Page 3 of 4 INSP-75 - Rev. 3/2015
TOWN OF HUDSON
FIRE DEPARTMENT - INSPECTIONAL SERVICES DIVISION
12 School Street · Hudson, New Hampshire 03051 · Tel: 603-886-6005 · Fax: 603-594-1142
FIRE SPRINKLER SYSTEMS
Plan Submittal and Inspection Requirements
All fire sprinkler systems in the Town of Hudson, NH shall be installed to the currently adopted
edition of the NFPA-13, NFPA-13D or NFPA-13R.
Submittal Requirements
All fire sprinkler system submittals shall include:
1. Two sets of plans (signed and dated) that comply with the design and plan
requirements of NFPA-13, 13R or 13D currently adopted editions. Please include
the name of the owner or builder and the site address of the building location that
the calculations are designed for.
2. Two sets of hydraulic calculations (signed and dated) that comply with the
hydraulic calculation requirements of the appropriate standard. Please include the
name of the owner or builder and the site address of the building location that the
calculations are designed for.
3. Two sets of manufacturer’s material information sheets for the sprinkler heads,
piping, horn and strobe devices where applicable, flow switch, hangers and any
valves or backflow preventers used.
4. A sprinkler system permit application shall be signed, dated and submitted with
the plans.
5. If installing CPVC or pex, please provide a copy of your training certification
from the manufacturer showing that you have been trained for installing
these materials.
Design/Plan Submittal Requirements Checklist
1. A complete set of piping plans drawn to scale showing all sprinkler head locations
(use walls as dimensional references) and room use descriptions.
2. Indicate the type of piping being used in all areas, system piping and riser piping.
3. Provide all pipe sizing and lengths in all areas, system and riser piping.
4. Show all pipe hanger locations and provide hanger details showing all components
and attachment devices.
5. Note any sloped or special ceilings.
6. Note any exposed beams, light fixtures or other ceiling obstructions.
7. Show attic access door.
8. Specify the manufacturer of the sprinkler head, orifice size and temperature rating.
Use residential sprinkler heads in habitable spaces.
9. Provide a system riser detail showing all valves, devices and pumps. All shut off
valves shall be either locked in the open position or removed and stored close to the
system.
Hydraulic Calculations Requirements Checklist
1. Outline the calculation areas on the plans.
2. Calculations are required for the two most hydraulically demanding heads within a
compartment.
3. Indicate all hydraulic reference points on the plans.
4. Provide water flow data and the source of information on the plan.