Shotcrete & Gunite Calculator
Sprayed concrete loses material to rebound. Enter the surface area and thickness to get the in-place volume, what to order, and crew days.
Shotcrete & Gunite Calculator — ConcreteNear.com
| In-place volume | 7.41 yd³ |
| Lost to rebound | 0.82 yd³ |
| Crew days | 1 days |
Cost estimate U.S. average prices
| Shotcrete material 9 yd³ × $200.00 | $1,800 |
| Rig, nozzleman & crew 1 day × $3,500 | $3,500 |
| Estimated total | $5,300 |
- Never reuse rebound — it is weak and full of voids.
- Wet-mix gives a more consistent water-cement ratio and less dust.
| Inputs | |
| Surface area | 600 ft² |
| Average thickness | 4 in |
| Process | Wet-mix shotcrete |
| Rebound loss | 10% |
| Other waste / overspray | 5% |
| Crew output (per day) | 25 yd³ |
Planning estimate only — confirm with your supplier or contractor.
Prices used — edit any price to match your local quote
| Item | Unit price | Basis & source |
|---|---|---|
| Shotcrete / gunite material per yd³ | starting estimate Starting estimate for delivered wet-mix material. | |
| Shotcrete pump & nozzle crew per day | starting estimate Starting estimate for a rig, nozzleman and crew per day. |
How to use this calculator
- Measure the sprayed surface area (pool shell, wall face or slope).
- Enter the average thickness.
- Pick wet or dry process and a rebound percentage.
- Read the order quantity and crew days.
Formulas
In-place yd³ = area × thickness (in) ÷ 12 ÷ 27Order = in-place ÷ (1 − rebound %) × (1 + other waste %)Crew days = order ÷ yards placed per day
Questions
How much rebound is normal?
Rebound depends on process, mix, nozzle work and whether you spray overhead. Wet-mix typically loses less than dry-mix gunite. Use your contractor's number if you have one.
How many yards does a pool take?
Measure the shell area (floor plus walls) and multiply by thickness. A 500 ft² shell at 6 in is about 9.3 yd³ in place before rebound.
Shotcrete or gunite?
Shotcrete usually means wet-mix; gunite is dry-mix with water added at the nozzle. Both make strong, dense concrete with good crews.
Sources & assumptions
Prices checked 2026-11-10. State pricing multiplies national figures by the U.S. Bureau of Economic Analysis regional price parities (goods for materials, services for labor and services). RPPs compare general consumer price levels (U.S. = 100). They are not construction-specific; we use RPP Goods for materials and RPP Services: Other (excludes rents) for labor and services.
Starting estimates No public price series was found for: Shotcrete / gunite material; Shotcrete pump & nozzle crew. These defaults are editable placeholders — replace them with a local quote.
Results are planning estimates, not quotes or engineering advice. Codes, specifications and your supplier's numbers govern.
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