Civil engineering and structures
Blondel helper value
Helper calculation of stair geometry value 2h + s; it is not a code check or code-based design.
Related calculators
Stair riser height
Calculates single riser height from total rise and riser count.
Stair slope angle
Calculates stair slope angle from riser height and tread depth.
Roof angle from rise and run
Calculates roof pitch angle as arctangent of rise divided by run.
Roof area from plan and slope
Calculates sloped roof area from plan area and roof angle plus required material area with waste.
Roof area from plan area and angle
Converts roof plan area into approximate sloped roof area using the pitch angle.
Roof rafter length
Helper calculation of geometric rafter length from run and rise; it is not code-based design.