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  1. mn321

    turndown slab or floating slab

    I have to design a turndown slab. Slab on grade with thickened section at perimeter winding down to the thickness of the slab on a 45 degree angle. This is for a prefabricated metal building having a span of 40'. The rigid frames are spaced roughly 25' c/c. My concern is for the point load...
  2. mn321

    Quebec snow load

    Orford : Use the loads for St-Denis-de-Brompton located less than 15 km away, and roughly the same elevation. Ss = 46.0 psf (ground snow load) Sr = 12.53 psf (Rain Load) Wind Pressure ( 1/50 years ) = 6.70 psf Refer to the Canadian National Building Code 2005 part 4 if it is a commercial or...
  3. mn321

    Insulation required for frost protected shallow foundation

    perhaps these links might be helpful : Turn-down slab foundations are commonly used in Scandinavian countries . http://www.countryplans.com/Downloads/shallowfound.pdf http://building.dow.com/na/en/applications/building/foundations/foundationshallow.htm...
  4. mn321

    Hair Pin Design

    Thaks for the insight. I found the formula from ACI-318 : Ld = 3*db*fy*B*g --------------- 50*(fc)^0.5
  5. mn321

    Hair Pin Design

    I was wondering isf anyone knew how to determine the hairpin required length to be embedded in the slab. I have 15 kips. If I use 0.9 x .750(#6 bar) x 60 ksi = 37.8 kips. If I wish to determine how long I need the hairpin to penetrate into the slab.
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