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  1. DerekYY

    Concrete Slab Within Fill to Protect Underlying Pipe?

    Update, we are working with two options right now. 1. Sliplining a 10" Stainless Steel Pipe between the HDPE pipes. Note that the worries with the sliplining is that both the outer and inner pipes have weld beads on the inside and outside of each 20' section welded together. It's a...
  2. DerekYY

    Concrete Slab Within Fill to Protect Underlying Pipe?

    Shark, Thanks for the response. I think the weight of the slab wouldn't hurt too much. There would be approx. 225 ft of 65pcf material over top of the slab. By soil screws, do you mean like columns or supports beneath the column. I don't thik this is an option since the pipe actually sits...
  3. DerekYY

    Concrete Slab Within Fill to Protect Underlying Pipe?

    I am working on a landfill project in which an existing HDPE pipe is beneath the existing landfill. The pipe strength is adequate for the existing conditions. It is proposed to expand the landfill with a great amount of additional fill over the pipe. It has been determined that the pipe is...
  4. DerekYY

    Allowable Load/Moment of Structural Steel Tubing?

    Are there any standard tables or literature listing the allowable load and/or moment of structural steel tubing used as a beam. Specifically, I'm looking for a 6"x2"x1/4" used as a joist over a 7.75ft span. The AISC ASD Manual doesn't list this info for structural tubing. Just...
  5. DerekYY

    Steel Diamond Tread Plate?

    Hi everyone. First post and need help lol. Have a client who wants to use 3/16" steel diamond plate flooring for a second floor of a storage garage. I'm looking for a load rating (of sorts) to determine max live load. Been browsing sites with no luck. Any help or direction is...

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