Adding 2 extra beams to your bridge will increase the weight capacity by 60%. This is prefect for high traffic bridges of long bridges that will have a lot of people on them at one time.
2 Extra Beam Counts:
27" wide - 4 beams (Standard is 2 beams)
3' wide - 4 beams (Standard is 2 beams)
4' wide - 5 beams (Standard is 3 beams)
5' wide - 6 beams (Standard is 4 beams)
6' wide - 7 beams (Standard is 5 beams)
7' wide - 8 beams (Standard is 6 beams)
8' wide - 8 beams (Standard is 6 beams)
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