Bid 640 ACHS New HVAC Modernization (Re-Bid)

Bid Documents

The District intends to award to A&B Construction at the 12.16.2020 board meeting

Can a Subcontractor that “holds” a C-4, C-7, C-10, C-16, C-20, C-34, C-38, C-42, C-43 or C-46 license be listed for a trade that does not require work performed under one of these licenses if they are not prequalified?

Please reference Document 00 11 16 Notice to Bidders for clarification.

Exterior Glass types a. Please provide manufacture and composition of required exterior glass including overall thickness, glass types to be used, tint if any, and performance values. Article 088000 2.7A describes laminated glass only and to be used at “all new window locations”. The details on sheets A9.03 and 9.04 identify 1” Insulated glass. There are no performance values listed and Low E glazing is not listed. Please provide/clarify the exterior glass for this project. b. If laminated glass is to be used as part of exterior glazing 088000 2.7A1c calls for tinted laminated with a ¼” thick interlayer and the tint color is not listed. ¼” thick interlayer is not available. Common thickness is .030 and .060 interlayer thickness. Please clarify and provide tint color.

U Factor : 0.29; SHGC: 0.34; VT:0.46

DETAILS ON SHEET A9.03 AND A9.04 DEPICT IG UNIT. EXTERIOR GLASS ASSEMBLY SHALL BE:

PROVIDE EXTERIOR LITE 1/4″ LAMINATE: 1/8″GRAY – 0.030″CLEAR PVB – 1/8″CLEAR

PROVIDE 1/2″ AIR SPACE

PROVIDE INTERIOR LITE 1/4″ LAMINATE: 1/8″ PPG SOLARBAN 60 ON CLEAR LOW -E #5 – 0.030 CLEAR PVB – 1/8” CLEAR.

Waterproofing Requirements at window break metals sheet A9.03 and A9.04 1. Please advise if any waterproofing membranes or other materials are required behind the break metal wraps and sill flashings shown in the details sheet A9.03 and A9.04. 2. Please advise if the break metal intersections A9.03 and A9.04 will need any type of caulking beauty bead at the abutting joints or if they are to just butt each other no caulking. If yes please advise which intersections will require caulking. 3. Please advise if the break metal wraps Sheet A9.02 will need any type of fasteners for installation or if the break metal wraps are to be caulked/glued in place with no fasteners. 4. Window Anchor Spacing Sheet A9.03 and A9.04 Spec 085113 2.02 J A. What is the required anchor spacing for window anchors shown on details on sheets A9.03 and A9.04. B. 085113 2.02J calls for 18-8 or 410 installation screws. Please clarify manufacture and type of anchors to be used at new window locations and spacing of anchors.

  1. NO DISSIMLAR METALS OCCUR; PROVIDE CONTINUOUS SEALANT BED AT PERIMETERS & JOINTS
  2. REFER TO SHEET A9.03 GENERAL WINDOW NOTES #8, #9, #10.
  3. AT DETAIL 8/A9.03 BRAKE METAL, USE WOOD COUNTER SUNK FASTENERS
  4. PROVIDE ANCHORAGE AS FOLLOWS:
  5. AT CONCRETE: 1/4″TITEN HD, 2″MIN EMBEDMENT AT 12″O.C.
  6. AT WOOD: #10 STAINLESS STEEL SCREWS, 1.5″ EMBEDMENT AT 12″O.C.
  7. AT BRAKE METAL PROVIDE #6 STAINLESS STEEL SCREWS AT 18″O.C.

We were reviewing the bid information, as well as the Project Manual and have a question relative to commissioning. The Specs refer to 01 91 (general Cx spec section) which doesn’t appear in the project manual. Can you assist us with this information?

Architect response: Commissioning is not required for this project. Please have the bidders strike out the reference to the spec section.

Is the window substitution request provided on following pages acceptable for this project?

OUHSD is not accepting substitutions at this time.

Architectural drawings show removing, replacing, or moving fixtures in multiple restrooms, that entails significant demolition and patching of finished surfaces. In addition, this work is not shown on plumbing drawings, nor there is no clear direction whether to reuse fixtures or replace with title 24 compliant fixtures. Please clarify if this work is required? If so, provide clear scope on demo and patch back along with a fixture schedule with new fixtures to be used, so that this work is not overlooked at bid time.

PATCH AND REPAIR ALL AFFECTED FINISHES TO MATCH EXISTING FINISH WHERE FIXTURES AND ACCESSORIES ARE ADJUSTED, REMOVED, OR
REPOSITIONED. PROVIDE SUITABLE SUBSTRATE TO RECEIVE FINISH AS REQUIRED. EXISTING FINISH IS IDENTIFIED ON SPECIFIC BUILDING FINISH
SCHEDULES.
REFER TO ADDENDUM #1 NOTE ADDED TO SHEET T0.01.
IT IS THE INTENT OF THESE DRAWINGS THAT EXISTING PLUMBING FIXTURES BE SALVAGED, RE-USED, AND ADJUSTED TO CORRECT ACCESSIBLE
LOCATION. CONTRACTOR SHALL BE RESPONSIBLE FOR REWORKING PLUMBING CONNECTIONS (PROVIDING OFFSET DRAINS, ETC); MAKING CONNECTION TO EXISTING WASTE, WATER AND VENT PIPING; AND PROVIDING IN WALL BLOCKING AND/OR ADJUSTING CARRIERS.

The drinking fountains shown on the A-sheets there is nothing saying if they are new or existing? The letters “PF” in front of the drinking fountain are to mean? Are the Bi-Level drinking fountains that are ADA requirements?

PER SITE PLAN SHEET A1.01 ALL DRINKING FOUNTAINS ARE ” (E) DRINKING FOUNTAIN”
PER ELEVATIONS FOR EACH BUILDING, D.F. ARE SHOWN TO BE EXISTING HI-LO AND DIMENSIONS ARE NOTED TO BE EXISTING.

Regarding Site Visit Cert. if we didn’t attend the non-mandatory meeting, do we still need to include this form in our bid?

The form is not required if you did not attend.