Question

1. Working with Stairs: Proficiency with laying out stairs and proportioning their treads and risers, even at times under seeming impossible circumstances, is an indispensable skill for the designer of buildings. For this exercise, review pages 288 through 289 (proportioning stairs) of the text for the information you will need.

1. Calculate numbers and dimensions of treads and risers for the following stairs. Show all calculations:

1. Exit stair for a school, total rise 12’ – 8”.

Number of Risers __________

Riser Height _______________

Numbers of treads ___________

Depth of treads ___________

2. Main stair in a single family resident, total rise 8’ – 11 ½”

Number of Risers __________

Riser Height _______________

Numbers of treads ___________

Depth of treads ___________

3. Exterior entrance steps to a courthouse, total rise 4’ – 9”.

Number of Risers __________

Riser Height _______________

Numbers of treads ___________

Depth of treads ___________

Answer 1