Adhesive-Anchor Epoxy Cartridge Volume
The epoxy to set adhesive anchors - the annular volume per hole and the cartridges.
Example
You enter
- Number of anchors (count) 40
- Drilled hole diameter (in) 0.75
- Anchor / rebar diameter (in) 0.625
- Embedment depth (in) 6
- Cartridge volume (in³) 15.3
- Nozzle-purge waste (percent) 10
You get
- Per hole (in³) 0.81
- Total (in³) 35.6
- Epoxy cartridges 3
No published worked example is on file for this calculation. It is checked against a hand-worked derivation of its method and an independent reference test.
Details, formula, and sources
ScopePer hole = pi/4 x (hole^2 - bar^2) x embedment; cartridges = ceil(holes x per hole x (1 + waste) / cartridge volume). 40 holes of a 5/8 in bar in a 3/4 in hole at 6 in embedment is 0.81 in^3 each - about 3 cartridges with waste; a deeper 9 in embedment runs it to 4. The hole diameter comes from the adhesive manufacturer's instructions; distinct from the concrete-anchor capacity calcs.
Formula or tableper_hole_in3 = (PI/4) x (hole_dia_in^2 - bar_dia_in^2) x embed_in; total_in3 = holes x per_hole_in3 x (1 + waste_pct/100); cartridges = ceil(total_in3 / cartridge_in3).
Source and editionAdhesive-anchor epoxy-volume identity by name (annular fill per hole, times the holes, over the cartridge volume); first-principles geometry.
Free accessThe annular-volume geometry is public first-principles; the hole diameter comes from the adhesive manufacturer's printed installation instructions.
What governsEstimate. AHJ and licensed professional govern.
API field namesholes, hole_dia_in, bar_dia_in, embed_in, cartridge_in3, waste_pct, per_hole_in3, total_in3, cartridges
- Hole diameter from the adhesive manufacturer's MPII, oversized relative to the bar (e.g. 3/4 in hole for a 5/8 in bar)adhesive manufacturer MPII
- Waste ~10% for the mixing-nozzle purge at each cartridge startinstallation practice