PEB Design & Engineering
PEB design and engineering fixes a pre-engineered building's tapered steel frame, bracing, purlins, girts and connections before fabrication, working to IS 800 and IS 875. Because the frame cannot change once members are fabricated, clear span, crane loads, site wind and seismic loading and any future extension have to be settled at design stage.
By Dhruv Agarwal · · 2 min read
What we deliver
Design and engineering for pre-engineered buildings — load assessment, frame design, bracing, secondary members, connections and fabrication drawings — as the first stage of a PEB delivered from design to erection.
A pre-engineered building is decided almost entirely on the drawing board. Once members are fabricated, the frame is fixed. That makes the design stage the cheapest place to get clear span, crane capacity, future extension and cladding right.
Scope of works
| Stage | What we deliver |
|---|---|
| Requirement | Dimensions, clear height, use, cranes, mezzanines |
| Load assessment | Dead, imposed, wind and seismic loads per IS codes |
| Frame design | Primary frames with tapered members, spacing, bracing |
| Secondary members | Purlins, girts, sag rods, eave struts |
| Connections | Bolted moment and shear connections, base plates |
| Foundation loads | Reactions issued for civil foundation design |
| Drawings | General arrangement, anchor bolt plan, fabrication details |
What drives the design
Clear span and eave height · bay spacing · crane type and capacity · mezzanine and roof-mounted equipment loads · wind and seismic loading for the site · roof slope and cladding type · future extension provision.
Where projects go wrong
- Crane loads confirmed late. They change the frame, the columns and the foundations. Adding them after design is a redesign.
- Foundation design done separately from the frame. Anchor bolts that do not match the base plates stop erection on day one.
- No provision for extension. Cheap at design stage, expensive afterwards.
- Roof-mounted equipment ignored. Solar arrays, HVAC units and water tanks add loads the frame must carry.
- Site loads copied from another project. Wind and seismic loading depend on the location and have to be established for each site.
Why Hagerstone
PEB delivered from design to erection within the same organisation that does the civil foundations, the MEP and the interiors, so frame reactions, anchor bolt plans and service openings are coordinated internally.
15 welders and 15 fitters in-house, with welding, gas cutting and lifting equipment owned, under ISO 9001 / 14001 / 45001 and 79+ quality checkpoints.
Standards referenced
Steel design to IS 800:2007. Dead, imposed and wind loads to IS 875 (Parts 1-3). Earthquake-resistant design to IS 1893 (Part 1).
Standards referenced
- IS 800:2007 — General construction in steel — code of practice (Bureau of Indian Standards)
- IS 875 (Parts 1-3) — Dead, imposed and wind loads (Bureau of Indian Standards)
- IS 1893 (Part 1) — Criteria for earthquake resistant design (Bureau of Indian Standards)
Frequently asked
Related
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- PEB Erection and Site Works: Where Steel Programmes Slip
- PEB Insulation and Thermal Performance: Stopping Heat and Condensation