Room Additions in Encino
Plan a room addition in Encino by settling up or out first, with footings checked and tie-ins drawn for LADBS by Aspenwell Construction.
Up or out is the question to settle before a line is drawn, and in Encino the answer starts under the existing floor. A second story asks old footings to carry load they were not sized for. A ground-floor room asks for new footings and a clean joint to the old ones. Each route has its own tests, and we walk through both on the first visit.
Building up: what the old footing is asked to do
A second floor adds weight to every wall below it and adds sideways force when the ground shakes. The load path runs from the new roof through the walls and floors into the footing, and any weak link along it needs reinforcement. We expose the footing, measure it, and hand the numbers to the engineer. If the existing concrete falls short, the plans may add footing sections, posts or plywood shear walls on the floor below, built before the new floor goes up. Most of that can be checked from the crawlspace and the attic before the drawings are final.
Building out: matching the floor and the footing
A ground-floor room needs its own foundation sized to the soil and the walls above. The new footing is doweled into the old or separated by a joint, as the engineer decides, and the new floor is framed to meet the old at the same height. The inland sun and dry wind that wear on an exterior finish are a reason to detail the roof joint carefully, because flashing there takes hard wear. Permit review goes through LADBS. The inspector looks at the dowels and reinforcing before concrete goes in.
Room Additions in Encino: questions
Concrete is only half the story. A second floor also loads the walls below it, and those walls need bracing against sideways shaking. The engineer checks the footing we expose, then the plywood and hold-downs on the lower floor. Whichever link is short gets strengthened before the new floor is framed.
Joists meet the old walls at a ledger or a doubled plate that the engineer details, and rafters lap into the existing roof with straps for uplift. We open only the strip of finish those parts need. The outside junction is flashed as it is built, long before siding or stucco covers it.
Often, because the access is shared. New footings mean the crawlspace is open anyway, so anchor bolts and plywood on the short walls of the old house can be added within the permit. One inspection visit then covers new and old, and the whole house sits tied to the same foundation.
Room Additions in other cities
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