Magazine Explosive Storage

SUPERloc - 4 Hour Fire Rated Chemical Storage - FM or Warnock Hersey Approved

Four Hour Bi-Directional fire rated buildings for safe and complaint hazmat chemical and product storage

SUPERloc™ is the standard 4-hour fire rated, bi-directional hazardous material and chemical storage building that allows for storage located within 10' from and even inside your facility (check with local authorities about any variance allowances). This location advantage allows for faster production, distribution and storage of your valuable flammables and combustibles. An interior location also allows sensitive material and chemical storage without the added expense of temperature control. SUPERloc™ is manufactured from heavy gauge steel with a leak-proof built-in secondary containment sump & can be manufactured with FM or Warnock Hersey Approval.

4 Hour Fire Rated Storage Buildings Benefits

Insurance policy renewals, fines, fires and hazardous spills are all very important reasons to maintain compliant chemical storage. The SUPERloc™ offers unmatched strength that will guarantee years of compliant use. This 4-hour Fire Rated building can be modified to include a variety of optional accessories and customize your storage solution. Explosion relief construction can even be included to allow for Class 1A, Class 1B and 1C flammables as well as Class II and III combustible storage and/or mixing of Class 1B flammable chemicals.

SUPERloc™ is the perfect 4 hour fire rated storage building for you and your company to achieve compliance and make your manufacturing and storage more efficient. Our customer driven and quality focused goals will ensure you have the best building money can buy. Call us today at (800) 233-1480 or fill out our quote form and compare our cost to the cost of building your own modular chemical storage solution.



  • Dimension: L X W X H
  • Weight: *VARIES
  • Snow Load: 40 PSF
  • Floor Load: 500 PSF
  • Wind Load: 130 MPH Exp. C
  • Seismic: Category: C

SUPERloc conforms to the above design factors unless noted otherwise on drawings as directed per local and state codes.

*Accessories may alter building weight and dimensions.

When located 0-10ft away from other facilities, roads or property lines, fire rating is not necessary for flammable and combustible chemicals. Should the building require heating or cooling systems, the walls and ceiling/roof would have to be insulated. The exposed insulation material should be covered for mechanical protection. The can be achieved by steel liner and/or gypsum board. When fire rating is required gypsum type x is used.

WALL STRUCTURAL FRAMEWORK: Four (4) hour bi-directional fire rated noncombustible weatherproof construction that meets or exceeds UL 263 & ASTM E-119, with mineral wool insulation, multiple layers of UL Classified fire-resistant gypsum wallboard encased between interior and exterior heavy gauge Galvanneal sheet steel for maximum durability. Gypsum wallboard layers are offset with overlapping joints for maximum fire resistance. Conforms to NFPA 30 standards. Structure fabricated from 3” x 2” x 1/8” steel structural or mechanical tubing members placed on 24-inch on center. Building perimeter has 6”x3”x3/16” steel tubing below and above wall studs. The corner studs and door frame opening studs are 3”x3”x3/16”. Framework connected by welding. All framing members shall be mechanical or structural tubing; formed

ROOF SYSTEM: One (1) hour fire rated Class A flame spread rating.  Wind uplift exceeds UL I-60 and is constructed of 1 hour fire rated, weatherproof construction.  Exterior roof sheets are continuously welded to roof supports at each seam. Roof Structural System is fabricated from 14 ga. formed channel 4” in width on 12” centers, welded to roof supports at each seam.  All framing members are mechanical or structural tubing.  12 ga. HRS steel roof with multiple layers of UL Listed fire resistant gypsum wall board lined on both interior and exterior with heavy gauge galvanneal sheets.  Assembly meets or exceeds UL 263 and ASTM-E119.  Roof is sloped to facilitate runoff and door(s) are equipped with rain shields.

FLOOR SYSTEM: Grating and Leak Proof Spill-Containment Sump Assembly is a 6” inch high assembly consisting of 1” inch deep welded steel floor grating over 6” inch deep leak proof secondary containment sump. Continuous steel floor grating throughout building, fabricated from welded steel grating with 1 x 3/16” bearing bars at 1 x 3/16” inches on center and crossbars at 4 inches on center. Grating material is galvanized steel. Sump is fabricated utilizing continuously welded 10 gauge steel sheets for maximum spill containment. Chemical-resistant acrylic alkyd enamel coating is applied to secondary containment sump. Floor System is fabricated to comply with NAAMM MBG 531, “Metal Bar Grating Manual for Steel, Stainless Steel, and Aluminum.

BUILDING BASE: Open channel construction, underside coated with chemical resistant corothan I-Coal Tar for maximum corrosion resistance. Forklift pockets and hold-down brackets for ease of off-loading and relocation. Building base framing is capable of withstanding 1000 psf minimum. The building base is constructed in this manner to ensure the fork lifting, loading, transporting, offloading, and relocation do not affect this chemical storage building. This is to ensure the door openings remain square after lifting the building multiple times with a crane or fork trucks. The building base assembly shall consist of the following materials: 6 x 4 x 3/16” rectangular tubing, Hold Down Brackets welded to building are ½” thick plate steel angles, Floor Channel C.

STATIC GROUNDING SYSTEM: One exterior grounding connection, one 10-foot long 5/8” diameter copper-clad steel grounding rod, and grounding lugs.

GRAVITY AIR FLOW VENTS: UL listed with 3 hour rated fire dampers with UL listed 165 degree fusible links. Dampers include louvers and screens to provide airflow and have a galvanized steel frame and curtain type.

Building Finish: After an extensive cleaning process the interior and exterior surfaces are protected with a high solids alkyd universal metal primer (primer) and a high solid acrylic alkyd enamel top coat providing proven interior chemical resistance as well as exterior abrasion, corrosion, UV resistance and exceptional durability.

SIGNAGE: Permanent D.O.T. metal flip placard with rust proof aluminum holder and stainless steel clips on each building. One (1) pressure sensitive NFPA 704 Hazard Rating sign.

APPROVALS: This unit will have Warnock Hersey Approval.

Third party and/or state approvals are available and are not included in unless noted.

Accessories may increase exterior dimensions.

Color: Standard Color is Bleached Bone unless noted otherwise. Other color choices are White, Barber Green, Aztec Brown, Dove Gray. Custom Colors available upon request.

Storage Capacity shall be up to: (x) Fifty-five (55) gallon drums or (x) 4’ square pallets or totes. Stored back-to-front and side-to-side completely filling all available floor space. Total room storage capacity is in (X) gallons in “packed-in” mode.

Storage Capacity Option: (x) Fifty-five (55) gallon drums or (x) 4’ square pallets or totes with (x) wide aisle for inspection and material handling of hand trucks, lifters, forklifts and crane hoists maneuvering capability. Total room storage capacity is in (X) gallons less floor space allowed for aisles.