Storage Building
Budget: $750 – $1,500 USD
Looking to build a 20 x 40 under ground storage building which will be built out of 10 inch cinder block filled and reinforced with concrete and #5 rebar metal deck roof with a 4 inch thick concrete roof reinforced with #4 rebar and covered with 1ft of earth. Need to know what size I-Beams I will need to carrier the load on a 20ft span. Project in SW Virginia.