2022-0614_140P2022R0049_-_Contractor_Question_Set_4_0003.pdf

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Attached to
BOST 254798 - Restore Dorchester Heights Monument
Solicitation number
140P2023R0023
Issued by

About this file

This document contains questions and answers regarding a solicitation to restore the Dorchester Heights Monument and hardscapes. The solicitation is issued by the National Park Service seeking restoration of the monument, including cleaning and recoating the spiral steel staircase, replacing doors and frames, and assuming all painted surfaces contain lead or heavy metals. It clarifies that abrasive blasting will not be allowed on lead-containing paints. Details will be provided for items such as a gilded weathervane finish, baseplate connection, and beam pocket installation. The response also confirms there are no new site furnishings or perimeter fencing required beyond restoration, and clarifies irrigation and stair details. Adjustment of the proposal due date to two weeks after receipt of all technical responses is requested.

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Text version

140P2022R0049 6/28/2022

Q&A

Discipline Sheet Detail Spec Description Answer

1 Contracting 01 22 00 Specification Section 01 22 00 includes a schedule of unit prices. There are no provisions in the Contract Price Schedule to include unit prices for these items.

Please clarify the intent of this Specification.

2 Architectural A2.2 1 On Drawing A2.2 it calls out to "Replace Existing Aluminum Doors", there is a door hardware specification, but no Door and Frame specification. Please provide a Metal Door and Frame specification.

SmithGroup Response: Specifiication section 08 11 13, "Monument Hollow Metal Doors and Frames" has been included.

3 Architectural HD1.0-HD1.1 On Drawings HD1.0-HD1.1 under the "HAZMAT SHEET NOTES"."LEAD AND OTHER HEAVY METALS", Note 3 calls to "assume all paint to have heavy metals" Please confirm all painted surfaces should be assumed and treated similar to hazardous lead.

SmithGroup Response: Yes, it is assumed that all painted surfaces may contain lead.

4 Architectural A2.1-A2.2 Drawings require sandblasting the square and spiral stairs; the specifications tell us to assume all painted surfaces contain lead which per the specifications would prohibit sandblasting. Please clarify approach and scope of work.

SmithGroup Response: Correct, per Specification Section 02 83 13, "MONUMENT LEAD IN CONSTRUCTION", abrasive/ sand blasting is prohibited on lead containing paints. Paint removal methods should comply with all State and Federal regulations for the safe removal of hazardous materials.

5 Architectural A4.1-A4.4 On the elevation Drawings A4.1-A4.4, it calls out for the Weathervane to be "Repainted and Re-Gild". Please provide a specification for the gilded weathervane.

BCA Response: Specifiication section 09 90 00, "Monument Specialty Finishes - Gilding" has been included.

6 Architectural A2.1 On Drawing A2.1, it calls out to replace base plate at one (1) of the four (4) bearing posts. Please provide a detail for the baseplate.

SmithGroup & Silman Response: This will be provided in the structural details. See S2.1 in Addendum C.

7 Structural S2.1 Beam Pocket Details - for the level 1 slab base bid work, confirm intent is to extend existing beam pocket and place new beam in-line with and directly below existing beams

Silman Response: Confirmed.

8 Architectural AD3.1 AD3.1, says to remove all structural steel, brick, and level 1 concrete floor slab. Please confirm the existing concrete slab remains on the 1st floor in the Base Bid and is only removed/replaced in the bid option.

Confirmed

9 Architectural AD3.1 AD3.1, calls out to remove Brick Arches. Please confirm that Brick Arches at the crawl space ceiling are to remain in base bid.

Confirmed

10 Structural A6.2 A6.2, shows base bid and option K. Please provide details for the beam pocket and any connection to the existing beam to show how the new steel beams will be placed under the existing steel beams in the crawl space celling.

SmithGroup & Silman Response: Beam pocket detail is on S5.1. Install new beam directly beneath existing beam.

11 Structural S2.1 Please provide a detail showing how the C8x11.5 is to connect to the W10x26 existing steel and new steel.

Silman Response: See new typical detail on S5.2.

12 Site 32 30 00 DIV 32 30 00 site furnishings notes new benches. The landscape drawings only show rehab and reinstallation of existing benches. Please confirm there are no new benches

Site Furnishings does not mention new benches. No new benches are required.

13 Site L7-L12 Please confirm that the only steel picket perimeter fence to be removed/restored is at the entrances

EYP

14 Architectural 05 03 71/1.2 (A) 5 In the 05 03 71 Specification, it says in 1.2 (A) note 5 "Flag pole- Cleaned within 1-feet of the ground and hand hole mechanism restored". Please provide more detail on what is being required by this specification.

EYP

15 Structural 05 51 16 Specification Section 05 51 16, paragraph 2.6 discusses new stairs. As there are no new stairs required, please confirm this paragraph does not apply to the project.

SmithGroup Response: This portion should be retained. Per Addendum A, an additional tread needs to be added to the historic steel spiral stair to mitigate increased elevation of the concrete curb at Level 3 around the stair enclosure.

16 Contracting Solicitation Factor 3 Page 49 of 57 Does the requirement in Section H for Key Trades "Waterproofing" refer to the roofing, masonry, or retaining wall scope of work, all require types of waterproofing.

17 Civil L29, S5.0 Detail 4 Detail 4 on L29, showing the stair profile option with granite refers back to the structural details on S5.0. Details on S5.0 only show base bid CIP stairs. Please provide structural stair details for the granite stair option. Landscape drawings appear to show different stair elevations for the granite-topped stairs not shown on structural details

It is not a option

18 Civil L29 Detail 4 Please confirm "x" dimension for granite stair tread option shown on L29 Not an Option 19 Civil Please clarify scope of irrigation by defining the extents of any new areas to be irrigated?

See Sprinkler drawings

20 Structural S2.1 Drawing S2.1 Detail 2 & 2A, shows beam pockets BP2. This call out appear to be on the wrong face of the building. Please confirm if these beam pockets are for the C8 x

11.5 beams and the drawing should be revised.

Silman Response: Graphics have been corrected on S2.1 in Addendum C.

21 General In order to allow the bidders sufficient time to incorporate the remaining outstanding technical Q&A responses and to account for the upcoming holiday, please adjust the proposal due date to correspond to two weeks after receipt of all technical responses.

22 Structural A2.2 & A3.2 On Drawing A2.2 it calls to clean and recoat the Spiral Steel Staircase and its in Option F. On Drawing A3.2 it calls for a New Steel Enclosure around Spiral Steel Staircase. Please Confirm if the New Steel Enclosure is in Base Bid or Option F.

OPTION F

Questions

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