RFI___2.docx

RFI #2 Dated 23 June 2017

1) Specification 10 22 39 requires two conflicting sound ratings for the operable partition between Rooms 111 and 114. (STC 40 is mentioned at 1.2.2.2 and STC 47 at 2.2.2.1.) Further, Detail “OP”, Sheet A-111 states the STC is to be 54. Please provide the required level of sound attenuation for the folding panel system.

Response: Operable Partition OP to have an STC rating of 45

2) Heading 1.2.2.2 specifies an NRC Rating of 0.65-0.75 for the panels which is accomplished by adding perforated steel faces to one side of the operable partition. However, this is option is not available with gypsum substrates and the holes in the panel faces diminish the sound rating to a maximum of STC 45. Is this acceptable, or is the intent to obtain a higher STC Rating, in which case the NRC requirement will have to be removed.

Response: Operable Partition OP to have an STC rating of 45

3) On Floor Plan A-101, General Notes #3 states: “See I-701 for Demountable Partition Dimensions.” In the drawing set for this project there is not drawing sheet I-701 included. Please issue this drawing.

Please disregard Notes 3 and 5 on drawing A-101. Demountable partitions are not included in the project.

4) We‘ve received the following from several security subcontractors in regards to the security system called for on this project:

The Security spec is very old, asking for very old technology. Should we bid what is current or on the old technology?

Bid to the specifications of the solicitation.