Questions 3.docx

Question number 19: Plan FP401 section 4 illustrates a Typical Pit Detail. In your response to RFI#13 dated 7/2/09 the pit locations were never identified? Please identify areas of installation.

Answer: The pit is for the Fire Main entrance into the building. The pit is to be located as indicated by Note 40 on drawing FP103.

Question number 20: Are there outlet piping of the pits to be connected to storm or sanity waste piping?

Answer: The piping in the pit is the 10” Fire Main.

Question number 21: The detail on FP-401 section 4 illustrates a pipe entering the pit. Is this a drain and wash down line for the foam system? If so what size?

Answer: The piping in the pit is the 10” Fire Main.

Question number 22: Please identify areas of waste piping connections.

Answer: A single 4” waste pipe connections shall be made to the existing sanitary system as indicated in M101.

Question number 23: What size are these pits –scale or size not provided.

Answer: As indicated in detail 4 on drawing FP401, the Fire Main Entrance Pit shall be tentatively sized to be 3’-0” x 3’-0” x 5’-0” deep. All dimensions shall be coordinated with existing conditions, see detail note.

Question number 24: For testing purposes only- What height is going to be required for the foam testing of the Pods?

Answer: The minimum requirements for foam testing are specified in specification 13960. Typically heights range between 6 to 8 ft.

Question 25: In place of sand bags can we use knockdown walls (such as concrete foams) for the Foam testing?

Answer: As stated in specification 13960, “Contractor shall provide protection for the facility, including walls, doors, openings, electrical and mechanical equipment exposed to possible damage during discharge tests. This shall include provision of plastic sheeting, sandbags or similar means for preventing migration of foam solution into adjacent areas.” It is the up to the Contractor’s discretion to determine the adequacy of similar means of protection. Warning - Foam discharge will move quickly, in a similar manner to water. Discharge area shall be fully sealed to prevent leakage.