Calculator

Z-Stack™ Height Calculator

Enter your required vertical height and we’ll calculate the number of Z-Stack modules for both Standard and Compact towers. Z-Stack exits at the top of the tower. Finish recommendations follow SafeSmart’s planning rules below.

Feet
Inches

Finish rules (tower below target): ≤ 9.5" nothing added • 9.6–24" bridge • 24.1–48" AdjustaStairs • ≥ 48" add module

Note: This tool is intended for quick planning. Final selection depends on site conditions and project requirements.

Target Height
—
Results Updated

Standard Modules

36" Treads
Module exit height—
Modules needed—
Tie-offs needed—
Tower exit height—
Finish height—

Finish Recommendation

—

Standard is typically preferred when crews want a wider stair path and more room for tools/material movement.

Compact Modules

24" Treads
Module exit height—
Modules needed—
Tie-offs needed—
Tower exit height—
Finish height—

Finish Recommendation

—

Compact is commonly used when footprint is limited and a tighter tower layout is required for permanent installs.