Carbon steel alternating tread stairs with powder coat finish

Our most popular and most used type of alternating tread stair

Ideal for most indoor applications

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Switchbacks
Crane
Conveyor
Augusta
Mezzanine

Design specifications

Available with stair slope of either 56° or 68°

Three-stringer design with alternating treads welded to the stringers

Ships with rubber bumper attached to the center stringer

Handrails ship unattached and bolt into place during installation

Custom built to exact height

56° carbon steel alternating tread stairs with standard handrails are available in heights from 36 inches to 240 inches; 68° carbon steel alternating tread stairs with standard handrails are available in heights from 42 inches to 240 inches; 56° and 68° carbon steel alternating tread stairs with optional or flush handrails are available in heights from 48 inches to 240 inches.

Standard powder coat colors

Safety yellow
Iron gray
Gray primer
Custom colors

Custom RAL colors are also available.

RAL Color Chart

Angle options

56 degrees
68 degrees

Handrail options

Standard
Optional
Flush
Handrail dimensions

Handrails are close fitting with a 20" inside width and 23" outside width. Standard handrails add 42" to the stair height; optional handrails add 5.75" to the stair height.

Design specifications

  • Choice of 56° or 68° stair slope
  • Three-stringer design with alternating treads welded to the stringers
  • Ships with rubber bumper attached to the center stringer
  • Handrails ship unattached and bolt into place during installation

Custom built to exact height

56° stairs with standard handrails are available in heights from 36 inches to 240 inches.

68° stairs with standard handrails are available in heights from 42 inches to 240 inches.

56° and 68° stairs with optional or flush handrails are available in heights from 48 inches to 240 inches.

Standard colors

Safety yellow
Iron gray
Primer gray

Custom colors

Custom RAL colors are also available.

RAL Color Chart

Angle options

56 degrees
68 degrees

Handrail options

Standard
Optional
Flush

Handrail dimensions

Handrails are close fitting with a 20" inside width and 23" outside width.

Standard handrails add 42" to the stair height; optional handrails add 5.75" to the stair height.

Switchbacks
Crane
Augusta
Mezzanine

Pricing and specifications for carbon steel alternating tread stairs with a powder coat finish

Alternating tread stairs are custom built to your exact height specifications. See below for pricing in six inch increments; get a quote for custom stair heights.

56° stairs are available in heights from 36" to 240" and have a riser height of 6.416" to 7.7"

68° stairs are available in heights from 42" to 240" and have a riser height of 7.517" to 9.02"

Overall width is 23"; inside handrail width is 20"

Tread depth is a minimum of 8.5"

STAIR
HEIGHT
OVERALL/HANDRAIL HEIGHT STAIR RUN WEIGHT PRICE
STANDARD
OPTIONAL
56° 68° 56° 68° STANDARD COLORS CUSTOM COLORS
36" 78" 41.75" 28.93" N/A 83.408# N/A $872.08 $113.29
42" 84" 47.75" 33.11" 23.08" 91.976# 76.944# $969.10 $1,217.69
48" 90" 53.75" 37.25" 25.66" 100.544# 84.936# $1,066.12 $1,322.09
54" 96" 59.75" 41.37" 28.2" 109.112# 92.928# $1,163.14 $1,426.49
60" 102" 65.75" 44.91" 30.28" 117.68# 100.92# $1,260.16 $1,530.89
66" 108" 71.75" 49.07" 32.83" 126.248# 108.912# $1,357.18 $1,635.29
72" 114" 77.75" 53.21" 35.36" 134.816# 116.904# $1,454.20 $1,739.69
78" 120" 83.75" 57.33" 37.86" 143.384# 124.896# $1,551.22 $1,844.09
84" 126" 89.75" 61.44" 40.04" 151.952# 132.888# $1,648.24 $1,948.49
90" 132" 95.75" 65.15" 42.56" 160.52# 140.88# $1,745.26 $2,052.89
96" 138" 101.75" 69.27" 45.05" 169.088# 148.872# $1,842.28 $2,157.29
102" 144" 107.75" 73.39" 47.28" 177.656# 156.864# $1,939.30 $2,261.69
108" 150" 113.75" 77.49" 49.78" 186.224# 164.856# $2,036.32 $2,366.09
114" 156" 119.75" 81.59" 52.27" 194.792# 172.848# $2,133.34 $2,470.49
120" 162" 125.75" 85.38" 54.75" 234.56# 180.84# $2,230.36 $2,574.89
126" 168" 131.75" 89.49" 57.01" 244.688# 188.832# $2,327.38 $2,679.29
132" 174" 137.75" 93.59" 59.5" 254.816# 196.824# $2,424.40 $2,783.69
138" 180" 143.75" 97.68" 61.98" 264.944# 204.816# $2,521.42 $2,888.09
144" 186" 149.75" 101.77" 64.45" 275.072# 245.272# $2,618.44 $2,992.49
150" 192" 155.75" 105.62" 66.74" 285.2# 254.2# $2,715.46 $3,096.89
156" 198" 161.75" 109.71" 69.21" 295.328# 263.128# $2,812.48 $3,201.29
162" 204" 167.75" 113.8" 71.68" 305.456# 272.056# $2,909.50 $3,305.69
168" 210" 173.75" 117.89" 73.98" 315.584# 280.984# $3,006.52 $3,410.09
174" 216" 179.75" 121.97" 76.45" 325.712# 289.912# $3,103.54 $3,514.49
180" 222" 185.75" 125.85" 78.92" 335.84# 298.84# $3,200.56 $3,618.89
186" 228" 191.75" 129.94" 81.38" 345.968# 307.768# $3,297.58 $3,723.29
192" 234" 197.75" 134.02" 83.7" 356.096# 316.696# $3,394.60 $3,827.69
198" 240" 203.75" 138.11" 86.16" 366.224# 325.624# $3,491.62 $3,932.09
204" 246" 209.75" 142.19" 88.62" 376.352# 334.552# $3,588.64 $4,036.49
210" 252" 215.75" 146.09" 91.08" 386.48# 343.48# $3,685.66 $4,140.89
216" 258" 221.75" 150.17" 93.41" 396.608# 352.408# $3,782.68 $4,245.29
222" 264" 227.75" 154.25" 95.87" 406.736# 361.336# $3,879.70 $4,349.69
228" 270" 233.75" 158.33" 98.33" 416.864# 370.264# $3,976.72 $4,454.09
234" 276" 239.75" 162.4" 100.78" 426.992# 379.192# $4,073.74 $4,558.49
240" 282" 245.75" 166.32" 103.12" 437.12# 388.12# $4,170.76 $4,662.89

