211 residential decks - city of san diego
mar 3, 2013 cations for decks. a. the concrete mix for footings must meet a compressive strength of f'c= 2,500 psi mini- mum. b. lumber must be douglas fir-larch no. 2 or better. all lumber . when solid-sawn pressure-preservative-treated deck ledgers are attached to a minimum 1 inch thick engineered wood prod-.