PEB Pre Engineered Buildings Manufacturers in Hyderabad

Introduction to Pre Engineered Buildings

Technological innovation over the years has enhanced the quality of life through the introduction of new products and services. One such innovation in the construction industry was the Pre-Engineered building system. PEB’s are tailor-made solutions which are designed and manufactured as per customer needs. The entire building is designed in the office and the building components are fabricated at a factory to exact size, transported to site in CKD (completely knock down condition) and assembled with bolted connections on site. These buildings are flexible enough to suit different dimensions and are easily expandable.

A Pre-Engineered building always includes a structural system, roof and wall cladding. The structural system consists of rigid frames that are fabricated from plate steel and “cold formed” into an “I” shape through manufacturing process. These rigid frames consist of Columns and roof beams that are field bolted together. These frames can span large distances without the assistance of intermediate supporting columns and are spaced at intervals between 15’ and 60’.

Installed on the top and perpendicular to these frames are secondary structural spanning members often referred to as purlins. They are spaced inches apart across the width of a building. The roofing system attaches to the purlins. The wall systems include secondary structural members called girts that also span from frame to frame and support a wall cladding system.

A pre-engineered building system is advantageous because it allows for the creation of large column-free enclosures. The alternative structural choices, such as mill steel and light gauge metal, use more steel and are therefore more expensive to build. The best applications for PEB’s include industrial applications such as complex industrial facilities, warehouses and distribution centers. They are also used in retail stores, shopping centers, motels, auto dealerships, office complexes, airplane hangars, sports and entertainment arenas as well as schools, libraries, churches, medical facilities and government buildings.

Primary Members

Primary Members i.e. Columns and Rafters are the most important parts of the Pre-Engineered Building, the major load of the building is borne by these members which transfer the load to the foundation. Columns and Rafters make-up the frame of the buildings on which all other parts of the buildings are fixed and are manufactured such that only bolted connections are required. The design of these structures is done using advance software such as STAAD PRO. The usual load considerations are Live Load, Dead Load, Wind load, Collateral Load.

Secondary Members

Purlins & Girts

Purlins, Girts and Eave Struts are secondary frame members used to support the wall and roof panels. Purlins are used on the roof; Girts are used on the walls and Eave Struts are used at the intersection of the sidewall and the roof. They ensure the stability of the building against forces from all directions. Secondary members have two functions:

1. They act as struts that help in resisting part of the longitudinal loads that are applied on the building such as wind and earthquake loads.
2. They provide lateral bracing to the compression flanges of the main frame members thereby increasing frame capacity.

Z – Purlin & C - Purlin Purlins and Girts are made up of cold formed steel Z & C sections that are supported on columns, rafters or building walls. They can be lapped and nested at the supports, to create a continuous beam configuration. They are placed under the roof, wall and the perimeter of the building and serve as supports to the roof sheeting and wall cladding.

Eave Struts Eave Struts are typically constructed from cold formed 'C' sections and are rolled to suit the roof slope. Their primary function is to support the gutters and also to act as a junction of the roof and the wall cladding.

Rod Bracing This member is designed to ensure the stability of the building against forces in the longitudinal direction due to wind, cranes and earthquakes.

Insulation

Wall/ Roof Cladding & Sheeting

The sheets are generally produced from steel coils having thickness 0.47 mm to 0.8 mm high tensile steel.

Accessories Pre-engineered buildings can be fitted with different structural accessories including mezzanine floors, canopies, fascia, interior partitions etc. the buildings are made water proof by use of special mastic beads, filler strips and trims. PEB’s can be finished internally to serve many functions and accessorized externally to achieve attractive and unique design styles.

Paints and Finishes Normally, the primary and secondary steel are coated with one coat (35 microns) of red oxide paint without any special treatment to steel. However, if some special paint has to be applied to steel in order to give better anti–corrosion properties, then the steel members have to be shot–blasted and coated with special paints.

Doors: 1. Walk Way doors
2. Sliding Doors
3. Roll up Doors

Windows
Turbo Air Vents
Sky Lights

Advantages of PEB

Pre-Engineered Building systems are the fastest systems of modern day construction, an amalgamation of speed, functionality and durability known for their unique designs, self-adhesive nature, and thermal insulation properties offering the benefits of superior quality, efficiency, and durability. PEB’s make the construction process simpler and faster, giving you flexibility paired with aesthetic appeal and are ideal for any non-residential low-rise building.

REDUCED CONSTRUCTION TIME: Buildings are typically delivered in just a few weeks after approval of drawings. Foundation and anchor bolts are cast in parallel, ready for on-site bolting. The use of PEB will reduce total construction time of the project by at least 50%. This also allows for faster occupancy and earlier return of investment.

LOWER COST:Due to the systems approach, there is a significant saving in design, manufacturing cost. The secondary members and cladding nest together reducing transportation cost.

FLEXIBILTY OF EXPANSION: Buildings can be easily expanded in length by adding additional bays. Also expansion in width and height is possible by pre designing for future expansion.

LARGE CLEAR SPANS: Buildings can be designed up to 80M clear spans.

QUALITY CONTROL: As buildings are manufactured completely in the factory under controlled conditions the quality is assured.

LOW MAINTENANCE : Buildings are painted with high quality paint to suit ambient conditions, which results in long durability and low maintenance cost.

ENERGY EFFICIENT ROOFING AND WALL SYSTEMS: Buildings can be supplied with polyurethane insulated panels or fiberglass blankets insulation to achieve required “U” values.

ARCHITECTURAL VERSTALITY: Building can be supplied with various types of fascia, canopies, and curved eaves and can be designed to receive pre-cast concrete wall panels, curtain walls, block walls and other wall systems.

SINGLE SOURCE RESPONSIBILTY: As the complete building package is supplied by a single vendor, compatibility of all the building components and accessories is assured. This is one of the major benefits of the pre engineered building systems.

Applications/Uses of PEB

Pre-engineered buildings are generally low rise buildings however the maximum eave height can go upto 25 to 30 metres. Low rise buildings are ideal for offices, houses, showrooms, shop fronts etc. The application of pre engineered buildings concept to low rise buildings results in very economical and speedy construction. Buildings can be constructed in half the normal time especially when complemented with the other engineered sub systems.

1. Houses & Living Shelters
2. Factories
3. Warehouses
4. Showrooms
5. Workshops
6. Office
7. Metro Stations
8. Railway Platform Shelters
9. Indoor Stadium/Sports Halls
10. Outdoor Stadium Canopies
11. Aircraft Hangers
12. Supermarkets
13. Vehicle Parking Sheds
14. Workshops
15. Office Buildings
16. Labour Camps
17. Petrol Pumps/Service Buildings
18. Schools
19. Community centres
20. Bridges

Design codes & Standards

Following are the main design codes generally used:
AISC : American institute of steel construction manual
AISI : American iron and steel institute specifications
MBMA : Metal building manufacturer’s code
ANSI : American national standards institute specifications
ASCE : American society of civil engineers
UBC : Uniform building code
IS : Indian standards