I am working with a client who wishes to utilize reclaimed timber. We have designed the project using standard sections of new Doug Fir. I am being asked to provide a list of materials, but feel uncomfortable sizing timbers with defects (bolt holes, pipe holes) without seeing them first. I am feel that each timber will have to be inspected, and depending on the size, quantity and location of the defect will determine the increase in size required. This will greatly affect and complicate the design and standardizing timber sizes.
I would like to know if anyone has developed a rule of thumb starting point to deal with this dilemma. Also if a defect is plugged how does this affect the integrity of the timber?