drawing with dimensions for the work of sidewalk shedding, temporary fencing, stair scaffolding and specify respective material to be used.

RESPONSE: G002 site plan drawing is listed at a scale of 1/64” = 1’-0”. The General Notes on the same sheet (G002) outline the requirements for the sidewalk shedding (notes 6,7 & 8 specifically) and scaffolding.

2) Please confirm there is no phasing work required for this project.

RESPONSE: Note 5 on A101 and A102 states: GC to provide demolition and roof replacement phasing schedule for VA approval.

3) Drawing H-101 asbestos abatement note no. 7 states that contractor must provide a generator for all electricity requirements. --- Can VA allow contractor to use power from building.

RESPONSE: Gasoline powered equipment is not allowed. The VA will coordinate temporary power locations from existing sources and the contractor to provide connections, raceways, wiring, devices etc. for temporary power and lighting as necessary. The contractor to ensure safe installation including GFCI of temporary power sources and equipment by compliance with all applicable electrical code requirements and OSHA requirements for temporary electrical systems.

4) Will the VA hire the Certified Industrial Hygienist for the asbestos abatement work?

RESPONSE: The contractor is responsible to hire a Contractor's Professional Industrial Hygienist (CPIH/CIH) reference specification 02 82 13.21 for requirements.

5) Will VA do the area and air monitoring for asbestos abatement work?

RESPONSE: The contractor is responsible to hire a Contractor's Professional Industrial Hygienist (CPIH/CIH) reference specification 02 82 13.21 for requirements. The CPIH is required to perform continuous asbestos abatement monitoring, inspection and testing for the safety of the contractor’s employees, reference specification 02 82 13.21 for additional information including but not limited to paragraph 2.3. The VA though the A/E will perform asbestos monitoring, inspections and testing with an independent industrial hygienist consultant (VPIH/CIH) to perform various services on behalf of the VA. The VPIH/CIH will perform the necessary monitoring, inspection, testing, and other support services to ensure that VA patients, employees, and visitors will not be adversely affected by the abatement work, and that the abatement work proceeds in accordance with these specifications, that the abated areas or abated buildings have been successfully decontaminated.

Page | 2

6) Spec section 01 35 26 page 13, para 1.7 states requirements of SSHO, please confirm if contractors site supervisor can simultaneously perform the duties of SSHO if he has the required credentials.

RESPONSE: Refer to specification 01 35 26 para 1.7 C which states in part that the SSHO has to be a separate qualified individual from the Prime Contractor’s Superintendent and/or Quality Control Manager with duties only as the SSHO.

7) Spec section 01 35 26 page 15, para 1.9B states a CSP shall conduct a monthly site safety inspection. -- Please advise if contractor’s SSHO can perform these CSP’s duties or if contractor has to hire an independent personnel/ agency.

RESPONSE: The CSP (Certified Safety Professional) cannot be the same person as the SSHO (Site Safety and Health Officer). The CSP or CSHT (Construction Safety and Health Technician) can be a corporate safety professional or independently contracted.

8) Spec section 01 45 29 para 1.1. states that testing laboratory to be retained by contractor. – Please advise what material tests are required.

RESPONSE: Specification Section 01 45 29 details testing requirements. Refer to 3.8 Concrete,

3.13 Masonry and 3.18 Type of Test.

9) Spec section 04 10 00 para 1.1 states repoint existing damaged masonry joints. --- None shown on drawings. Please provide quantity or allowance amount so that all the contractor can bid on the same information.

RESPONSE: Limited repointing is only expected at the Penthouse walls near expansion joints @ column lines H, 6 and H, 8. For the purpose of bidding, assume a total area of 20 square feet.

10) Drawing A-101 note no.4 states GC to conduct new roof infrared scan (see specs). --- There are no specs for infrared scan, please provide the same.

RESPONSE: Specification Section 07 01 50.19, 3.1 ‘Examination’ lists the requirements for the infrared scan.

11) Spec section 01 00 00 page 25 para 1.29 and para 1.30 indicates construction sign and safety sign, at the end of this spec section there are two Sign drawings, size shown is 6’ H x 8’ W. – Please clarify if the construction and safety sign are required and should be of this 6’ x 8’ size?

RESPONSE: The drawings at the end of the specification section illustrate the requirements of the VA Construction Sign (SP-24.01). The VA Safety Sign (SP-24.04) have been attached to this letter for reference. Both signs are required and shall be located at the entrance to the staging area.

12) Drawing A-101 and A-103 indicates replace existing guardrail system with new. Please provide specification for the new guardrail system.

RESPONSE: Drawing A-103 notes new 42” high non-penetrating guardrail system. Detail 7 on sheet A502 details the system and lists a basis-of-design product noting contractor may substitute with an or-equal product.