All pricing information is presented in good faith and believed to be correct at the time of publishing. We reserve the right to change prices at any time without notice. Prices do not include installation hardware or shipping costs.

Pricing and specifications

Alternating tread stairs are custom built to your exact height specifications. See below for pricing in six inch increments; get a quote for custom stair heights.

  • 56° stairs are available in heights from 36" to 240" and have a riser height of 6.416" to 7.7"
  • 68° stairs are available in heights from 42" to 240" and have a riser height of 7.517" to 9.02"
  • Overall width is 23"; inside handrail width is 20"
  • Tread depth is a minimum of 8.5"
  • Add 42" to stair height for overall height of stairs with standard handrails
  • Add 5¾" to stair height for overall height of stairs with optional handrails
STAIR
HEIGHT
STAIR RUN PRICE
56° 68° STANDARD COLORS CUSTOM COLORS
36" 28.93" N/A $872.08 $113.29
42" 33.11" 23.08" $969.10 $1,217.69
48" 37.25" 25.66" $1,066.12 $1,322.09
54" 41.37" 28.2" $1,163.14 $1,426.49
60" 44.91" 30.28" $1,260.16 $1,530.89
66" 49.07" 32.83" $1,357.18 $1,635.29
72" 53.21" 35.36" $1,454.20 $1,739.69
78" 57.33" 37.86" $1,551.22 $1,844.09
84" 61.44" 40.04" $1,648.24 $1,948.49
90" 65.15" 42.56" $1,745.26 $2,052.89
96" 69.27" 45.05" $1,842.28 $2,157.29
102" 73.39" 47.28" $1,939.30 $2,261.69
108" 77.49" 49.78" $2,036.32 $2,366.09
114" 81.59" 52.27" $2,133.34 $2,470.49
120" 85.38" 54.75" $2,230.36 $2,574.89
126" 89.49" 57.01" $2,327.38 $2,679.29
132" 93.59" 59.5" $2,424.40 $2,783.69
138" 97.68" 61.98" $2,521.42 $2,888.09
144" 101.77" 64.45" $2,618.44 $2,992.49
150" 105.62" 66.74" $2,715.46 $3,096.89
156" 109.71" 69.21" $2,812.48 $3,201.29
162" 113.8" 71.68" $2,909.50 $3,305.69
168" 117.89" 73.98" $3,006.52 $3,410.09
174" 121.97" 76.45" $3,103.54 $3,514.49
180" 125.85" 78.92" $3,200.56 $3,618.89
186" 129.94" 81.38" $3,297.58 $3,723.29
192" 134.02" 83.7" $3,394.60 $3,827.69
198" 138.11" 86.16" $3,491.62 $3,932.09
204" 142.19" 88.62" $3,588.64 $4,036.49
210" 146.09" 91.08" $3,685.66 $4,140.89
216" 150.17" 93.41" $3,782.68 $4,245.29
222" 154.25" 95.87" $3,879.70 $4,349.69
228" 158.33" 98.33" $3,976.72 $4,454.09
234" 162.4" 100.78" $4,073.74 $4,558.49
240" 166.32" 103.12" $4,170.76 $4,662.89

All pricing information is presented in good faith and believed to be correct at the time of publishing. We reserve the right to change prices at any time without notice. Prices do not include installation hardware or shipping costs.

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