A Pre-Engineered Steel Buildings is composed of two distinct subsystems:

• The Pre-Engineered Steel Building Structure
• The Panels & Panel Accessories

The Pre-Engineered Steel Building Steel Structures (PEBSS)

The PEB Steel Structure of a Pre-Engineered Steel Building generally accounts for over 80% of the weight of the Pre-Engineered Steel Building. This 80% is an average and may change plus or minus 10% depending on the presence of mezzanines, crane runway beams, type of Panels used and the amount of building accessories that are included in a building. The unit of measure for PEB Steel Structures is metric ton (MT). As a general average, one square meter (1 m²) of PEB Steel Structure weighs 25 kg. Thus one MT of PEB Steel Structure = 400 (1000/25) m² of building foot print. The PEB Steel Structure is made up of frames, secondary members and steel standard buyouts.

• Frames in the PEB industry often refer to primary built-up & hot rolled members. Constant depth or tapered depth built-up members generally account for over 90% of the weight of frames while hot rolled members generally account for the remaining 10%.

  

• Secondary Members in the PEB industry refer mostly to longitudinal roof and wall members that are roll formed from galvanized coils or press broken from narrow galvanized sheets. The raw material of these members is stocked in five thickness: 1.5, 1.75, 2.2, 2.25 and 2.5mm.

  The following building components are considered secondary members.

• Steel Standard Buyouts (SBO): These are items that are required in almost every PEB Steel Structure. They are manufactured by others and stocked by the PEB manufacturer. They include Anchor Bolts, Connection Bolts, Sag Rods and Cable Bracing Components.

The Panels & Panel Accessories (PPA)

Panels & Panel Accessories include single skin panels, sandwich panels, trims and flashing, panels standard buyouts and building accessories. Although all roofs have panels, walls are often partially or fully open for blockwall, precast panels or access.

• Single Skin Panels are trapezoidal ribbed sheets roll formed from thin mill finish or prepainted aluzinc coated steel and aluminum coils and cut-to-length to meet the requirements of a specific building.

• Sandwich Panels have a polyurethane foam core sandwiched between two single skin metal panels (or an exterior single skin metal panel and an interior aluminum faced laminate). Mabani Steel does not produce sandwich panels but has an exclusive arrangement, with the largest producer of sandwich panels in the UAE, for the purchase and resale of sandwich panels, to provide its Customers with a single source supply responsibility. The engineering drawings for the sandwich panels are done by Mabani Steel so are the production of trims and the supply of all sandwich panels accessories such as fasteners, bead mastic, purlin tape, etc.

• Trims and Flashing include eave trim, eave gutters, downspouts, gable trim, curved eave panels, flashing around building accessories, etc. which are produced from prepainted aluzinc coated steel or aluminum sheets that are bent to the required shape using roll formers, presses, or folding machines. They weather seal the building and contribute to the neat finish appearance of a PEB.

• Building Accessories and special buyouts (SBO’s) include sliding doors, rollup doors, personnel doors, fiberglass insulation, sandtrap louvers, windows, ridges ventilators. Some are produced in-house. Some are purchased from suppliers and included in our single source supply.

  

• Panel Standard Buyouts are items that are produced by others and stocked as finished items by the PEB manufacturer. They include sheeting fasteners (carbon steel and stainless steel), bead mastic, pop rivets, foam closures, skylights, etc. These are packed by us for a specific building and shipped to the jobsite with the panels.