Attachment J3 - Drawing Addendum.pdf
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- Solicitation number
- 75F40121R00014
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This document includes two addenda to drawings for roof replacement projects at facilities of the Food and Drug Administration's National Center for Toxicological Research in Jefferson, Arkansas. The addenda modify roof plans to require unit pricing for patching and repairing light weight concrete roof decks, replacing deteriorated light weight concrete and metal roof decks, and applying these revisions to buildings 15, 53A, 53B, 53C, and 53D. The related federal contract opportunity is a solicitation from the Department of Health and Human Services Food and Drug Administration Office of Acquisition and Grant Services for roof replacements at buildings 15, 53A, 53B, 53C, and 53D in Jefferson, Arkansas.
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Text version
FDAIDI16.19
FDA Jefferson Laboratories Bldg. 15, 53A & 53B
ADDENDUM No.1 (WER) Page-1
ADDENDUM No. 1
TO: DRAWINGS
FOR: FDA Jefferson Laboratories
Bldg. 15, 53A, 53B & Mech. Room Roof Replacement & Interior Renovations
NCTR
3900 NCTR Rd.
Jefferson, AR 72076
DATE: APRIL 6, 2021
This addendum forms a part of the Contract Documents and modifies or interprets the Project Manual and Drawings, as noted below. Acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to do so may subject bidder to disqualification.
1. ADDENDUM DRAWINGS:
a. Sheet A6.2, Roof Plan Building 53A & Building 15. Refer to the Boxed Note entitled
“PATCHING AND REPAIR OF BLDG 15 LIGHT WEIGHT CONCRETE ROOF
DECK”. Delete this note entirely and replace with the following: “PATCHING AND
REPAIR OF BLDG 15, 53A & 53B LIGHT WEIGHT CONCRETE ROOF DECK.
Repair and patch light weight concrete roof deck with Siplast Sonoplast or equal per manufacturer’s recommendations. Provide a unit price per square foot for repair and patching deck.”
b. Sheet A6.2, Roof Plan Building 53A & Building 15. Add a Boxed Note as follows:
REPLACEMENT OF LIGHT WEIGHT CONCRETE ROOF DECK. Where the existing light weight concrete deck is deteriorated and/or compromised, completely remove the gypsum topping and light weight deck down to the existing support deck, from center of joist to center of joist. Rebar to remain. Provide a 1 ½” thick galvanized steel deck at the opening, spanning from joist to joist. Install rigid insulation over new steel deck with a ½” Densdeck or equal coverboard over the insulation. Top of new coverboard to be flush with top of existing adjacent
Bldg. 15, 53A & 53B
ADDENDUM No.1 (WER) Page-2
Bldg. 15, 53A, 53B & Mech. Room Roof Replacement & Interior Renovations Addendum No. 1
ADDENDUM NO. 1 – (continued) substrate. Roof over replacement per description in Scope of Work. Provide a unit price per square foot for replacement.
c. Sheet A6.2, Roof Plan Building 53A & Building 15. Add a Boxed Note as follows:
REPLACEMENT OF METAL ROOF DECK. Where the existing metal roof deck is deteriorated and/or compromised, completely remove the deck from center of joist to center of joist. Provide a galvanized steel deck of matching thickness (assume 1 ½”, to be determined) and matching profile. Replacement deck to span from joist to joist, welded in place. Provide a unit price per square foot for replacement.
END OF ADDENDUM NO. 1
Bldg. 15, 53A & 53B
ADDENDUM No.1 (WER) Page-1
ADDENDUM No. 1
TO: DRAWINGS
FOR: FDA Jefferson Laboratories
Bldg. 53C & 53D Roof Replacement
NCTR
3900 NCTR Rd.
Jefferson, AR 72076
DATE: APRIL 6, 2021
This addendum forms a part of the Contract Documents and modifies or interprets the Project Manual and Drawings, as noted below. Acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to do so may subject bidder to disqualification.
1. ADDENDUM DRAWINGS:
a. Sheet A6.4 Roof Plan Building 53C & 53D. Add a Boxed Note as follows:
PATCHING AND REPAIR OF BLDG LIGHT WEIGHT CONCRETE ROOF DECK.
Repair and patch light weight concrete roof deck with Siplast Sonoplast or equal per manufacturer’s recommendations. Provide a unit price per square foot for repair and patching deck.”
b. Sheet A6.4 Roof Plan Building 53C & 53D. Add a Boxed Note as follows:
REPLACEMENT OF LIGHT WEIGHT CONCRETE ROOF DECK. Where the existing light weight concrete deck is deteriorated and/or compromised, completely remove the gypsum topping and light weight deck down to the existing support deck, from center of joist to center of joist. Rebar to remain. Provide a 1 ½” thick galvanized steel deck at the opening, spanning from joist to joist. Install rigid insulation over new steel deck with a ½” Densdeck or equal coverboard over the insulation. Top of new coverboard to be flush with top of existing adjacent
Bldg. 15, 53A & 53B
ADDENDUM No.1 (WER) Page-2
Bldg. 53C & 53D Roof Replacement Addendum No. 1
ADDENDUM NO. 1 – (continued) substrate. Roof over replacement per description in Scope of Work. Provide a unit price per square foot for replacement.
c. Sheet A6.4 Roof Plan Building 53C & 53D. Add a Boxed Note as follows:
REPLACEMENT OF METAL ROOF DECK. Where the existing metal roof deck is deteriorated and/or compromised, completely remove the deck from center of joist to center of joist. Provide a galvanized steel deck of matching thickness (assume 1 ½”, to be determined) and matching profile. Replacement deck to span from joist to joist, welded in place. Provide a unit price per square foot for replacement.
END OF ADDENDUM NO. 1
| Addendum#1 - Bldg 15, 53A, 53B Revised |
| Addendum#1 - Bldg 53C & 53D Revised |
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