13) Please specify thickness in inches of the new roof insulation. None shown in drawing or specifications.

RESPONSE: Specification Section 07 01 50.19, 1.1 B lists 3” of insulation on the roofing (NIC the Penthouse roof). GC to field confirm and match existing.

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14) Drawing A-101 note no.4 states Sloped to drain lightweight perlite concrete to be demolished in the select areas shown on the roof plans ( approx. 16.305 SF of first floor roof area shown). Prior to the lightweight concrete demolition, GC to conduct new roof infrared scan to confirm wet areas and pull test to be conducted to finalize demolition area scope. Existing lightweight concrete that passes pull tests will result in a smaller area required to be demolished. GC to coordinate with VA COR. --- This is confusing, below are the questions:

A) What is the thickness of the existing lightweight concrete which requires to be demolished? Is there any other layer of material which has to be removed too?

RESPONSE: Existing documents from a 1994 roof replacement project lists the existing lightweight concrete as 4” thick at the high point and 2” thick at the roof drains. GC to field confirm.

B) It states, ‘pull test to be conducted to finalize the demolition scope area. Existing lightweight concrete that passes pull tests will result in a smaller area required to be demolished’. --- How can contractor determine at this bidding stage as to what area passes the pull tests? Please clarify this and provide an allowance amount OR provide an confirm quantity of the area to be demolished for the bid so that all the bidding contractors can bid on the same information.

RESPONSE: Contractor is to bid the area to be demolished as called out on the drawings (see attached revised drawing A-102 dated 9/15/2020 clarifying area of the 4th Floor and Penthouse).

Specification Section 01 00 00 page 2, B: VARIATION OF ESTIMATE QUANTITY requires Unit Costs to be filled in. These unit costs will be used by the VA during the construction when it is specifically determined the amount of material to be demolished and/or replaced.

C) Does this concrete replacement work required to be done in phases? If yes, then how many phases for 1st floor and how many for the 4th floor?

15) Spec section 03 52 00 para 3.3A to D indicates the steps/method of placing the new ‘lightweight concrete roof insulation’. Please confirm this is how the new system will be placed? Please specify the thickness of insulation board. And as per para 3.4 C one ( 1 ) coat of sealer is required on top of new concrete, is this correct?

RESPONSE: Existing building construction is structural concrete with lightweight sloped concrete topping. Refer to para 3.2 A to K. Existing documents from a 1994 roof replacement project lists the existing lightweight concrete as 4” thick at the high point and 2” thick at the roof drains. GC to field confirm.

RESPONSE: Specification Section 07 01 50.19, 1.1 B lists 3” of insulation on the roofing (NIC the Penthouse roof). GC to field confirm and match existing.

RESPONSE: 3.4C is referring to an Interstitial Deck, not the Roof Deck.

16) Drawing G-002 general site note # 3 states contractor to provide scaffolding stair tower for access to and from 1st floor roofs and 4th floor roofs. --- Please provide building elevations so that contractor can determine the heights of stair towers.

RESPONSE: Please see the attached existing 1967 building elevations for reference only.

Page | 4

17) Spec section 03 52 00 is for Lightweight Concrete Roof Insulation, as there is no detailed drawing Please provide a cross section drawing of the new lightweight concrete work showing thickness of the new concrete, composition/materials and what is the existing surface below the concrete? Is it a corrugated metal deck?

RESPONSE: Detail 1/A-501 shows a detail of the roof assembly. Existing documents from a 1994 roof replacement project lists the existing lightweight concrete as 4” thick at the high point and 2” thick at the roof drains. GC to field confirm.

18) Drawing A-102 note no.4 has quantity of 16,305 SF listed for the demolition of existing lightweight perlite concrete. – This is the same quantity listed for the 1st floor on drawing A-101, is this a error/typo?

Please clarify.

RESPONSE: Reference attached revised Drawing A-102 dated 9/15/2020.

19) What is the strength requirement of the new light weight concrete.

RESPONSE: As stated in the lightweight concrete specifications 03 52 00: Compressive strength:

Minimum 862 kPa (125 psi) when tested in accordance with ASTM C495 except do not oven dry cellular concrete samples.

20) As the concrete replacement work is in patches all over the roof area, can agency allow Sakrete concrete mix bags with Perlite aggregate mix for the work of Lightweight Concrete Roof Insulation?

RESPONSE: Material submittal required to meet or exceed the specification requirements. Exact products are subject to review during the submittal review process to demonstrate integrity of the material for its intended use.

21) Is there any layer of vapor barrier below the existing light weight concrete which can be used as a temporary roof protection after the removal of existing light weight concrete. Also if there no existing vapor barrier present then can contractor provide a new vapor barrier layer which will be used as roof protection?

