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Pumped vs. Truck-Poured Concrete for a Large Backyard Slab

A homeowner in the California foothills is planning a 46-cubic-yard, 3,150-square-foot concrete slab for an RV pad. The site accommodates ready-mix trucks, but some advisors recommend pumping. The soil is extremely hard.

Truck Access vs. Pumping

If trucks can maneuver to the pour location without damaging the site, direct discharge is fine and saves roughly $500. Pumping adds cost but minimizes yard disruption on soft ground.

RV Slab Specifications

Premium option: 5–6 inches of 3,000 psi concrete with fiber reinforcement plus #3 rebar at 12 inches on center each way, tied at intersections. Cut control joints 1 inch deep every 10 feet in both directions within 12–24 hours of finishing.

Economy option: 4–5 inches of 3,000 psi fiber-reinforced concrete with 6×6 welded wire fabric. Acceptable if minor cracking isn't a concern.

Given the RV load and hard subgrade, the premium specification is strongly recommended.

— Best of Luck

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