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Recent content by Dave169

  1. Dave169

    Floor Joist Patch

    The top chords of several TJI Floor joists were completely cut by a crazed tile layer. There is not room or access to place new joists next to the damaged joists. Would a patch work? I am thinking of packing out the joists with the appropriate sized plywood and sandwiching the damaged...
  2. Dave169

    Extending a glulam beam by splicing another on it

    Is it possible to extend a glulam beam (5.125" x 12") approximately 40" by splicing another glulam beam next to it? I assume the overlap needs to accommodate a bolt pattern to withstand bending and shear stresses. Are there other factors to be considered? A contractor put to short of beam in...
  3. Dave169

    Transfer lateral force between offset floors

    I am reviewing plans for a friend in which the upper floor of a Prairie style house is supported by beams and columns and is located over the middle of the lower floor. The floor diaphragm for the upper floor does not extend to any exterior shear walls on the lower floor and there are very few...
  4. Dave169

    Backfill slope

    Thanks for your replies. The geotech. who did the soils report confirmed I could use the lower EFP values since a level condition will exist behind the retaining wall for 10 feet (the height of the wall). With the lower # I have a more econimical design. David
  5. Dave169

    Backfill slope

    I am designing a 10' cantilevered retaining wall. I have a geotechnical report on the soil. They provided an equivalent fluid pressure of 47 pcf for level back fill and 78 pcf for a backfill sloping up to 2:1. The retained soil will be level for the first 10 feet then slope up the hill. Can...
  6. Dave169

    Storage barn made out of shipping containers

    Richard, These are Steel containers. Thanks for your help.
  7. Dave169

    Storage barn made out of shipping containers

    A friend is builing a storage shed using stacked shipping containers welded together with a trussed roof attached. The structure is 5' from a small convetially framed office building. The plans examiner wants a 3 hour fire rating due to the distance between buildings and their classifications...
  8. Dave169

    Roof Sheathing

    Hi boo1, The truss system is 2x6 and was designed for the 55 psf snow load. Thanks for your help. David
  9. Dave169

    Roof Sheathing

    Thanks for the replies, It seems there is a difference of opinion whether two layers is twice as strong if they are unbonded. It does add more dead weight but only 1.5 psf. Intuitively, I think two layers unbonded would be stronger but how much, and how can I model this? Since 37Ed, had a...
  10. Dave169

    Roof Sheathing

    A contractor in my area recently sheathed a roof with 7/16" 24/16 OSB on 24" O.C. joists. Unfortunately for him, the system he installed is rated at 40 psf allowable live load which is lower than the snow load requirement of 55 psf. If he adds another layer of sheathing to the roof will the...
  11. Dave169

    Hip roof with cathedral ceiling

    Thanks for the help. I think I'll try to talk the Architect into using scissor trusses or something to support the ridge beam such as columns or trusses. A tension ring or flat ceiling around the perimiter that acts as a tension ring is a good idea but would interfere with the other portions...
  12. Dave169

    Hip roof with cathedral ceiling

    I am reviewing a set of plans in which a Hip roof with a cathederal ceing is specified. The roof system consists of a ridge beam and 4 Hip beams. The interior is pure cathederal with no columns supporting the ridge or hips and no collar ties. The roof is rectangular 48' x 28', Roof pitch...
  13. Dave169

    Rebar Requirements

    I am designing a concrete columm to support (4) 12" x 12" timber columns that form a square with 6" space in the middle. The Timbers have a small compressive load (3K each) and are only this large for aesthetics. Ideally I would like a 30" x 30" x 72" column on top of a footing to support...
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