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PRESCRIBED ITEM COUNTS

Lumber purchase list — boards needed scenarios.

How does changing boards needed affect lumber purchase list when the other inputs stay fixed?

What this decision changes

This supplied count describes physical items or prescribed positions. Repeated items can contribute to one pooled order only on the same compatible material basis. Method basis: Each stock item gets its own whole-board allowance. The volume is summed after rounding each item. Different sizes stay visible as separate lines.

The focus is boards needed in the first repeated measured entry. Other repeated entries keep their own supplied values.

Volume = Σ(purchased count × L × W × T)Lumber Purchase List 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 boards needed in the first repeated entry; the other entered values stay fixed.

Display units

Measured plan and product inputs

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.

Stock item 1 · entry varied by the range

Purchased board length

m

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.

Actual width

mm

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.

Actual thickness

mm

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.

Boards needed

Stock item 2

Purchased board length

m

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.

Actual width

mm

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.

Actual thickness

mm

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.

Boards needed

Supplied comparison range for boards needed

Lower supplied comparison value

Upper supplied comparison value

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: Purchased lumber volume — 0.188 m³. Rejected combinations remain visible below.

Quantity to plot

Each bar is one actual calculated purchased lumber volume. Horizontal values: boards needed in the supplied count basis. Only the first repeated entry varies.

Boards needed	Purchased lumber volume	Change from baseline	Use this scenario
5	0.168 m³	-0.02 m³	Open in calculator Exact quantity breakdown Item 1 boards 6 boards Item 2 boards 6 boards Board-foot volume 71.19437 board ft
6	0.172 m³	-0.016 m³	Open in calculator Exact quantity breakdown Item 1 boards 7 boards Item 2 boards 6 boards Board-foot volume 72.88947 board ft
8	0.18 m³	-0.008 m³	Open in calculator Exact quantity breakdown Item 1 boards 9 boards Item 2 boards 6 boards Board-foot volume 76.27968 board ft
9	0.184 m³	-0.004 m³	Open in calculator Exact quantity breakdown Item 1 boards 10 boards Item 2 boards 6 boards Board-foot volume 77.97478 board ft
11	0.196 m³	0.008 m³	Open in calculator Exact quantity breakdown Item 1 boards 13 boards Item 2 boards 6 boards Board-foot volume 83.0601 board ft
12	0.2 m³	0.012 m³	Open in calculator Exact quantity breakdown Item 1 boards 14 boards Item 2 boards 6 boards Board-foot volume 84.7552 board ft
13	0.204 m³	0.016 m³	Open in calculator Exact quantity breakdown Item 1 boards 15 boards Item 2 boards 6 boards Board-foot volume 86.4503 board ft
15	0.212 m³	0.024 m³	Open in calculator Exact quantity breakdown Item 1 boards 17 boards Item 2 boards 6 boards Board-foot volume 89.84051 board ft
16	0.216 m³	0.028 m³	Open in calculator Exact quantity breakdown Item 1 boards 18 boards Item 2 boards 6 boards Board-foot volume 91.53562 board ft

Read the evaluated results

Compare the selected count with the total quantity and whole purchase lines. Boundary positions, kits and package rounding can make the order change in steps.

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

The count and fixing or component schedule are inputs; capacity, performance and safe attachment are not determined.

Uses supplied geometry, product properties and purchasing specifications.

Does not choose or certify construction dimensions, spacing, loads or regulatory requirements.

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

Lumber Purchase List Calculator

Other independent input decisions

Prepare the actual material data

Read the measurement and purchase guides

Check actual dimensions before treating board feet as physical timber volume

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