PEB Standard Framing Systems.

Pre Engineered Building systems have become a great alternative to conventional steel buildings due to their advantages like faster construction, easy fabrication, and economy. Scope of PEB Buildings is becoming increasingly common nowadays to efficiently satisfy a vast range of adaptive structural applications and aesthetic design requirements. 

The pre-Engineered Building concept has wide applications primarily in the construction of commercial buildings (office buildings, department stores, exhibition halls, convention centers, etc.), manufacturing units (factories, power plants, boiler houses, etc.), logistic buildings (warehouses, cold storage buildings) and other buildings (aircraft hangars, stadiums, bridges, shipyards, etc.).

There is a wide range of factors to consider when determining which type of structure to build for any Pre-Engineered Building applications. Every construction job is unique, and each customer has a distinct set of needs that must be met.

It's the span length between two columns without any obstruction. It has split Beams with a ridgeline at the peak or center of the building.

Clearspan construction is a designed steel frame that has high strength and durability. The frame requires no interior supports, resulting in an extremely versatile and economical building. The inside span from the outside column to the outside column is clear of obstructions.

With no need for interior bracing or columns, it's easy to partition off sections for various uses, easily rearrange them if needed, or just leave them as open space. Having a large space like this makes it easy to ventilate the space, efficient to light the space, and oftentimes the sound quality within the clear-span building is great as well.

This type of frame is the most preferred and widely used worldwide. It offers clear access to loading and stacking functions within the shed. As the pillars or columns are coming at both ends, it gives a very spacious and airy look to the entire shed. Clearspan frames are the best choice for logistics and storage buildings, aircraft hangars, auditoriums, and recreation facilities. Clear-span buildings can be constructed as single-span or multi-span depending on the amount of square footage of floor space is needed.

The Multi-span frames are those which have more than one span. The intermediate column is used for the clear span in which the width of each span is called the width module. 

This type of frame is most suitable for clients who want a wide shed but do not necessarily want it to be a clear span because it gives the economy of Two Sloped Structure and the columns in between distributes the load and thus reduces the weight of the structure. It is the most economical form of a frame for large-span buildings. By evenly distributing the load, multi-span frames reduce the cost of both the frame and foundation of extremely wide steel buildings.

Multi-span frames allow for unlimited building width with strategically placed internal columns for additional support. 

Single slope frames have different eave heights on each sidewall. There is a slope from one wall to the opposite wall. 

Single slope frames are the preferred choice when clients want or have restrictions to drain water from both sides of the shed. It is also chosen by clients in case their existing sheds require an expansion in width but is not designed to support a load of a lean-to shed.

Single Slope buildings are economical for spans that are less than 12 meters wide. Single Slope building designs are used for a multitude of building types, from shopping centers to offices, storage facilities, shipyard, etc.

The Lean-to frame joins to and is supported by the main building frame. The lean-to differs from the single slope in that it must be supported on the high side by an adjoining building column.

This type of frame is the most preferred type, for sheds requiring an expansion along the width of a building on a single or either side with a short span. They are a great choice for adding on to existing structures for offices or additional storage space for both business and individual purposes.

It requires the original shed to be designed such that it is able to take the load of the expanded shed along with the new shed. Lean-to sheds are designed to match the roof slope of the existing shed such that the water is discharged out of the shed.

Multi gable has two or more spans where no intermediate columns are used. The columns are added to the extended width and columns are not placed at the ridgelines. A multi-gable roof is a rather complex structure. It is distinguished by the presence of numerous intersections of the slopes, at which valleys are formed.

This type of frame is used in case of wide shed requirement and can be a great choice for super large buildings to reduce ridge height. It is more economical than the Multi-Span frame type as it is lighter because the trusses are smaller. 

But the use of Multi-Gable building frames has to be carefully considered because the valley between gables requires frequent maintenance to avoid the accumulation from residue such as sand, leaves, etc. Also, there is always the risk of the overflow of rainwater in the valley during periods of heavy rain.

Built-up Curved Rafter building is a pre-engineered building with curved steel structures to give a special appearance to the building and its modular width can also be increased.

This style of buildings is often designed for the structures with natural light to create a sense of spaciousness and grandeur in public facilities such as airports, stations, shopping malls, sporting event halls, and leisure centers. This had led to forms of structures in which relatively light-curved steel trusses or arched frames support substantial areas of glazing. Even with cladding structures, exposing the arching steelwork can enhance the sense of internal space.

Even for industrial and distribution buildings, curved roofs can be an effective solution.

Canopies are used in case of open ends where there is easy access. There are columns in a straight path having the roof extended to a large length.

Canopies are narrow roof systems that provide various functions such as a shade to block direct sunlight on the building walls; an extended cover to protect the buildings against the rain; and a cover at entrances of the buildings or adjacent to the walls for car parking.

Canopies may extend along the full or partial length of the sidewalls or end walls of a building. Ideally, they start at a wall column and end at another wall column.

The standard PEB Steel canopy consists of built-up tapered, hot-rolled, or cold-formed canopy rafters that cantilevered from the mainframe columns or from the end wall columns.