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Hi, We are discussing in office about traverse flue spaces in racks. Accorrding to NFPA 13 traverse flue spaces between loads and at rack uprights are required and shall be min. 6" In attachment you can see drawing with 3 option how we understand this description. What solution is corect...

Yes, I can. But in NFPA13 edition 2010 point 8.5.7.1 have wrote that only in skylights to 3,0m2 sprinklers would be ommited from skylight. What about this?

ok, but the smoke vents will acticate only manually. What about the sprinkler in 3,75m2 skylight?

I have a question about little skylights in warehouse area. In warehouse area are ESFR K200 sprinklers. Some of skylights them are equipped with smoke vent feature. The skylights are 3,75m2 area (1,5mx2,5m) and are slightly more than 3,0m2 from NFPA13 edition 2010 point 8.5.7.1. The distance...

Hi, I have installation with 120 ESFR sprinklers. Can I use a glicol medium with ESFR sprinklers according to NFPA13? Joanna

Thank you for your answers. In design I suggest DN40 fitting to trapezoid sheet using Sikla roof hanger (link in the first post). But person, who opinion this project says that according NFPA13 it is imposible to hang pipe >DN25 to trapezoid sheets showing point 9.2.1.4.1 "Branch line hangers...

so, what maximum dimension could I hang to metal deck (trapezoid sheets)?

Hi, Is it possible, according to NFPA13, fitting to metal deck roof? I have DN40 branch lines and I want to fit they to metal deck roof. The metal roof type: http://www.metaldeck.com/n24.html fittings...

Ad 1.Ad.2 It is steel construction, with trusses and beems. It is panel wall built of trapeze sheets and mineral wool Ad 3. We can expect -20degreece of Celsjusz Ad 4. Nothing will be stored beneath facade. Investor want this kind of fire protection system because facade wall has to small fire...

I need to ask You for Your opinion in following matter. We are finishing electronics factory building. We equipped this factory with sprinkler installation (intensity 7,5 mm/m2) connected with internal hydrants system. Now investor wants us to do drencher (dry, open) installation outside – to...

And this is construction steel sheet like this: and this: http://files.engineering.com/getfile.aspx?folder=3effc20d-09f7-489d-a153-bc95d0914dd1&file=123_0205

I'm talking about trapeze sheet like on picture 1http://files.engineering.com/getfile.aspx?folder=34d95dd6-40bc-418e-92a4-28c595e76e1a&file=T150_foto-d4960.jpg

Hi, I have a question about hanging to trapezoid sheet. We will do a sprinkler installation in Poland according NFPA. Can we hang sprinkler pipe DN65 to trapeze sheet? I will use trapeze ceiling fixing. Could you show me any record in NFPA13 which say about hanging to trapeze sheet/ceiling...

Thanks.

Hi, I have a project, where I have double-racks with solid shelves. The solid shelves are 40cm height. Area of single shelf is 1,10mx2,70m=2,97m2. The rack is built from 6 double shelves and is 16,75m long. And my question is: According to NFPA13:2007 16.1.6.1 the shelving area (64ft2 =...

FFP1, thanks a lot. It was answer for my question. I'm sorry that I've confused you but it is fault of my no good language level :( And what with skylights? If in my warehouse are skylights and distance from floor to the top of skylight is more than 13,7m cannot I use ESFR? I have problems...

we use pomps with curve according to NFPA rules, FM aprooved pumps only when we design with FM rules

Using the NFPA codes is in the most systems cheaper for investors. in PN-EN and Vds using 2 fire pomps are obligatory in most case of sprinkler systems. Addittionaly the NFPA rules have more design options. In new polish code (from 2005) there are no mention about ESFR or Large Drop sprinklers...

Sorry for my English :) I'm a sprinkler designer from Poland. We design sprinkler system according to NFPA13, FM rules, PN-EN code, VdS code. The most sprinkler systems in Poland is according to NFPA.A few years ago I asked for something on this Forum. It is a very interesting place in www-world