Field reference / sourced data

Construction calculator planning defaults

Review editable starting values for waste, layer depths, package coverage, paint coats, and other construction quantity inputs. Values support planning estimates; check the current product sheet and local code before purchase or construction.

Construction calculator planning defaults
Datum	Value	Unit	Source edition	Notes
genericLengthFt	10	ft	General material planning default
genericWidthFt	10	ft	General material planning default
genericDepthIn	4	in	General material planning default
genericHeightFt	8	ft	General wall planning default
genericCoverageFt2	1	ft²/unit	Generic quantity fallback
quantityCount	1	items	General quantity default
wastePercent	10	%	Phase 1 planning defaults	Edit this allowance for the material, layout, and site conditions.
framingWastePercent	10	%	Phase 1 framing planning defaults
rebarEdgeCoverIn	2	in	Preliminary slab-grid assumption	Confirm cover with the project plans and local code.
deckBoardGapIn	0.125	in	Nominal 1/8 in deck-board gap
roofingBundlesPerSquare	3	bundles/square	Typical three-tab/asphalt shingle package planning	Verify the bundle coverage printed on the selected product.
aggregateDepthIn	3	in	Landscape material planning default	Edit for the specified installed layer depth.
drivewayDepthIn	6	in	Driveway aggregate planning default	Use the compacted layer depth from the project specification.
mulchDepthIn	3	in	Mulch planning default	Mulch settles; confirm the desired installed depth.
topsoilDepthIn	2	in	Topsoil planning default	Confirm depth against the grading or sod specification.
sandDepthIn	1	in	Bedding sand planning default	Use the paver or hardscape specification for final depth.
paverBaseDepthIn	4	in	Paver base planning default	Base depth depends on soil, climate, drainage, and loading.
paverSandDepthIn	1	in	Paver bedding planning default	Do not use this as a compaction or installation specification.
sodCoverageFt2	450	ft²/pallet	Sod package planning default	Use the coverage printed on the supplier's pallet or roll.
tileBoxCoverageFt2	15	ft²/box	Tile package planning default	Tile boxes vary; replace this with the selected product coverage.
thinsetCoverageFt2PerBag	50	ft²/bag	Thinset package planning default	Coverage changes with trowel notch, tile profile, substrate, and product.
groutPackageVolumeFt3	0.5	ft³/package	Grout package planning default	Use the manufacturer's coverage chart for the selected grout.
underlaymentCoverageFt2	100	ft²/package	Underlayment package planning default	Overlap and vapor-barrier details vary by product.
laminateCoverageFt2	20	ft²/carton	Laminate package planning default	Replace with the carton coverage printed on the selected product.
vinylCoverageFt2	20	ft²/carton	Vinyl plank package planning default	Replace with the carton coverage printed on the selected product.
jointCompoundCoverageFt2	250	ft²/package	Joint-compound planning default	Finish level and application method change material use.
insulationCoverageFt2	40	ft²/package	Insulation package planning default	Use the selected batt or roll package coverage and required R-value.
paintCoats	2	coats	Room paint planning default	Primer, color change, sheen, and surface condition may change coats.
paintOpeningsFt2	20	ft²	Room paint planning default	Replace with the measured area of doors and windows.
groutJointWidthIn	0.125	in	Tile grout planning default	Use the actual joint width from the tile layout.
groutJointDepthIn	0.375	in	Tile grout planning default	Joint depth and grout profile vary by installation.
concreteSlabThicknessIn	4	in	Residential slab quantity default	Thickness is a structural decision. Confirm it with the project plans.
concreteFootingLengthFt	12	ft	Continuous footing quantity default
concreteFootingWidthFt	1.5	ft	Continuous footing quantity default
concreteFootingDepthIn	8	in	Continuous footing quantity default
concreteFootingCount	1	footings	Continuous footing quantity default
concreteBagVolume	1	yd³	Known-volume bag conversion default	Choose the unit that matches the volume you already measured.
postHoleDiameterIn	12	in	Fence post-hole quantity default
postHoleDepthIn	36	in	Fence post-hole quantity default
postCount	1	posts	Fence post-hole quantity default
sonotubeDiameterIn	10	in	Round pier quantity default
sonotubeDepthIn	36	in	Round pier quantity default
sonotubeCount	1	forms	Round pier quantity default
columnDiameterIn	12	in	Round column quantity default
columnHeightFt	3	ft	Round column quantity default
columnCount	2	columns	Round column quantity default
retainingWallLengthFt	16	ft	Retaining wall quantity default
retainingWallHeightFt	2	ft	Retaining wall quantity default
retainingBaseWidthIn	12	in	Retaining wall quantity default
retainingBaseDepthIn	6	in	Retaining wall quantity default
retainingDrainageWidthIn	4	in	Retaining wall quantity default
stairCount	3	steps	Concrete stair quantity default
stairRiseIn	7	in	Concrete stair quantity default
stairRunIn	11	in	Concrete stair quantity default
stairWidthFt	4	ft	Concrete stair quantity default
stairLandingLengthFt	1	ft	Concrete stair quantity default
stairLandingDepthIn	4	in	Concrete stair quantity default
stairWaistThicknessIn	4	in	Concrete stair quantity default
rafterRunFt	10	ft	Rafter geometry default
rafterPitchRiseIn12	6	in rise / 12 in run	Rafter geometry default
rafterOverhangFt	1	ft	Rafter geometry default
rafterCount	1	rafters	Rafter geometry default
beamClearSpanFt	12	ft	Preliminary beam load default
beamTributaryWidthFt	10	ft	Preliminary beam load default
beamLiveLoadPsf	40	psf	Preliminary residential load default
beamDeadLoadPsf	10	psf	Preliminary residential load default
headerOpeningFt	6	ft	Header length planning default
headerBearingIn	3	in	Header length planning default
studWallLengthFt	16	ft	Wall stud quantity default
studSpacingIn	16	in OC	Wall stud quantity default
studOpenings	1	openings	Wall stud quantity default
studCorners	2	members	Wall stud quantity default
boardLengthFt	8	ft	Board-foot quantity default
boardCount	10	boards	Board-foot quantity default
vinylPlankLengthIn	48	in	Vinyl plank quantity default
vinylPlankWidthIn	6	in	Vinyl plank quantity default
landscapeVolumeBagFt3	2	ft³/bag	Common 2 ft³ landscape bag planning default	Replace with the coverage printed on the selected product.
landscapeGravelBagWeightLb	50	lb/bag	Common landscape gravel bag planning default	Replace with the weight printed on the selected product.
poundsPerTon	2000	lb/ton	Short ton

Source: Uzi Tools construction estimating convention. Edition: Phase 1 planning defaults. Retrieved 2026-09-05.

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