RESPONSE: It is not known if a vapor barrier exists below the light weight concrete or the condition if one does exist. Per the roofing specifications, the Contractor is responsible for providing temporary protections during the reroofing and maintaining building watertight.

22) How much concrete removal will be allowed at one time?

23) Please provide a detailed drawing for safety netting for fall protection on roof, is this safety netting required throughout the length of parapet walls on 1st and 4th floor roofs?

RESPONSE: Refer to General Site Note 2 & 2A on sheet G-002. Safety netting is listed as one of the options the Contractor may choose for the safety of their employees. Note 9 outlines the requirements if safety netting is chosen as part of their safety plan.

24) There is a spec section for Fire stopping, please specify the scope of the work for this firestopping work.

RESPONSE: Section included with package in case incidental existing fire stopping was encountered and required replacement. No specific location is identified, however, should a penetration be discovered or created, the contractor is to follow requirements per this specification section.

Page | 5

25) There is a spec section for joint sealants, please specify the scope of the work for this firestopping work.

RESPONSE: Section included for work around building face perimeter where existing thru-wall flashing is being re-used and along the existing skylight frame/curb.

26) Drawing A-103 general roofing note # 2 states Contractor shall coordinate with VA when/if existing mechanical equipment can be taken offline and for how long for each area and each piece as required to demolish existing roofing and install a new roofing system. – we have below questions related to this work:

A) Please identify on drawings which equipment needs to be taken offline, so that contractor can consider the cost in his bid price.

RESPONSE: GC will have to install temporarily supports for all mechanical units/piping for new curbs and roofing work. GC to determine the need to lift equipment as required to properly flash and provide a complete watertight and warrantied roof. GC to coordinate with the VA when/If each unit/equipment is to be taken offline with the shortest possible durations as part of GC’s phasing schedule. Removing and relocating units is not acceptable.

B) Offline means temporary remove/move the existing equipment OR just to disconnect it. Please clarify.

C) Most of the existing equipment are installed on curb, dunnage or other support. So what is the need to take offline?

D) Is it contractor’s responsibility to take the equipment offline OR will VA do it?

RESPONSE: The VA to approve contractor’s request for any utility shutdowns, reference project specification 01 00 00-11 — 1.6 M, the contractor is responsible for the work required.

27) Does VA require any specific roof manufacturer or is there a basis of design for new roofing system?

RESPONSE: The contractor may submit any product that meets or exceeds the specification requirements.

Page | 6

28) Drawing A-105 note on Northeast tower states Remove and replace rusted steel treads for both stairs.

– please specify how many treads are rusted, also provide a drawing.

RESPONSE: There are a total of 16 (sixteen) 4’ wide treads between the 2 stairs to be replaced.

See attached photo.

29) Question about staging for the concrete boom pump. when going to place concrete with boom, stage an area at the Northwest corner of the building near the loading docks for the concrete boom and concrete trucks? We believe it is a closer area than the area designated for staging. This would also be only for the days when we decide to pour concrete which can be on Saturdays, given if the hospital wants to keep traffic to a minimum.

RESPONSE: A Construction Site Plan and lift plan will have to be submitted by the contractor and VA approved, reference contract documents for additional information including but not limited to specification 01 35 26, OSHA regulations etc.

30) If the existing structural deck does not have a waterproofing system should contractor quote for remove and replace concrete the same day or temporary roofing while the lightweight concrete is replaced?

Page | 7

31) Can contractor use winch hoist for material mobilization to roofs? Do they need a permit? Can anyone operate the winch hoist, or will certification be necessary?

RESPONSE: The contractor to submit a Construction Site Plan to the VA for review and approval indicating the proposed location of a material hoist including all requirements per the contract documents, OSHA, building codes, etc. The VA does not issue a specific permit but the contractor is responsible to submit all applicable information including site investigations and signed/sealed professional engineer hoist drawings to ensure the existing structure and/or grade can handle the loading as well as the hoist design itself. Gasoline powered equipment is not allowed.

32) Drawing A-501 detail no.6 is for lightning protection. It states existing terminal re-attached to the new roof edge coping. --- Does this work of removal and re-attached has to be done by a licensed lightning protection contractor or licensed electrical contractor? Or contractor can do this work with his own crew?

Also is certification required that the lightning protection is returned to the existing operation?

RESPONSE: Reference attached revised drawing A-501 dated 9/15/2020.

33) For the repairs on the existing LWC, can it be filled with insulations board in lieu of concrete?

RESPONSE: As noted on the documents, the repairs are to be done in-kind with LWC.

34) Are you requesting all new railing system or can it be refurbished?

RESPONSE: First floor roof calls for a new railing system at specific locations – see A-103, A- 104 and detail 7/A-502. The 4th Floor roof notes that the existing guardrails are to be salvaged and reset – see A-105, A-106 and detail 4/A-502.

