Pultruded FRP Grates offer higher strength characteristics and are ideally suited for heavier loads across longer spans than molded grating. The composite matrix of pultruded grating utilizes a higher fiberglass content to resin ratio resulting in a stiffer grate but with less corrosion resistance.  Pultruded grating is a unidirectional structure and being an assembled product, allows for larger panel sizes for better utilization.

Load Bars: Pultruded grates are constructed of a series of independent load bars with either an "I" or "T" profile.

"I" bars are typically used for industrial applications having a higher load capability

"T" bars are typically used for pedestrian applications having a wider walking surface.

Open area between the load bars can be as high as 60% or as small as 12% depending on your application and loading.

FRP Pultruded Walkway atop Charlotte Motor Speedway

Resin Systems:  available in two resin formulations both containing a fire retardant that offers an ASTM-E84 flame spread rating of 25 or less. 

ISOFR  Isophthalic Polyester Fire Retardant  Yellow / Dark Gray used for moderately corrosive environments

VEFR   Vinyl Ester Fire Retardant  Yellow / Dark Gray          used for highly corrosive environments

                         Typical "I" bar Industrial pultruded grating with gritted surface.  

Industrial Grating Details

Typical "T" Bar Pultruded Grating with Quartz Grit Surface

Pedestrian Grating Details