Risers shall be vertical or sloped from the underside of the leading edge of the tread above at an angle not more than 30 (0.51 rad) degrees from the vertical.ĭon't confuse step riser height (defined above) with stairway headroom - the vertical space between the walking surface of a stair tread and the ceiling or other obstruction overhead This measurement describes step risers that may be set at an angle other than 90 degree vertical.
UNIVERSAL BUS STEP TREAD CODE
Some codes such as the Virginia stair code permit greater variations in step riser heights provided that the individual steps that are at an off-riser height from their neighbors are marked with a special stripe that identifies the odd tread AND that is a marking different from strips or markings that may be required to indicate the outer edge of the tread or tread nose.
Sketch at page top courtesy Carson Dunlop Associates. We also discuss the allowable variation in stair or step riser height between individual steps in a stairway.
UNIVERSAL BUS STEP TREAD HOW TO
Stair calculations: how to calculate custom stair tread & risers based on stair rise & run measurements. Stair safety hazards, photos of defects & Sketches of stair design requirements. Different dimensions for open versus closed riser stairways. Suggestions for adapting pre-fabricated stairways to the to the actual overall stairway height without violating building stair codes & standards.īasic stair riser height dimensions required for safe stairs. Definition of & specifications for open riser & closed riser stairs. Topics here include Allowable variation in stair step riser height by code & to avoid tripping. We compare the code requirements for closed riser and open riser stairs and we include other basic stair tread and riser dimensions. This article provides building code specifications, sketches, photographs, and examples of the proper stair step height or stair riser dimensions and other stair riser requirements for indoor or outdoor stairways. #7 /var/We have no relationship with advertisers, products, or services discussed at this website. #6 /var/www/web/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application->handleRequest(Object(yii\web\Request)) #5 /var/www/web/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction('category/index', Array) #4 /var/www/web/vendor/yiisoft/yii2/base/Module.php(528): yii\base\Controller->runAction('index', Array)
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