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Re-Submittals Of The Following Items Are Required:
1. Plans are incomplete. "Bathrooms" are rooms or compartment containing a lavatory dedicated to personal hygiene, water closet, or bathing capability such as a shower or tub, or any combination of facilities thereof. In order to not combine the area of toilets and showers located in bathroom areas, they must be separated by a minimum 8" lintel, or combined area must be included in the square footage. If the combined areas exceed the limits allowed fire sprinkler protection coverage shall be extended into those areas. Plans shall address the construction and square/foot spacing of closets and bathrooms for clarification of meeting minimum installation code designs. Verify, clarify, revise and resubmit. (BMC 7-01-50-901.2, IFC 105.4.2, NFPA 13D 4.1.2)
2. Provide data submittal information for the 1" Wilkins 975XL backflow, showing the pressure loss graphs, velocity limits, installation instructions, etc., whether installing this device or not, since it affects the fire sprinkler system operation and must accompany the submittal package for design code verification. (BMC 7-01-50, IFC 901.2, IFC 105.4.2)
3. Plans and calculation information is lacking.
a. This underground is supplying a combination system (domestic and fire protection). Provide the size and location of (United Waters uses the Neptune T10 model) water meter. Include the correct pressure loss for the same in the calculations.
b. Provide length, pipe type and size from the main tap to the water meter on the plans and correlate that information in the calculations.
c. Provide length and clarified type of pipe from the meter to inside (under the house) on the plans and correlate it with the calcs by resubmittal.
d. A domestic and sprinkler (combination control) shall be connected upstream of the fire sprinkler take-off, (no exceptions) for monitoring of system per NFPA 13D-A.6.2(a), A.6.3(a) and included the valve in the calculations.
e. PVC cannot be exposed in a resident living space and will not be installed as shown by others (UPC/IPC). Clarify piping and transitions from underground under the floor up the domestic take off tee and include that corrected information on the plans and in the calcs.
f. Pipe friction loss shall be calculated in accordance with the Hazen-Williams formula with C values from NFPA 13-Table 14.4.4.5, which include pipe, fittings, and devices such as valves, meters, flow switches in pipes 2 in. or less in size, and strainers, and calculate elevation changes that affect the sprinkler discharge.
(IFC 901.2, IFC 105.4.2, NFPA 13-14.4.4.5[1])
4. It appears there is a 3'-0" (8'-0" total) elevation grade change (lift) from the street to inside the house (Node #3). This is not shown on the plans and would appear there is no terrain changes from the street to house? This is gleaned through interpreting the calculations only. Plans and calculations shall correlate. Provide plans that correlate with the calculations. (BMC 7-01-50, IFC 901.2, IFC 105.4.2, NFPA 13-14.4.4.5[1])
5. Plans are incomplete. Provide complete piping support and location requirements meeting the installation requirements any listing limitations as addressed in NFPA 13D-7.4 on the plans. (BMC 7-01-50, IFC 901.2, IFC 105.4.2)
Areas of concern:
6. Fixtures (lights) or fan locations interfere with correct sprinkler density distribution with residential sprinkler installations. Fire testing has indicated the need to wet walls in the area protected by residential sprinklers at a level closer to the ceiling than that accomplished by standard sprinkler distribution. Where beams, light fixtures, sloped ceilings, and other obstructions occur, additional residential sprinklers are necessary to achieve proper response and distribution. Guidance should be obtained from the manufacturer installation instructions. IFC Inspector will verify obstruction to head installation locations. (NFPA 13D-8.2.4*)
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