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OCTOBER 19,2019


PREENGINEERED BUILDING (PEB’S): ADVANTAGES AND DISADVANTAGES

Pre-engineered buildings are fundamentally steel structures, the structural members like columns, roof truss, purlins and so forth being pre-fabricated in a factory as per the structure specifications and they are raised in the site, consolidated utilizing jolts. The pre-fabricated structural members are usually "I" sections. The foundations of these buildings are the ordinary concrete foundations to help the lighter super structure and to carry heavy loads. The floor of such buildings is additionally worked of customary cement in specific cases.

This kind of pre-engineered building is favoured for:
Low rise industrial buildings
Warehouses
Power plants
Research Centres/Laboratories
Airport hangers
Parking areas
Factories and so forth.

Where it is important to have a huge floor space area that is middle of the road segments are to be maintained a strategic distance from. In these cases traditional cement demonstrates futile on the grounds that over such long ranges, the load because of its own self weight expands, accordingly making the structure basic.

STEPS INVOLVED IN CONSTRUCTION OF A PEB STRUCTURE


DESIGN/PLAN: The steel frames to be utilized in a specific structure is widely designed and fabricated in a company. This design includes the utilization of careful plan software giving no room for any error or change in the structural frames. Accordingly design forms a key aspect in the construction of a PEB.

FOUNDATION: This progression includes the regular development routine with regards to site leeway and working of solid establishments. Typically shallow disengaged foundations are favoured for a PEB since oneself load of the super structure is extremely less. In serious introduction areas like coastal zones pile foundations are laid yet the profundity of the heap is less when contrasted with the ordinary solid structures. They regularly like to lay a level chunk base of PCC beneath the platform (disengaged balance of shallow depths) to forestall its immediate contact with the dirt. The segments of the super structure are rushed to the platform.

ERECTION OF STEEL FRAMES: The evaluation of steel utilized shifts dependent on the basic requirement, for example on the off chance that it is a one story building, at that point the thickness of the steel gave can be less (.9mm to 1.2 mm) yet for a warehouse (large structure) thickness to be given expands (4mm to 50mm).The steel columns and bars are darted together. Steel is additionally utilized in material of a one story building and for the two stories and rooftops in at least two story structures.

WALLS: The last final step in construction of a PEB is building the dividers. For the most part for a PEB the walls are worked with various scope of materials like granite, fiber cement insulated boards, panels, insulated steel or aluminium panels, conventional brick work, stone cladding and so on., the decision relies on the client. Be that as it may, by and large insulated steel panels are favoured in view of their basic dependability.

ADVANTAGES OF PRE-ENGINEERED BUILDING


REDUCED CONSTRUCTION TIME: When the foundation is being worked in site, the structural members are all the while fabricated in industries. Since the erection time is additionally less it brings about the early completion of the structure.
LESS MANPOWER AT SITE: Most of the work in a PEB construction is done in the industries consequently the requirement of manpower at the site is extremely less nearly.
DECREASE IN COST: Since the two materials and manpower is limited the general expense of construction is reduced.
FLEXIBILITY IN DESIGN: The steel structural members are planned in software and are fabricated with machines; accordingly wanted shape can be accomplished with no trade off. Henceforth the PEB can be structurally flexible.
SCOPE FOR FUTURE EXPANSION: Since bolted connections are just utilized, the length savvy extension in a PEB turns out to be progressively clear.
LOW MAINTENANCE: Modern metal completions and coatings will help the steel panels to resist corrosion, chemical attack and so on., and furthermore the steel surfaces can be effectively fixed whenever harmed.
SEISMIC RESISTANCE: The super structure made of steel is light in weight and adaptable enough to offer more prominent protection from seismic waves when contrasted with conventional concrete structures.

DISADVANTAGES OF A PEB STRUCTURE


SUSCEPTIBLE TO CORROSION: If not appropriately maintained the steel frames are helpless to erosion, hence uncommon coatings ends up important to resist the corrosion of steel.
LOW THERMAL RESISTIVITY: Steel being a metal is great at directing heat, in this manner it lessens the thermal comfort in the structure.
LOW FIRE RESISTANCE: During fire, this kind of structure turns out to be progressively vulnerable to harm due its conductivity.