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Oak preferred or Douglas Fir timber mats come in a variety of sizes such as lengths from 16' to 20' and thickness 4” to 8”. These materials also vary in weight and by vendor availability. The most import aspect is whatever the thickness, they need to bundled or bolted together due to the flexibility of the different species of wood to run the calculations properly. Keep in mind that you may want to build an air bridge from time to time whenever, extra heavy equipment and unstable soil conditions exist. (See attachedbelow).
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