36C24219B0024-0001001.pdf

561-18-111 Replace roofing in building 1 at the VA East Orange Campus

Solicitation# 36C24219B0024

RFIs

1) Please provide a scaled drawing for all the roof areas.

A) Attach is an drawing in sq ft

2) For loading the roof materials will a boom lift delivery be allowed during Monday to Friday or will it be on weekends only? Also, please specify the time/hours of boom lift delivery.

A) Delivery to front of building. Mon thru Friday after 6pm. Saturday or Sunday anytime.

3) Please advise the dumpster location, will it be loading dock or right below the roof areas?

A) Yes

4) Please advise if roof replacement is required below the HVAC units? If so how do we perform the work. Will agency remove and reinstall these HVAC units?

A) Yes, the roofing needs to be replaced under all HVAC Unit. It will be the responsibility of the contractor to lift unit AHU #17 on roof number 36, all others will stay in place.

5) Please advise what are the work hours for this project.

A) 6am to 2:30pm or 7am to 3:30pm

6) SECTION 01 32 16.13 and SECTION 01 32 16.15 states Contractor shall engage an independent CPM consultant, please advise this is required.

A) N/A- not required

7) SECTION 01 45 29 states Testing Laboratory retained and paid for by Contractor. Please advice what material tests are required for this project.

A) Abatement tested

8) There are various spec sections (division 4) for masonry work, mortar, grouting, tuck pointing, unit masonry, cast stone masonry, etc. We did not find all this masonry and masonry related work on drawings. If there is any masonry work, then please issue detailed scaled drawings for all the masonry work.

A) Minor masonry repair have been identified on the roof plan (Drawing)

9) What is the desired R value of insulation required for this roofing system.

A) Due to low through-wall counterflashing conditions, all roofs except #36 will receive 2” isocyanurate, coverboard and insulation crickets/saddles between the drains. Roof #36 requires 1.5” base layer, 1/8” tapered insulation and coverboard. All drains to be sumped 4’ x 4’.

10) Please advice how many sheet membrane ply’s are required for this roofing system. Specs and solicitation conflicts.

A) The roofing membrane consists of two ply sheets and one cap sheet for a total of three plies. There is also a one-ply base sheet installed directly to the concrete deck, to act as a base sheet/temporary roof.

11) SECTION 07 71 00 ROOF SPECIALTIES states ROOF HATCH, LOW SILHOUETTE GRAVITY VENTILATORS, EQUIPMENT SUPPORTS and METAL GRATING ROOF WALKWAY SYSTEM. Please identify on drawings the location/count of all these roof specialties.

A) Utilize membrane manufacturer’s recommended rooftop protection at bottom of fixed ladder (roof #39), outside of roof hatch (roof #38) and at roof entrance at corner of roof #36.

12) SECTION 07 92 01 is for WATERPROOFING & RESTORING OLD BRICK WALLS. Please identify on scaled drawings the locations and limits of this work.

A) On roof #60- corner wall area masonry repair. (see the drawings)

13) SECTION 22 14 00 is for FACILITY STORM DRAINAGE, it indicates work for STORM WATER DRAIN PIPING, CLEANOUTS, ROOF DRAINS AND CONNECTIONS. Please identify on scaled drawings the locations and limits of this work.

A) Clean out roof drains as per the drawings.

14) Please confirm there is only one lumpsum bid price to be written on para 17 of SF1442. There are no alternates, unit prices required for this bid.

A) No alternate

15) For access under the chiller, will the chiller be removed by the government for the roof work to be completed, or is this the contractors responsibly?

A) Contractor Responsibility

16) Will TREMCO be the roofing material that will be used exclusively for the project or will the government accept another manufacture equal product? - A) Please refer to the TREMCO OR EQUAL EQUIPMENT MAKE, MODEL AND SALIENT

CHARACTERISTICS

17) Will crane access be granted to the front of the building, if not what will be the course of action to obtain roof access?

A) Crane will be allowed before 7am or after 7pm between Monday thru Friday or anytime on Saturday thru Sunday.

18) Are we required to remove the fencing that is on the rear chiller roof to do required work?

A) The fencing that is on the rear chiller roof (photo attached) will need to be removed so the contactor can install new base flashings and a metal coping over the coping stone. I suggest a non-penetrating assembly like the one attached.