How to erect Steel Beams without a crane or power equipment
How steel beam construction is done where there is no power equipment. I assume all third world countries use this low tech approach. After watching this house being built I realized it is not so far fetched for ancient civilizations to have built large structures.
Видео How to erect Steel Beams without a crane or power equipment канала David McGraw
Видео How to erect Steel Beams without a crane or power equipment канала David McGraw
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