Alternating tread stair crossover systems

OSHA-compliant systems with 56° or 68° alternating tread stairs.

Alternating tread stair crossover systems

OSHA-compliant systems with 56° or 68° alternating tread stairs.

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Dimensions and specifications

Stair SLOPE of either 56° or 68° from the horizontal §1910.25(f)

TREADS are at least 8½ inches deep with open risers and at least 7 inches wide at the leading edge §1910.25(f)(3), §1910.25(f)(4), §1910.25(f)(5)

FALL PROTECTION system with less than 19 inches between horizontal mid-rails OSHA §1910.29(b)(2)

The overall dimensions of height, width and length must fit within the amount of space that is available to install the crossover system. If you have enough room to install a crossover system with standard stairs, that is the OSHA-preferred solution.

The platform length and stair height are determined by the dimensions of the obstacle. These measurements are used to calculate the overall dimensions of the crossover system.

Standard options for list price systems

Carbon steel with safety yellow, iron gray, or gray primer powder coat finish
56° or 68° degree alternating tread stairs
Carbon steel with safety yellow, iron gray, or gray primer powder coat finish
Diamond plate platform decking
OSHA-compliant 42" high guardrails constructed of 1½ inch round tubing
Crossover bracing kit
All assembly hardware

Additional options are also available

Carbon steel with custom powder coat colors
Carbon steel with hot-dip galvanized finish
Grade 304 stainless steel
68° aluminum alternating tread stairs
Back pans for stairs
Safety gates
Additional stair heights and platform sizes
Varying stair heights
Additional platform decking and configurations

Crossover bracing kit

Alternating tread stair crossover systems must be braced to prevent swaying. The bracing kit for these systems includes stainless steel brackets and hardware for the upper and lower connections plus custom tubing in the same material and finish as your crossover system.

We need the following information to calculate bracing specifications. Contact us for assistance with determining the optimal spread and brace angles for your system.

Dimensions of obstacles surrounding the system
Optimal spread angle (0° to 20° for 56° stairs; 0° to 10° for 68° stairs)
Optimal brace angle (20° to 30° from the vertical plane)

The cost of the bracing kit is included in the list price for alternating tread stair crossover systems. Subtract $303.91 from the list price if you will provide your own bracing for the system.

Dimensions and specifications

Stair SLOPE of either 56° or 68° from the horizontal §1910.25(f)

TREADS are at least 8½ inches deep with open risers and at least 7 inches wide at the leading edge §1910.25(f)(3), §1910.25(f)(4), §1910.25(f)(5)

FALL PROTECTION system with less than 19 inches between horizontal mid-rails OSHA §1910.29(b)(2)

The overall dimensions of height, width and length must fit within the amount of space that is available to install the crossover system. If you have enough room to install a crossover system with standard stairs, that is the OSHA-preferred solution.

The platform length and stair height are determined by the dimensions of the obstacle. These measurements are used to calculate the overall dimensions of the crossover system.

Standard options for list price systems

  • Carbon steel with safety yellow, iron gray, or gray primer powder coat finish
  • 56° or 68° degree alternating tread stairs
  • Carbon steel with safety yellow, iron gray, or gray primer powder coat finish
  • Diamond plate platform decking
  • OSHA-compliant 42" high guardrails constructed of 1½ inch round tubing
  • Crossover bracing kit
  • All assembly hardware

Additional options are also available

  • Carbon steel with custom powder coat colors
  • Carbon steel with hot-dip galvanized finish
  • Grade 304 stainless steel
  • 68° aluminum alternating tread stairs
  • Back pans for stairs
  • Safety gates
  • Additional stair heights and platform sizes
  • Varying stair heights
  • Additional platform decking and configurations

Crossover bracing kit

Alternating tread stair crossover systems must be braced to prevent swaying. The bracing kit for these systems includes stainless steel brackets and hardware for the upper and lower connections plus custom tubing in the same material and finish as your crossover system.

We need the following information to calculate bracing specifications. Contact us for assistance with determining the optimal spread and brace angles for your system.

  • Dimensions of obstacles surrounding the system
  • Optimal spread angle (0° to 20° for 56° stairs; 0° to 10° for 68° stairs)
  • Optimal brace angle (20° to 30° from the vertical plane)
  • The cost of the bracing kit is included in the list price for alternating tread stair crossover systems. Subtract $303.91 from the list price if you will provide your own bracing for the system.

Optional accessories for alternating tread stair crossover systems

Safety gates

Safety gates provide additional security at the top of alternating tread stairs. They attach to the platform rails with reversible hinges and provide a 180° gate swing.

