Selected Bibliography Architectural Graphics | Page 126

STAIRS Drawing stairs inperspective is easiest when we can determine the vanishing point for the inclined li nes that connect the stair nosings. We first lay out the perspective view of the horizontal stair run on the floor plane. We arenot concerned yet with the individual treads of the sta irway. ----. We then extend a vertica l plane tothe height of the stair landing or next floor level. · - .. Next we divide one side of this plane into the number of equal risers in the stair run. • We can determine the height of the first riser in perspective. We draw an incline line from the topof d the first riser to the top of the landing or upper floor level. ----:-r-----;.?L---+-~--. This inclined line is subdivided by extending horizontal lines from the riser markings. • From these points, we draw the risers and treads as vertical and horizontal planes in perspective. We can use the vanishing points for inclined lines todraw other elements parallel to theinclined lines, such as stair stringers and railings. Ht.. ./ 120 /AR HITECTURAl GRAPHICS C