Structural Work in Altadena
Galvanized steel and heavy timber for the outdoor side of a new opening: Palmcrest Contractors plans Altadena structural work with embers in mind.
Where a new opening reaches the outdoor side of an Altadena house, the beam and post material gets chosen with embers in mind. Galvanized steel will not ignite from a stray ember, and heavy timber chars slowly, while thin bare lumber lights easily. The county building department reads those choices in the plan set, and the structure is drawn to suit.
Steel where the frame meets the outdoors
Hot-dip galvanized posts and plates resist rust at the bottom of an opening where splashes and irrigation reach them. They are noncombustible, so a stray ember finds nothing to light. On the wall plane the beam can be steel or glued-laminated timber wrapped in cladding. Exposed timber beam ends under an eave are the soft spot, so they are either enclosed or replaced with a heavy section that chars slowly. Connectors are stainless or galvanized, matched to the metal they touch to avoid corrosion between different metals.
Ember-resistance and the county review
Some of Altadena lies inside mapped fire hazard areas, and a property there may be held to ember-resistance requirements. Those can reach vents, eaves, siding and glazing around the new opening, which means the structural drawings and the exterior details have to agree. The county building department reads both. We confirm the lot's status during the review and draw the frame, post bases and beam ends to whatever it requires. Sorting that out before demolition keeps the opening from being redrawn after the wall is gone.
Structural Work in Altadena: what people ask
Look for what rests on it, such as joists, a roof ridge or a second floor. An exterior wall almost always carries roof or floor weight, and interior walls need the attic check. Where earlier alterations changed the framing, old drawings may not match what is in the wall, so it gets verified in person.
Possible when the section is shallow enough. A steel flush beam covers wide spans with less depth than timber, though fire-resistance rules for ceilings can influence the choice. Where the beam must drop, the drop is finished neatly. The engineer's numbers decide which route is open.
Stamped sheets come from a structural engineer licensed in California. For Altadena they go to the county building department with the permit application. The engineer also reads site changes during the build, and we close up the framing only after the inspector has seen it.
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