Q. I'm getting ready to build a large room addition that needs a beam to support the floor joists. I've been told that a wood beam will work, but I've always seen steel I-beams in other houses. Is it ...
A structure is a 3D shape made from different materials and parts. Some can be simple to build, such as a wall. Others can be complex, or harder to build, such as a bridge or a building. The strength ...
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