What do you call the beam where you bolt 2-2"x 8"s (for example) to the sides of the top of a post?

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if you're talking beam runs parallel house wall, attaches posts , supports weight of rafters, it's called support beam. rafters run house , sit on top of support beam. 30 ft run, ( live ) use 2 two x 12s. depends on state live in, because each state has building code exact sspecifications need place call to, or visit county building inspector before attempt project. post size, beam size, bolt size, rafter spacing number of inches between screws dictated. work have approved , inspected. if isn't done code, made tear down. codes extablished homeowner safety, best use of products, , ensure roofs lasts many years.
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also, want build 30' x 13' patio cover using beam lower support, how far can span 2" x 8"s? going have plastic corrugated roof.


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