▲ 2 r/Decks
Hello all!
I am planning out a ground level deck, but have some questions about structure.
The deck is about 20' wide by 18' deep.
I need to keep the deck LOW so that my door can open onto it, which means no beams, just joists.
With the way that I have the concrete blocks, would this provide sufficient framing? I am planning to use standard deck-boards.
- I've highlighted the joists that will be "supported" on the deck blocks.
- Planning double rim joists on each end - But given the 20' length I am going to sister two different board sizes together (A 12' and an 8' alternating)
- I know that I have uneven spacing between the last supported joist (Left to right), but wondering if this matters much? If so, I'd shorten the deck up from the left so that the joist spacing is consistent.
- Joists are 16" OC.
- Increased blocking on the outer edges to support the cantilever.
- I realize that the left/right blocking is a bit inconsistent in places - I am planning on building a pergola supported by ground anchors/ground hogs that will be structurally unattached from the deck (but still "push through" the deck).
- The increased blocking is to support the deck boards around the pergola posts.
Additional picture with intended placement of Pergola here:
Is there anything that r/decks would recommend here? A change in the amount of support blocks? Do I need more, or less?
I live in a cold northern climate, so we do get frost heaves. The soil has a lot of clay here, so the ground doesn't swell too much, but it does get down to -40c some days in winter (and +40c in summer).
u/LeeStrange — 22 days ago