1601 W MacArthur Blvd - Plan - Laserfiche WebLink

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Basis of Design: The existing apartment community was constructed in 1980's. The property is co apartment buildings each being two stories high and are wood frame constructior elevated decks and balconies were inspected in accordance with SB 721. Based inspection decks that needed repairs are being addressed under a permit applic CITY OF SANTA ANA Planning and Building Agency Tlo� Approved FOR PERMIT ISSUANCE )riled of 36 Nla%epJBof the To the most part, the existing structure is being kept and existing design is being retained. Most of the cantilever floor joists were observed to be satisfactory and mostly the witnessed damage was on the plywood decking. The basis of the design for repair is applying the California Existing Building Code with limited or minor structural repair. Removal of concrete decks and existing plywood on balconies will require removal of wood railings at that time. When the railings are returned after the decking is replaced, the new railings will be spaced closer to each other to prevent a 4" sphere from passing thru the balusters. This will improve an existing condition that has up to 8" gap in balusters at some locations. The new balusters will be attached to a new 3 x 10 ledger that will be attached to existing 2 x 10 joists with Simpson joist hangers. This new ledger will give sound connection for Simpson Wood Screws SWWS22500 screws. The original railing design otherwise will be maintained so the property's design is not altered. On the balcony walkways, the concrete decks will be replaced with plydeck system that includes a base plywood decking plus a sloped plywood decking. The sloped decking will be covered with an epoxy system to keep water out of the assembly. Several individual apartment decks also have some repair work to replace exposed dry rot deck boards or joists. For the most part, the scope of the work is removal and replacement in kind. For confirmation, structural calculations are provided herein, but the basis of design is removal and replacement per the California Existing Building Code.