Figure 21-1 Stairs built as part of a wood timber retaining wall installation.
Figure 21-2 Freestanding stairs in a gradual slope.
Figure 21-3 Freestanding concrete steps formed and poured as part of this entry construction.
Figure 21-4 Freestanding stairs using timbers to create risers with a loose granular material for the treads.
Slabs overlap lower step Figure 21-5 Freestanding stairs constructed from slab materials.
Base material 12" 12" Left edge A. of stairs Center line of stairs 12" Extra wall material Wall first course Base material Rerouted tile Cheek wall Base material Second tread First tread B. Left edge of stairs Center line of stairs Interlocked corners Cheek wall Third tread C. Fill to first tread First tread Second tread C L Figure 21-6 Interlocking stair construction for timber walls. A. Base trench and first course for interlock stairs. B. Second course for interlock stairs. C. Subsequent courses for interlock stairs. (Note: First course will be completely or partially buried.)
Wall first course Rerouted tile 12" Extra base material Extra wall material Base material Left edge of stairs A. Center line of stairs First tread Second tread Base material Base material Left edge of stairs B. Center line of stairs First tread Cheek wall Third tread C. Fill over base C L Second tread Capstone on tread First tread Figure 21-7 Interlocking stair construction with segmental precast units. A. Base trench and first course for interlock stairs. B. Second course for interlock stairs. C. Subsequent courses for interlock stairs. (Note: First course will be completely or partially buried.)
Precut stone treads Rerouted tile Overlap corners Second riser First riser First riser A. B. Expanded wall base C. Steps run behind cheek walls Third riser Second riser First riser Figure 21-8 Interlocking stair construction with stone. A. Base trench and first course for interlock stairs. B. Second course for interlock stairs. C. Subsequent courses for interlock stairs. (Note: First course will be completely or partially buried.)
Figure 21-9 Completed interlocking stairs with precast units. Courtesy of Gary Pribyl, Kings Materials.
Expanded wall base A. Rerouted tile First step riser B. Set back batter Second step riser C. First step riser Higher step overlaps lower Figure 21-10 Butt stair construction for timber walls. A. First course of wall and cheek wall for butt stairs. B. First step riser for butt stairs. C. Second course for butt stairs. (Note: First course will be completely or partially buried.)
Expanded wall base A. Rerouted tile Use corner block or cut square end to block if square corner is desired First step riser B. Second step riser C. Cap block for tread First step riser Figure 21-11 Butt stair construction with segmental precast units. A. First course of wall and a cheek wall for butt stairs. B. First step riser for butt stairs. C. Second course for butt stairs with optional tread surfacing. (Note: First course will be completely or partially buried.)
A. Expanded wall base Figure 21-12 Butt stair construction with dry-laid stone. A. First course of wall and cheek wall for butt stairs.
Rerouted tile B. First riser B. First step riser for butt stairs.
Set-back batter Second riser C. Overlap lower step First riser C. Second course for butt stairs. (Note: First course will be completely or partially buried.)
Figure 21-13 Completed butt stairs with precut stone steps. Courtesy of Paul Dykstra, Lowa City Landscaping.
Figure 21-14 Building the base step of a freestanding wood timber installation.
Figure 21-15 Subsequent steps of this freestanding wood timber stair installation rest on the sides of the lower stair. Treads will be filled with granular material.