Middle Atlantic 3 BAY Seismic RIB WRK 32D 24H - SRB-3-WRK-3224

Middle Atlantic SRB-3-WRK-3224 3-Bay Seismic Riser Base for WRK Racks

Overview

The Middle Atlantic SRB-3-WRK-3224 is a three-bay seismic riser base engineered specifically for the WRK rack series, delivering a 2,450 lb (1,111.3 kg) seismic load capacity in a 32-inch-deep, 24-inch-tall footprint. If your installation falls under ASCE 7-10 seismic requirements or OSHPD jurisdiction (certification 96-01027), this base is one of the direct-answer solutions for code-compliance without custom engineering. At 72.75 inches wide across three bays, the SRB-3-WRK-3224 (often searched as SRB 3 WRK 3224) handles multi-rack rows in broadcast, healthcare, and enterprise AV/IT environments where seismic bracing is a permit condition, not an afterthought.

Key Features

• 2,450 lb Seismic Load Capacity: Supporting over 1,100 kg of distributed rack load means a fully populated three-bay WRK installation — dense with UPS units, switches, and A/V gear — stays within a single certified base. No need to engineer a custom solution or split the load across multiple uncertified components.
• ASCE 7-10 Compliance: ASCE 7-10 is the structural load standard referenced by most U.S. building codes for seismic design. A base carrying this certification simplifies AHJ approval — your structural engineer gets a document number, not a field calculation to validate.
• OSHPD Certification 96-01027: California's Office of Statewide Health Planning and Development requires pre-approved equipment for hospital and healthcare facility installations. The OSHPD number on this base satisfies that pre-approval requirement directly, avoiding the separate submittal process that uncertified equipment requires.
• 32-Inch Depth Matches WRK Series: Paired to the WRK rack's 32-inch depth, the base footprint aligns flush — no overhang, no shimming, no mismatched anchor points. This matters on raised-floor data centers and finished equipment rooms where aesthetics and cable routing are both in scope.
• 24-Inch Height Adds Usable Elevation: The 24-inch riser height positions rack equipment above finished floor level. In facilities with under-floor cooling or cabling, this clearance simplifies infrastructure routing without requiring a separate plenum platform or custom riser fabrication.
• Textured Black Powder Coat Finish: The finish matches the WRK rack series aesthetic for consistent appearance in customer-facing or inspection-ready equipment rooms. Powder coat also resists chipping during installation better than painted surfaces — relevant when you are sliding heavy rack sections into position.
• 72.75-Inch Three-Bay Width: Spanning just under 73 inches, this base accommodates a standard three-rack row without requiring aisle-side anchoring hardware or intermediate supports. The single-unit footprint simplifies the seismic anchor plan to four corner points.

Integration & Compatibility

The SRB-3-WRK-3224 is designed for the Middle Atlantic WRK rack series. Verify bay count and rack depth match your specific WRK configuration before ordering — this base is sized for three-bay, 32-inch-deep deployments. For single- or two-bay seismic applications, or for 26-inch-depth WRK variants, Middle Atlantic offers other SRB configurations within the rack accessories line. Anchor hardware requirements and floor-penetration patterns should be confirmed against the installation documentation for your specific facility's seismic zone. Consult a rack infrastructure planning resource or structural engineer for zone-specific anchor torque and embedment specs.

Frequently Asked Questions

Q: What rack series is the SRB-3-WRK-3224 designed to work with?

A: The SRB-3-WRK-3224 is designed specifically for the Middle Atlantic WRK rack series. It is sized for a three-bay, 32-inch-deep configuration and should not be used as a universal base for other rack series without verifying dimensional compatibility.

Q: What seismic load capacity does the SRB-3-WRK-3224 support?

A: The SRB-3-WRK-3224 is rated for a seismic load capacity of 2,450 lbs (1,111.3 kg), distributed across the three-bay footprint.

Q: Does the SRB-3-WRK-3224 meet OSHPD requirements for healthcare installations?

A: Yes. The SRB-3-WRK-3224 carries OSHPD certification number 96-01027, which satisfies pre-approval requirements for hospital and healthcare facility equipment installations in California.

Q: Which ASCE standard does the SRB-3-WRK-3224 comply with?

A: The SRB-3-WRK-3224 complies with ASCE 7-10, the standard for Minimum Design Loads for Buildings and Other Structures, which is the seismic design reference cited in most U.S. building codes.

Q: What are the overall dimensions of the SRB-3-WRK-3224?

A: The base measures 72.75 inches wide (184.8 cm), 32 inches deep (81.3 cm), and 24 inches tall (61 cm).

Q: What finish does the SRB-3-WRK-3224 come in?

A: The SRB-3-WRK-3224 has a textured black powder coat finish, consistent with the WRK rack series aesthetic.

Ted Perry

When I spec the SRB-3-WRK-3224 into a project, the OSHPD 96-01027 certification is usually the deciding factor — healthcare AV integrators in California know how much time a pre-certified base saves versus pushing an unlisted product through the OSHPD submittal process. The 2,450 lb rated capacity means even a fully loaded three-bay WRK row with redundant UPS and dense switching sits comfortably within the certified envelope.

Technical Highlights:

• 2,450 lb Seismic Load Capacity: At 1,111.3 kg, this rating covers the heaviest three-bay WRK configurations you are likely to build — broadcast, medical imaging control rooms, dense enterprise wiring closets — without exceeding the certified load envelope.
• ASCE 7-10 Compliance: This is the structural standard AHJs and structural engineers expect to see cited. Having the ASCE number documented on the product means your permit package references a known standard, not a vendor test report that requires independent review.
• 72.75-Inch Three-Bay Span: The width aligns precisely to a three-rack WRK row. Anchor layout reduces to four corner points — straightforward for facilities teams to verify and inspect.

Deployment Considerations:

• Confirm your WRK rack depth is 32 inches before ordering — the SRB-3-WRK-3224 is depth-matched to that dimension; a 26-inch WRK variant will not align correctly to the base footprint.
• The 24-inch height adds meaningful elevation, but verify it does not push rack top-of-unit heights above your facility's seismic bracing or overhead clearance limits before finalizing the rack layout.

This base is the right call for three-bay WRK deployments in California healthcare facilities, seismic zone 3/4 data centers, and any commercial project where ASCE 7-10 compliance is a permit condition rather than a best-practice recommendation.