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American steel span foundation guide.
Table 9 1 in span tables for joists and rafters figure 5 gives a required compression value of 237 psi for a span of 16 feet and bearing length of 1 5 inches.
This selection should be carried out cautiously for any type of steel building.
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Regardless of what type of steel building you choose you will need to consider steel building foundation options before construction your building excluding storage containers.
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The tables permit a bearing length of up to 3 5 inches but since 1 5 is probably the worst case that you ll encounter for joist or rafter bearing it s a safe value.
Before the foundation is poured the land must be professionally surveyed to ensure the building site is level and that the builders know the exact boundaries of the plot.