San Angelo Concrete Calculator
San Angelo TX
Concrete Calculator — Yards, Bags & West Texas Cost
Calculate cubic yards, bags, and San Angelo-accurate West Texas ready-mix costs for driveways, foundations, patios, retaining walls & more — City of San Angelo permit, registered contractor, caliche soils, ACI 305 dry heat.
$128
Avg San Angelo Ready-Mix (per Cu Yd)
108°F
Peak Summer Temp — Low Humidity ACI 305
3,000
Min PSI — SA TX Exterior Flatwork
0 in.
Frost Depth — West Texas Climate
🚗 Driveway
🏠 Foundation
🛤️ Patio / Slab
🌿 Retaining Wall
🏊 Pool Deck
🏢 Commercial
The San Angelo TX Concrete Calculator estimates cubic yards, bag count, and ready-mix costs for any concrete project in San Angelo, Texas — the county seat of Tom Green County in the Concho Valley of West Texas, with ~100,000 residents at an elevation of ~1,847 ft. West Texas ready-mix pricing runs $118–$138/yd — among the most affordable markets in Texas. Three factors define San Angelo concrete: extreme dry West Texas heat — summer temperatures reach 100–108°F with very low humidity (10–25%), causing far faster surface evaporation than humid cities; concrete can begin drying within 15–20 minutes of placement, making ACI 305 hot-weather practices critical from May through October; caliche and clay soils — San Angelo sits on a mix of caliche (crushed limestone), sandy loam, and expansive clay, with locally abundant caliche serving as excellent base material; and low seismic risk — San Angelo is in a very low seismic zone with no major nearby faults, so structural design focuses on soil bearing rather than seismic concerns. Texas does not require a state contractor license, but contractors must be registered with the City of San Angelo building official. All foundation and structural work requires a Texas-licensed PE. Permits from the City of San Angelo Building Permits & Inspections — (325) 657-4210, 52 W. College Ave.
🌵 San Angelo TX Concrete Calculator
🌵 West TX Pricing · City Permit · Registered Contractor · Caliche Base · ACI 305 Dry Heat · TX PE Structural
San Angelo TX Concrete Calculator
Cubic yards, bags & West Texas ready-mix cost — instant results
🚗 Driveway
🏠 Foundation
🛤️ Patio
🏊 Pool Deck
🏢 Commercial
Enter dimensions to calculate volume, bags needed, and San Angelo TX West Texas material cost.
Driveway: 4–5 in., 3,000–3,500 PSI, #3/#4 rebar at 18 in. OC, 4–6 in. caliche base. City of San Angelo permit — (325) 657-4210. Contractor must register with city building official. ACI 305 May–Oct: pour before 7 AM, low humidity = fast evaporation. No frost.
Sidewalk 3–4 in · Driveway 4–5 in · Pool Deck 4 in · Slab 4 in · Foundation 5–6 in · Footing 12–18 in
Cubic Yards Required
—
Including waste factor
📋 Project Summary
💵 San Angelo TX Cost Estimate
📐 San Angelo TX Driveway / Slab — Annotated Cross-Section
🌵 TX IBC · City Permit · ACI 305
🔥 108°F Peak · Low Humidity — Fast Evaporation
🪨 Caliche / Clay / Limestone — West TX Soils
0 in. Frost · Very Low Seismic Risk
1
SURFACE FINISH — Broom, Stamped, Exposed Aggregate or Colored
Non-slip broom required on driveways · Stamped/colored popular in SA outdoor living · Apply acrylic sealer at 28 days — West TX UV, heat, and caliche dust protection essential · Cure immediately with curing compound — low humidity causes rapid surface drying
2
CONCRETE SLAB — 3,000 PSI Flatwork / 4,000 PSI Structural
Standard flatwork: #3/#4 rebar @ 18 in. OC · Control joints @ 8–10 ft · W/C ≤ 0.50
ACI 305 REQUIRED May–Oct: pour before 7 AM, chilled water, evaporation retarder (Confilm), curing compound immediately
Low humidity (10–25%): concrete surface dries 2–3× faster than humid TX cities — this is West TX’s #1 pour-day risk
10-mil poly vapor barrier under all interior slabs
3
REBAR / WWF — ASTM A615 Grade 60 · TX IBC Standard
Min. 1.5–2 in. cover · Chairs required · TX PE design for structural work · Low seismic risk — no special seismic hooks required for standard flatwork (unlike CA SDC D)
4
CALICHE BASE — 4–6 in. Compacted (West TX Standard)
San Angelo’s locally abundant caliche (crushed limestone/calcium carbonate hardpan) · Excellent, stable subbase material · Compacted ≥ 95% Standard Proctor · Pre-wet dry caliche base before pour in hot/dry weather to prevent moisture loss from fresh concrete
5
CLAY / SANDY LOAM — Concho Valley Mixed Soils
