Chapter 39 Stair Construction Layout

Introduction Stairs can provide an elegant focal point –Step-by-step instructions will be given for drawing: Straight run stair layouts Open stair layouts U-shaped stair layouts

Stair Terminology Basic terms: –Run –Rise –Tread –Riser –Stringer or stair jack –Kickblock or kicker –Headroom –Handrail –Guardrail

Determining Rise and Run Building codes dictate maximum rise –Total height from floor to floor must be known –Total rise is found by adding floor-to-ceiling height, floor joist depth, and floor covering depth Total rise is divided by maximum allowable rise to determine the number of steps

Straight Stair Layout Includes: –Drawing the stairs with finished-quality lines –Dimensioning and notes

Open Stairway Layout Major difference –No risers between treads

U-Shaped Stairs Often used in residential design –Introduces a landing Usually at midpoint of run Can be offset –Open or enclosed

L-Shaped Stairs Major differences from U-shaped stairs: –Landing can be placed at any point of stair run –A portion of stair will be shown in elevation, and a portion will be shown in section Cutting plane placement determines views

Exterior Stairs Concrete and wood stairs are common –Both laid out following straight-run stair procedure –Finish materials have major differences

Section–Stair Checklist Refer to the text for a complete stair checklist, including: –Plot –Drawing –Annotation –Dimensions