Pre-Engineered Buildings (PEB) | Advantages & Applications of Preengineered Buildings

Pre-Engineered Buildings (PEB)

Pre-engineered buildings are buildings that are built in factories and are made of steel that are shipped to site and bolted together. PEB (Pre-engineered Building) revolution the construction market using built up sections in place of conventional hot rolled sections. A large column free area is the utmost requirement for any type of industry which is provided by PEB.

Typical Pre-engineered Building

Typical Pre-engineered Building

PEB concept involves the steel building systems which are pre designed and prefabricated. As the name itself indicates, there is involvement of pre engineering of structural elements. The basis of PEB is to provide the section at the specified location only according to the need at that spot. The sections may differ along the length according to the bending moment diagram. The use of optimal least section leads to the effective saving of steel and also reduction in the cost.

Various systems of PEB – Pre-Engineered Buildings:

Primary system:

This system involves tapered or parallel columns or tapered beams which are called rafters. Base of column is either fixed or pinned based on the load requirements.

Rafter and Column used in PEB

Rafter and Column used in PEB

Secondary system:

It consists of purlins, grits which are the side claddings and eave struts stiffened by sag rods. This system also includes the flange stiffeners which joins the untied flanges of the PEB primary system to the secondary system.

Z and C purlins

Z and C purlins

Wind bracing system:

Rod bracing and the portal system are the two types of wind bracing systems. Each one is chosen accordingly depending on design and functional requirement.

Typical Wind Bracing across rafters

Typical Wind Bracing across rafters

Accessories:

This part includes the Turbo ventilator, ridge vents, Flashings, gutters, down pipes, ladders etc.

Pre Engineered Building Connections

Pre Engineered Building Connections

Advantages of PEB – Pre-Engineered Buildings:

  • Construction time: PEB reduces the total construction cost by the least 40% which leads to faster occupancy and early revenue.
  • Lower cost: Saving is accomplished in design, manufacturing and erection cost.
  • Large clear span: In PEB the buildings can be given up to 90m clear spans which is the important advantage of PEB with column free space.
  • Flexibility of expansion: PEB can be easily expanded in length by adding additional bays.
  • Quality control: PEB’s are manufactured under controlled conditions depending on the site and hence the quality is assured.
  • Low maintenance: PEB’s have high quality paint systems for cladding which gives long durability and low maintenance costs.
Pre-engineered Building Under Construction

Pre-engineered Building Under Construction

Applications of Pre-Engineered Buildings – PEB:

Some of the many applications of PEB are:

  • Factories, Warehouses, Workshops, Offices
  • Gas stations
  • Showrooms
  • Aircraft hangers
  • Metro stations
  • Vehicle parking sheds
  • Schools, Indoor stadium roofs
  • Bridges, Railway platform shelters
  • Outdoor stadium canopies

PEB are more advantageous than the conventional structures in economy, speed of construction and simple erection. As these structures have a wide scope, they must be preferred and utilized.

PEB Assembly

Video below shows step by step assembly of a Pre engineered structure.

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