SettingsSettings for this calculationUS
The standard allowance most suppliers and estimating guides assume for ordinary work.
The sum of all construction/expansion joint lengths requiring a waterstop seal.
Add up every wall-to-footing, wall-to-wall, and slab joint length in the below-grade structure.
Extra material for splices, corners, and cuts.
Waterstop needs continuous, properly heat-welded or overlapped splices at every joint intersection and corner, which consumes extra material.
Waterstop needed
182 linear ft
Corners and T-intersections need factory or field-fabricated waterstop fittings, which use more material than a straight run — increase the waste factor for joint layouts with many corners.
- Base joint length (no waste)
- 165 ft
They open the calculator with your figures already in it
Waterstop Linear Footage Calculator: 182 linear ft — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- Waterstop is installed continuously along the full length of every construction or expansion joint requiring a water seal
Inputs used
- Total Joint Length
- 165 ft
- Waste Factor (%)
- 10
Intermediate steps
- Base joint length (no waste)
- 165 ft
Confidence note: Corners and T-intersections need factory or field-fabricated waterstop fittings, which use more material than a straight run — increase the waste factor for joint layouts with many corners.
What this calculation does not cover
- This returns a length, not a specification. Waterstop width, profile — flat dumbbell, centerbulb, ribbed, hydrophilic — and material are selected from hydrostatic head, expected joint movement and chemical exposure, and none of those are inputs here.
- Prefabricated corner, tee and cross fittings are not counted. Those are ordered as individual pieces off the joint layout rather than as linear stock, and the waste percentage pads the straight run instead of producing a fitting schedule.
- The figure is a raw length, not a coil count. Waterstop ships in fixed-length rolls, and the offcuts left where a roll does not divide evenly into a joint run are not modelled — the waste factor is a flat percentage, not a per-splice or per-roll calculation.
- It does not decide which joints need a seal. You supply the total; water table depth, hydrostatic head and the project's waterproofing design determine which construction and expansion joints require waterstop, and this take-off is not a substitute for that design.
- Nothing beyond the waterstop itself is included. Hydrophilic strips, injectable hose, joint sealant, bond breakers, split formwork, and the hog rings or tie wire that hold the waterstop centred and upright during the pour are all separate items.
Estimated cost — your price
This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-09-02 · in the site-wide review of 2026-09-06 · v1.0.1
Regulatory standards & verification citations1
- Waterstop is installed continuously along the full length of every construction or expansion joint requiring a water seal
Cite this page
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