Bolt-together Models 01/02

Our bolt-together Models 01AA and 02AA are designed for the following applications:

  • Industrial egress stairs
  • Industrial equipment and mezzanine access stairs
  • Industrial secondary access stairs

Model 01AA is for stairs up to 12 feet, and Model 02AA is for stairs between 12 feet and 20 feet.

Consult this table for more information on applications.

Advantages of Bolt-together Stair Systems

Our bolt-together systems are the simplest and most cost-effective stair solutions available.

  • Because the engineering and design capabilities are built into our computer system, we can provide you with pricing and project drawings within minutes over the phone.
  • Bolt-together stairs can be shipped completely unassembled, greatly reducing shipping costs compared to welded stair systems.
  • Bolt-together stairs require no welding or expensive installation equipment and can be assembled within compact spaces.

Rail Options

All BOCA compliant stairs include the BOCA rail design. The OSHA compliant stair includes the OSHA railing design; however, you may choose the BOCA railing and still meet OSHA requirements. If you are using your own wall rail system, you have the option of purchasing the stair without one or both rails. The BOCA rail design is also used on all NFPA, SBCCI, and UBC Industrial stairs.

  • Top and bottom extensions on rail meet BOCA requirements.
  • Flexible baluster spacing, custom designed to meet the code you request. Adjustable within the confines of the building code.
  • Rail and baluster ends press punched.
  • Rails capable of withstanding a 200 pound load applied in any direction.
  • Rail and balusters constructed from 1-1/2" OD tube.
  • Balusters attach to stringers using provided bolts and spacers.
 BOCA Rails

View sample prints
  • Flexible baluster spacing, custom designed to meet the code you request. Adjustable within the confines of the building code.
  • Baluster ends press punched.
  • Rail end caps molded from low density polyethylene. Optional Steel cap available
  • Rails capable of withstanding a 200 pound load applied in any direction.
  • Rail and balusters constructed from 1-1/2" OD tube.
  • Balusters attach to stringers using provided bolts and spacers.
 OSHA rails

View sample prints


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Tread Options

The diamond plate tread provides a solid tread surface with raised diamonds for a non-skid effect. We manufacture these treads in our facility and are able to accommodate custom width requests.

Table 3: Diamond Treadplate Tread Details
Material Carbon Steel
Stair Finishes Choice of 5 Finishes
Widths 24”, 30”, 36”, 48”, and Custom Widths
Depths 9¾”, 10-15/16”, and 12-1/8”
Sample Prints View Pdf
 

The most aggressive non-skid surface of our tread options, this grip tread is available in our standard widths.

Table 4: Grip Tread Details
Material Carbon Steel
Stair Finishes Choice of 5 Finishes
Widths 24”, 30”, 36”, 48”
Depths 9-1/2”, 11-7/8
Sample Prints View Pdf
 

If your application requires concrete treads, you may select concrete pan treads manufactured here in our facility. We use the underside of the diamond tread plate to create the pan, with the diamond plate wrapped around the front edge to create a diamond tread plate nosing. The pan treads are available in the same widths as our other treads, or you may choose a custom width. The pans are provided ready to install and ready for your site poured concrete.

Table 5: Concrete Pan Details
Material Carbon Steel
Stair Finishes Choice of 5 Finishes
Widths 24”, 30”, 36”, 48”, and Custom Widths
Depths 9-3/4”, 10-15/16”, and 12-1/8”
Sample Prints View Pdf
 

Our bar grating treads are ideal for your industrial applications. The serrated grating provides a skid-resistant surface. Each tread has a diamond plate nosing.

Table 6: Bar Grating Treads Details
Material Carbon Steel
Stair Finishes Choice of 5 Finishes
Widths 24”, 30”, 36”, 48”
Depths 9-3/4”, 10-15/16”, and 12-1/8”
Sample Prints View Pdf
 

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Stringer

Constructed of 10-foot or 12-foot channel, depending on height and angle.


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Stair Design Details

  • Safety yellow powder coat
  • Iron gray powder coat
  • Gray primer powder coat
  • Hot dip galvanized
  • Choice of 180 colors powder coat

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Dimensions

Table 2: 01AA/02AA Stair Dimensions
Configuration Minimum* Maximum*
Stair Height 18" 144"
Stair Height (OSHA) 18" 240"
Stair Angle (up to 10'3") 25° 50°
Stair Angle (above 10'4") 29° 50°
Riser Height 4" 10"
Stair Rail Height 30" 43"
Baluster Spacing
(Spherical Clearance)		 3.75" 36"
Tread Width
(Inside Stair Width) 		24" 48"
* Varies by Building Code. Your minimum/maximum requirements may vary.

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*Building Codes

Stair Model 01AA is designed around the following building codes. Stair Model 02AA only complies with OSHA, as it exceeds the maximum stair height of 12’ under the building codes.

  • OSHA
  • BOCA
  • NFPA Industrial
  • SBCCI Industrial
  • UBC Industrial

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Assembly Options

  • Unassembled: We recommend unassembled. The stair is very simple to assemble and install. This is the most economical option, saving both on shipping costs and the stair purchase price. All assembly hardware is provided.
  • Tread/Stringer Assembly: We will attach the treads to the stringers for you and ship the rails ready to install. You simply add the rails into the stringers and bolt them in place before installing the stair. All assembly hardware is provided.
  • Unassembled: We will attach the balusters and stair rail to the stringers for you and ship the treads separately. You add the treads to the stringer before installing. All assembly hardware is provided.

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Back-Pan

Optional. Most stairs are equipped with cross bracing connecting the two stringers behind the treads. You may choose to replace the standard cross bracing with a set of catch-pans that will prevent any object or dirt from falling to the ground below.

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