INTRODUCTION Pre-Engineered Buildings can be adapted to suit a wide variety of structural applications, the greatest economy will be realized when utilizing standard details. An efficiently designed Pre-Engineered Building can be lighter that the conventional steel buildings by up to 30%. Tailor made building based on client’s requirement & actual design calculations using tapered sections. Designing and casting is done in factory, building components are brought to site then fixed/jointed at the site. All connections are bolted.
These are the structures basically produced at the factory with high tensile steel material by collecting complete information of the shed/building (viz; Length, Width, Height etc,). The entire design of column, rafters and other accessories is based on International structural standards and involve high technical welding and quality production. Video- How drawing is drawn using STRUCAD?
Insulation (PEBI) Uniformly textured inorganic glass fibers bonded together by a non-water soluble and fire-retardant thermosetting resin. It is free from coarse fibers and shot due to its mineral composition. PEBI is non-toxic and not hazardous to health.
Design Criteria DESIGN METHOD: Allowable stress design method is used as per the AISC specifications. DEFLECTIONS: Unless otherwise specified, the deflections will go to MBMA, AISC criteria and standard industry practices. PRIMARY FRAMING: Moment resisting frames with pinned or fixed bases.
SECONDARY FRAMING: Cold formed Z sections or C sections for purlins or girts designed as continuous beams spanning over rafters and columns with laps. LONGITUDANAL STABILITY: Wind load on building end walls is transferred through roof purlins to braced bays and carried to the foundations through diagonal bracing. DESIGN SOFTWARE The latest software that is used for design is STAAD 2007.
ERECTION SYSTEM Preparation for Erection2. Pre Erection checks3. Receiving Materials at site4. Unloading Containers Erection of the Framing7. Preparation of the First Bay8. Main frames9. Mezzanine floors10. Crane Beams
Sheeting & Trimming Sheeting preparation Sheeting the walls Sheeting the roofs Miscellaneous trimmings Fascia
Self weight Self weight 30% lighter More heavy Primary Member is Primary members are tapered section Hot rolled “I” section Secondary members Secondary members are are light weight rolled “I” or “C” section framed “Z” and “C” which are heavy in section weight.
Delivery – average 6 to 8 Delivery- average 20 to weeks 26 weeks Foundation-simple design, Foundation- expensive, easy to construct & light heavy foundation wt. required. Erection cost and time- Erection cost and time- accurately known 20% more than PEB
Overall price - Higher Overall price -30%lower price per square meter. Architecture-achieved at Architecture- achieved at low cost higher cost Erection process is easy, Erection process is slow fast, step by step and extensive field labor is required.
APPLICATIONS Industrial Buildings Warehouses Commercial Complexes Showrooms Offices Schools Indoor Stadiums Outdoor Stadiums with canopies Gas Stations Metro Stations, Bus Terminals, Parking Lots Primary Health Centers, Angan wadi’s And many more…
Industrial Indoor Stadiums BuildingParking lots Railway Station
Aircraft Hangars Metro Station Wear house High rise Building
ADVANTAGES Aesthetic Appeal Faster Completion Economical Seismic Resistance Ease of Expansion Maintenance Free Large Clear Spans Controlled Quality
CONCLUSION PEB concept has been very successful and well established in North America, Australia and is presently expanding in U.K and European countries. PEB construction is 30 to 40% faster than masonary construction. PEB buildings provide good insulation effect and would be highly suitable for a tropical country like India. The pre-engineered building calls for very fast construction of buildings and with good aesthetic looks and quality construction. Pre-engineered Buildings can be used extensively for construction of industrial and residential buildings.
REFERENCES Various websites from internet PEB project Vigyan Ashram, Pabal