INDIAN RAILWAYS MAINTENANCE MANUAL FOR DIESEL LOCOMOTIVES - PART 18
Document No:
Chapter –3 Infra. Facilities of Diesel Loco Shed
Version No: 1.0-d0
Date Issued: dd/mm/yyyy
Document Title: MANUAL MAINTENANCE FOR DIESEL LOCOMOTIVES
Revised 2013
Printed: 2015/03/08
Page 64 of 303
Pre Engineered Buildings
Conventional Structural Steel
Overall Price
Price per square meter may be as much as
40% lower than conventional steel.
Overall Price
High price per square meter.
Sourcing & Co-ordination
Building is supplied complete with cladding and
all accessories, including erection if required, all
from one source of supply.
Sourcing & Co-ordination
Sourcing of different material has to be done
from different sources.
Changes
Very flexible, tailor made, accepts changes and
revisions easily. One supplier to coordinate
changes. Easily accommodated at any stage
since this is made up of standard raw materials.
Changes
Changes, revisions & additions can be difficult
due to extensive re-design and co-ordination
among suppliers and sub-contractors.
Substitutions of hot rolled sections are
infrequently rolled, time consuming and also
very expensive if it is already shipped for
fabrication.
Performance
All components have been specified and
designed specifically to act together as a system
for maximum efficiency, precise fit up, and
performance in the field. The experience with
similar buildings, in actual field conditions
worldwide has resulted in design improvements
over time, which allow dependable prediction of
performance.
Performance
Components are designed in general for
possible use in many alternative
configurations. Design and detailing errors are
possible in assembling diverse components
into unique buildings. Each building design is
unique, so prediction of how components will
perform together is uncertain. Materials, which
have performed well in some climates, may not
in other environments.
Seismic
Low-weight flexible frames offer high seismic
resistance
Seismic
Rigid heavy structures do not perform well in
seismic zones.
Functional Versatility
Larger spans & longer bay spacing. Easily re-
locatable & reusable as joints can be
dismantled.
Functional Versatility
Restriction on larger spans & longer bay
spacing. Can’t be relocated as all joints are
rigid.
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