Room Additions in Beverly Hills
Beverly Hills room additions that open a wall into the old house with engineered beams sized for the span, drawn for city plan check.
Laminated veneer lumber is the beam material we reach for when a Beverly Hills addition opens a wall into the old house. Its glued layers resist the sag and twist that sawn timber can pick up as it dries, so a wide opening stays level under the ceiling above it. Where the span or load is too great for wood, the engineer moves to a steel beam.
Choosing the beam
The beam is sized by the engineer from the span, the load it carries and the limit on sag. Under each end, a post passes that load into a footing, which is why a new pad is often poured beneath them. Hangers and bearing plates are galvanized steel, and the connections are drawn as details on the plans. A temporary wall holds the ceiling while the old studs are cut out, then the beam is lifted into place and bolted at each bearing.
City review of the opening
The city building department in Beverly Hills reads the calculations for the beam, the posts and the footing under each post. Reviewers look for a continuous path from the roof, through the beam and posts, to concrete in the ground. Designer, engineer and our office assemble the set, submit it and respond to any corrections. Inspectors see the steel and lumber in the opening while it is still uncovered, and the written quote lists them by size, so a longer span shows up as a changed line.
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Room Additions in Beverly Hills: questions
Possibly, after the engineer checks the old footing against the added floor load. The width, the depth and the bars inside it all count. Any footing that cannot take the load is helped with new sections or posts beneath the walls in question, placed before upper framing begins.
The new floor is carried by a beam or by a ledger anchored to the old wall, and metal straps connect the added studs to the framing below. Roof sheathing carries over the seam, which lets the old and new sections brace each other. Flashing closes the roof joint, and only the strip of old wall required is opened.
An exposed crawlspace puts the sill bolts and low walls within reach without extra demolition. That work is added to the building permit and checked at the same inspection, so disruption stays small. The quote shows its price on a line of 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.