Tom Green County: mix of caliche hardpan, clay-loam, and sandy loam · Some expansive clay in lower-lying areas
Generally better bearing than San Antonio’s pure black clay · TX PE soil investigation recommended for structural foundations
Pre-wet any clay subgrade 24 hrs before pour · Concho River floodplain areas: check for soft alluvial deposits
6
PERMIAN LIMESTONE / CRETACEOUS BEDROCK
San Angelo: Permian Basin limestone and Cretaceous formations at varying depths · Generally very good bearing capacity · Shallow rock common on elevated terrain — TX PE foundation depth by soil bearing, not frost · Very low seismic zone
½ in.Finish
4–5 in.Slab
~1 in.Rebar
4–6 in.Caliche
VariesClay/Loam
VariesBedrock
27Cu ft per cu yd
4580 lb bags per cu yd
$128Avg San Angelo ready-mix / yd
LowSeismic risk — Permian Basin, no major faults
1 Surface Finish
2 Concrete Slab
3 Rebar / WWF
4 Caliche Base
5 Clay / Sandy Loam
6 Permian Limestone
San Angelo TX Concrete — Key Facts
San Angelo’s concrete market is defined by its West Texas location in the Concho Valley — a region of Permian Basin limestone, locally abundant caliche, and a hot, dry semi-arid climate. Unlike coastal or humid Texas cities, San Angelo’s very low humidity (10–25% in summer) is concrete’s biggest enemy: surface moisture evaporates 2–3 times faster than in Houston or San Antonio, making plastic shrinkage cracking a constant summer risk. All contractors must be registered with the City of San Angelo building official at 52 W. College Ave. before pulling permits. Building permits from City of San Angelo Building Permits & Inspections — (325) 657-4210.
🌵 San Angelo TX Minimum Concrete Requirements — Texas IBC / IRC
Driveways / flatwork: 3,000 PSI min, #3/#4 rebar, 4–5 in. thick, 4–6 in. compacted caliche base, W/C ≤ 0.50 · Structural foundations: 4,000 PSI min, TX-licensed PE design, 10-mil poly vapor barrier mandatory · ACI 305 (May–Oct, above 85°F): pour before 7 AM, chilled mix water (+$5–$10/yd), evaporation retarder (Confilm) applied immediately during finishing, curing compound applied immediately after texturing — West TX low humidity makes these steps life-or-death for slab quality · Retaining walls over 30 in.: city permit required; over 4 ft requires TX-licensed PE design · Contractor registration: any person providing work that requires a permit must be registered with the City of San Angelo building official — (325) 657-4210, 52 W. College Ave.
🔥 West TX Dry Heat — ACI 305 Critical
San Angelo’s semi-arid climate is uniquely challenging for concrete. Summer temperatures reach 100–108°F, but it is the low relative humidity (often 10–25%) — not just the heat — that makes West Texas so dangerous for fresh concrete. Evaporation rate is a function of both temperature and humidity; at 105°F and 15% humidity, the ACI 305 evaporation rate can exceed 0.35 lb/ft²/hr — well above the 0.20 lb/ft²/hr threshold where plastic shrinkage cracking becomes nearly certain. This is 2–3 times worse than a humid Houston day at the same temperature. Required ACI 305 practices for all SA summer pours: batch and pour before 7 AM; request chilled mix water; apply Confilm evaporation retarder on any exposed concrete surface the moment screeding begins; never leave fresh concrete exposed to sun or wind; apply curing compound immediately; and keep surface moist for 7 days with wet burlap or plastic sheeting.
🪨 Caliche — West TX’s Best Base Material
San Angelo is located in one of Texas’s richest caliche regions. Caliche — a naturally occurring hardpan of calcium carbonate cemented soil — is abundant throughout Tom Green County and is the preferred subbase material for concrete in West Texas. Unlike the pure clay soils of San Antonio or Houston, San Angelo’s caliche provides excellent bearing capacity (2,500–4,000 psf), drains well, and does not expand when wet. Standard practice is a 4–6 inch compacted caliche base below all slabs and driveways, compacted to 95% Standard Proctor. Important: in dry West TX summers, pre-wet the caliche base before the pour — dry caliche will absorb moisture from fresh concrete, weakening the mix near the base. Locally sourced caliche in San Angelo typically costs $0.60–$1.10/sq ft for 4–6 in. compacted — less than comparable base in most TX cities.