35) How long are the fans and HVAC units allowed to remain off, is there temporary ventilation needed while this roof work is being done?

RESPONSE: GC to coordinate with the VA when/if each unit/equipment is to be taken offline with the shortest possible durations as part of the GC’s phasing schedule. Removing and relocating units is not acceptable. HVAC intakes and exhaust, vents and drains that cannot be shut-off must be extended using an airtight rigid sheathing to a minimum height of ten feet (10’) above the work area during roofing work.

36) Some of the cooling tower piping (which is 12”/10” and maybe 14” in dia) have to be removed for the roofing work to be done and then reinstalled-how long the tower can be down. Are we arranging temp chillers?

RESPONSE: Removing and reinstalling existing condenser water piping is not acceptable. The work must be done without removing any major piping system.

37) All the AC units are very old and have lived their lives. They all have Freon 22 refrigerant in them.

When we disconnect and relocate them for roofing work some piping has to be done and a new charge has to be introduced. R-22 has been discontinued since 1999 it is not available; There is some substitute refrigerant with minor modification to units can be used the efficiency and performance will be reduced-is this acceptable?

RESPONSE: Contractor to determine the need to lift equipment as required to properly flash and provide a complete watertight and warrantied roof. GC to coordinate with the VA when equipment is to be taken offline as part of GC’s phasing schedule. Removing and relocating units is not acceptable.

Page | 8

38) Detail 6 on A5.01 refers to re-attaching existing lightning protection components. Please advise if the existing lightning protection system needs to be re-certified for its UL rating.

RESPONSE: Reference attached revised drawing A-501 dated 9/15/2020.

- - - END OF QUESTIONS - - -

12/2012 Page 11-4-35

Specialty Signs

SP-24.04

Construction Sign: Safety

Size Sign Panel:

914 mm H x 1219 mm W 3' H x 4' W

Description Sign used in construction sights to provide information regarding frequency of on site construction related accidents. Sign panel is built with a region to display changeable numbers to indicate the number of days since time was lost due to a construction accident.

Message Configuration Refer to message layout drawing for dimensions.

Sign Components Posts (metal or wood) and MDO plywood or aluminium sign panel.

Sign panel may or may not be framed. Sign panel is equipped with a region to display changeable numbers.

Graphic Process Surface applied vinyl or screened graphics

Colors For background, type and graphic colors, refer to color chart.

Typography Helvetica Bold

Without a Lost Time Accident

THE LIFE YOU SAVE MAY BE YOUR OWN

General Contactors Firm Name

This Project Has Worked Days 0 0 0

Mounting Post mounted sign panel

Installation It is recommended that this sign be placed at a visible location on a construction site near field office.

http:SP-24.04

12/2012 Page 11-4-36

Specialty Signs

SP-24.04

Construction Sign: Safety

4" (101 mm)

9" (228 mm)

1-1/2" (38 mm)

3/4" (19 mm)

(1219 mm)

2” x 4” framing

4” x 4” Posts

PLAN VIEW Face

4" 48"

(101 mm)

36" (914 mm)

All visible surfaces to be primed and painted

Sign attached together with wood screws & lag bolts

Changeable Numbers

Face panel to be an exterior grade.

MDO sheet or an aluminum skin laminated to a wood or plastic core is preferred with edges physically sealed.

4” x 4” Posts

Depth & type of footing determined by existing soil conditions

ELEVATION END VIEW

http:SP-24.04

4TH FL & PENTHOUSE EXIST ROOF PLAN DEMO

SW TOWER - LOOKING NORTH NW TOWER - LOOKING SOUTH NE TOWER - LOOKING NORTH EAST LINK - LOOKING SOUTH SE TOWER - LOOKING WEST PENTHOUSE - LOOKING SW

A-102

FOURTH FLOOR & PENTHOUSE

EXISTING ROOF DEMOLITION PLAN

KEY MAP - BLDG 200, VAMC NORTHPORT

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

Fi le

P at h 6/

P M

100% BID PACKAGEOffice of Construction and Facilities Management

U.S. Department of Veterans Affairs

21 4 5 6 7 8 9 10

PhaseARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

Asbestos Abatement Consultants:

Project Director

12 MAY 2020 RD TRBRevisions: Date:

632-16-104

79 MIDDLEVILLE RD, NORTHPORT, NY 11768

ROOF REPLACEMENT

AT THE NORTHPORT VAMC

THINKFORM DESIGN ARCHITECT LLC

38 EAST BROAD STREET

HOPEWELL, NJ 08525

T:855.821.0274 F:609.644.4397 Russell DiNardo, AIA NY 031521-1

EGAN ENVIRONMENTAL CONSULTING, INC.

