Room Additions in Playa Vista
Second-story additions in Playa Vista framed by Aspenwell Construction for a stiff, quiet floor, with joists, posts and footings planned as one load path.
Footsteps overhead tell you, every evening, how well a Playa Vista addition that stacks a bedroom over a living room was framed. A floor built to the bare code minimum can pass inspection and still bounce under a running child or rattle a lamp on the side table. We size the new joists to resist sag as well as to carry weight, so the room underneath stays calm and the one above feels solid underfoot.
Framing for a floor that feels solid
Deflection is the measure here: how far a joist sags at midspan under people and furniture. The code sets a limit, and for a bedroom floor above a living space we ask the engineer to design tighter than that limit. Deeper engineered I-joists, closer spacing or a shorter span with a dropped beam all get there. The subfloor is glued as well as screwed, and solid blocking ties the joists together so a step on one spreads across several. Posts that carry the new beam stack over posts or footings beneath them, so the load reaches the ground in a straight line.
Keeping sound where it belongs
Sound moves through a floor in two ways, through the air in the cavity and through the framing itself. Mineral wool between the joists handles the first. Resilient channel under the ceiling drywall cuts the second by keeping the ceiling from touching the joists directly. Drain lines from an upstairs bath are wrapped and routed away from a bedroom wall when the plan allows. LADBS reviews a Playa Vista set, and whether the parcel lies within the coastal zone is checked early, since a coastal approval, if one applies, would come before the building permit.
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Room Additions in Playa Vista: questions
The engineer answers it with numbers: footing width and depth, the soil, and the walls that will end up carrying the new floor. Any of those that comes up short for the added weight gets reinforced, with fresh concrete or extra posts, before upstairs framing begins.
Mostly at the tops of the old walls, then down through them to the foundation. New floor joists bear on existing walls or a new beam, hold-downs connect upper shear walls to the frame beneath, and straps carry tension across the floor line as the plans specify.
Bracing the ground floor matters more once a heavier story sits on top of it. If the engineer finds the first-floor walls or the sill connection short for the new load, that work becomes part of the addition. Anything beyond it is listed separately so it can be weighed on its own.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.