Versiflex™ Elastomeric Bearing Assemblies are molded neoprene or natural rubber pads used for isolating and supporting structures or equipment.
Answer: AASHTO LRFD Bridge Construction Specifications, Section 18.2.6 states that there must be at least 1.5" of steel between elastomer and weld. If welding directly above the elastomeric bearing then the plate thickness must be at least 1.5". If the weld is outside of the plan area of the elastomeric bearing, then the distance heat has to travel must be 1.5" or more. This section also states that in no case shall the elastomer or bond be subjected to a temperature higher than 400°F. This temperature greatly exceeds the internal core temperature during the molding process. Therefore, surfaces in contact with the elastomer should be limited to 200-225°F during field welding and monitored with the use of pyrometric sticks or other suitable means.
Learn more about D.S. Brown Structural Bearing Assemblies
Since 1963, The D.S. Brown Company has provided structural bearing assemblies and joint seals for bridges around the globe. Bridges and other large structures are supported on bearing assemblies to transmit forces while accommodating all structural movements.
The selection of an appropriate bearing assembly is based on the magnitude of vertical and horizontal forces transmitted through the bearing assembly, as well as the amount of displacement and rotation of the superstructure elements. In addition, special attention to the bearing assembly design may be necessary when, for example, larger than normal horizontal loading or uplift situations exist.