💰 West Texas Affordable Pricing
San Angelo is one of the most affordable concrete markets in Texas. Ready-mix runs $118–$138/yd at standard PSI grades — below both San Antonio and the major DFW market. This reflects lower West Texas population density, lower labor costs, proximity to Permian Basin aggregate sources, and locally abundant caliche reducing base material costs. Labor for flatwork runs $3.00–$5.50/sq ft installed. Short-load fees ($70–$130) apply for orders under 3–5 yards. Local San Angelo suppliers serve the market competitively; early-morning delivery availability (critical for ACI 305 summer pours) should be confirmed when booking. Caliche base material is inexpensive and locally sourced — the West Texas advantage.
Concrete Volume Formula — San Angelo TX
📐 San Angelo TX Concrete Formula
Volume (cu ft) = Length (ft) × Width (ft) × [Depth (in) ÷ 12]
Volume (cu yd) = Volume (cu ft) ÷ 27
Order Qty = CEIL[ Volume (cu yd) × Waste Factor ]
Example: 16×22 ft driveway × 4.5 in = 132 cu ft = 4.89 cu yd → Order 5.5 cu yd
Example: 20×40 ft foundation × 5 in = 333 cu ft = 12.35 cu yd → Order 13.5 cu yd
⚠️ West TX Low Humidity Warning — Apply Evaporation Retarder Immediately
San Angelo’s low humidity (10–25%) is the most underestimated concrete risk in West Texas. At 105°F and 20% humidity, fresh concrete can lose surface moisture fast enough to cause plastic shrinkage cracking within 20–30 minutes of placement — even before you finish screeding. Required practices for all SA summer pours: apply Confilm or similar evaporation retarder mist immediately after screeding, before any finishing begins; never use a fan, do not allow wind to hit fresh concrete without a windbreak; apply curing compound (sprayed) the instant final broom/trowel finishing is complete; cover with wet burlap or plastic sheeting for 7 days minimum; and pre-wet the caliche base 2–4 hours before the pour. For structural pours, also request chilled mix water or partial ice substitution from the plant (+$5–$10/yd). Contact City of San Angelo Building Permits at (325) 657-4210 for permit requirements.
San Angelo TX Concrete Pricing
| Mix / PSI | San Angelo TX Price / Cu Yd | National Avg | Best For | TX Spec | TX Code |
|---|---|---|---|---|---|
| 3,000 PSI — TX Standard | $118–$128 | $143–$158 | Driveways, walkways, patios | #3/#4 Rebar | Compliant |
| 3,500 PSI — Pool / Outdoor | $124–$133 | $153–$166 | Pool decks, outdoor slabs | #3/#4 Rebar | Compliant |
| 4,000 PSI — Structural Foundation | $129–$138 | $161–$173 | Foundations (TX PE required) | TX PE Design | Compliant |
| 4,500 PSI — Commercial | $135–$145 | $171–$181 | Commercial structural | TX PE + Inspection | Compliant |
| 5,000 PSI — High Strength | $141–$153 | $178–$193 | Industrial / high-load commercial | Engineer Spec | Compliant |
| Summer Chilled Water (May–Oct) | +$5–$10/yd | +$5–$10/yd | All pours above 85°F | ACI 305 Required | Best Practice |
3,000 PSI — Standard (Driveways / Patios)
San Angelo Price$118–$128/yd
TX CodeCompliant
4,000 PSI — Structural Foundation
San Angelo Price$129–$138/yd
TX SpecTX PE Design Required
Summer Chilled Water — May–Oct
Add-On Price+$5–$10/yd
StandardACI 305 Required
✅ San Angelo TX Pro Tip — Register · ACI 305 · Caliche Base · Cure Immediately
(1) Contractor must register with City of San Angelo building official before pulling any permit — (325) 657-4210, 52 W. College Ave.; (2) ACI 305 dry-heat pour discipline is non-negotiable May–Oct — pour before 7 AM, chilled water, evaporation retarder on fresh surface immediately, curing compound the instant finishing is done; (3) Use compacted caliche base (4–6 in.) and pre-wet it before pour to prevent moisture loss from the fresh mix; and (4) TX-licensed PE for all structural and foundation work — verify at tbpe.texas.gov. Permits at City of San Angelo (325) 657-4210 · 52 W. College Ave.
San Angelo TX Bag Count Quick Reference
| 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 |
| Foundation Slab | 30×40 ft × 5 in. | 18.52 yd | 834 bags | Ready-Mix + TX PE Required |
| Fence Post (each) | 8 in. dia × 18 in. | 0.03 yd | 1–2 bags | Bags Ideal / Mix in shade |
Standard Driveway — 16×22 ft × 4.5 in.
