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  1. DennisR4

    Titan sub noise heard on board support ship.

    I am surprised more people haven't caught that yet.
  2. DennisR4

    Titan sub noise heard on board support ship.

    Saw the one on HBO Max, and the Netflix one. They were both pretty good, although they were vastly different. The Netflix one was spine tingling, showing footage from inside the sub on test dives, and you can audibly hear the carbon fiber cracking and popping. SR was an idiot, but he had balls...
  3. DennisR4

    Importing PDF to DWG

    Previously, when I would insert a PDF in AutoCAD, I would get a nice clean conversion, with everything editable: All the lines were clean and sharp. Recently when I try to Import a PDF it converts like this: And the lines are not sharp: We did switch from Adobe to Nitro a while back...
  4. DennisR4

    Fire rover

    I have not, but now I want one!!!
  5. DennisR4

    Gut Riser - NFPA 13R

    I have heard a few old timers refer to Riser Checks a "straight gut" valves. But I am in the Pittsburgh area. None of us speak the Kings English [wink]
  6. DennisR4

    Window Protection for Fire escape in Residential Building

    I agree with the above 100%. This is not the way I would do it. Although, as I stated above, I have seen it required in Pittsburgh a couple times. One attachment shows them being used for a window near a property line (buildings were only a foot or two apart). The other attachment shows...
  7. DennisR4

    Window Protection for Fire escape in Residential Building

    @cdafd I have seen this required in the Pittsburgh area. And the reasoning I was given: to prevent the glass from blowing out onto somebody trying to use the fire escape?
  8. DennisR4

    Hydraulic Area for Residential with Comubstible concealed space.

    @sprinklerdesigner2 you said your job has OPEN wood trusses, yet the quote from the submittal mentions SOLID wood joists or trusses. doesn't sound like apples and oranges?
  9. DennisR4

    Water curtain - Pipe sizing

    I had a similar situation on an open parking garage we did a few years ago. The building was built 5 feet off the property line, and the AHJ made us add a water curtain to the open side closest to that property line.
  10. DennisR4

    Hydraulic Calculation Safety Cushion

    Ok, so I recently had an engineer and an uncertified sprinkler "designer" tell me that NFPA states when performing hydraulic calculations, you need to end up with a cushion of 7 psi below your water source? I have scoured my copy of NFPA 13, and I do not see where this is stated? I think they...
  11. DennisR4

    Black piping in a dry system

    That was part of my point Travis. I was arguing with my co-worker that it did not apply to all dry systems. He argued otherwise.
  12. DennisR4

    Black piping in a dry system

    I believe this issue has been brought up on here before, but I can't find the thread. NFPA13 states that galvanized piping must be used in a dry system (NFPA13 2013ed. 8.4.7.2), however this is listed in the section 8.4.7 CMSA Sprinklers. So, if I read that correctly, this only applies if you...
  13. DennisR4

    Fire Pump training in Ohio?

    FireTech, for sure...
  14. DennisR4

    Sch 7 pipe and other thinwall pipe

    I love when other contractors use Schedule 7, because, much like NewtonFP said, it rots out fairly quickly. We have replaced a TON of it in the past few years, and most of it wasn't that old. Personally, we only use schedule 10 & schedule 40. Saves having to worry about getting called back to...
  15. DennisR4

    Is there an add-on program for Auto

    Here is what I use: https://www.hydratecinc.com/
  16. DennisR4

    unheated vestibules

    I agree with Travis, depending on the size, I would typically use a dry sidewall in this application.
  17. DennisR4

    AutoCAD LT for fire sprinkler design

    I work from home from time to time, although it is company work, not side work. At the office, we have a subscription seat for AutoCAD, and I use HydraCAD as well. AutoCAD lets you use their product on more than one computer, but only on one computer at a time. HydraCAD can be used on any...

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