Calculate cubic yards, bags, and San Bernardino-accurate Inland Empire ready-mix costs for driveways, foundations, patios, retaining walls & more — CA Building Code compliant, CSLB licensed, Building Safety permit.
Enter dimensions to calculate volume, bags needed, and San Bernardino CA Inland Empire material cost.
Driveway: 4–5 in., 3,000–3,500 PSI, #3/#4 rebar at 18 in. OC, 6 in. Class 2 base, W/C ≤ 0.50. SB Building Safety permit — (909) 384-5071. CSLB B or C-8 mandatory. SDC D — San Andreas Fault ~10 mi north. ACI 305: pour before 7 AM May–Oct. No frost.
Sidewalk 3–4 in · Driveway 4–5 in · Pool Deck 4 in · Slab 4 in · Foundation 5–6 in · Footing 12–24 in
San Bernardino sits at the eastern end of the Inland Empire valley, backed by the San Bernardino Mountains to the north and flanked by two of California's most dangerous fault systems. The San Andreas Fault runs through the Cajon Pass just 10 miles north — capable of a scenario earthquake up to M7.8 on the Southern San Andreas segment. The San Jacinto Fault passes through the eastern suburbs. All structural concrete is subject to SDC D requirements under the 2022 CBC. Permits are issued by the City of San Bernardino Building & Safety Division — (909) 384-5071.
Driveways / flatwork: 3,000 PSI min, #3/#4 rebar, 4–5 in. thick, 6 in. Class 2 base, W/C ≤ 0.50 · Seismic foundations (SDC D): 4,000 PSI min, CA-licensed SE/PE design, no plain structural concrete, special inspection, compaction report + pad certification · Alquist-Priolo Zone: fault investigation required before permit on sites within 50 ft of active fault trace — CA-licensed GE required · ACI 305 hot weather (May–Oct): pour before 7 AM, chilled mix water, evaporation retarder, curing compound immediately — IE summer temperatures 105–115°F make this a concrete strength requirement, not optional. Contact SB Building Safety at (909) 384-5071.
The Southern San Andreas Fault at Cajon Pass (~10 miles north of downtown San Bernardino) is considered by USGS to be one of the most overdue fault segments in California — capable of a magnitude 7.8+ rupture ("ShakeOut Scenario") that would produce MMI IX+ shaking in San Bernardino Valley. The Alquist-Priolo Earthquake Fault Zone Act requires a CA-licensed geotechnical engineer fault investigation before building permits can be issued for structures on sites within 50 feet of an active fault trace. All structural concrete in San Bernardino requires 4,000 PSI min, CA-licensed SE/PE design, compaction report, pad certification, and special inspection during pour.
San Bernardino's inland valley location produces some of the most extreme summer heat of any urban area in California — temperatures regularly reach 105–115°F from June through September. At these temperatures, concrete begins to stiffen within 20–30 minutes of batching, hot aggregate and air temperatures accelerate hydration, and plastic shrinkage cracking becomes nearly certain without precautions. ACI 305 hot-weather concrete practices are mandatory for all San Bernardino summer pours: schedule pour before 7 AM; request chilled mix water from the plant (+$6–$12/yd); apply evaporation retarder (e.g., Confilm) during finishing; apply curing compound immediately after texturing; and cover with wet burlap for 7 days. Never pour concrete in direct sun above 95°F without a windbreak and shade canopy.
San Bernardino County's Inland Empire is one of California's most affordable concrete markets — ready-mix prices run $152–$172/yd, compared to $178–$210/yd in coastal Bay Area markets. This reflects lower IE labor costs, no coastal urban density premiums, and proximity to aggregate sources in the San Bernardino Mountains and Mojave Desert. Multiple ready-mix plants in the IE — including Cemex, U.S. Concrete, and independent suppliers — serve the San Bernardino market with relatively short delivery distances. Short-load fees ($85–$150) apply for orders under 3–5 yards. IE labor for flatwork runs $4.00–$7.00/sq ft installed — significantly below coastal CA rates.
