This small change in a facility, which was thought to be a minor change in occupancy, will require a greater water supply for the protection of the commodity being stored. Problems occur when a building designed to office space and warehouse and then changed to a high pile storage facility. Many times a sprinkler contractor will have a fire protection engineer design the system and provide the drawings to the contractor for submittal to the fire department for review.Ĭommercial fire sprinklers are designed to the specific use of the building.
Fire sprinkler design and calculations must be performed by a licensed C16 contractor only with no exceptions. Commercial fire sprinkler systems have many complicated and very specific guidelines to follow. Be sure your contractor accounts for this device in his sprinkler calculations.Ĭommercial fire sprinkler systems are designed to Nstandards. This device reduces the available water flow and pressure. If you have a water meter there may be a double check valve on your system. It is the sprinkler contractor’s responsibility to call for timely inspections and have a representative present at the time of inspection, unless otherwise arranged by the sprinkler contractor and the fire inspector. The contractor is also required to provide a cabinet containing spare sprinkler heads and approved wrench to remove or install a sprinkler head, all required signs and labels, instructions how to test the system monthly, and a set of plans for future reference. It may require a larger and more costly pump to ensure sufficient water flow. Look for a note/s on the plans stating something similar to the “underground/ pump by others or owner” If you are not sure, contact the contractor for an explanation prior to installation.īe aware that smaller pipe sizes (3/4 inch vs. Underground plumbing, tanks, and pumps may be shown on the plans for reference only. The fire sprinkler contractor will not do the electrical wiring necessary to power the flow switch or alarm devices.
The sprinkler contractor may, but usually will not install the water supply (meter or tank), the required pump, or underground water line from the source to the base of the riser. This riser is the connection between the underground water supply and the overhead sprinkler plumbing in the building. The fire sprinkler contractor normally installs the overhead plumbing and sprinkler heads as well as a sprinkler riser consisting of the main shut off valve, domestic connection if required, check valve, water flow switch, combination drain and test valve and pressure gauge.
Owner builder is allowed to submit sprinkler drawings for the sprinkler contractor. Normally the fire sprinkler contractor submits the required plans and obtains a building permit. The fire sprinkler contractor is to be a licensed C16 contractor.
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