Introduction of PRE Engg Building

Components of Pre Engineered Buildings

1. Primary Frame

2. Secondary Structural Elements

3. Roof and Wall Panels

4. Sandwich Panels

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• Wall Loading Calculations
• Shower Pan Cement
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• Different Types of Shovels
• Dry Pack Mortar
• How Many Stairs in a Flight
• How to Find the Contour Interval
• Plywood Strength Psi

Components of Industrial Building

• Purlins
• Sag rods
• Principal Rafters
• Roof Truss
• Gantry Girders
• Bracket
• Column and Column base
• Girt Rods
• Bracings

Advantages of Pre-Engineered Buildings

1. Quality control of construction:

2. Economy

3. Less Maintenance:

4. Time Required for PEB Construction

5. Warranty Period of Pre Engineered

6. Erection of Pre-Engineered Building

Disadvantages of Pre Engineered Buildings

• This type of structure can be attractive when it is left exposed.
• The parts of the pre-engineered buildings are susceptible to corrosion.
• The insulating of the building will furthermore increase the construction cost.

Use of Pre Structure

• For the Construction of Low Rise Industrial Buildings.
• Power Plants
• Warehouses
• Laboratories
• Airport Hangers
• Parking Lots
• Factories

How Pre Engineered Building Is Better Than Conventional Building?

Applications of Pre Engineered Buildings

• Warehouses
• Factories
• Workshops
• Offices
• Gas Stations
• Vehicle Parking Sheds
• Showrooms
• Aircraft Hangars
• Metro Stations
• Schools
• Recreational
• Indoor Stadium Roofs
• Outdoor Stadium Canopies
• Bridges
• Railway Platform Shelters

Pre Engineered Building Design Calculations

• First upon set up the section of the required size and breast locations based on the geometry and loading.
• Then calculate the shear moment and axial force at each point for each load combination.
• Identify and compute allowable share stress and allowable bending stress in the compression and tension at each analysis point.
• Calculate the corresponding stress ratio for shear and axial and bending based on the allowable stresses.
• Design the optimum location and check whether the predicted size is as per the manufacturing constraints or not.
• At the end of the design process, the analysis of the structure is done for further optimization.

Load Calculations for Pre-Engineered Buildings

• Dead Load Calculations: The dead load includes self-weight of purlin, roof and wall sheeting and other structural components.
• Live or Imposed Load Calculations: This type of load should be considered as per IS 875 (Part 2)
• Wind Load Calculations: Considered the basic wind speed as per the space of the structure. The wind pressure is calculated as per the IS 875 (Part 3)
• Seismic Load Calculations: Earthquake loads can affect the whole structure so that it is necessary to consider it during the designing.
• Load Combinations: As per IS 1893  2002 (Part 1), 7(DL ± LL), 7(DL ± EL) , and 3(DL + LL ± EL)

Peb Structure

Peb Shed

Peb Full Form

Components of Industrial Building

1. The primary steel frame consists of columns, rafters and bracing. The example shown is a portal frame. However, it is equally applicable to other types of structural frames.
2. The secondary steelwork consists of side rails and purlins for the walls and roof respectively. These members serve three purposes:
   • To support the envelope.
   • To transfer load from the envelope to the primary steel frame
   • To restrain the primary steel frame members
3. The roof and wall cladding, whose functions include some or all of the following:
   • Separating the enclosed space from the external environment
   • Transferring load to the secondary steelwork
   • Restraining the secondary steelwork
   • Providing thermal insulation
   • Providing acoustic insulation
   • Preventing fire spread
   • Providing an airtight envelope
   • Providing ventilation to a building (ventilated or unventilated roofs and walls).

What Is a Pre Engineered Metal Building?

What Is Conventional Building?

Pre Engineered Buildings Vs Conventional Buildings

Advantages of Pre Engineered Steel Buildings

• Time-Saving. While construction cycles of standard structures take a longer time to complete, pre-engineered structures take fewer months or weeks.
• Cost-Saving.
• Low-maintenance.
• Weather Resistant.
• Energy Efficient.
• Durable.
• Customizable.

Peb Building

Peb Structure Meaning

The Disadvantage of the Peb Is

Pre Engineered Building Components

• Primary Components: Primary Components consist of mainframes, columns, and rafters.
• Secondary Components: Purlins, girts, eave struts, and bracings make up the secondary components of pre-engineered buildings.
• Cladding or Sheeting.
• Accessories.

Types of Peb Structures

• Rigid Frames: Rigid Frames are structural skeletal members bearing the load of the entire building.
• End Wall Frames.
• Wind Bracing.
• Crane Brackets.
• Roof Purlin.
• Wall Girts.
• Eave struts.
• Sag Rods.

Pre Engineered Buildings Advantages and Disadvantages

• Faster Construction
• Cost-Effective
• Customization and Flexibility
• Structural Strength and Durability
• Energy Efficiency

• Design Limitations
• Site Limitations
• Transportation and Logistics
• Dependence on Manufacturer
• Local Building Codes and Regulations

Pre Engineered Steel Buildings

Engineered Structure

Conventional Steel Building

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• Definition of Shear Force and Bending Moment | What Is Shear Force | What Is Bending Moment | Relation Between Loading, Shear Force & Bending Moment