HMSG Building Envelope Repairs RFI 172-181.pdf

No. Question Response

38.1.3 of specification section 010000 calls for the overhead protection to have the “ability to withstand 25,000 pounds of force from overhead”. What is the area of distribution (impact) that should be figured in this calculation?

The third sentence of 38.1.3. Overhead Protection to be revised: "Overhead protection shall be construction of steel and pressure-impregnanted fire-retardant treated wood with the ability to protect public and staff from the impact load of standard tools for the proposed work." For the distribution of the impact loading the load will need to be transferred to the plaza major girders. The plaza structure is a combination of multiple different slab and framing systems so it is important that only major girders are used and not joists or minor beams.

38.1.3 of specification section 010000 calls for the overhead protection to have the “ability to withstand 25,000 pounds of force from overhead”. Does this requirement apply to ALL areas of overhead protection, or can this requirement be waived for locations where there is no risk of precast panels being hoisted overhead?

The third sentence of 38.1.3. Overhead Protection to be revised: "Overhead protection shall be construction of steel and pressure-impregnanted fire-retardant treated wood with the ability to protect public and staff from the impact load of standard tools for the proposed work."

The answer to Question #36 within Addendum No. 2 stated that the “museum is open to the public daily between 10:00 AM and

5:30 PM”. If we are planning on normal hours of construction being 6:00 AM to 3:00 PM would that mean we have to cover costs in our proposal for a Smithsonian security guard for 4 hours every day (from 6AM to 10AM)?

Normal work hours are 6:00 AM to 3:00 PM.

Are the existing stone pavers on the plaza set in a solid bed or mortar/grout, or are they be set on pedestals?

The existing granite pavers are set in a reinforced cement setting bed with mortared joints.

Within Amendment #2 there are 2 attachments that are not able to be downloaded. These are the ‘Construction

Qualifications Statement’ dated 8/27/2020 and ‘Availability of

Funding_BID SHEET’ dated 8/27/2020. Please provide.

In the answers to the questions posted to date, Question 16 states: “Given the complexity of the Hirshhorn Museum

Envelope Repair project and the extensive information requested, please consider increasing the maximum page limit to 100 pages.” The response was “Attached consideration given”.The meaning of the response is unclear. Please confirm whether this is consent to increase the maximum page limit to

100 pages.

SI will not consider increasing the page limit. See the response to questions #8-12, 15, 59, 105, and 144 for exclusions to the page count.

The plaster finish (VP-01) called out on sheet E1-A-103 indicates that the BOD product and manufacturer are TBD. Please indicate what we should assume for our bid.

See Specification Section 092249 and 092523.

092523 2.2. A. Acceptable Manufacturers and Products:

1. Basis of Design: Master of Plaster Finishing System: Plaster finish coat (VP-01)

“Venetian” Plaster by Master of Plaster Finishing Systems, Inc (Columbia, SC; 803-403-

5252)

2. No Substitutions

Please provide the HMSG Building Envelope Study (2017) for reference as indicated in RFI response #146.

Photos from the HMSG Building Envelope Study (2017) are posted as "HMSG Building

Testing Reort Appendix D Photos"

Please provide a response to RFI #168. The response provided in

Addendum 3 is not related to the question asked.

Note #4 on E1 S-000 is for the accuracy of the total station and not the panel installation tolerance. Specification 034500.3.3.A,B,C controls for installation tolerance.

Addendum 2 RFI responses 54 and 65 for the Hirshhorn Museum and Sculpture Garden RFP refer to an electronic BIM release form. Can you please make this available to contractors so we can request a copy of the Revit/BIM model?

For security reasons that is for the awarded bidder

1821115 - HMSG Design for Building Envelope Repairs RFI Response 9/4/2020 Questions 172 - 181

If you have problems downloading from the attachments the documents are also available for download on DropBox