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  1. sprinkler1000

    Sidewall sprinkler in vertical change in ceiling

    NFPA 13 permits the installation of sidewall sprinkler in a vertical change in ceiling? 8.7.4.1.4.1 "Where soffits exceed more than 8 in in width or projection from the wall, pendent sprinklers shall be installed under the soffit" can be interpreted as allowing this configuration if pendent...
  2. sprinkler1000

    Sprinkler ordinary temperature selection criteria

    Thanks both for the help. Good point Travis. I checked that with the Victaulic sidewall EC and it appears only listed by UL for 135ºF.
  3. sprinkler1000

    Sprinkler ordinary temperature selection criteria

    What would be the choice criteria between the two temperature ratings that manufacturers have for ordinary temperature (135 or 155 ºF)? Ambient temperatures are normal. Datasheet also specifies the same máximum ambient temperature for both (100ºF). thanks
  4. sprinkler1000

    Obstruction to sprinkler discharge for in-rack sprinkler

    Thanks Matt. regards JM
  5. sprinkler1000

    Obstruction to sprinkler discharge for in-rack sprinkler

    Dear sirs Does anybody knows if table 8.6.5.1.2 from NFPA 13 Ed 2016 applies to in-rack sprinklers? Ítem 8.13.5 Obstruction to in-rack discharge says: "In-rack sprinklers shall not be required to meet the obstruction criteria and clearance from storage requirements of Section 8.5". No...
  6. sprinkler1000

    Number of Exits from a office area

    Based on what I read from the IBC and NFPA 101 is permitted to have only one exit if occupancy is below 50 people and the common path limits (75ft or 100 ft if sprinklered) are not exceded.
  7. sprinkler1000

    K5.6 sprinkler for storage

    Thanks skdesigner, for the confirmation regards
  8. sprinkler1000

    K5.6 sprinkler for storage

    Dear Fórum: Sprinkler with K5.6 are permitted for protecting storage if the criteria is density/área (OH-2 in my case), even thou they are not specifically listed for protecting storage. I am correct? thanks
  9. sprinkler1000

    NFPA 14 and grooved joints

    skdesigner: Thanks for the information. NFPA 14 requires protection of piping in enclosing with same fire rating as stairway enclosure.
  10. sprinkler1000

    NFPA 14 and grooved joints

    We could not find any reference to grooved joints in piping in NFPA 14. ¿Are they allowed as a piping joining method in non sprinkler protected spaces?
  11. sprinkler1000

    VRV

    Herr What I mean is that if your latent load is higher than the usual you may not find an indoor unit that handles it. The VRV indoor units are more off the shelf than fancoils. You can specify fancoil air flow, number of rows, etc, for some applications.
  12. sprinkler1000

    VRV

    HerrKaLeun: you are correct. I was making reference to some features that make these systems good in terms of efficiency (part load operation with variable flow for example). Regarding humidity, you can not control how much latent or sensible load the system is going to handle, as you can do...
  13. sprinkler1000

    VRV

    Low air flow rates of the indoor units, no possibility to control humidity, propietary systems, are the main limitations of these systems compared to chilled wáter. Máximum size of indoor unit is in the 100.000 btu/hr aproximate. They are a good choice thou, when you need to centralize many...
  14. sprinkler1000

    Primary-Secondary chilled water system

    Timothi: The variable that controls the two-way valve is room air temperature. Room thermostat then calls for open valve or close valve, to let water enter the coil.
  15. sprinkler1000

    Air Changes per Hour vs. Fresh Air Volume

    You have to check what are the code requirements. ASHRAE clearly states "Air changes per hour of outdoor air" which is different from "Air changes per hour supplied to room". The latter refers to air movement.
  16. sprinkler1000

    Roof height for sprinkler K5.6

    Sdpaddler. Bingo: in tables 3 to 5 in DS 0200 there are the spacing rules for sprinklers, depending on the hazard category. There is no 5.6K sprinkler for roofs over 30 ft. Also in DS 3-26 the demands are related to ceiling height (table 2) Thanks for your help.
  17. sprinkler1000

    Roof height for sprinkler K5.6

    thanks Sdpaddler, I will check FM. Maybe OHII is not adecuate.
  18. sprinkler1000

    Roof height for sprinkler K5.6

    Stookey: By GE GAP you mean Global Asset Protection? Are they fire protection related?. The two organizations that we follow are NFPA and FM. At least in NFPA 13 there is no explicit reference to the occupancy. Here the AHJ has no requirements for sprinklers, but there are some expceptions in...
  19. sprinkler1000

    Roof height for sprinkler K5.6

    Thanks both for replying. I will look deep in FM datasheets. I think your approach is sound. stookeyfpe: we are the designers, there is no engineer of record. We think that going beyond OHII may be overkill. Maybe we should clarify what kind of exhibitions are not protected.
  20. sprinkler1000

    Roof height for sprinkler K5.6

    Sirs: I understand that there is no limit for roof height (deflector height) in NFPA 13 for sprinklers with 5.6K. Beyond that, is it good practice to design with 5.6 K at 60 ft, or they should be with a higher discharge coefficient? I have read discussions on this issue about vaporizing of...

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