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[PDF] Standardisation, Codification and Variety. MVCT 102 - Construction Materials
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MVCT 102 - Construction
Materials
UNIT 1. Material Science:
PART B – Standardisation,
Codification and Variety.
STANDARDISATION, CODIFICATION AND VARIETY IN CIVIL ENGINEERING
·
Standardization
save time, money, materials, labors etc.
·
In very
early days’ people uses palm, hand, cubit to measure but lack of equity person to
person.
Standards:
A standard is a
result of particular standardization, efforts, approved by recognized authority.
1.
A document
containing sets of condition to be fulfilled.
2.
A fundamental
unit or physical constant.
3.
An
object for physical comparison.
CODING:
An action of
devising a brief and systematic combination of letters, numerical and/or for
the purposes of representing a product or an abstract matter.
The major purpose
of coding in the field of standardization is to secure brevity in designation,
while ease of identification will be obtained by decoding.
Code
Marking or
reference which serve dual purpose of complete identity, & similarity with
others.
Advantages of coding
·
Identification
·
Classification
·
Marking
·
Quality
& Quality control
·
Interchangeability
·
Dimensional
interchangeability
·
Reliability
·
Standard
VS Specification
Classification of STANDARDS:
1 Basic Standards
2 Advanced Standards
Applied on: quantity
of materials, products and components, tests, sampling, quality controls,
construction.
Requirement of Standards:
1.
Dimensional
2.
Functional
3.
Quality
4.
Interchangeability
5.
Communication
AIM of Standardization
A.
To achieve
maximum overall economy in building n term of
§ Cost
§ Human effort and time
§ Consumption of essential material (scare
material) and greater use of locally available materials
This involves judicious choice of building material,
unit, product, components, design and construction methods.
B.
To
ensure maximum convenience in use:
It
leads to simplification, rationalization, variety, reduction and
interchangeability of building products, units and components and freezing of critical
dimension to ensure compatibility with adjoining parts
C.
To
adopt the best solution of recurring problem consistent with A & B
§ Available knowledge
§ Upto-date development
§ Results of research and development work is
taken into account to seek better option and more rational to the problem.
D.
To
define the requisite level of quality
§ Practical evaluation of quality and its attainment
are convenient with A & B
§ Standardization needs to provide sampling, procedure,
grading scheme.
BASIC Process
I.
To decide technical content of
the standards.
II.
To cast the standard in the
standard form
III.
To ensure that the standard
formulated following agreed procedure based on the consensus principle.
Methods of development of national standards
1 Existng Standard Method
2 Techniical Committe Methods
Existing Standard Methods
Technical Committee Method
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