Cubic Yards4.89 yd
80 lb Bags220 bags
Ready-Mix Required
Foundation Slab — 30×40 ft × 5 in.
Cubic Yards18.52 yd
80 lb Bags834 bags
Ready-Mix + TX PE Required
San Angelo TX — Frequently Asked Questions
How much does concrete cost in San Angelo, TX?+
San Angelo West Texas ready-mix runs $118–$153/yd — among the lowest-priced markets in Texas. A 16×22 ft driveway installed typically costs $2,500–$6,500. Labor runs $3.00–$5.50/sq ft for standard broom finish. Summer chilled water add-on (+$5–$10/yd) applies May–October. Locally sourced caliche base is inexpensive — typically $0.60–$1.10/sq ft for 4–6 in. compacted. Contractor must be registered with the city building official. Permits at City of San Angelo (325) 657-4210.
Do I need a permit for concrete in San Angelo, TX?+
Yes — the City of San Angelo Building Permits & Inspections requires permits for driveways, foundations, patios over threshold size, retaining walls over 30 in., and commercial concrete. Contact the Permits Division at (325) 657-4210, 52 W. College Ave., or visit sanangelo.gov. Applications are submitted by email — see the forms page for residential and commercial checklists. Importantly, any contractor pulling a permit must first be registered with the city building official — registration form available at sanangelo.gov/registered-contractors.
Why is ACI 305 so important in San Angelo?+
San Angelo combines extreme heat (100–108°F) with very low humidity (10–25%) — a uniquely hostile environment for fresh concrete. Low humidity dramatically accelerates surface evaporation compared to humid cities. At 105°F / 15% RH, the ACI 305 evaporation rate exceeds 0.35 lb/ft²/hr — nearly double the 0.20 threshold. This causes plastic shrinkage cracking within 20–30 minutes. Required practices: pour before 7 AM; request chilled water; apply Confilm evaporation retarder immediately after screeding; apply curing compound immediately after final finishing; and cure with wet burlap or plastic for 7 days. Never pour concrete in direct West TX sun above 95°F without windbreak and shade.
What is the frost depth for San Angelo, TX?+
San Angelo has an effective frost depth of zero at its 1,847 ft elevation. Hard ground freezing essentially never occurs — winter lows average 30–40°F, and while occasional sub-freezing events happen (including rare winter storms), ground freezing to any meaningful depth is not a design factor. Footing depth is determined by soil bearing capacity and local code minimums per TX IBC. Cold-weather concrete practices (ACI 306) should be applied on any pour day when temperatures approach 35–40°F, which can occur in December–February.
How many cubic yards for a San Angelo driveway or foundation?+
Use: (L × W × depth ÷ 12) ÷ 27 × 1.10. A 16×22 ft driveway at 4.5 in = 4.89 yd → order 5.5 yd. A 20×22 ft garage slab at 4 in = 5.43 yd → order 6.0 yd. A 20×30 ft pool deck at 4 in = 7.41 yd → order 8.0 yd. A 30×40 ft foundation at 5 in = 18.52 yd → order 20.5 yd. Use our San Angelo TX Concrete Calculator above for instant West Texas-accurate estimates.
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San Angelo TX Concrete Resources
Official references for San Angelo, Texas concrete projects
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City of San Angelo Permits
Permits, Inspections & Contractor Reg.
Apply for building permits, register as a contractor, and schedule concrete inspections (foundation, slab, final) through the City of San Angelo Building Permits & Inspections Division — (325) 657-4210, 52 W. College Ave., San Angelo TX 76903. All applications submitted by email. Any contractor performing permitted work must first register with the building official. Residential and commercial permit application checklists available at sanangelo.gov/forms.
TX Board of PE — Engineer Lookup
TX PE License Verification
All San Angelo foundation, structural concrete, and retaining wall work over 4 ft requires a Texas-licensed Professional Engineer (PE). Verify your engineer’s current active license and good standing before engaging for design. Texas does not require a state contractor license for concrete work, but contractors must register with the City of San Angelo building official. Verify TX PE license at tbpe.texas.gov before signing any structural concrete contract.
NOAA Weather — San Angelo TX
ACI 305 Pour Day Planning
Check the 10-day San Angelo TX forecast before every pour — and critically, check the relative humidity forecast, not just the temperature. Target pour days below 85°F with humidity above 40% for standard practice. Apply full ACI 305 hot-weather procedures above 85°F (virtually all SA days May–Oct). West TX’s 10–25% summer humidity makes evaporation retarder mandatory even on “cooler” 90°F days. Schedule delivery for 5–6 AM batching to pour before 7 AM in summer months.