Question:

Building a 16' x 16' square pergola using four 12" cement columns. What size beam can span this?.

by Guest9078100  |  2 years, 11 month(s) ago

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Can I use 4x8 16' length without a center support? Will this sag? I was going to use rebar only between the spans to drape fabric across in the summer, remove in winter.
Thanks
Aris

 Tags: 12, 16, Beam, building, cement, columns, pergola, size, Span, Square, Using

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