The manufacturers of trusses either have an engineer in house or contract with a licensed engineer to stamp and sign the truss design. Manufactured trusses are not exempt from the licensing laws. When have you ever seen manufacturers instructions being stamped and signed by a professional engineer? In addition the professional engineer must affix his professional stamp and sign the document. Only individuals, not corporations, can be licensed engineers. The project manufacture cannot be the project engineer. Neither the local jurisdiction nor the building department has such authority. It has been suggested that by following the manufacturers instructions you can bypass the states licensing laws. They had to review it to draw it, and if my memory serves me right depending on the lumber yard and supplier, they produce full floor plan sets and layouts with the manufactures instruction notes on them that can also be obtained on larger homes. Mark, though the manufactures span tables might not be in the code specifically, aren't the span tables considered the manufactures installation instructions and does not the IRC direct all product to be installed per the manufactures directions, thus does this not drag the tables in to the code by the IRC requirement?Īnd by dragging in the manufactures instructions, does that not alleviate the need for an engineers report?Īs to the submittal, requiring the applicant to submit copies of the engineered lumber manufactures installation instructions and copies of highlighted tables showing each members call out would seem reasonable to me. They are simple to produce the manufactures report if you know the information you are inputting.Īs an inspector or plan reviewer not sure how much time you want to spend searching for things like this, therefore require that it be in the submittal. Here is one of the ones I used in my personal project. I believe the IRC requires the manufactures specifications for installation to be followed and all the engineered lumber manufactures I have used had "FREE" online calculators that I have used that produce a printout showing pass or fail for the use fore which the homeowner can drop in a note on the plans and supply the printout from the manufacture.
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