a seminar on Change in size due to wear tear for ready reffrence

1. Change in size due to Wear & Tear
Presented By : Tanveer Alam, B.Arch. Final Year, Faculty of Architecture, U.P.T.U. Lucknow

2. Definition
Wear and tear is damage that naturally and inevitably occurs as a result of normal
wear or aging.
Causes of Wear & Tear in buildings are:
 Longer period of use (Wear and tear is a form
of depreciation which is assumed to occur even when an item
is used competently and with care and proper maintenance.)
 Internal forces due to thermal movements, moisture
changes, chemical action etc.
Effect due to change of temperature :
 Various building materials are used for the
construction of a building and all the materials have
different coefficient of expansion. Due to changes in
the temperature, the expansion and contraction of the
building components takes place which result in the
changes in the size and shape of the components.

3.  The phenomenon of
wear and tear is a
good demonstration
of the second law of
thermodynamics in
action—roughly
speaking, objects
will stray from their
original form and
function over time
(they are said to
have higher
entropy), unless
energy from an
external force is
used to maintain
them and, in some
cases, restore them
to their original
design.
Definition

4. Examples
 Durable goods (e.g.
automobiles, heavy
machinery, mainframe
computers, musical
instruments, handguns, water
heaters) are designed with
wear parts that are
maintained generally by
replacement of component
parts. One way to determine
if a good is durable or not is
whether a service technician
or repairman would typically
attempt repairs on it. A
specialist may need to be
consulted, such as an auto
mechanic, a computer
technician, a luthier, a
gunsmith, or a plumber.
Broken switch
Rusted water heater Choked pipeline

5. Case Study
1
Wearied off CC flooring
Wearied off CC roofing due to weather
 A fact to understand is that ageing is a
natural phenomenon and would take it’s toll
on every single object, living or dead.
 It is very evident in terns of built
environment that every object used in its
construction has a life time and over the use
it is to be weredoff and hence requires
proper upgrading and maintenance.
Wearied off false ceiling Wearied off wall plaster