1. Pre-engineered buildings
Rushank Mishra -2008BARC012
Gyandeep Jaiswal -2008BARC065
Akshay Gupta -2008BARC073

2. Pre-Engineered Building (PEB’s)
• A Pre-Engineered Building is a metal building that consists of light gauge
metal standing seam roof panels on steel purlins spanning between rigid
frames with light gauge metal wall cladding. It is a relatively flexible
structure vs. a conventional steel framed building. In other words, it has a
much greater vertical and horizontal deflection. The intent for this
publication is to recognize the nature and limitations of pre-engineered.
• Pre-engineered building concept is widely used in many of the
industrialized countries. It consists of a complete steel-framed building
system, with components pre-designed to fit together in a vast variety of
combinations to meet the unique requirements of specific end uses.

3. Different members in the assembly of the pre-
engineered buildings
1. Eave strut
2. Roof panel
3. Roof purlin
4. Rigid frame rafter
5. Ridge line
6. End wall
7. Wall panel
8. Side wall
9. Rigid frame column
10. Downspout
11. Gutter
12. Ridge panel
13. Cable bracing or rod
bracing(at roof and wall)

5. Terminologies in Pre-Engineered Buildings
• Base Plate
A plate attached to the base of a column which rests on the foundation or other support, usually secured
by anchor bolts.
• Butt Plate
The end plate of a structural member usually used to rest against a like plate of another member in
forming a connection. Sometimes called a split plate or bolted end plate.
• Bay
The space between frame centre lines or primary supporting members in the longitudinal direction of
the building.
• Brace Rods
Rods or cables used in roof and walls to transfer loads such as wind loads, and seismic and crane thrusts
to the foundation. (Also often used to plumb buildings, but not designed to replace erection cables.)
• Clear Height:
This is the distance between the Finished Floor Level to the bottom of knee joint.
• Roof Slope (x/10):
This is the angle of the roof with respect to the horizontal. The most common roof slopes are 0.5/10 and
1/10. Any practical roof slope is possible.

7. Typical Pre-Engineered Building Assembly
• The “Rigid Frame” assembly is the
most common frame used in pre-
engineered buildings.
• Basically, the rigid frame consists of
a structural steel (hot-rolled)
moment-resisting column and beam
assembly that carries the cold-
formed roof purlins (usually “Z”
shaped) and wall girts (usually “C”
shaped).
• In addition, diagonal rod bracing is
required in the walls to resist
horizontal loading on the building
(i.e., wind loads and/or seismic). Rod
bracing is also provided within the
roof framing to resist "racking", or
twisting of the building.

8. MEZZANINE FLOOR
DIFFERENT TYPES PRIMARY FRAMING SYSTEM
NORTH LIGHT
MONITOR TYPE
CANOPY

9. DETAILS of FITTINGS
PARTITION SIDEWALL ROOF EXTENSION MEZZANINE AT ENDWALL
ENDWALL ROOF EXTENSION WITH
SOFFIT
CURVED EAVE WITH
PROJECTION
CURVED EAVE WITHOUT
PROJECTION

10. TYPES OF PURLIN
• Z-Section Purlin used in the
roofing at sports complex,
MANIT

11. Pre-Engineered
Building Process
These are the stages which are involved
in the Pre-Engineered building

12. ADVANTAGES
1. Fast Project Construction:
- Buildings are fabricated and delivered within a short period due to standardisation.
- Fast erection because all members are field bolted.
2. Functional Versatility: - Modular construction.
- Large clear Spans (up to 100m).
- Long Bay Spacing (up to 13m).
- Buildings are easily expandable on all sides (allowing for future expansion).
3. Architectural Flexibility:
- Aesthetic features such as fascias, parapets and curved eaves greatly improve the appearance of the
building.
- Readily available interface details between steel and other materials (glazing, block wall, curtain wall,
etc.).
4. Low Maintenance and Operating Costs:
- Virtually no maintenance required for all panels.
- Roof requires only periodic cleaning.
- Annual washing of Eave Gutters.
- Watertight roofs.

13. Possible Disadvantages
1. Relatively short life-span
2. Sometimes has an “industrial” or
“warehouse” look to it
3. The foundation system is NOT designed by
the manufacturer
4. On-site alteration in design can’t be done.

14. Application of Pre-Engineered Buildings
• Commercial buildings
• Auditoriums and Halls
• Administration buildings
Factories
Warehouses
Stadiums Animal feed sheds
High rise buildings
Shipyards
Mall
Processing mills
Airport

15. Case Study:
Sports
Complex,
MANIT,
Bhopal
Flange Brace Angle
Ridge Line

16. Warehouse, Mandideep,
Kirby Building Systems
C-Section Purlin
Z-Section Purlin
Diagonal bracing
I-Section Column
I-Section Column
Base Plate
Foundation

17. Bolting at base plate
Diagonal bracing for
addition supports
Roof Panel

18. Warehouse, Samashgarh,
Bhopal

19. Some of the significant advantages of PEB buildings
over conventional buildings
PEB Buildings Conventional Building
Aesthetically appealing appearance Special aesthetic design required
Reduced time because of international design
standards & codes using standard sections and
connections
Increased design time due to scratch and availability
of less design aids
Higher resistance to seismic forces due to low weight
flexible frames
Rigid heavy weight structures not suitable for seismic
zones
30% less PEB steel structures weight through
efficient use of steel
High weight due to excessive safety factor and the
usage of heavier steel sections
Factory controlled quality Every project to be fabricated at site
Lower initial cost of peb steel buildings(cost per
square meter about 30% less than the conventional)
and faster delivery
Special design and features developed for each
project at higher costs
Simple Foundation, easy to construct and light
weight of PEB structures
Extensive heavy foundation
Average delivery time 6-8 weeks Average delivery time 22-28 weeks