Hi

I've been asked to build a 15' x 12' wooden deck to hold a hot tub. Most of
the joists can rest on a small retaining wall, a concrete slab and a wall
plate fixed to the garage wall.

The tub holds 1300 + litres of water & up to 6 adults, so adding the (as yet
unknown) weight of the tub itself I could be looking at 2 tonnes here.

Would I increase the strength much by spacing the joists at 12" rather than
16" or would extra noggins be a better bet?

Cost isn't the major issue, I just want to make sure it's strong enough.


--
Dave
The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257