14 HIGH STREET

MAHWAH, NEW JERSEY 07430

P: 201.848.7790

PENTHOUSE - LOOKING NE

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NORTHWEST TOWER

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PIPE RAILING

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PRECAST COPING

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EXISTING THRU-WALL FLASHING TO REMAIN, TYP. SEE DETAIL 10/A-501

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REMOVE ABANDONED CURBS AND PITCH POCKETS. INFILL NEW VOIDS TO MATCH ADJACENT

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AutoCAD SHX Text NORTHWEST TOWER 9,780 SF 9,780 SF SF NORTHEAST TOWER 9,780 SF 9,780 SF SF WEST LINK 935 SF 935 SF SF EAST LINK 935 SF 935 SF SF SOUTHWEST TOWER 9,780 SF 9,780 SF SF SOUTHEAST TOWER 9,780 SF 9,780 SF SF PENTHOUSE 4,055 SF 4,055 SF SF TOTAL 45,045 SF45,045 SFSF

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FOURTH FLOOR ROOF & PENTHOUSE AREAS

AutoCAD SHX Text ROOF AREAS LISTED ARE APPROXIMATE. CONTRACTOR RESPONSIBLE FOR VERIFYING ACTUAL AREAS

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NOTES

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SYMBOL KEY

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1. EXISTING ROOF CONSTRUCTION: CONCRETE STRUCTURAL SLAB W/ LIGHTWEIGHT PERLITE CONCRETE TOPPING SLOPED TO DRAIN. 3"TH POLYISOCYANURATE INSULATION BOARD W/ 3-PLY BUILT-UP ROOFING W/ GLAZE COAT AND ALUMINIZED ASPHALT COATING. 2. EXISTING EQUIPMENT, VENTS AND DRAINS SHOWN (AT APPROXIMATE LOCATIONS) AT TIME OF DOCUMENTATION. CONTRACTOR TO FIELD VERIFY AND NOTE ANY CHANGES PRIOR TO CONSTRUCTION START. 3. EXISTING BUILT-UP ROOFING & INSULATION BOARD DOWN TO THE LIGHTWEIGHT SLOPED CONCRETE TO BE FULLY REMOVED AND REPLACED WITH NEW ROOFING. DEMOLITION TO INCLUDE BUILT UP ROOFING SYSTEM IN ITS ENTIRETY, ALL INSULATION BOARD, ALL ROOF DRAINS, ALL ROOFTOP EXPANSION JOINTS, ALL ROOFTOP AREA DIVIDERS, ALL ROOFTOP PERIMETER EDGE FLASHING, AND ALL EQUIPMENT CURB FLASHING. SEE DWG'S A-501 & A-502 FOR DETAILS OF PROPOSED NEW DETAILS TO COORDINATE EXTENT OF DEMOLITION, 4. SLOPED TO DRAIN LIGHTWEIGHT PERLITE CONCRETE TO BE DEMOLISHED IN SELECT AREAS SHOWN ON THE ROOF PLANS (APPROX 1,500 SF OF 4TH FLOOR ROOF AREA AND 4,055 SF OF PENTHOUSE ROOF AREA SHOWN). PRIOR TO THE LIGHTWEIGHT CONC DEMOLITION, GC TO CONDUCT NEW ROOF INFRARED SCAN (SEE SPECS) TO CONFIRM WET AREAS AND PULL TEST TO BE CONDUCTED TO FINALIZE DEMOLITION AREA SCOPE. EXISTING LIGHTWEIGHT CONC THAT PASSES PULL TESTS WILL RESULT IN A SMALLER AREA REQUIRED TO BE DEMOLISHED. GC TO COORDINATE WITH VA COR. 5. GC TO PROVIDE DEMOLITION AND ROOF REPLACEMENT PHASING SCHEDULE FOR VA APPROVAL.

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4 ROOF NW TOWER

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4 ROOF NE TOWER

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4 ROOF SW TOWER

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4 ROOF SE TOWER

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PENTHOUSE ROOF

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1 ROOF WEST

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1 ROOF NORTH

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1 ROOF EAST

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1 ROOF SOUTH

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INTENSIVE CARE (NIC)

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AMB (NIC)

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(NIC)

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ENTRY ADDITION (NIC)

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NO SCALE

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REVISON 1 - DETAIL CLARIFICATION

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15 SEP 2020

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MODIFIED BIT ROOF ASSEMBLY - TYP ROOF DRAIN REPLACEMENT ROOF EDGE COPING AREA DIVIDER AREA DIVIDER MOD BIT TO EXIST LIQUID

LIGHTNING PROTECTION SUPPORT CURB EXPANSION JOINT BASE WALL FLASHINGWOOD CURB FLASHING

VENT FLASHING PITCH POCKET FLASHING EQUIPMENT MOUNTING PAD EMBEDDED METAL EDGE CONC COLUMN FLASHING

A-501

ROOF DETAILS

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

Fi le

P at h 6/

P M

100% BID PACKAGEOffice of Construction and Facilities Management

U.S. Department of Veterans Affairs

21 4 5 6 7 8 9 10

PhaseARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

Asbestos Abatement Consultants:

