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  1. Dormer1975

    NFPA 170 & 3 Dimensional Drawing

    I'm hoping someone has run into this issue and can provide some guidance on how to proceed. A brand new fire marshal that has taken over a major county in which we work is steadfastly enforcing NFPA 170 - Standard for Fire Safety and Emergency Symbols. Specifically, Chapter 7 that addresses...
  2. Dormer1975

    Catch Basin Caustic Material Containment Valve

    Stookeyfype, this project is in the United States. It is designed under the 2015 IFC and as the 2013 Edition of NFPA 400 is the recognized Reference Standard in Chapter 80 of the IFC, it also applies. I'm curious to hear your elaboration.
  3. Dormer1975

    Catch Basin Caustic Material Containment Valve

    The situation I'm dealing with is a unique one. I'm not sure it's specifically my responsibility to address this issue, but I'm involved. It's in a remote location. I'm hoping someone reading this has had some experience with this. We are installing a fire sprinkler system in a warehouse...
  4. Dormer1975

    Fire Pump Sizing from Fireflow

    My belief is that their request of 4,000 gpm @ 20 psi (my example) is more along the lines of a steadily held water network like a municipality provides. A city or county has multiple pumps throughout their jurisdiction(s) that maintain specific static pressures based on usage (people taking...
  5. Dormer1975

    Fire Pump Sizing from Fireflow

    As we all know, fire departments/jurisdictions use a specific gallonage requirement (i.e. 4,000gpm in my example) @ 20 psi as their requisite fire flow. How do I size a fire pump @ 20 psi? In my experience, pump curves don't go that low. I don't do a lot of pumps, maybe 1-2 a year, but most...
  6. Dormer1975

    FM Global Design Criteria and local AHJs

    We design many automatic fire sprinkler systems under the design criterias of FM Global in our area. Mostly, storage applications. Recently, our local AHJ has raised concerns about accepting FM Global Design Criteria from a legal standpoint. NFPA 13 is an accepted standard by the...
  7. Dormer1975

    IBC 2009 Section 713 Penetrations (713.4.2 Nonfire-resistance-rated assemblies)

    I have a building (cold storage facility)that I'm providing fire protection to that is constructed of 38" deep Red L web trusses. Plywood is attached to the bottom of those trusses. This creates a combustible concealed space 38" deep. 12" of R38 insulation rests on the plywood. I am installing a...
  8. Dormer1975

    Section 713 Penetrations (713.4.2 Nonfire-resistance-rated assemblies)

    I have a building (cold storage facility)that I'm providing fire protection to that is constructed of 38" deep Red L web trusses. Plywood is attached to the bottom of those trusses. This creates a combustible concealed space 38" deep. 12" of R38 insulation rests on the plywood. I am...
  9. Dormer1975

    Sprinkler Head K-Factor Selection

    I'm trying to develop a cookie cutter criteria for dictating when to change the sprinkler head k-factor. Maybe, it's not possible to have a fixed plan for this, but I thought I'd throw this out to the community to see what you think. I'm designing a system that is Ordinary Hazard Group II...
  10. Dormer1975

    Handheld Laser Measuring Device

    Excellent suggestions. Thank you. I'm checking out Hilti's website and looking at the PD 40. I think that's the next sibling in the PD line to your PD 30 TravisMack. http://www.us.hilti.com/holus/modules/prcat/prca_navigation.jsp?OID=-20276
  11. Dormer1975

    Handheld Laser Measuring Device

    For survey work, we've been using a Spectra Precision Handheld Laser Model HD 150 and it just died. Doing some research for a new handheld laser measuring device and curious what people these days use out there. I know Leica is a good brand, but not looking to spend thousands of dollars...
  12. Dormer1975

    NFPA 13R Bathrooms

    I wanted to share a recent experience I had and get commentary. In the past few months I worked on an NFPA 13R project for a 7-building 3-story each apartment complex. Each unit had a bathroom that was less than 55 ft^2, and thus, according to the 2007 edition of NFPA 13R, not required to be...
  13. Dormer1975

    NFPA 13R Bathrooms

    Sorry wrong forum.
  14. Dormer1975

    NFPA 13R Bathrooms

    I wanted to share a recent experience I had and get commentary. In the past few months I worked on an NFPA 13R project for a 7-building 3-story each apartment complex. Each unit had a bathroom that was less than 55 ft^2, and thus, according to the 2007 edition of NFPA 13R, not required to be...
  15. Dormer1975

    Paperspace question

    Thanks Chicopee. Yes, I always open the original drawing and "bind" any existing xrefs to that drawing, then clean it up the way I want it to look before I plot to .dwf, then xref it into my drawing. Could you further explain the "nesting" of multiple xrefs into a drawing? Do you mean, don't...
  16. Dormer1975

    Paperspace question

    I never did figure out what caused the glitchy problem. In the end, I just xref'd the cleaned architect's drawing into my own drawing and I didn't have the problem. My conclusion is that it was something hidden in the architects drawing. Nowadays, when I encounter problems of this sort, I...
  17. Dormer1975

    Paperspace question

    I'm using AutoCAD 2008 and I'm having a problem when using paperspace. I have a drawing that has been very jumpy. By jumpy I mean, in model space when I zoom in and out, it jumps. It's hard to explain. But, when trying to select grips or snap points, it's difficult to maneuver the mouse...
  18. Dormer1975

    Seismic Bracing

    Thank you much for the responses. Actually, I did see the reference to ASCE 7. I'll have to obtain a copy of it to further educate myself. I wasn't sure if all my answers could be found in the IBC. I'd be interested to hear from other fire sprinkler contractors on their practices regarding...
  19. Dormer1975

    Seismic Bracing

    Ok, I wanted to get a thread going on this topic. This thread is about 2 things: 1)Determination of whether you have to seismically brace and 2)Seismic bracing in 13R systems. I have done a decent amount of research on this subject but please correct me if I'm wrong on any of this. The owner...
  20. Dormer1975

    Hops Warehouse Line Hanging

    I'm currently working on a hops warehouse (0.30 gpm/ft^2 and 2600 ft^2) and actually will be doing 3 more in the next few months. My question involves the hanging method for the line piping. The current hops warehouse is existing construction and has insulation panels (celotox or other brand)...

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