Parking bollard concrete workflow
Concrete Bollard Calculator: Hole Volume, Pipe Fill & Quote Scope
Answer first: calculate the concrete inside the footing hole and the optional pipe fill, then multiply by bollard count and waste. Use the result to compare bags, mini-mix, ready-mix, and the installed quote lines that can hide layout, drilling, traffic, patching, and cleanup.
4 in pipe, 12 in hole
about 0.11 yd3 each
A 10-bollard batch screens around 1.21 yd3 with 10% waste when the pipe is filled.
6 in pipe, 18 in hole
about 0.32 yd3 each
A 10-bollard batch screens around 3.52 yd3 with 10% waste before delivery and placement checks.
Surface mounted
separate from footing volume
Use anchor, slab condition, edge distance, and protection goal checks before comparing price.
Hole volume, pipe fill, batch yards, and bag count
Estimate concrete for embedded steel pipe bollards by separating the footing hole from the optional pipe fill. Use the batch result to decide whether bags, mini-mix, or ready-mix belongs in the quote.
Buying-path screen
Price a ready-mix or small-load option before committing to bags.
Hole concrete
7.07 ft3
Cylinder volume for the excavated or drilled footing.
Pipe fill
1.57 ft3
Optional fill inside the pipe or sleeve.
Per bollard
0.32 yd3
Hole plus pipe fill before multiplying the count.
Batch order
3.52 yd3
Bollard count with the selected waste buffer.
Quote checks to keep visible
- Separate surface-mounted, core-drilled, embedded, and removable scopes.
- Ask whether concrete fills the footing only, the pipe only, or both.
- Keep utility locating, traffic control, slurry, patching, and cleanup as separate rows.
- Use engineered specifications for crash-rated or life-safety bollards.
80 lb bag screen
159 bags
Uses the editable bag yield, not a fixed product claim.
| Planning case | Per bollard | 10 bollards with waste | Quote question |
|---|---|---|---|
| 4 in pipe, 12 in hole, 36 in deep | about 0.11 yd3 | about 1.21 yd3 | Is this a light embedded bollard, and will the pipe also be filled? |
| 6 in pipe, 18 in hole, 48 in deep | about 0.32 yd3 | about 3.52 yd3 | Does the quote include two pours, traffic control, patching, and cleanup? |
| Surface-mounted bollard | usually no new footing volume | confirm anchors and slab condition | Is the existing slab thick, sound, and approved for the expected use? |
| Crash-rated bollard | engineered system required | do not use a generic calculator | Which tested system, foundation detail, inspection, and rating apply? |
Interactive workflow
Run the numbers, then save or export the project
Save this estimate or download a PDF report
The PDF report uses the current calculated result. Save the estimate first when you want to reuse the inputs later.
What generic cylinder calculators miss
A bollard project is not just a post hole. The concrete quantity only becomes useful when mounting method, pipe fill, batch size, access, traffic, and installed scope are visible beside it.
| Benchmark says | Replace with local input | Next check |
|---|---|---|
| Round hole volume | Keep footing diameter, footing depth, and optional pipe fill as separate inputs so the bidder cannot hide the material basis. | Ask whether the quote fills the footing only, the pipe only, or both. |
| One installed price | Separate surface-mounted, core-drilled, embedded, removable, and crash-rated systems before comparing per-bollard cost. | Reject price comparisons that mix mounting methods or protection goals. |
| Bag count only | A 10-bollard batch can move from a baggable material estimate into a small-load delivery, staging, or two-pour decision. | Check delivery minimums, short-load fees, access, crew timing, and cleanup. |
| Generic protection claim | Crash-rated and life-safety bollards need tested or engineered systems, not a generic concrete volume answer. | Use the manufacturer detail, engineer, inspector, or authority having jurisdiction for safety specifications. |
Bollard installation quote checklist
Use these checks before approving a material-only concrete number or a per-bollard installed price.
| Signal to check | What it means | Next step |
|---|---|---|
| Mounting method | Surface-mounted, core-drilled, embedded, removable sleeve, and crash-rated bollards price different work. | Name the method in the scope before comparing the per-bollard number. |
| Hole and pipe fill | The concrete quantity changes when the pipe or sleeve is filled in addition to the footing hole. | Record footing diameter, footing depth, pipe inside diameter, filled height, count, and waste. |
| Existing surface | Asphalt, slab thickness, rebar conflicts, edge distance, slurry, spoils, and patch finish can dominate retrofit work. | Ask how cutting, drilling, patching, and disposal are priced. |
| Buying path | A few bollards may be bagged, while a larger batch can trigger truck minimums, short-load fees, placement timing, or two pours. | Compare bags, mini-mix, ready-mix, delivery, wait time, and washout. |
| Access and traffic | Cones, lane closure, pedestrian routing, business hours, staging, and protected surfaces can change labor and schedule. | Keep access, traffic control, cleanup, and downtime as written quote rows. |
| Safety boundary | A material calculator does not specify crash rating, storefront protection, fuel-island protection, spacing, reinforcement, or code compliance. | Use project specifications and qualified local review for engineered or life-safety use. |
Related concrete planning tools
Move from a single calculation into a purchase, proposal, or pour-day decision with connected calculators and checklists.
How do I calculate concrete for a bollard?
Calculate the footing hole as a cylinder: pi times radius squared times depth. If the steel pipe or sleeve will also be filled, calculate that cylinder separately, add it to the hole volume, multiply by bollard count, and add waste.
How much concrete is needed for a 6 inch pipe bollard?
A common planning example is a 6 inch pipe in an 18 inch diameter hole, 48 inches deep, with the pipe filled about 8 feet high. That screens around 0.32 cubic yards per bollard before project-specific changes.
How many 80 lb bags are needed for 10 bollards?
Using the 6 inch pipe, 18 inch hole, 48 inch depth example with pipe fill and 10% waste, 10 bollards screen around 3.52 cubic yards. At 0.60 cubic feet per 80 lb bag, that is about 159 bags, so ready-mix or mini-mix should be priced.
Is a bollard calculator the same as a post-hole calculator?
No. A post-hole calculator covers round hole volume for posts. A bollard calculator also separates pipe fill, mounting method, count, installed scope, traffic, patching, cleanup, and the boundary for engineered or crash-rated systems.
Should surface-mounted bollards use this concrete calculator?
Surface-mounted bollards often do not need a new footing volume, but the slab condition, anchor specification, edge distance, and intended protection still need review. Use this page mainly when a footing, core, sleeve, or embedded pipe is part of the scope.
Can this calculator design crash-rated bollards?
No. It is only a planning and quote-review calculator. Crash-rated, storefront-protection, public-safety, and fuel-island bollards need tested or engineered systems, manufacturer instructions, local requirements, and qualified review.
Why does the installed bollard price differ from concrete cost?
The installed price can include layout, utility locating, cutting, core drilling or excavation, steel pipe, sleeves, covers, traffic control, patching, cleanup, mobilization, overhead, and warranty limits. Concrete is often only one line.
What should I ask before approving a bollard quote?
Ask for count, spacing, mounting method, hole diameter, depth, pipe fill, concrete source, surface removal, traffic plan, patching, cleanup, exclusions, and who is responsible for utility locating and local approvals.
Planning disclaimer
This concrete bollard calculator is for early material planning and quote review only. It does not design impact protection, specify bollard spacing, replace manufacturer instructions, replace engineering, satisfy permits, or confirm local code, inspection, utility, traffic, or safety requirements.