Project Director

12 MAY 2020 RD TRBRevisions: Date:

632-16-104

79 MIDDLEVILLE RD, NORTHPORT, NY 11768

ROOF REPLACEMENT

AT THE NORTHPORT VAMC

THINKFORM DESIGN ARCHITECT LLC

38 EAST BROAD STREET

HOPEWELL, NJ 08525

T:855.821.0274 F:609.644.4397 Russell DiNardo, AIA NY 031521-1

EGAN ENVIRONMENTAL CONSULTING, INC.

14 HIGH STREET

MAHWAH, NEW JERSEY 07430

P: 201.848.7790

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SHEET MTL COPING SLOPED TO DRAIN

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CONT WEATHERPROOF MEMBRANE ON TOP OF WALL - TURNED DOWN ON BOTH SIDES

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CONT SHEET MTL CLIP

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FASTENERS @ APPROX 8"O.C.

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EXISTING WALL CONSTRUCTION

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MEMBRANE FLASHING SHEET

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BACKER

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TWO LAYERS MODIFIED BIT ROOFING MEMBRANES

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CANT

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COVER BOARD

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RIGID INSULATION

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EXISTING LIGHTWEIGHT CONC SLOPED TO DRAIN - REPAIR/REPLACE WHERE DAMAGED

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POLYMER-MODIFIED BITUMEN CAP SHEET

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POLYMER-MODIFIED BITUMEN MEMBRANE STRIPPING SHEET

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POLYMER-MODIFIED BITUMEN PLY SHEET

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ROOF DRAIN STRAINER

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ROOF DRAIN CLAMPING RING

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EXISTING STRUCTURE

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ROOF DRAIN DECK CLAMP

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ROOF DRAIN CAST-IRON DRAIN BOWL - CONNECT TO EXISTING DRAINAGE PIPING

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MEMBRANE PLIES, METAL FLASHING & STRIPPING SHEET EXTEND UNDER CLAMPING RING

AutoCAD SHX Text 30" SQ (MIN) 2 1/2 LB LEAD OR 16 OZ SOFT COPPER FLASHING SET IN ROOF CEMENT AND FOLDED INTO DRAIN - PRIME TOP SURFACE BEFORE STRIPPING

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POLYMER-MODIFIED BITUMEN CAP SHEET (STAGGER OVER INTERPLY SHEET)

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POLYMER-MODIFIED BITUMEN INTERPLY SHEET

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COVER BOARD

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RIGID (POLYISOCYANURATE) INSULATION - NOTE: NO INSULATION AT PENTHOUSE ROOF

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INSULATED VENT SHEET

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EXISTING LIGHTWEIGHT CONC SLOPED TO DRAIN (REPAIR/REPLACE WHERE DAMAGED)

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EXISTING STRUCTURAL SLAB

AutoCAD SHX Text DETAILS FOR TWO-PLY MODIFIED BITUMEN ROOFING SYSTEM IN THIS DOCUMENT SHOW THE MINIMUM REQUIREMENTS THAT MUST BE MET. CONTRACTOR TO FOLLOW ROOFING MANUFACTURER REQUIREMENTS (MEETING OR EXCEEDING THE MIN NOTED WITHIN THE DOCUMENTS) AS TO ESTABLISH & MAINTAIN ROOFING MANUFACTURER WARRANTY

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SHEET MTL CAP

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CONT WEATHERPROOFING MEMBRANE TURNED DOWN ON BOTH SIDES OF DIVIDER

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CONT CHEET MTL CLIP

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FASTENERS @ APPROX 8"O.C.

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MEMBRANE FLASHING SHEET ADHERED TO BACKER

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BACKER

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EXTEND ROOFING PLIES ABOVE CANT

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CANT

AutoCAD SHX Text TWO 2x10 PRESSURE TRTD FWD NAILERS

AutoCAD SHX Text EXISTING 2x6 - REPLACE DAMAGED PIECES

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MODIFIED BIT ROOFING SYSTEM - SEE 1/A-501

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NO SCALE

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SHEET MTL CAP

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CONT WEATHERPROOFING MEMBRANE TURNED DOWN ON BOTH SIDES OF DIVIDER

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CONT CHEET MTL CLIP

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FASTENERS @ APPROX 8"O.C.