San Bernardino's Inland Empire summers are the most challenging concrete environment in California. At 105–115°F ambient temperature, fresh concrete can lose 3–5 inches of slump in transit from the plant and become unfinishable within 30 minutes of discharge. Required ACI 305 practices: schedule all pours before 7 AM (start mix plant batching at 5–6 AM); request chilled mix water or partial ice substitution (+$6–$12/yd); keep aggregates shaded at the pour site; apply Confilm evaporation retarder immediately after screeding; apply curing compound the moment final troweling is complete; keep burlap wet for 7 days. Also: never wash down a San Bernardino summer slab with water to make finishing easier — this causes dusting and surface weakness. Contact SB Building Safety at (909) 384-5071 for permit requirements.
| Mix / PSI | San Bernardino CA Price / Cu Yd | National Avg | Best For | Seismic Spec | CBC Code |
|---|---|---|---|---|---|
| 3,000 PSI — CA Standard | $152–$163 | $143–$158 | Driveways, walkways, patios | #3/#4 Rebar | Compliant |
| 3,500 PSI — Pool / Outdoor | $157–$168 | $153–$166 | Pool decks, outdoor slabs | #3/#4 Rebar | Compliant |
| 4,000 PSI — Seismic Foundation | $163–$175 | $161–$173 | Structural foundations (SDC D) | SE/PE + Compaction Rpt | Compliant |
| 4,500 PSI — Commercial | $170–$183 | $171–$181 | Commercial / industrial slabs | Special Inspection | Compliant |
| 5,000 PSI — High Strength | $178–$195 | $178–$193 | Tilt-up / warehouse / industrial | Engineer Spec | Compliant |
| Hot-Weather Chilled Water (May–Oct) | +$6–$12/yd | +$5–$10/yd | All IE summer pours above 85°F | ACI 305 Required | Mandatory |
(1) CA-licensed SE or PE for all structural work — no plain structural concrete in SDC D; San Andreas Fault scenario M7.8 makes this life-safety critical; (2) Compaction report + pad certification required for all SDC D projects per SB County plan check — arrange geotechnical engineer early; (3) Alquist-Priolo fault investigation if your site is near Cajon Pass or mapped fault traces; and (4) ACI 305 hot-weather pour schedule — before 7 AM, chilled water, evaporation retarder, immediate curing compound for all IE summer pours. Verify CSLB at cslb.ca.gov · Permits at SB Building Safety (909) 384-5071.
| Project | Dimensions | Cu Yards | 80 lb Bags | Recommendation |
|---|---|---|---|---|
| Small Patio | 10×12 ft × 4 in. | 1.48 yd | 67 bags | Bags OK / Mix before 7 AM |
| Standard Driveway | 16×22 ft × 4.5 in. | 4.89 yd | 220 bags | Ready-Mix Required |
| Garage / Rear Slab | 20×22 ft × 4 in. | 5.43 yd | 245 bags | Ready-Mix Required |
| Pool Deck | 20×30 ft × 4 in. | 7.41 yd | 334 bags | Ready-Mix Required |
| Seismic Foundation | 20×40 ft × 5 in. | 12.35 yd | 556 bags | Ready-Mix Required |
| Fence Post (each) | 8 in. dia × 18 in. | 0.03 yd | 1–2 bags | Bags Ideal |
Official references for San Bernardino, California concrete projects
Apply for building permits, schedule concrete inspections (footing/rebar, underslab, final), and verify 2022 CBC seismic requirements. City of San Bernardino Building & Safety Division — (909) 384-5071. SDC D structural permits require CA-licensed SE/PE plans, compaction report, and pad certification. Schedule rebar inspection before any structural pour — inspectors must sign off before concrete is placed.
Visit SB Building SafetyVerify your San Bernardino contractor holds an active CSLB Class B (General Building) or C-8 (Concrete) license before signing any contract. For SDC D structural and foundation work, also require a CA-licensed SE or PE. Confirm active general liability and workers' compensation insurance. Unlicensed contractors cannot pull SB Building Safety permits or pass required compaction report / special inspection requirements.
Search CSLB LicensesCheck the 10-day San Bernardino CA forecast before every pour. Target days below 85°F for standard practice — apply full ACI 305 hot-weather procedures for any pour when temperature exceeds 85°F (virtually all IE summer days). Schedule concrete delivery for 5–6 AM batching to achieve pour start before 7 AM. Never pour in direct sun above 95°F without windbreak and shade canopy. IE winters (Dec–Feb) are mild — no frost risk at valley floor elevation.
Check SB CA Forecast