Stairs Calculator With Landing . If your staircase is directly above a flat surface made of concrete or gravel, you may not need to construct a landing pad. Stair Landings - learn how to add landings to your stair designs. 3D L Shaped Stair calculator - quarter turn stairs with ... (Harriett Wilson) ADJUST FACTORY-BUILT STAIR to FIT the SITE. STAIR RISE CALCULATION: NUMBER of RISERS. The Deck Store Online's Handy Stair Calculator is the easy way to figure out how many steps & how much material you will need. These applications will - due to browser restrictions - send data between your browser and our server. Nosing: the portion of the stair tread that overhangs the front of a riser. Stair calculator with 180 degrees turn, landing - stair ... Framing Stairs with a Landing. An L-shaped staircase is ... Deck Stair Calculator | F...