Caged Ladder Worksheet

Design

Fiberglass Reinforced Plastic (FRP) Safety Caged Ladders are designed engineered and custom fabricated by Structural Fiberglass Incorporated (SFI) in accordance with OSHA standards, Section 1910.27, entitled “Fixed Ladders”. Rung to side rail connections are bonded and pinned with a dowel rod to prevent any possibility of rung rotation and pullout.
SFI FRP Ladders are fabricated from fiberglass pultrusions that have a Class 1 fire retardant, with and ASTM E-84 flame spread rating of 25 or less.

Materials

FRP Safety Caged Ladders are fabricated from the following “Safety Yellow” color FRP pultrusions with a fire retardant polyester resin, 50% glass content and surface veil for protection against ultraviolet attack.

Ladder Side Rails = 1-3/4″ x 1-3/4″ x 1/4″ Square Tube.
Ladder Rungs = 1 1/4″ Diameter x 0.160 Fluted Rungs or 1 1/4″ x 1/4″ Square Tube Rung with Factory applied Epoxy based non-skid grit surface.
Ladder Dowel Pin = 1/4″ Dia. Solid Round Rod.
Safety Cage Horizontal Hoops = 4″ x 1/8″ Flat Bar.
Safety Cage Vertical Bars = 2-1/2″ x 3/16″ Flat Bar.
Safety Cage Clips = 5″ x 2-3/4″ x 1/2″ x 0′ – 4″ Angle.
Safety Cage Hardware = 316 Truss Head 3/8″ Dia Knurled Bolt with Flanged Nut.
Ladder Standoff Clips = 8″ x 2-3/16″ x 3/8″ x 0′ – 4″ Angle.
Ladder Base Clips 3″ x 3″ x 3/8″ x 0′ – 1-3/4″ Long Angle.
Ladder hardware = 316 Stainless steel, 3/8″ dia. bolts, nuts and washers.