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  1. Steel2Steel

    Radiant Piping in Elevated Slab

    We have a floor system that consist of 3” 18 Gage Deck with 2 ½” LW concrete slab for a total thickness of 5 ½”. The architect has requested to install ½” ID radiant piping in the floor system. I am not sure exactly what the spacing of these pipes are, but after doing a little research, it...
  2. Steel2Steel

    Relocated Building - Slab on Grade becomes Elevated

    We are relocating a building in which a slab on grade is going to become and elevated slab. The building mover is proposing a system of masonry piers 24" SQ spaced at 4'-0" OC each way to sit the new slab on. They will grout beneath the bearings at the piers to ensure direct bearing. They...
  3. Steel2Steel

    Basement Costruction

    I posted this under the geotech section by accident. Please don't scold for reposting........... A friend of mine is about to build a house. He has a basement that is fully buried on one side, about half of the side walls are buried, and the rear is completely exposed. I have a couple of...
  4. Steel2Steel

    Basement Construction

    A friend of mine is about to build a house. He has a basement that is fully buried on one side, about half of the side walls are buried, and the rear is completely exposed. I have a couple of questions. 1. What construction is better, CMU or Concrete? Obviously the Concrete is more...
  5. Steel2Steel

    Unbraced Length of Beam for Uplift

    I have a condition where i have a roof that consists of perimeter steel beams with timber trusses bearing on these beams. For gravity loads, a W16x26 works for strength and deflection. When this beam goes into uplift, the bottom flange is completely unbraced for the entire length of the...
  6. Steel2Steel

    Composite HSS Design Properties

    Does anyone know a good reference for transformed section properties of a concrete filled HSS? I know the LRFD manual gives design values for compressive loads. Any help would be greatly appreciated. Thanks in advance.
  7. Steel2Steel

    Allowable Bearing Capacity

    I have a situation where I have a foundation/retaining wall. The wall is 16' tall and is retaining 13'10" of soil on the one side. On the other side, the grade is sloping and at a particular location is 9'-6" above the top of the footing. I have a 100PSF surcharge load on the side the soil is...
  8. Steel2Steel

    Allowable Bearing Capacity

    I have a situation where I have a foundation/retaining wall. The wall is 16' tall and is retaining 13'10" of soil on the one side. On the other side, the grade is sloping and at a particular location is 9'-6" above the top of the footing. I have a 100PSF surcharge load on the side the soil is...
  9. Steel2Steel

    Reinforced Concrete Elevator Shaft

    I have a freestanding reinforced concrete elevator tower with brick veneer, approximately 36’ tall. It is tied back to the building by an elevated exterior concrete walkway slab on one side at the midspan of the wall. I was going to design this shaft as self supporting, treating each wall as...

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