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roof

  1. N

    warping roof steel to avoid adding crickets

    The GC on this single story tilt project has suggested warping all the steel on the low end of the building in order to save money by not having to have built up insulation crickets. Does this seem like a cost saving measure or just a huge headache to get the placement of the embed plates and...
  2. S

    Fire Wall Does Not Extend to Roof in Row Townhouse

    The first image is a row townhouse under construction, the second picture is from Ontario Building code. The attic of the first picture looks like inaccessible, and the fire wall does not extend all the way to the roof as required by Ontario Building code based on the second picture. Is this...
    • sunyaer
    • Thread
    • attic firewall roof row town house
    • Replies: 16
    • Forum: Canada
  3. S

    Does a 2mX2m solar collective panel attached to the roof of a house need the design of a P.Eng.?

    As per Ontario building code, does a 2mX2m solar collective panel attached to the roof of a house need the design of a P.Eng.? Where is the clause of the code?
    • sunyaer
    • Thread
    • house roof solar
    • Replies: 5
    • Forum: Canada
  4. S

    Wall Exposed to Adjoining Roof

    This is from Ontario building code Division B: ----------------------------------------------------------------------------------------------------------------------------------- 3.2.3.15. Wall Exposed to Adjoining Roof (1) Except as permitted by Sentence 3.2.3.19.(4), if a wall in a building is...
    • sunyaer
    • Thread
    • exposed wall fire compartment fire separation roof sprinkler
    • Replies: 4
    • Forum: Canada
  5. S

    Are holes in perforated soffit vinyl panels counted as vent openings?

    This is from Ontario building code: ------------------------------------------------------------------------------------------------------------------------------------------ 9.19.1.2. Vent Requirements .... (3) Required vents are permitted to be roof type, eave type, gable-end type or any...
    • sunyaer
    • Thread
    • opening roof soffit vents vent
    • Replies: 8
    • Forum: Canada
  6. A

    APA Span tables remarks

    They are engineered I get it, but APA span tables for sheathing - 7/16 live load of 40 psf vs 15/32 is 70 psf. pretty much 1/32" gets you 30 more psf? Seems a bit crazy to get 75% more load out of 1/32." Its engineered but I find that hard to believe. I am returning my 7/16 osb because I...
  7. B

    Occupied Roof: paver system over low slope TPO and polyiso insulation

    Hello friends, I have a question about an occupied roof paver system on a low slope tpo assembly. The basics: Type IIB building. Two floors are Business occupancy, 10,800 sqft per floor. Roof (the third floor, the highest floor) is partially occupied, Assembly occupancy 3,800 sqft. We have...
  8. B

    Unconditioned Roof Cavity

    Is it required to ventilate an enclosed, uninsulated, roof covering an extrior porch? If so, is there a required ratio (free-air vent opening vs. roof area) for this type of roof?
  9. eyan50495

    High Voltage Transmission Lines Over Building?

    Hi, A contractor I've worked with on a previous project just asked me if I know anything about this subject. I haven't encountered it but I can't find anything on it from a building code or fire code point of view (just OSHA). A multifamily mid-story building in NYS is being constructed...
  10. eyan50495

    Ceiling Finish / Fire Issues?

    Hi All This is for a NYS Commercial Space (M): -1 Story + Basement -11,000 SF Floor Plate -Type V-B (Fully Sprinklered) -Roof Construction: Steel Posts, Microlam Girders with TJI Joists + Advantech Roof Sheathing -1st Floor Construction: 3-1/2" Concrete on Metal Deck over Microlam Girders w/...
  11. T

    Parapet Fire Rating: 705.11

    Existing building is Type 1A, low-slope roof, parapets vary, but most are less than 30". Existing construction dwgs show FRT plywood on roof side of balloon framed steel stud wall/parapet. Existing roof membrane extends up and is adhered to FRT, lapping over top track, and then covered by wood...
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