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PRESENTATION ON PREFABRICATED
STRUCTURESPRESENTED BY:-
VIPIN SINGH
INTRODUCTION
A prefabrication structure or building is a structure that has several factory built components that are assembled on a site these pre made components can consist of panels, modules or transportable section.
WORD ORIGIN
The word “Prefab” is not an industrial term. The term is an amalgamation of panelized and modular building system. In today’s usage the term “Prefab” is more closely relate to the style of the home.
HISTORY OF PREFABRICATION STRUCTURE
The prefabrication method was widely used in the construction of prefabricated housing in the 20th century such as in united kingdom to replace housing boomed during world war 2nd . Assembling section in the factories saved time on site and cost reduces.
HISTORICAL DEVELOPMENT
CHARACTERISTICS OF PREFABRICATION SYSTEM
• Straight and simple walling scheme• Limited numbers of components• Limited opening in bearing walls.• Limited numbers of doors and windows.
CONCEPT OF PREFABRICATION
The conventional method of building a house is to transport rick, timber, cement, sand, steel and construction aggregates etc. in prefabrication construction only the foundation are constructed in this way, while sections of walls, floors and roof are prefabricated in a factory transported to the site.
PREFABRICATED ELEMENTS
• Flooring• Precast beams• Precast columns• Precast wall panels• Precast slab
PERFORMANCE OF COMPONENTS/ELEMENTS
• Appearance • Structural capability• Thermal properties• Sound insulation• Fire resistance• Moisture resistance
MATERIALS USED IN PREFABRICATION
• Wood• Steel • Cement & it Composited
CLASSIFICATION OF PREFABRICATION
PREFABRICATION
On the bases of
PREFAB ELEMENTS
On the bases ofCONSTRUCTION
On the bases ofLOCATION
Small prefabrication
Medium prefabrication
Large prefabrication
Factory prefabrication
Site prefabrication
Open prefabrication
Close prefabrication
PROCESS OF PREFABRICATION
Step 1). The floors are assembled first.Step 2). Wall panel are attached next with
balls and nails.Step 3). Attach the roof after the rest of
house is constructStep 4). Installed plumbing, electrical wiring
and dry walls.Step 5). Exterior and interior are added.
PREFABRICATION IN MAJOR CONSTRUCTION
• Prefabricated Bridges • Prefabricated houses
PREFABRICATED BRIDGES
Prefabricated Bridges Elements & System (PBES) offers major time saving, cost saving, safety advantages and convenience for travelers.
PREFABRICATED STEEL BUILDING
• Pre-Engineered steel building (PEB steel)• Pre-Fabricated steel building• Steel building kits
ASSPECTS FOR PREFABRICATION STRUCTURE
• Economy• Fast speed• Suitable space and environmental
constraints• Special architectural requirement in
finishing• Consistency in structural quality control.
LIVE EXAMPLES OF PREFABRICATED STRUCTURES
ADVANTAGES OF PREFABRICATED STRUCTURES• Faster construction• Financing of customers• Environmentally friendly• Returns customers• Factory made project
DISADVANTAGES OF PREFABRICATED STRUCTURES• Less flexibility• Manufacturer reliability• Less time spent on each project• Increased dangers• Leakage from joints
TERMINOLOGIES OF PREFABRICATED STRUCTURES
CURRENT USE
AIM OF PREFABRICATION STRUCTURE
• To effect economy in cost.• To improve the quality of the structure.• To speedup the construction since no
curing period is necessary.• To used locally available material with
required characteristics.
FLOW DIAGRAM OF STAGE OF PROCESSNG
CONCLUSION
Due to the flexibility of the structure in the expandability and appearance this prefab house are best choice. From the several advantages like reusability, high scrap value, durability and less construction. Also they can installed in passive weather condition also.
REFFERENCE