industrial & municipal fiberglass fabrication

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Glass•Steel®, Inc. fiberglass fabrication

Custom Fabrication

Contact Glass-Steel®, Inc. to discuss your project requirements, specifications and custom fabrication needs.

Need a Fiberglass Troughs Solution?


Curved wall mounted trough installed with weirs & baffles

Fiberglass Troughs Technical Brochure


Curved Trough with block out for drop out trough. Shows tongue end and integral recess for attachment of drop out trough.

Trough Features + Specifications

Glass•Steel® fiberglass composite troughs for water and wastewater treatment applications

Custom FRP Troughs for Water + Wastewater Treatment

Glass-Steel®, Inc. composite troughs utilize a glass-reinforced fiberglass skin on the inner and outer surfaces with a polymer concrete core. Typical trough walls are 1-1/2 inches thick with 1/8-inch fiberglass skins, although different thicknesses can be produced to meet project requirements.

The system is fabricated with isophthalic polyester resin. The sandwich-type construction acts as a monolithic unit, with components designed to have the same coefficient of thermal expansion. Vinylester, epoxy and other resin systems are also available.

Straight Trough

Top trough shows tongue end of tongue & groove, bottom trough shows square end for saddle mount

CUSTOM FRP TROUGH SYSTEMS

Fiberglass Troughs Applications

Fiberglass composite troughs, scum baffles, and weir plates for water and wastewater treatment applications

Rocklin, CA troughs fixed one end supported by steel beam on other end.

  • Circular + Rectangular Clarifiers
  • Grit Collectors
  • Sedimentation Basins
  • Thickeners
  • Filter Systems
  • Water Treatment Plants
  • Wastewater Treatment Plants
  • Industrial Water Applications
  • Effluent Collection
  • Custom Flow-Control Applications

Glass-Steel®, Inc. fiberglass composite troughs are available in round bottom, square bottom, J-shape and V-bottom configurations and can be fabricated as straight or curved sections.

Custom troughs can also be fabricated with tapered sides and/or bottoms. Side-mount trough designs can eliminate the need for forming and pouring extended concrete wall troughs.

Glass-Steel, Inc. also custom fabricates drop troughs, drop boxes, stub-outs, integrated flanges and other trough accessories to meet project requirements.

  1. Round Bottom Troughs
  2. Square Bottom Troughs
  3. J Troughs
  4. V-Bottom Troughs

Fiberglass Composite Troughs

Designed for Performance

What are fiberglass composite troughs used for?

Fiberglass composite troughs are used for water collection and flow applications in water and wastewater treatment facilities. Common applications include clarifiers, grit collectors, sedimentation basins, thickeners and filter systems.

What fiberglass trough shapes are available?

Glass•Steel®, Inc.fabricates round bottom, square bottom, J-shape and V-bottom troughs. Troughs can be produced in straight or curved sections, and custom configurations are also available.

What makes Glass•Steel® composite troughs different from conventional fiberglass troughs?

Glass•Steel® composite troughs utilize fiberglass skins with a polymer concrete core to create a monolithic composite structure designed for strong structural performance and long clear spans.

Do fiberglass troughs require spreader bars or lateral supports?

Glass•Steel® composite trough designs do not require spreader bars or lateral supports. This provides a smooth, uninterrupted interior and eliminates internal trip hazards for maintenance personnel.

Can Glass•Steel®, Inc. fabricate custom troughs?

Yes. Glass•Steel®, Inc. can fabricate custom sizes and configurations, including tapered sides or bottoms, side-mount troughs, drop troughs, drop boxes, stub-outs, integrated flanges and other accessories.

Are NSF 61 trough designs available?

Yes. NSF 61 trough designs are available for projects that require them.

Rocklin, CA troughs supported on steel beams. 12" wide x 18" deep trough spanning 24'0". Ends not fixed.

  • Fiberglass composite construction with polymer concrete core
  • Custom sizes and configurations
  • Round bottom, square bottom, J-shape and V-bottom designs
  • Straight or curved sections
  • Isophthalic polyester resin construction
  • Vinylester, epoxy and other resin systems available
  • Long clear-span capabilities
  • Smooth, uninterrupted inside and outside surfaces
  • Spreader bars are not required
  • Lateral supports are not required
  • Engineered for easier installation and maintenance
  • NSF 61 designs available
  • Standard 5-year warranty; 10-year warranty available upon request
  • Each Glass•Steel®, Inc. trough is customer specified
  • In many installations, troughs can support other equipment

Download the Troughs Brochure to view product information, configurations, specifications and technical details for

Glass-Steel®, Inc. fiberglass launder cover systems.

Chalk Bluff, NV trough with blind end and wall saddle mount

Curved Trough

Trough shows groove end of tongue & groove

The mass and construction of Glass-Steel®, Inc. composite troughs eliminate the need for spreader devices or exterior bracing. Depending on trough size and configuration, designs can provide long clear spans without intermediate supports or lateral stabilizers.

The smooth, uninterrupted interior also allows maintenance personnel to walk within the trough without the trip hazards created by internal spreader bars.

For rectangular clarifiers and other applications where troughs may exceed 50 feet in length, an end support and at least one intermediate support may be required.

Frequently Asked Questions


Curved wall mounted trough, shows groove end of tongue & groove

Flat Bottom Troughs


Curved wall mounted trough, with hole for drop out box

Drop out Trough Integral end mounts

Glass•Steel®, Inc. fabricates a proprietary system of fiberglass composite effluent troughs for water collection in water and wastewater applications. Troughs are commonly used in clarifiers, grit collectors, sedimentation basins, thickeners, filter systems and other treatment applications.

Glass•Steel®, Inc. composite troughs provide an alternative to precast or cast-in-place concrete, aluminum, stainless steel, galvanized or painted steel, and conventional fiberglass troughs.


Curved wall mounted trough with drop out box

Materials + Construction

Troughs - For Water, Wastewater, and Industrial Applications

ENGINEERED

FIBERGLASS

SOLUTIONS

Chalk Bluff, NV troughs anchor bolted to effluent end

Glass·Steel®, Inc. fiberglass composite stop logs brochure for water and wastewater applications