$319.10/gate: Carbon steel with standard powder coat colors
$329.75/gate: Carbon steel with hot-dip galvanized finish
$600.20/gate: Grade 304 stainless steel with mill finish

Backpans

Minimize the risk of damage to workers and equipment beneath your crossover system by adding backpans to the alternating tread stairs. Backpans bolt under the stairs to form a solid barrier behind the treads that spans the height of the stair and provides protection from falling objects.

Pricing for backpans is based on the stair height.

Optional accessories for alternating tread stair crossover systems

Safety gates

Safety gates provide additional security at the top of alternating tread stairs. They attach to the platform rails with reversible hinges and provide a 180° gate swing.

$319.10/gate: Carbon steel with standard powder coat colors
$329.75/gate: Carbon steel with hot-dip galvanized finish
$600.20/gate: Grade 304 stainless steel with mill finish

Backpans

Minimize the risk of damage to workers and equipment beneath your crossover system by adding backpans to the alternating tread stairs. Backpans bolt under the stairs to form a solid barrier behind the treads that spans the height of the stair and provides protection from falling objects.

Pricing for backpans is based on the stair height.

List prices for alternating tread stair crossover systems

The CLEARANCE WIDTH and OVERALL WIDTH for all alternating tread stair systems is 24"
The PLATFORM SPAN is equal to the CLEARANCE SPAN on all alternating tread stair systems
The minimum height for alternating tread stair systems with 56° stairs is 30"
The minimum height for steel alternating tread stair systems with 68° stairs is 36"
Aluminum alternating tread stair systems with 68° stairs are available in heights starting at 24"

56° STAIRS 68° STAIRS
STAIR
HEIGHT
CLEARANCE
HEIGHT
OVERALL
HEIGHT
PLATFORM/
CLEARANCE SPAN
OVERALL
LENGTH
OVERALL
LENGTH
LIST
PRICE
30” 29.8125” 72” 24” 81.85” $2,440.91
30” 87.85” $2,539.14
36” 93.85” $2,637.36
42” 99.85” $2,735.58
48” 105.85” $2,833.80
54” 111.85” $2,932.00
36” 35.8125” 78” 24” 90.214” 70.15” $2,634.95
30” 96.214” 76.15” $2,733.18
36” 102.214” 82.15” $2,831.40
42” 108.214” 88.15” $2,929.62
48” 114.214” 94.15” $3,027.84
54” 120.214” 100.15” $3,126.04
42” 41.8125” 84” 24” 98.5” 75.322” $2,828.99
30” 104.5” 81.322” $2,927.22
36” 110.5” 87.322” $3,025.44
42” 116.5” 93.322” $3,123.66
48” 122.5” 99.322” $3,221.88
54” 128.5” 105.322” $3,320.08
48” 47.8125” 90” 24” 106.74” 80.402” $3,023.03
30” 112.74” 86.402” $3,121.26
36” 118.74” 92.402” $3,219.48
42” 124.74” 98.402” $3,317.70
48” 130.74” 104.402” $3,415.92
54” 136.74” 110.402” $3,514.12
54” 53.8125” 96” 24” 106.74” 80.402” $3,023.03
30” 112.74” 86.402” $3,121.26
36” 118.74” 92.402” $3,219.48
42” 124.74” 98.402” $3,317.70
48” 130.74” 104.402” $3,415.92
54” 136.74” 110.402” $3,514.12
60” 59.8125” 102” 24” 113.822” 84.556”
$3,217.07
30” 119.822” 90.556” $3,315.30
36” 125.822” 96.556” $3,413.52
42” 131.822” 102.556” $3,511.74
48” 137.822” 108.556” $3,609.96
54” 143.822” 114.556” $3,708.16
66” 65.8125” 108” 24” 122.14” 89.664”
$3,411.11
30” 128.14” 95.664” $3,509.34
36” 134.14” 101.664” $3,607.56
42” 140.14” 107.664” $3,705.78
48” 146.14” 113.664” $3,804.00
54” 152.14” 119.664” $3,902.20
72” 71.8125” 114” 24” 130.414” 94.716”
$3,605.15
30” 136.414” 100.716” $3,703.38
36” 142.414” 106.716” $3,801.60
42” 148.414” 112.716” $3,899.82
48” 154.414” 118.716” $3,998.04
54” 160.414” 124.716” $4,096.24
78” 77.8125” 120” 24” 138.656” 99.724” $3,799.19
30” 144.656” 105.724” $3,897.42
36” 150.656” 111.724” $3,995.64
42” 156.656” 117.724” $4,093.86
48” 162.656” 123.724” $4,192.08
54” 168.656” 129.724” $4,290.28
84” 83.8125” 126” 24” 146.872” 104.088”
$3,993.23
30” 152.872” 110.088” $4,091.46
36” 158.872” 116.088” $4,189.68
42” 164.872” 122.088” $4,287.90
48” 170.872” 128.088” $4,386.12
54” 176.872” 134.088” $4,484.32
List prices are for carbon steel alternating tread stairs with standard powder coat colors.
For a budgetary estimate on additional options, increase the list price by the applicable percent*

+16%

CUSTOM COLOR
OR GALVANIZED

+89%

STAINLESS
STEEL

+25%

ALUMINUM
(68° ONLY)

*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. List prices are all-inclusive based on standard options. Prices do not include installation hardware or shipping costs. Calculations for additional options on alternating tread stair crossover systems are for budgetary purposes only; contact us for an exact quote.

