Raised Deck details

[AndyDOHD]

HI,
New here and seeking advice.
Iam building a raised deck to put a "tree house" on. It is 2 metres off the ground at one end and 1 metre at the other. I have already placed a numbe of vertical supports and placed a periimeter of "joists" (14cm x 4cm x 350cm) in place. I have attached the perimeter joists to the upright posts using a M8 x 125mm coach screw and 1cm by 10cm coach screw.

I am about to add a number of floor supporting joists and wondered which type of coach screw should be used? I have bought Long coach screws (1cm by 20cm) and wondered whether these would be appropriate to join the joists to the perimeter joists at 90 degrees?

I also have M8 x 125mm 5/16" x 5") coach screws.

I have had a bit of difficulty tightening the coach screws and managed to "knacker" the socket (from a socket set) in the process despite predrilling the holes for the screws. Any advise would be gratefully appreciated.

 

[Belboz]

Welcome.

You may get more advice if you re-post this in the BUILDING or IN THE GARDEN section.

Just start a new topic there and copy and paste.

Someone will be able to advise but, may I ask whether this is permitted development?

 

[freddiemercurystwin]

permitted development?

Ain't no PD will allow a 1m deck but maybe he's in the sticks.