AutoCAD SHX Text LIQUID APPLIED REINFORCED MEMBRANE - VERIFY COMPATIBILITY W/ EXISTING LIQUID SYSTEM

AutoCAD SHX Text MODIFIED BIT PLIES AND MEMBRANE FLASHING ON OPP SIDE OF DIVIDER - SEE DETAIL 4/A-501 FOR CONSTRUCTION, SIM

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TAPE PER LIQUID ROOFING MANUFACTURER

AutoCAD SHX Text NEW 2x PRESSURE TRTD WD NAILERS - MATCH HEIGHT OF EXISTING ROOFING TO REMAIN

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EXISTING LIQUID APPLIED ROOFING SYSTEM TO REMAIN

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AutoCAD SHX Text TWO 2x10 PRESSURE TRTD WD NAILERS

AutoCAD SHX Text EXISTING TERMINAL RE-ATTACHED TO THE NEW ROOF EDGE COPING OR THE RE-SET EXISTING RAILING (MATCH EXIST CONDITIONS)

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SEE ROOF EDGE COPING DETAIL FOR CONSTRUCTION

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EXISTING LIGHTNING PROTECTION TERMINAL RE-SET IN SEALANT

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MEMBRANE PROTECTION PLY ADHERED TO ROOF MEMBRANE

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SEE MODIFIED BIT ASSEMBLY DETAIL 1/A-501

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NO SCALE

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EXISTING PIPING/EQUIPMENT

AutoCAD SHX Text EQUIPMENT SUPPORT SYSTEM (VIF EXIST) - PROVIDE TEMP SUPPORT OF EQUIP WHILE REPLACEMENT CURB & FLASHING ARE INSTALLED

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SUPPORT SYSTEM FASTENERS (FOR PIPING OR EQUIPMENT - VIF EXISTING) SET IN SEALANT

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SEE AREA DIVIDER DETAIL FOR CURB & FLASHING CONSTRUCTION

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SHEET MTL EXPANSION CAP

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CONT WEATHERPROOFING MEMBRANE LOOPED DOWN EXPANSION JOINT AND LAP OPP SIDE

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CONT CHEET MTL CLIP

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FASTENERS @ APPROX 8"O.C.

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MEMBRANE FLASHING SHEET ADHERED TO BACKER

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BACKER

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EXTEND ROOFING PLIES ABOVE CANT

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BATT INSULATION

AutoCAD SHX Text TWO 2x10 PRESSURE TRTD WD NAILERS

AutoCAD SHX Text EXISTING 2x6 - REPLACE DAMAGED PIECES

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MODIFIED BIT ROOFING SYSTEM - SEE 1/A-501 FOR ASSEMBLY, TYP

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NO SCALE

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10"± VIF

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CONT SHEET MTL CLEAT SECURED TO TOP OF WD NAILERS

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CANT

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EXISTING THRU WALL FLASHING

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EXISTING BRICK FACE

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EXISTING WEEPS

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VERTICAL GRADE ROOF CEMENT AND REINFORCEMENT

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FASTENERS @ APPROX 8"O.C.

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MEMBRANE FLASHING SHEET ADHERED TO BACKER

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BACKER

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EXTEND ROOFING PLIES ABOVE CANT

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CANT

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MODIFIED BIT ROOFING SYSTEM - SEE 1/A-501 FOR ASSEMBLY, TYP

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PRIME EXISTING WALL SURFACE AS REQ'D

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LIFT EXIST COUNTER FLASHING TO INSTALL NEW BASE FLASHING & RESET

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SEALING MATERIAL BTWN CURB & EQUIP

AutoCAD SHX Text EXISTING WD CURB - CHECK CONDITION OF EXIST & REPLACE W/PRESSURE TRTD WD WHERE REQ'D

AutoCAD SHX Text LINE OF ROOFTOP EQUIP - COORDINATE W/VA WHEN AND IF EQUIPMENT CAN BE TAKEN OFFLINE FOR NEW CURB FLASHING

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SHEET MTL RECEIVER AND COUNTERFLASHING

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FASTENERS @ APPROX 8"O.C.

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MEMBRANE FLASHING SHEET ADHERED TO BACKER

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BACKER

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EXTEND ROOFING PLIES ABOVE CANT

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CANT

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COVER BD

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RIGID INSUL

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INSULATED VENT SHEET

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EXIST LIGHTWEIGHT CONC - SLOPED TO DRAIN

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NO SCALE

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TOP OF FLASHING TO BE CAPPED OR ROLLED INTO PIPE APPROX 1"

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2 1/2 LB SHEET LEAD OR 16 OZ SHEET COPPER PIPE FLASHING

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EXISTING STACK

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ROOF CEMENT OR SEALANT PER ROOFING MANUFACTURER REQ'MNTS

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MOD BIT CAP SHEET

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MOD BIT MEMBRANE STRIPPING SHEET

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SET FLASHING FLANGE IN COMPATABLE ROOFING CEMENT - PRIME FLANGE BEFORE STRIPPING

