Question:
How can I splice the floor rim joists if I can’t find lumber long enough to build a shed?
Answer:
(See shed plans, Figure 2.2, Splice rim joists for large shed floor)
If you’re building a large shed and can’t get lumber long enough for the rim joists you will have to splice them.
Place the ends of the rim joists together and lay the splice over the joint. Layout the floor 12 inches on center and extend the marks onto the splice. Assemble the floor starting with the 8ft splice.
Cut the joists you install here 3 inches shorter than Dimension “C”. When this splice section is assembled then attach the rim joists making sure to line up the layout marks and secure the 2 rim joists to this splice with 16d nails or 3 inch screws every 12 inches staggered along the top and bottom edges.
Attach the rest of the joists as normal.
This 8 ft splice will make the shed floor as strong or stronger than an un spliced rim joist.
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