Concrete pieces made in a factory and then shipped to the job site to be assembled — like building blocks for larger structures.
Concrete structural or architectural elements that are cast and cured at a manufacturing plant under controlled conditions before being transported and erected at the construction site. Precast elements include beams, columns, wall panels, hollow-core planks, and architectural cladding. Precasting provides consistent quality, faster field erection, and year-round production capability.
Precast moves a large share of concrete work off the critical path and into a controlled plant, which can compress field schedule and reduce on-site labor exposure—real value an estimator should weigh against higher unit and freight costs. Buyout hinges on long lead times for shop drawings and plant slots, so a late precast award can stall erection and ripple through following trades. Erection access, crane size, and delivery sequencing all carry general-conditions cost the bid must capture.
On a warehouse bid, the estimator prices precast wall panels and asks the supplier for a delivery and erection sequence so the crane and erection crew can be coordinated with the slab and steel, avoiding standby time at the site.
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