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  • Users: Hoboneer
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  1. Hoboneer

    Excavation >20'

    There's an OSHA trigger that if excavation is deeper than 20' it requires a "design by a professional engineer". If it's just an open excavation at 1.5:1 max slope, is anything else required besides a basic plan showing the extent of excavation, a section showing the max slope, reference to the...
  2. Hoboneer

    Maximum ramp slope for a truck scale

    What is the maximum and "comfortable" slope for an on/off ramp for a truck scale?
  3. Hoboneer

    Foundation for modular field office

    For the purposes of foundation, would you treat a modular field office (think shipping container type with a door and window) as a regular structure and provide footings with a minimum depth for frost per local code? Or you would you think of it as an "equipment pad" and just do a slab with a...
  4. Hoboneer

    Closing existing opening in 2-way slab

    How would we reduce up an existing opening in a 10" thick flat 2 way slab? I'm going form about 8x12 down to a 4x3. My ideas are: 1. Epoxy anchor angles into 2 sides of the opening then drop in form deck with rebar and concrete, epoxy doweling the rebar into the edges of existing. 2. Dowel rebar...
  5. Hoboneer

    Supporting noncombustible secondary framing on conmbustible primary

    Is there any kind of code stipulation that prevents supporting secondary non-combustible framing members on primary combustible member? For example supporting C-joist roof framing on an LVL middle girder that's further supported on steel columns? Further, is there code stipulation that prevents...
  6. Hoboneer

    Concrete slab thickness based on aggregate

    Does anyone have a quick reference to where in the ACI it states that minimum thickness of a concrete slab should be 2.5 times the largest aggregate in the mix?
  7. Hoboneer

    shoring/sheeting for new elevator pit within existing basement

    A 6'-6" deep 24'x12' pit needs to be excavated in an existing basement. The clearance from slab to 1st floor joists is 9.5' so only a small minim excavator can be brought in. Is wood sheeting/lagging the only way to go or is there anything else that can be installed by hand or a small machine?
  8. Hoboneer

    Over-excavated basement

    I was called to a row house with party-line common walls where a contractor has over-excavated the basement, undercutting the foundation walls/footings by about a foot. Naturally, he got a stop work order from the inspector. The bottom of new slab isn't going to be below the existing footing...
  9. Hoboneer

    How long can form oil last on forms?

    So the contractor built the form but is unable to pour for a while due to some unforseen conditions. Is there a code stipulation as to how long the form release agent can be on the forms before pouring the concrete?
  10. Hoboneer

    ACI 530.1 05 Table 2

    ACI 530.1-05 Table 2 Why are there different strength units listed under Type M or S and Type N mortar? What does this mean? That 2150 psi units can only be used with type N mortar?

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