DEDUCTIONS AND EXISTING STOCK

Railing material — clear opening between posts scenarios.

How does changing clear opening between posts affect railing material when the other inputs stay fixed?

What this decision changes

A known internal space, existing stock or shared quantity must enter the correct subtraction or eligibility step rather than being counted as new material. Method basis: The equal-gap layout includes a gap at each end. Input spacing is not assessed for code compliance or safety. Structural posts are excluded.

The focus is clear opening between posts. All other shared inputs remain fixed for each evaluated range.

Elements per opening = ceil((opening − gap) ÷ (element width + gap))Railing Material 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 clear opening between posts; the other entered values stay fixed.

Display units

Measured plan and product inputs

Clear opening between posts

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 infill 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.

Specified maximum clear gap

Identical openings

Supplied comparison range for clear opening between posts

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: Infill elements — 12 elements. Rejected combinations remain visible below.

Quantity to plot

Each bar is one actual calculated infill elements. Horizontal values: clear opening between posts in m.

Clear opening between posts	Infill elements	Change from baseline	Use this scenario
0.6 m	8 elements	-4 elements	Open in calculator Exact quantity breakdown Elements per opening 4 Resulting equal clear gap 80 mm
0.725 m	10 elements	-2 elements	Open in calculator Exact quantity breakdown Elements per opening 5 Resulting equal clear gap 79.16667 mm
0.85 m	10 elements	-2 elements	Open in calculator Exact quantity breakdown Elements per opening 5 Resulting equal clear gap 100 mm
0.975 m	12 elements	0 elements	Open in calculator Exact quantity breakdown Elements per opening 6 Resulting equal clear gap 96.42857 mm
1.1 m	14 elements	2 elements	Open in calculator Exact quantity breakdown Elements per opening 7 Resulting equal clear gap 93.75 mm
1.225 m	16 elements	4 elements	Open in calculator Exact quantity breakdown Elements per opening 8 Resulting equal clear gap 91.66667 mm
1.35 m	18 elements	6 elements	Open in calculator Exact quantity breakdown Elements per opening 9 Resulting equal clear gap 90 mm
1.475 m	20 elements	8 elements	Open in calculator Exact quantity breakdown Elements per opening 10 Resulting equal clear gap 88.63636 mm
1.6 m	20 elements	8 elements	Open in calculator Exact quantity breakdown Elements per opening 10 Resulting equal clear gap 100 mm

Read the evaluated results

Watch the net requirement and actual order separately. Invalid rows identify combinations that cannot satisfy the method's geometric or stock-basis constraints.

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 supplied cavity, exclusion or stock eligibility must already be valid; the result does not select a safe shell, opening or construction detail.

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

Railing Material Calculator

Other independent input decisions

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