This document compares pre-engineered buildings (PEBs) to conventional steel buildings (CSBs). PEBs offer several advantages including fully finished factory fabrication resulting in faster construction, single source supply, lighter weight structures, simpler foundations, faster erection, and overall lower prices of up to 40% compared to CSBs. PEBs involve predesigned and prefabricated steel building systems for quality construction, time and cost savings over conventional on-site fabrication of CSBs. Major international contractors have increasingly adopted the PEB approach for its benefits.

1. PRESENTED BY : RAVIKIRAN KATTOLI

2.  The present construction methodology for
buildings calls for the best aesthetic look, high
quality and fast construction, cost effective and
innovative touch.
 Technological improvement over the year has
contributed immensely to the enhancement of
quality of life through various new products and
services.
 One such revolution was the PEB.

3.  A growing number of prominent International
contractors and designers ,who previously specified
conventional structural steel buildings exclusively, have
recently converted to the PEB approach.
 They now enjoy significant cost saving and benefits
from the faster construction cycle resulting from this
concept.
 Pre-Engineered Building concept involves the steel
building systems which are predesigned and
prefabricated.
 Conventional steel buildings (CSB) are low rise steel
structures with roofing systems of truss with roof
coverings.

4. PROPERTY PRE-ENGINEERED
BUILDINGS (PEB)
CONVENTIONAL
STEEL BUILDINGS
QUALITY Fully finished products in ready
to erect condition reaches at site
involving absolutely no welding,
cutting etc. at site and assembly
is only done by bolting.
All fabrication work at site
involving lot of wastage of
material and loss of
quality.
TIME SAVING Completely factory made/shop
fabricated system resulting
significant saving in time and
superior quality.
Site fabrication requires a
lot of infrastructure
facilities and involves more
time resulting in delays in
project implementation.

5. SINGLE
SOURCE
Entire product range of
roofing, structure,
mezzanine, staircases ,
beams, doors, windows,
Ventilations, insulations
everything is easily available
in stock from single source
supply in finish condition.
To procure from 10-15
sources from local market
results in non-
compatibility.
Needs lot of coordination
with several agency which
costs time and money.
STRUCTURE
WEIGHT
PEB is almost 10-15% lighter
compared to conventional
construction due to efficient
design and integral framing
system.
Use of standard hot rolled
sections result in heavy
steel structure and
comparatively
overdesigned
structure.

6. FOUNDATION Being light structure
foundation size and design is
lighter and simpler.
Corporately heavy
foundation design
resulting
higher cost.
Seismic
resistance
The low weight flexible frames
offer higher resistance to
seismic force.
Rigid heavy structures
do not perform well in
seismic zones.
Delivery Average 6 to 8 weeks. Average 5 to 6 months.

7. Erection Easy, fast, step by step. Erection
costs & time are accurately
known, based upon extensive
experience with similar buildings.
Slow, extensive field
labor required. Typically
20% more expensive than
a normal PEB building. In
most of the cases, the
erection costs and time
are not estimated
accurately.
Architecture Outstanding architectural design
at low cost.
Special architectural
design requires research
and high cost.
Performance All components have been
specified and designed specially
to act together as a system for
maximum efficiency and peak
performance in the field.
Components are custom
designed for a specific
application on a specific
job. Design and detailing
errors are possible when
assembling the diverse
components into unique
buildings.

8. Overall Price Price per square meter may be as
much as 40% lower than
conventional steel.
High price per square
meter.
Responsibility Single source of supply results in
total responsibility for one
supplier, including design liability.
Multiple responsibilities
can result in questions of
who is responsible when
components do not fit
properly, insufficient
material supplied, or
materials fail to perform,
particularly at supplier
interfaces. The consultant
carries total design
liability.

9.  Introduction to Pre Engineered Buildings, Gursharan Singh,
2008.
http://www.engineeringcivil.com/pre-engineered-
buildings.html http://www.laiserin.com
 www.pebsteel.com