Do I need a double Joist...??
I'm building a 17' x 17' deck using deck blocks which is at ground level. The trusses & joists are 2x6s. Based on advice given from someone at HomeDepot I was told to double up the joists for the 2 main trusses running the length of the deck.
Is this necessary or overkill?? The deck blocks are spaced approx. 4' 2" going East-West and approx. 5' 7" apart going North-South.
Your advice is much appreciated.