338
Fundamentals of Corrosion
wide range of materials that may spill on the surface. Complete corrosionresistance properties can be found in Corrosion Resistance Tables, 5th ed., published by Marcel Dekker.
The glass-reinforced polyester and vinyl ester resin structures are nonconductive. As such, they are neither thermally nor electrically conductive.
Consequently, they are ideally suited to be used as cable trays, utility truck
booms, ladders, support structures for electrical devices and systems, and
power junction boxes.
On a pound-for-pound basis, these fiber-reinforced plastic (FRP) materials are stronger than steel. Shapes have been used to form superstructures
for multistory buildings and floating bridges. Joining is accomplished using
fiberglass studs and nuts. The threads are standardized to be compatible
with metal studs.
FRP structural shapes are very light in weight, which permits them to be
easily transported, handled, and set into place. They weigh 80% less than
a corresponding steel shape and 30% less than a corresponding aluminum
shape.
When properly designed, these materials will not sag or creep under prolonged deformation or loading. Their coefficient of thermal expansion is
slightly less than that of aluminum or wood.
Considering the foregoing properties, these materials are ideal for structural supports and decking to resist atmospheric corrosion. These shapes,
handrails, decking, and such are available in color, with the color completely
penetrating the material. This eliminates the need for periodic painting for
protection or aesthetic reasons and greatly reduces the maintenance needs of
these materials compared to those of their metallic counterparts. Initial purchase price may be slightly higher than the purchase price for steel but the
final installed cost, including maintenance costs, makes the total installation
highly competitive with less expensive materials.
Typical uses for FRP materials include:
Ladders
•
Handrails
•
Support structures
•
Walkways
•
Operating platforms
•
Roof supports and decking
•
Pipe supports
•
Stairs
•
Cable trays
•
Grating
•
Enclosures
•
Fundamentals of Corrosion
wide range of materials that may spill on the surface. Complete corrosionresistance properties can be found in Corrosion Resistance Tables, 5th ed., published by Marcel Dekker.
The glass-reinforced polyester and vinyl ester resin structures are nonconductive. As such, they are neither thermally nor electrically conductive.
Consequently, they are ideally suited to be used as cable trays, utility truck
booms, ladders, support structures for electrical devices and systems, and
power junction boxes.
On a pound-for-pound basis, these fiber-reinforced plastic (FRP) materials are stronger than steel. Shapes have been used to form superstructures
for multistory buildings and floating bridges. Joining is accomplished using
fiberglass studs and nuts. The threads are standardized to be compatible
with metal studs.
FRP structural shapes are very light in weight, which permits them to be
easily transported, handled, and set into place. They weigh 80% less than
a corresponding steel shape and 30% less than a corresponding aluminum
shape.
When properly designed, these materials will not sag or creep under prolonged deformation or loading. Their coefficient of thermal expansion is
slightly less than that of aluminum or wood.
Considering the foregoing properties, these materials are ideal for structural supports and decking to resist atmospheric corrosion. These shapes,
handrails, decking, and such are available in color, with the color completely
penetrating the material. This eliminates the need for periodic painting for
protection or aesthetic reasons and greatly reduces the maintenance needs of
these materials compared to those of their metallic counterparts. Initial purchase price may be slightly higher than the purchase price for steel but the
final installed cost, including maintenance costs, makes the total installation
highly competitive with less expensive materials.
Typical uses for FRP materials include:
Ladders
•
Handrails
•
Support structures
•
Walkways
•
Operating platforms
•
Roof supports and decking
•
Pipe supports
•
Stairs
•
Cable trays
•
Grating
•
Enclosures
•