Laminated Dock Bumper B610-12

For specifiers and bid writers. Based on ARCAT Section 11165, Dock Bumpers, referencing Durable Corporation products.

A. Manufacturer

1. Design is based on products manufactured by Durable Corporation, 75 North Pleasant Street, Norwalk, OH 44857.
2. Type: Loading dock bumper shall be a laminated rubber bumper with fabric-reinforced rubber pads laminated between structural steel angles, secured with 3/4" steel supporting rods; anchor bolts protected by rubber.

B. Product Characteristics

1. Product: Laminated Dock Bumper — Model B610-12.
2. Projection from dock face: 6". Vertical height: 10". Rubber width: 8". Bolt hole centers: 12". Overall width: 14".
3. All bumpers shall be 6" thick (projection from dock) and closed with two 1/4" × 3" × 4" × 9-1/2" structural steel angles under approximately 1,500 lbs of pressure. The angles are welded to 3/4" rods at one end and closed with threaded rod and nut at the other. The laminated section is through-bolted with 2 carriage bolts at positions matching the anchor bolt locations.
4. The anchor leg of each angle extends a minimum of 3" beyond the rubber surface and contains 2 13/16" anchor bolt holes.
5. Weight: approximately 27 lbs.
6. Finish for exposed metal parts: black, or hot-dipped galvanized (additional cost).

C. References

ASTM D 624 — Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers.
ASTM D 2632 — Standard Test Method for Rubber Property — Resilience by Vertical Rebound.

D. Submittals

Submit manufacturer’s data sheets including preparation instructions, storage/handling requirements, and installation methods, under provisions of Section 01300.

E. Warranty

Durable Corporation warrants this bumper against defective workmanship and material for five (5) years from date of purchase. Product damage from unusual abuse, improper installation, or other external factors is not covered. Adjustments under this warranty after two (2) years are made on a pro-rated basis. Remedy is limited to a replacement bumper of the same specifications; Durable is not responsible for additional costs incurred, including installation.

F. Execution

Install in accordance with manufacturer’s instructions. Position bumpers as indicated on drawings. Secure angle end frames to dock face of: concrete, steel angle embedded in concrete, steel plate embedded in concrete, or timber. Do not begin installation until substrates are properly prepared; notify Architect of unsatisfactory substrate preparation before proceeding. Protect installed products until Substantial Completion; touch up, repair, or replace damaged products before turnover.

The B610-12 requires no routine maintenance. Periodic inspection keeps problems from becoming structural:

Rubber pad separating from the steel angles:

• Confirm the bumper was mounted with angles on the bottom and sides, not on top. Top-mounting is the leading cause of early pad separation and voids the warranty.
• If mounting was correct, the unit has reached the end of its service life. Replace rather than attempt to re-bond.

Trailer contacting the dock face despite bumpers being present:

• Verify the approach is flat. A sloped approach requires more projection — 1" per 1% of slope beyond 4.5". See Extra-Thick Bumpers if your dock is sloped.
• Check that the bumper has not been permanently compressed. Measure actual projection from the dock face and compare to the specified 6".

Anchors pulling out or loosening:

• Confirm 3-1/4" minimum embedment was achieved. Under-embedded anchors will not reach rated holding strength regardless of torque applied.
• Inspect concrete around each anchor for cracking. Deteriorated concrete requires epoxy anchoring or substrate repair before re-anchoring.

• ASTM D 624 — Tear strength of vulcanized rubber and thermoplastic elastomers.
• ASTM D 2632 — Rubber resilience by vertical rebound.

Durable Corporation warrants the B610-12 against defective workmanship and material for five (5) years from date of purchase. Product damage from unusual abuse, improper installation (including top-mounting of angles), or other external factors is not covered. Adjustments under this warranty after two (2) years are made on a pro-rated basis. If a bumper is determined to be defective within the warranty period, Durable will provide a replacement bumper of the same specifications; Durable is not responsible for any additional costs incurred, including installation. Warranty claims are reviewed by Durable on a per-case basis — direct claims to us with documentation, including photos if available.