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Mln. <br />Headroom <br />6'6' <br />Max. 4٠' <br />Sphere <br />Handral! <br />Helghi <br />(34" Min.0ا <br />Max.38"اIIOpen Space إ\، «Code Riser Tread .دCode R'.ser Tread)meets i/j/s٥. <br />requirement) :เรฺ^ <br />|ν^· <br /> ج،3ا٢ Building c.d© Requirement Highlights <br />٠ Minimum clear walking path oi 26 inches. A 5-foot diameter or larger stair will <br />provide this standard stair width <br />٠ stair tread codes states that each tread will have a minimum of 7 1/2 inch tread <br />depth at 12 inches from the narrow edge <br />. All treads will be identical <br />« The tread rise shall not be more than 9 1/2 inches high <br />. Minimum headroom of 6 foot 6 Inches shall be provided, measuring plumb from the <br />edge of the platform down to the tread below <br />٠ Landing width shall not be less than the required staircase width. Minimum spiral <br />stair tread width is 26 Inches - Salter's code platforms start at 31 inches wide <br />٠ stair balusters shall be spaced so a 4-inch object cannot pass between. The IRC <br />Stair Code permits a 4 3/8 inch space <br />« Ва1сопу٨Л/е11 Enclosure guardrail balusters shall be spaced so a 4-inch object