Caulk / Sealant Cartridge Yield from Joint Size
How many linear feet a sealant cartridge does for a joint size, and the cartridges for a run: length per cartridge = cartridge volume / (width x depth) / 12; cartridges = ceil(joint / length per cartridge). A 10.1 oz cartridge on a 3/8 x 1/4 in joint does 18 ft, so 500 LF takes 28 cartridges; a big 1/2 x 1/2 in joint burns them at more than double the rate (74). The joint cross-section is the lever; the manufacturer's joint design governs.
Formula and source
cross_in2 = joint_width_in x joint_depth_in; lf_per_cart = cartridge_in3 / cross_in2 / 12; cartridges = ceil(joint_lf / lf_per_cart).
Sealant cartridge-yield identity by name (cartridge volume divided by the joint cross-section gives the run per cartridge); first-principles geometry.
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