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Plan Review Comments, 7 World Trade Center, 1998

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Letter providing comments on submitted architectural plans for the Mayor's Office of Emergency Management.

NYC-WTC_000173475–000173482

Folder label: “7 World Trade Center Mayors Office of Emergency Management Plan Review

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NYC 9/11 Public Portal Document

2. Provide a sequence of operation for elevator #31, as it related to the base building ATS, and its present operation during emergency conditions. The settings (timing) on the base building ATS and the new AI S must be coordinated, if the new generators fail, will the load transfer back to the life safety generator?

3. Tap to the existing bus for the new 2000 amp switch shall be reviewed and approved by the Landlord, provided a single tap is feasible based on the spare capacity available among the existing main switchboards. (Two taps may be required instead of one).

4. Landlord should review risers passing through common space.

I. Dwgs. E4.01. E4.02: No comments

J. Dwg. E4.03 Indicate on plan where the heat tracing detail applies.

K. Dwgs. E6.01, E6.02: Schedule shows only condenser pump reporting to BMS?

III. Fire Protection

A. Dwg. FP'l .01: No comments

B. Dwg. FP2.07:

1. No sprinkler heads are provided in the new emergency generator room. We are not sure if this is permitted under the Code. We recommend sprinklers to be provided with high temperature heads and piping be heat traced.

2. Please insure that sufficient floor drains are provided in the event that any water leaks.

C. Dwg. FP3.23: Piping for heads over area columns 49,50 and 51 are not shown. Please provide.______________________________________

D. Dwg. FP4.23: The shutting down of the computer equipment is optional, via the pre-action system. Verify with the owner if this is required.

E. Dwg. FP5.23: No comments.

F. Dwg. FP6.23: Area of work should be 23"^ floor.

NYC-WTC_000173480

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NYC-WTC_000173480Source: NYC Law Department, mirrored locally

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