Pre Engineered Buildings

The primary framing members, specifically the H-beams are crafted from high-quality hot-rolled (HR) steel plates, meticulously cut to specified dimensions, and adhering to the ASTM A572 grade standard with a minimum yield strength of 345 MPa. These plates are skillfully welded together, employing continuous welding on one side and stitch welding at regular intervals on the other, resulting in a robust H-beam structure.

These sections are custom-built, allowing for the creation of virtually any size according to specific design requirements. To ensure a secure connection, splice plates are welded to the ends of the various H-beam sections. The complete frame assembly is achieved by bolting these splice plates together, resulting in a sturdy and reliable framework.

At Metrosh Infra Projects Private Limited, our pre-engineered steel buildings are designed with a commitment to 100% customization, optimizing space utilization while providing exceptional strength and safety.

Our Architectural Specifications Encompass

Key Building Specifications

Building Width: The measurement from the outer edge of the eave strut of one sidewall to the outer edge of the eave strut of the opposing wall.

Building Length: The distance between the outer flanges of the end wall columns located at the facing end wall.

End Bay Length: The span from the outer edge of the outer flange of the end wall columns to the centerline of the first interior frame columns.

Interior Bay Length: The distance between the centerlines of two adjacent interior main frame columns, typically varying from 6m, 7.5m, and 9m to 15m.

The building height, defined as the eave height, measures from the base plate of the main frame column to the top outer point of the eave strut, reaching heights of up to 30m. For columns that are recessed or elevated above the finished floor, the eave height is measured from the finished floor to the top of the eave strut.

Additionally, the roof slope is the angle formed between the roof and the horizontal plane, commonly set at a ratio of 1:10.

Secondary Members

Secondary members, including purlins, girts, and eave struts, play a crucial role in the structural integrity of pre-engineered buildings. Their primary functions include:

Load Resistance: They act as struts that help resist a portion of the longitudinal loads, imposed on the building, including wind and earthquake forces.

Lateral Bracing: These members provide essential lateral bracing to the compression flanges of the main frame members, effectively increasing the overall frame capacity.

Constructed from high-grade steel with a minimum yield strength of 345 MPa, these secondary members are available in thicknesses ranging from 1.5 mm to 2.5 mm. They are finished with a pre-galvanized coating or treated with a Zn chromate primer to ensure robust corrosion protection.

Roofing and Wall Cladding Panels

Metrosh pre-engineered buildings feature roofing and wall cladding panels crafted from 0.5 mm thick Galvalume material with a yield strength of 550 MPa. The roofing panels are composed of bare Galvalume, while the wall cladding panels come in color-coated Galvalume.

Key specifications include

Paint Film Thickness: The exterior weather face features a paint film thickness of 25 microns, complemented by 5-7 microns of polyurethane-compatible epoxy primer on the interior face.

Coating Specifications: The sheeting material is hot-dip metallic coated with 150 gm/m² total, AZ 150, conforming to ASTM A792 or AS 1392. The walls are coated with a 25-micron regular modified polyester paint system applied to Zincalume.

Metrosh offers a selection of various colours for wall cladding panels, ensuring aesthetic versatility. Our roofing and wall cladding panels are engineered to provide:

Exceptional Corrosion and Weather Resistance: Designed to withstand harsh environmental conditions.
Extended Spanning Capability: Supporting longer distances without compromising structural integrity.
Thermal Efficiency: Enhancing energy conservation within the facility.
Long Durability and Safety: Ensuring a reliable and secure structure for years to come.

FAQs

1. What is a pre-engineered building (PEB)?

A PEB is a factory-fabricated steel structure designed using engineered frames—H-beams, purlins, girts, and cladding—made to exact specifications. All structural elements are manufactured in-house and assembled on-site with bolt connections, ensuring a strong, efficient, and aesthetically versatile building.

2. How long does it take to construct a pre-engineered building?

Thanks to off-site fabrication and rapid on-site assembly, Metrosh delivers fully erected PEBs in weeks instead of months. Typical timelines range from 4–12 weeks, depending on size and complexity, significantly faster than conventional buildings.

3. What industries use pre-engineered buildings the most?

Metrosh’s PEBs are widely used across: Industrial: Warehouses, factory sheds, cold storage Commercial: Showrooms, offices, parking sheds Institutional: Schools, hospitals, auditoriums Infrastructure: Railway FOBs & ROBs, multi-level parking This underscores their versatility and suitability for diverse applications

4. Are pre-engineered buildings cost-effective?

Absolutely. PEBs reduce material wastage through precise fabrication, minimize labor costs with quick install, and optimize material use via engineered design—often saving up to 30% on structural steel compared to traditional steel buildings.

5. Can pre-engineered buildings be customized to specific requirements?

Yes. Metrosh PEB frames—including H-beams, widths, heights, and bay spacing—are fully customizable. You can tailor the layout, roof slope, finishes, cladding, and accessories to match exact structural and aesthetic needs.

6. What materials are used in pre-engineered buildings?

Metrosh uses: Primary Frames: Welded HR steel plates (ASTM A572, ≥345 MPa) Secondary Members (purlins, girts): Steel (1.5–2.5 mm), galvanized or Zn-primed Roof & Cladding: 0.5 mm Galvalume sheeting (550 MPa), color-coated with epoxy/PU finishes

7. How durable are pre-engineered steel buildings in extreme weather conditions?

Built with ASTM-grade steel and high-yield cladding, Metrosh PEBs are designed for excellent load resistance, corrosion protection, and long-term durability—engineered to withstand wind, seismic events, and harsh weather while requiring minimal maintenance.

8. Do pre-engineered buildings comply with Indian building codes and safety standards?

Yes. Metrosh follows all relevant Indian and international codes, using high-quality materials (ASTM, Galvalume AZ150) and factory fabrication, ensuring compliance with structural safety, durability, and environmental standards. Every project includes quality inspections and certifications.