An 18-inch deep x 3-foot wide duct is located with the top of the duct 20 inches below the upright sprinkler deflector. The sprinkler is centered above the duct. NFPA 13 (2016 Edition) has the 3x rule (8.6.5.2.1.3) which only applies to structural members in light and ordinary occupancies, and the duct is not over 4-feet wide which would require sprinklers by 8.6.5.3.3. Is this arrangement acceptable by code?
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For a typical fire pump room, what is the required NEMA enclosure rating for a fire pump controller?
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. We're planning early stages of design for a new construction building, and the architect and owner are asking for a summary of benefits for the installation of fire sprinklers. This particular facility could use a NFPA 13 or NFPA 13R system and is under the 2015 IBC.
Aside from Allowable Building Area, Allowable Building Height, and Allowable Building Stories, what are other code benefits to providing sprinklers provide? Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. Why are pipe cut-outs (or coupons) required to be hung outside of pipe connections?
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. What is the difference between malleable and cast iron? Is there a preference between the two for use in sprinkler or clean agent system fittings?
Note: This is a Daily Discussion question submitted anonymously to us. Submit Your Own Question or Discuss This Here. We have never used a flowmeter with a bypass to conduct annual fire pump tests, but have been asked to explore the option in an effort to save water. Using a flowmeter and test bypass for a fire pump, would a test header still be required? For those in areas with strong water conservation, do you have any recommendations on things to look out for?
Note: This is a Daily Discussion question submitted anonymously to us. Submit Your Own Question or Discuss This Here. A healthcare system standard states to allow for Light Hazard sprinkler spacing, but require Ordinary Hazard hydraulic calculation and pipe sizing. Has anyone done this before?
Note: This is a Daily Discussion question submitted anonymously to us. Submit Your Question or Discuss This Here. Where does the requirement for a post-indicating valve originate? If I only have a sprinkler system, is a post-indicating valve required?
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. We have a project on a corporate campus that has a large and old (approximately 1940's) water main loop that serves multiple buildings' sprinkler systems. There has been a rupture within the past three years, and the owner is wondering what methods exist to test whether the pipes are leaking and how significant the leakage is. Any ideas?
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. A high rise building has pressures of 9 kg/cm^2 (128 psi) at its lowest floor. What does NFPA 13 require in regards to the high pressure or standard industry practice suggest to reduce pressure at the lowest levels? Should an orifice plate be used?
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. An existing, non-sprinklered 2,800 sqft single-story building is divided into (2) 1,400 sqft restaurants. The division between the restaurants is a 2-hour rated wall.
The owner would like to remove the dividing wall to create a single 2,800 sqft restaurant. Will the removal of this wall prompt a requirement for sprinklers to be installed in the building? This project is under the International Building Code. A project that contains a light hazard office space with a dry-pipe sprinkler system, and a 900 sqft area with sloped ceilings (about a 5/12 pitch). Per NFPA 13, the remote area should increase by 30% for the dry system (NFPA 13-2013 Section 11.2.3.2.5) and another 30% for the slope (NFPA 13-2013 Section 11.2.3.2.4). However, does the fact that only 900 sqft of the entire remote area is sloped impact the overall size of the remote area at all? Curious in other's opinions.
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. When can a fire sprinkler main simply run parallel to and directly underneath structure (such as an open-web joist), and when must is be located in-between joists and hung with trapeze hangers?
Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here. How do fire sprinkler systems address water hammer?
Note: This is a question submitted anonymously to us (you can submit any question here) as part of our new Daily Discussion series. Discuss your take on this question here. |
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