Bolt-A-Plate®

Strong • Economical • Lightweight

Bolt-A-Plate® is ideal for new site developments, county stream crossings, as well as urban rehabilitations. It maintains natural streambeds and reduces environmental impacts. Bolt-A-Plate® structures are effectively utilized as strong and economical alternatives to elaborate bridge replacements.

Bolt-A-Plate® is ideal for:

• Wetland crossings
• Underpasses
• Culverts
• Stream enclosures
• Fishways
• Bridge replacements
• Conveyor tunnels

Bolt-A-Plate® Structural Shapes and Details

Arches — Standard and Low Profile anchored on footings are ideal for installations where there is limited headroom and low height of cover restrictions. They are especially useful in sites where it is desirable to maintain natural stream beds and are widely used for stream enclosures, culverts and storm sewers.

High Profile arches are engineered to maintain a natural waterway and allow for an abrasive bedload. Additionally, these arches are ideal for projects that include large end areas or large spans. The high profile arch is also used for highway grade separations.

Clearance Box sizes are available from your local Big R Bridge representative.

Pear Shape is generally used for railway tunnels and underpasses. With proper end treatment, Bolt-A-Plate® provides access and protects the environment from erosion problems.

Round Pipe is the most common and versatile of the Bolt-A-Plate® shapes. This shape is used primarily for culverts, sewers and sub-drains, but is also appropriate for storage bins, tunnels and bridges.

Pipe-Arch is ideal for bridges and underpasses with limited overhead clearance. Pipe-arch’s unique shape provides hydraulic advantages at low flow rates for culverts and sewers.

Elliptical shapes are commonly used for underpasses and service tunnels. The horizontal ellipse is better suited for multi-lane, vehicular underpasses, while the vertical ellipse shape is more appropria te for single lane vehicular and railway underpasses.

Shapes and Details

	Corrugation Profile
	Standard Arch
	Pipe Arch
	Horizontal Ellipse
	Underpass Shape
	Round

	Low Profile Arch
	High Profile Arch
	Pear Shaped Underpass
	Vertical Ellipse
	Foundation Options and Details

Bolt-A-Plate® Design and Installation

Bolt-A-Plate® structures are rapidly becoming the product of choice for high strength, economical, bridge and underpass construction. Our engineers are on call to provide complete project assistance and product support from start to finish.

Structural Design

If designed properly, the combination of structural steel and surrounding soil allows Bolt-A-Plate® to support extremely heavy loads. Standard designs are developed in accordance with AASHTO, ASTM or The Handbook of Steel Drainage and Highway Construction Products. However, design assistance and recommendations can be specified to your project. Contact your local Big R Bridge sales representative for assistance.

Site Investigation and Preparation

A thorough site investigation should be conducted before installing a Bolt-A-Plate® structure. If footings are to be used, the foundation will have to be capable of supporting vertical and horizontal loads developed by the structure. The aim is to design a structurally sound foundation that will allow the structure to develop full interaction between soil and steel culvert.

Site preparation should provide a solid base for the structure. It should be good quality material, free from rocks, roots, debris, and organic material. Scouring must be considered when designing a Bolt-A-Plate® structure. Big R Bridge gladly offers technical assistance on foundation investigation and site preparation for varying site conditions.

Assembly

Big R Bridge Bolt-A-Plate® structures arrive at the site ready for assembly and, in special situations, structures may be fully assembled. Every Bolt-A-Plate® structure comes complete with a detailed plan and installation instructions. Experienced supervision, when required, will ensure correct, efficient assembly. Upon request, Big R Bridge can provide on-site supervision for installation of any structure it supplies.

Print Version
1.17 MB PDF

Bolt-A-Plate Specifications
40 KB Microsoft Word file

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