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Advice on number of posts to use for new decking project

Postby Crosby33 » Sat May 16, 2020 11:07 pm

I am building decking on grass, it will be rectangle length 4.7m2 by 3.0m2 14.1 metre sq. i will be using 100mm x 47mm tantalised timber for the bearers and joists, I will have 5 joists running the length, but a little unsure how many posts to use. I was looking at for the outside frame to have 3 post for the length and depth and having 3 post per joist but wasn't sure whether this is over kill. I will have concrete block in the ground to support the frame
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