Formula and input notes
Clear gap = [opening − (member count × member width)] ÷ (member count − 1)
| Input | Practical note |
|---|---|
| Maximum clear gap | This is the Baluster Calculator layout value for maximum clear gap; confirm whether the drawing specifies clear or on-center spacing. |
Worked baluster example
Baluster Calculator example: Across a 95.5-in opening, the trial pitch is 1.5 in + 4 in = 5.5 in, requiring 19 members. Equal distribution leaves 3.72 in clear and 5.22 in on center.
Use the count as a baseline
Use the calculated clear gap to mark a test layout; repeat the calculation for each opening instead of carrying one count across unequal bays.
Posts, gates, and field conditions
Posts, newels, end offsets, centerline layout, tapered members, stair rake, and local opening limitations affect the final spacing plan.
Questions specific to this calculation
How does baluster keep the clear gap within the limit?
Measure the clear opening between fixed boundaries, enter actual baluster width, and set the maximum permitted clear gap for the project.