A beam clamp is an attachment that grips an identified structural beam or flange to carry a specified hanger assembly. In suspended piping, it can connect the hanger rod to the structure above. Its capacity and permitted arrangement depend on the clamp model, supporting member and complete load path.
A beam clamp is an attachment that grips an identified structural beam or flange to carry a specified hanger assembly. In suspended piping, it can connect the hanger rod to the structure above. Its capacity and permitted arrangement depend on the clamp model, supporting member and complete load path.
The attachment above the hanger matters
A clevis hanger cradles the pipe. The rod and upper attachment transfer that load to the building structure. A beam clamp performs that upper attachment function in a suitable arrangement; it is not the loop around the pipe itself.
ASC Engineered Solutions' Fig. 94 is a specific example. Its submittal describes a wide-throat top beam clamp for bar-joist construction or a structural top flange where the vertical rod must be offset from the flange edge. Other clamp designs have different geometry and applications.
This distinction helps when an exposed pipe support appears to lean. The visible hanger may be intact while its attachment or supporting member needs attention. Replacing the loop alone does not establish that the load can safely reach the structure.
Rod size is only one selection detail
The Fig. 94 documentation identifies particular rod sizes, a ductile-iron body, a set screw and a locknut. Its listed loads and installation requirements belong to that product. They do not supply a universal rating for every clamp that fits the same rod.
The supporting flange geometry, rod position, finish and operating conditions also need to match the specified assembly. ASC directs the installer to the recommended set-screw torque requirements. A screw that seems tight by hand is not evidence that the attachment meets its instructions.
A component's catalog capacity does not prove that the existing beam, joist or other structural member can accept the proposed load. The installer must also account for the pipe, contents and any other designed loads. The pipe support spacing guide answers the separate question of where supports are required along the pipe.
What to ask about a questionable attachment
From a safe location, note a displaced clamp, leaning rod, visible corrosion or sagging pipe. Give the contractor the pipe material, size, insulation details and any readable clamp identification. Photographs can show the arrangement without disturbing it.
The pipe insulation shield entry addresses the contact detail at an insulated pipe, below the upper attachment.
Ask which clamp and rod are specified, what member carries them and whether that member and attachment have been checked for the load. For vertical piping, a riser clamp may use a different designed support path.
Do not loosen, slide or retighten an attachment carrying a loaded pipe to investigate a noise. Keep clear of visibly failed suspended piping and have it secured by a qualified installer before anyone works beneath it.