List prices for standard stair crossover systems

  • The CLEARANCE WIDTH and OVERALL WIDTH for all alternating tread stair systems is 24"
  • The PLATFORM SPAN is equal to the CLEARANCE SPAN on all alternating tread stair systems
  • The OVERALL HEIGHT is the stair height plus 42"
  • The CLEARANCE HEIGHT is the stair height minus 3/16"
  • The minimum height for alternating tread stair systems with 56° stairs is 30"
  • The minimum height for steel alternating tread stair systems with 68° stairs is 36"
  • Aluminum alternating tread stair systems with 68° stairs are available in heights starting at 24"

Crossover catalog

56° STAIRS 68° STAIRS
STAIR
HEIGHT
PLATFORM/
CLEARANCE SPAN
OVERALL
LENGTH
OVERALL
LENGTH
LIST
PRICE
30” 24” 81.85” $2,440.91
30” 87.85” $2,539.14
36” 93.85” $2,637.36
42” 99.85” $2,735.58
48” 105.85” $2,833.80
54” 111.85” $2,932.00
36” 24” 90.214” 70.15” $2,634.95
30” 96.214” 76.15” $2,733.18
36” 102.214” 82.15” $2,831.40
42” 108.214” 88.15” $2,929.62
48” 114.214” 94.15” $3,027.84
54” 120.214” 100.15” $3,126.04
42” 24” 98.5” 75.322” $2,828.99
30” 104.5” 81.322” $2,927.22
36” 110.5” 87.322” $3,025.44
42” 116.5” 93.322” $3,123.66
48” 122.5” 99.322” $3,221.88
54” 128.5” 105.322” $3,320.08
48” 24” 106.74” 80.402” $3,023.03
30” 112.74” 86.402” $3,121.26
36” 118.74” 92.402” $3,219.48
42” 124.74” 98.402” $3,317.70
48” 130.74” 104.402” $3,415.92
54” 136.74” 110.402” $3,514.12
54” 24” 106.74” 80.402” $3,023.03
30” 112.74” 86.402” $3,121.26
36” 118.74” 92.402” $3,219.48
42” 124.74” 98.402” $3,317.70
48” 130.74” 104.402” $3,415.92
54” 136.74” 110.402” $3,514.12
60” 24” 113.822” 84.556”
$3,217.07
30” 119.822” 90.556” $3,315.30
36” 125.822” 96.556” $3,413.52
42” 131.822” 102.556” $3,511.74
48” 137.822” 108.556” $3,609.96
54” 143.822” 114.556” $3,708.16
66” 24” 122.14” 89.664”
$3,411.11
30” 128.14” 95.664” $3,509.34
36” 134.14” 101.664” $3,607.56
42” 140.14” 107.664” $3,705.78
48” 146.14” 113.664” $3,804.00
54” 152.14” 119.664” $3,902.20
72” 24” 130.414” 94.716”
$3,605.15
30” 136.414” 100.716” $3,703.38
36” 142.414” 106.716” $3,801.60
42” 148.414” 112.716” $3,899.82
48” 154.414” 118.716” $3,998.04
54” 160.414” 124.716” $4,096.24
78” 24” 138.656” 99.724” $3,799.19
30” 144.656” 105.724” $3,897.42
36” 150.656” 111.724” $3,995.64
42” 156.656” 117.724” $4,093.86
48” 162.656” 123.724” $4,192.08
54” 168.656” 129.724” $4,290.28
84” 24” 146.872” 104.088”
$3,993.23
30” 152.872” 110.088” $4,091.46
36” 158.872” 116.088” $4,189.68
42” 164.872” 122.088” $4,287.90
48” 170.872” 128.088” $4,386.12
54” 176.872” 134.088” $4,484.32

List prices are for carbon steel alternating tread stairs with standard powder coat colors.

For a budgetary estimate on other options, increase the list price by the applicable percent*

+16%

CUSTOM COLOR
OR GALVANIZED

+89%

STAINLESS
STEEL

+25%

ALUMINUM
(68° ONLY)

*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. List prices are all-inclusive based on standard options. Prices do not include installation hardware or shipping costs.

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