MEASURED QUANTITY SENSITIVITY

Aggregate mass orders — layer depth scenarios.

How does changing layer depth affect aggregate mass orders when the other inputs stay fixed?

What this decision changes

This measured quantity or supplied dimension enters the method on its stated unit basis. Other inputs stay fixed so its effect can be separated from net deductions, stock constraints or purchase rounding. Method basis: Sum non-overlapping measured areas at their own specified depths. Apply your allowance once, subtract compatible usable stock, and optionally round the remaining bulk volume to the supplier increment. Multiply by your supplier density to estimate mass. Density must refer to the same loose or installed volume basis as your inputs; this calculation does not select a base depth or compaction specification.

The focus is layer depth. All other shared inputs remain fixed for each evaluated range.

New order = round up(max(0, Σ(net area × depth × count) × (1 + allowance) − stock) / increment) × increment; mass = order × densityGravel Calculator

Evaluate your supplied alternatives

Start with your measured plan and selected product data. The initial values and range are illustrative. Each scenario changes only layer depth; the other entered values stay fixed.

Display units

Measured plan and product inputs

Measure

Length

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Width

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Layer depth

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Bulk density

kg/m³

Ask your supplier for the density and compaction basis.

Waste allowance

Shortcuts only; choose your own allowance above.

Where to get this value

Enter your own allowance. Presets are input shortcuts, not a construction recommendation.

Area to exclude

m²

Usable gravel already available

m³

Where to get this value

Use the actual usable quantity or dimensions of the product you intend to buy. Check the label and the unit shown here.

Supplier volume order increment

m³

Enter 0 to leave volume unrounded.

Supplied comparison range for layer depth

Lower supplied comparison value

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Upper supplied comparison value

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Nine evenly spaced values are evaluated. Whole counts are rounded to distinct integer scenarios. Values between the listed samples are not calculated.

9 evaluated scenarios

Baseline: Gravel volume to purchase — 2.2 m³. Rejected combinations remain visible below.

Quantity to plot

Each bar is one actual calculated gravel volume to purchase. Horizontal values: layer depth in mm.

Layer depth	Gravel volume to purchase	Change from baseline	Use this scenario
60 mm	1.32 m³	-0.88 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 1.2 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 2,112 kg Weight in US short tons 2.328081 US tons Weight in metric tonnes 2.112 tonnes
72.5 mm	1.595 m³	-0.605 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 1.45 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 2,552 kg Weight in US short tons 2.813098 US tons Weight in metric tonnes 2.552 tonnes
85 mm	1.87 m³	-0.33 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 1.7 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 2,992 kg Weight in US short tons 3.298115 US tons Weight in metric tonnes 2.992 tonnes
97.5 mm	2.145 m³	-0.055 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 1.95 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 3,432 kg Weight in US short tons 3.783132 US tons Weight in metric tonnes 3.432 tonnes
110 mm	2.42 m³	0.22 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 2.2 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 3,872 kg Weight in US short tons 4.268149 US tons Weight in metric tonnes 3.872 tonnes
122.5 mm	2.695 m³	0.495 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 2.45 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 4,312 kg Weight in US short tons 4.753166 US tons Weight in metric tonnes 4.312 tonnes
135 mm	2.97 m³	0.77 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 2.7 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 4,752 kg Weight in US short tons 5.238183 US tons Weight in metric tonnes 4.752 tonnes
147.5 mm	3.245 m³	1.045 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 2.95 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 5,192 kg Weight in US short tons 5.7232 US tons Weight in metric tonnes 5.192 tonnes
160 mm	3.52 m³	1.32 m³	Open in calculator Exact quantity breakdown Net area 20 m² Volume before allowance 3.2 m³ Stock used 0 m³ Supplier rounding surplus 0 m³ Estimated weight 5,632 kg Weight in US short tons 6.208217 US tons Weight in metric tonnes 5.632 tonnes

Read the evaluated results

Read calculated demand, whole purchases and exact detail lines separately. This specific input may change quantity continuously, cross a purchase step or make the stated geometry or stock fit invalid.

Replace every illustrative baseline measurement and selected product value with the inputs for your actual task.
Enter a comparison range on the focused input's stated unit and quantity basis.
Review rejected combinations and use the exact detail lines to distinguish measured demand from whole purchases.
Open an evaluated scenario in the full calculator to save its original inputs and quantity breakdown to a browser material project.

Keep the comparison within scope

Compare measurements or already specified alternatives. Quantity sensitivity does not establish material suitability or construction requirements.

Only quantities from supplied dimensions and specifications are calculated.

No material-property reference values are bundled; obtain product values from the selected supplier's data sheet.

Only the listed samples are evaluated. Intermediate values, alternate constraints and global cutting optimality are not inferred from the graph.

Continue with this quantity method

Gravel Calculator

Other independent input decisions

Prepare the actual material data

Read the measurement and purchase guides

Read US short tons and metric tonnes as different mass units

Quantity method and illustrative scenarios checked 6 October 2026. Methods and scope.