![]() ![]() Obviously I don't want it to collapse, but I also don't want to spend more on materials than I need to. I have been welding for about 15 years and am confident in my welding ability, I am just not really sure what size material I need for this. That would be 6 guys at 200lbs plus 800 lbs of desk, furniture, etc. I figure the maximum weight up there spread over the whole area will be 2000 lbs. Is this sufficient? What size of purlins are required to span this 10'? 3", 4" ? I am thinking of using 3/4" plywood for the floor and spacing the purlins 2' apart. I am needing to weld some more purlins in there to span this 10' gap and to attach the floor to. The purlins are parallel and 10 feet apart. Maybe a small table on one end for poker night with the buddies.Īnyway right now I have 10" C purlins ran across the length of the shop that I am going to build the floor on. Nothing fancy just a desk, and a warm clean space to work on stuff. Start with the 16. Using Table F-2 (Figure 3), check each lumber size to see if a 16-inch spacing will permit a span of 15 feet 1 inch. Also see Using These Tables and five Examples showing how to. For each application, a PDF download is available. These 46 tables are based upon design values for visually graded Southern Pine dimension lumber that became effective June 1, 2013. ![]() The Table of contents indicates that Table F-2 matches these loading conditions. Tables listing Maximum Spans for Southern Pine joists and rafters are detailed below. This table, from Span Tables for Joists and Rafters, gives the required values for various design conditions an addendum that comes with Design Values for Joists and Rafters gives the valies for specific species. Visit the roof framing page for more information on cutting roof rafters, and visit the roof pitch calculator for determining rafter lengths based on rise and run. It is going to be 10 feet wide by 30 feet long. Step 2 Span Table: Select the appropriate table in Span Tables for Joists and Rafters. Rafter Span Tables - Use these tables to determine lengths, sizes, and spacing of rafters based on several factors such as species, load, grade, and spacing. I built a steel building that is tall and I am wanting to add a second floor in it for a sort of office for me. ![]()
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