How? IS Code and National Building Code NBC Provision:MVCT202 Prefabrication construction and its design technology
Sunday, May 7, 2017
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HOW PREFABRICATION ?
PREFABRICATION: IS CODES
As in India there is no specific IS code but following can be used for prefabrication construction
- IS 15916: Precast Construction
- IS 875: Design Loads
- IS 456: Concrete
- IS 1893 and IS 13920: Seismic Design
Aspects to be considered as per the
Recommendation of IS: 15916: 2011
- 1 Effective utilization of spaces2 Straight and simple walling scheme3 Limited sizes and numbers of components4 Limited opening in bearing walls5 Regulated locations of partitions6 Standardized service and stair units7 Limited sizes of doors and windows with regulated positions8 Structural clarity and efficiency9 Suitability for adoption in low rise and high rise building10 Ease of manufacturing, storing and transporting11 Speed and ease of erection and12 Simple jointing system
Types of Precast System according to
IS: 15916: 2011
National Building Code of INDIA
•Part
6 Structural Design
Section 7, System Building & mixed
composite construction: 7A Prefabricated concrete
Section 7, System Building & mixed
composite construction: 7B System Building and mixed composite construction.
SCOPE:
This sub-section
gives recommendations regarding
modular planning, component
sizes, prefabrication
systems, design
considerations, joints and manufacture, storage, transport and erection of prefabricated
concrete elements for use in
buildings and such related
requirements for
prefabricated
concrete
1 SCOPE
2 TERMINOLOGY
3 MATERIALS, PLANS AND SPECIFICATIONS
4 MODULAR CO-ORDINATION, ARCHITECTURAL TREATMENT AND FINISHES
5 COMPONENTS
6 PREFABRICATION SYSTEMS AND STRUCTURAL SCHEMES
7 JOINTS
8 TESTS FOR COMPONENTS/STRUCTURES
9 MANUFACTURE, STORAGE, TRANSPORT AND ERECTION OF PRECAST ELEMENTS
10 EQUIPMENT
11 PREFABRICATED STRUCTURAL UNITS
2 TERMINOLOGY
3 MATERIALS, PLANS AND SPECIFICATIONS
4 MODULAR CO-ORDINATION, ARCHITECTURAL TREATMENT AND FINISHES
5 COMPONENTS
6 PREFABRICATION SYSTEMS AND STRUCTURAL SCHEMES
7 JOINTS
8 TESTS FOR COMPONENTS/STRUCTURES
9 MANUFACTURE, STORAGE, TRANSPORT AND ERECTION OF PRECAST ELEMENTS
10 EQUIPMENT
11 PREFABRICATED STRUCTURAL UNITS
Material Requirement
Easy availability;
Light
weight for easy handling and transport;
Thermal
insulation property;
Easy
workability;
Durability;
Durability;
Non-combustibility;
Sound
insulation;
Economy;
and
Any
other special requirement in a particular application
Plans and Specification
Such drawings shall describe the
elements and the structure and assembly including all required data of physical
properties of component materials. Material specification, age of concrete for demoulding, casting/erection tolerance and type
of curing to be followed.
Details of connecting
joints of prefabricates shall be given to an enlarged scale.
Site or shop location of services, such as installation of piping, wiring or other
accessories integral with the total scheme shall be shown separately.
Data sheet indicating the location of the inserts and acceptable tolerances for supporting the prefabricate during erection, location and position of doors/windows/ventilators, etc, if any.
The drawings shall also clearly indicate location of handling arrangements for lifting
and handling the prefabricated elements. Sequence of erection with critical checkpoints and measures to avoid stability failure during construction stage of the building