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MOD BIT PLY SHEET

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NO SCALE

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EXISTING PIPE/CONDUIT/EQUIP

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POURABLE SEALANT - CROWN TOPPING

AutoCAD SHX Text WEATHERPROOF SHEET-MTL PENETRATION POCKET - VERIFY W/ SEALANT MANUFACTURER FOR REQ'D SEALANT DEPTH

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NON-SHRINK GROUT

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ROOF CEMENT OR SEALANT PER ROOFING MANUFACTURER REQ'MNTS

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MODIFIED-BIT STRIPPING PLIES

AutoCAD SHX Text FLANGE SET IN COMPATIBLE ROOF CEMENT OVER FIELD PLIES - PRIME FLANGE BEFORE STRIPPING

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NO SCALE

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EXISTING PRECAST CONC EQUIPMENT BLOCK RESET OVER NEW ROOFING.

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MEMBRANE PROTECTION PLY ADHERED TO ROOF MEMBRANE

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TWO-PLY MOD BIT ROOF ASSEMBLY - SEE 1/A-501 FOR ASSEMBLY, TYP.

AutoCAD SHX Text TEMPORARILY RELOCATE OR SUPPORT EXISTING ROOFTOP EQUIP FOR INSTALLATION OF NEW ROOFING - VERIFY & COORDINATE W/ VA REPRESENTATIVE WHEN & IF EQUIPMET CAN BE TAKEN OFFLINE

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NO SCALE

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COMPATIBLE SEALANT AT JUNCTION OF MEMBRANE AND EDGE METAL

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POLYMER-MODIFIED BITUMEN MEMBRANE STRIPPING PLIES

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SET FLANGE IN COMPATIBLE ROOF CEMENT - PRIME FLANGE BEFORE STRIPPING

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POLYMER-MODIFIED BIT CAP SHEET

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POLYMER-MODIFIED BIT INTERPLY SHEET EXTENDED OVER EDGE

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EXISTING WD BLOCKING - FIELD VERIFY CONDITION & REPLACE IF ROTTED

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SHEET METAL EDGE FLASHING

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CONT MTL CLEAT

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MEMBRANE FLASHING SHEETS ADHERED TO BACKING

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BACKER

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PRIME EXISTING WALL FACE AS REQ'D

AutoCAD SHX Text SHEETS EXTEND DOWN FULL FACE OF WALL - SEE BASE WALL FLASHING DETAIL 10/A-501 FOR TYP CANT AND MEMBRANE FLASHING TERMINATION

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EXISTING WALL AND ROOF SLAB CONSTRUCTION

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NO SCALE

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MEMBRANE FLASHING SHEET ADHERED TO BACKER

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BACKER

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EXTEND ROOFING PLIES ABOVE CANT

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CONT CANT

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PRIME EXISTING CONC TO TOP OF BASE FLASHING

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VERTICAL GRADE ROOF CEMENT AND REINFORCEMENT

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FASTENERS @ APPROX 8"O.C.

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SHEET METAL COUNTERFLASHING SECURED W/ CONC FASTENERS

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INSTALL SEALANT AND TOOL TO FACILITATE WATER RUNOFF

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EXIST CONCRETE

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INSULATED VENT SHEET

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INSULATED VENT SHEET

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EXIST SLOPED LIGHTWEIGHT CONC

AutoCAD SHX Text NOTE: EXISTING LIGHTNING PROTECTION CONNECTION POINTS ON DUNNAGE AND OTHER ROOFTOP EQUIPMENT TO REMAIN. WIRING TO BE RE-ATTACHED AS REQUIRED AFTER RE-ROOFING. UPON COMPLETION, CONTRACTOR TO SUBMIT CERTIFICATION THAT THE LIGHTNING PROTECTION SYSTEM HAS BEEN INSPECTED BY A UL REPRESENTATIVE, HAS BEEN APPROVED BY UL WITHOUT VARIATION AND CERTIFY THAT THE RE-ATTACHED SYSTEM IS FULLY OPERATIONAL.

AutoCAD SHX Text AT EXIST CONNECTION POINTS, RE-ATTACH EXIST LIGHTNING PROTECTION SYSTEM - SEE NOTE ON DETAIL 6/A-501

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AutoCAD SHX Text A-501

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REVISON 1 - DETAIL CLARIFICATION

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15 SEP 2020

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AE Response 20-09-15r RR QUESTIONS

SP-2404 Safety Sign

1-A-102 REV1

Sheets and Views

Layout1

1-A-501 REV1

Sheets and Views

Layout1

BLDG 200 Original Elevations

Scan r2020-9-14 EE

Scan r2020-9-14 NE

Scan r2020-9-14 SE

Scan r2020-9-14 WE

File details come from the government source that posted it. Updated Sep 15, 2020.