Formula Used
The calculator estimates the filled void around an embedded rod. It uses the drilled hole area, rod area, embedment depth, extra bottom pocket, fill percent, waste percent, nozzle loss, and cartridge yield.
Hole area: π × hole diameter² ÷ 4
Rod area: π × rod diameter² ÷ 4
Embedment annular volume: (hole area − rod area) × embedment depth
Extra pocket volume: hole area × extra hole depth
Total required: base volume + waste allowance + nozzle waste
Cartridges: ceiling of base volume with waste ÷ usable cartridge volume
How to Use This Calculator
Enter the number of anchors first. Select inches, millimeters, or centimeters. Add the drilled hole diameter, rod diameter, embedment depth, and extra drilled depth. Then enter the fill target, waste percentage, nozzle waste, cartridge yield, cartridge price, and currency.
Press Calculate to see the result above the form. Use the CSV or PDF buttons to save a job record. Fractions such as 5/8 and 1/2 are accepted for inch based work.
Example Data Table
| Anchors |
Unit |
Hole |
Rod |
Embedment |
Waste |
Cartridge |
Required |
Cartridges |
| 12 |
in |
0.6250 |
0.5000 |
5.0000 |
10.00% |
650.00 mL |
151.04 mL |
1 |
| 30 |
mm |
18.0000 |
16.0000 |
160.0000 |
12.00% |
650.00 mL |
387.62 mL |
1 |
| 48 |
in |
0.8750 |
0.7500 |
7.0000 |
15.00% |
1,650.00 mL |
1,297.13 mL |
1 |
About the Simpson SET-XP Epoxy Calculator
This calculator helps estimate adhesive volume for anchor installation planning. It is built for field checks, material ordering, and quick project review. The method is based on the open space around the installed rod. It also considers extra drilled depth below the rod tip.
Why Epoxy Volume Matters
Too little adhesive can leave voids. Too much adhesive can raise cost and waste. A clear estimate helps crews prepare the right number of cartridges before work starts. It also helps buyers compare job needs against available stock. The calculator separates base volume, waste, nozzle loss, and leftover material. That makes the result easier to audit.
Inputs That Affect Results
Hole diameter has a strong effect. A small increase can raise volume quickly because area uses the diameter squared. Rod diameter also matters. A larger rod leaves less annular space. Embedment depth controls the main filled length. Extra hole depth adds a bottom pocket. Waste percent covers purge, surface loss, imperfect holes, and handling variation. Nozzle waste covers material that stays in the mixing nozzle.
Planning With Cartridge Yield
Cartridge yield is entered in milliliters. The calculator subtracts nozzle waste from each cartridge before counting usable material. It then rounds the cartridge count upward. This avoids short orders. The cost field is optional, but it helps estimate purchase totals. You can enter any currency label.
Best Use
Use this tool before ordering material or preparing installation paperwork. Check the drilled diameter against the specified anchor system. Confirm embedment depth from the project documents. Keep a realistic waste allowance for overhead work, rough holes, cold conditions, or training crews. For final structural acceptance, always follow approved drawings, product instructions, and local code requirements. This page gives a planning estimate, not a substitute for engineering review or official installation guidance.
FAQs
What does this epoxy calculator estimate?
It estimates adhesive volume for drilled holes with embedded rods or rebar. It also estimates waste, nozzle loss, cartridge count, leftover material, and total material cost.
Can I enter fractions?
Yes. The calculator accepts common fractions, such as 5/8, 1/2, and 1 1/4. This is useful when working with inch based anchor sizes.
Why is rod diameter subtracted?
The rod takes up space inside the drilled hole. The calculator subtracts rod volume from hole volume over the embedded length to estimate the adhesive void.
What is extra hole depth?
Extra hole depth is the pocket drilled beyond the embedded rod tip. It is calculated as a full cylinder because the rod does not occupy that space.
What waste percentage should I use?
Use a higher waste percentage for rough holes, overhead work, cold material, long pauses, or inexperienced crews. A lower value may fit controlled repetitive work.
Why does the cartridge count round up?
You cannot normally buy a fraction of a cartridge. The calculator rounds up so the estimated material order is not short.
Is the PDF download a detailed report?
The PDF is a simple job record. It includes core inputs, total required volume, cartridge count, estimated leftover, cost, and the basic formula note.
Does this replace manufacturer instructions?
No. Use it for planning only. Always follow approved installation instructions, project drawings, design documents, inspection rules, and local code requirements.