Commercial Construction in North Hollywood
North Hollywood commercial buildings kept dry from the slab up: vapor retarders, roof drains with overflows, flashed walls and footing drains.
Moisture rising through a slab can loosen flooring adhesive and corrode the base plates of steel columns, so a new North Hollywood commercial slab gets a vapor retarder with a layer of crushed rock below it as a capillary break. Wood sills that bear on that concrete are preservative treated. Around the building, grading and drains carry surface water away from the footings, which keeps the soil that supports them from softening.
Water at the roof and walls
Low-slope commercial roofs are framed or tapered so water reaches drains, with overflow drains or scuppers set slightly higher in case a primary drain clogs. The engineer checks the roof framing for ponding, since standing water adds weight that bends beams further and lets more water collect. At the walls, a water-resistive barrier lapped like shingles, flashing at every opening and sealant joints over backer rod keep rain out of the framing and away from the connections that hold the walls to the roof.
Drainage at the footing and wall base
Where a floor or wall sits below the surrounding grade, the drawings add waterproofing on the soil side and a perforated drain at the footing that empties to an approved outlet. A weep screed or flashing at the bottom of exterior walls lets any water behind the cladding exit above the paving. Downspouts tie into lines that carry water to the street or a dispersal point the city approves. LADBS inspects the drains and waterproofing before backfill covers them, and the drain outlets are left with cleanouts for later service.
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Commercial Construction in North Hollywood: questions
Under the code, special inspection is arranged by the owner, usually through the engineer or architect, and the deputy inspector reports to LADBS. For our part, we schedule it: the inspector is notified when reinforcing, anchors or structural welds are ready, the work stays exposed for viewing, and corrections get made before anything is covered.
In many cases, yes. Structural work is broken into areas, so one section can be closed and protected while trading continues elsewhere. Roof openings get temporary covers ready before they are cut, and exits and accessible routes stay open. Anything that cuts utilities is scheduled outside opening hours.
We prepare a written price from the stamped drawings, organized by division, with waterproofing, drainage and roofing shown as separate lines next to structure and systems. Each allowance is named. Hidden conditions found once work starts, such as a corroded drain line under the slab, are written up and approved before that change proceeds.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.