Pre-engineered buildings are on an avg.30% lighter through the efficient use of steel. Primary framing members are tapered (varying depth). Built-up plate sections have greater depth in areas of higher stress.

Primary steel members are selected from standard hot rolls ‘I’ selection, which are in many segments of the members heavier than what is actually required by design. Members have constant cross-section regardless of varying magnitude of the local stresses along the member length.

Quick and efficient, Since PEB’s are mainly formed of standard section and connection, design time is significantly reduced. Basic designs are used over and over.

Specialized computer analysis and design programs optimize material required. Drafting is also computerized using standard details that minimize project custom details.

Each conventional steel structure is designed from scratch by the consultant, with fewer design aids available to the engineer.

Substantial engineering & detailing is required on every project. Generalized computer analysis programs require extensive input/output & design alterations.

Average 6 to 8 weeks.

Average 20 to 26 weeks.

Simple design, easy to construct and light weight.

Extensive heavy foundation required.

Both cost & time of erection are accurately known, based upon extensive experience with similar buildings.
PEB’s are often erected by specialized PEB builders with extensive experience in the erection of similar buildings. They usually have a stock of standard components in their camps, enabling them to complete jobs on time even if there is any shortage or site damage to materials.

Typical, they are 20% more Expensive than PEB. In most of the cases the erection cost and time are not estimated accurately.

The low-weight flexible frames offer higher resistances to seismic Forces.

Rigid heavy structure do not perform well in seismic zone.

Price per square meter may be as much as 30% lower than conventional steels.

High price per square meter.

Outstanding architectural design can be achieved at low cost using standard architectural feature and interface details. Traditional wall and fascia material, such as concrete, masonry and wood can be utilized.

Special architectural design and feature must be developed for each project which often requires research and thus resulting in much higher costs.

Building is supplied complete with cladding and all accessories, including erection(if desired) from one single source.

Many sources of supply: project management time is required to coordinate supplier and sub-contractors.

Single source of supply results in total responsibility by one supplier including design liability. PEB manufacturers can be relied upon to service their buildings long after they have supplied, to protect their reputation.

Multiple sources of supply can result in confusion over the identity of person responsible when components do not fit properly, insufficient material is supplied, or material fails to perform at the supplier contractor interface. The consultant carries total design liability.

All components have been designed specifically to act together as a system, for maximum efficiency, precise fit and peak performance on the field.

Components are custom designed for a specific application on a specific job, design and errors possible when assembling the diverse components into unique building.