Simna Engineers designs, fabricates and erects pre-engineered buildings, PEB warehouses, industrial sheds and heavy structural steel for clients in India and the Gulf. Every member is cut, welded and coated in the shop, tagged against the erection drawing, and bolted together on site — clear spans to 60 000 mm, erection in weeks rather than seasons.
Simna Engineers works at the point where design meets the shop floor. We take a building brief — footprint, eave height, crane capacity, what goes inside — and return a stamped structural design, a fabricated kit of parts, and a site team that puts it up. Because the same people carry a project from analysis to handover, nothing gets lost in the gap between the consultant, the fabricator and the erector.
A pre-engineered building is not a shed. It is a complete structural system: primary frames built up from plate so that section depth follows the bending moment, cold-formed secondary members, a coated steel envelope, and a bolted connection schedule fixed before the first footing is cast. That single idea — steel only where the moment needs it — removes 15–30% of the tonnage a hot-rolled equivalent would carry, and it is why a PEB priced per kilogram still lands well below conventional construction per square metre.
We work to AISC 360, MBMA and IS codes, with wind and seismic cases taken from the project's own location — ASCE 7 and IBC for Gulf work, IS 875 and IS 1893 for India. Material is ASTM A572 Gr.50 or IS 2062 E350; welds are qualified to AWS D1.1 with ultrasonic testing on full-penetration joints; surfaces are blasted to SA 2.5 and coated to the exposure. Mill certificates, weld records and coating thickness readings travel with the mark numbers.
Six lines of work, one accountable contract. Each package can be taken on its own — supply only, supply and erect, or full turnkey.
As an experienced PEB manufacturer and supplier, we carry the whole building — concept layout, stamped structural design, fabrication, delivery and erection — under one scope of work.
Distribution centres and logistics sheds designed around what moves inside them: racking pitch, dock levels, eave height for multi-tier pallets, and cold-chain envelopes where temperature has to hold.
Roll-formed C and Z sections in 1.5–3.0 mm, cut to length with bolt holes punched in line, so lapped runs land on the frame without site drilling.
Roof and wall sheeting for industrial, commercial and residential envelopes, supplied with the flashings, fasteners and ventilation that actually keep water out.
Factory sheds and workshops with crane runways, mezzanines and service openings designed in from the start rather than cut in afterwards.
Built-up girders, pipe racks, platforms and stairs, plus fibre-laser profiling of gussets, base plates and cleats nested to keep plate wastage down.
A live model of a 30 000 × 36 000 mm clear-span frame at 8 000 mm eave. It builds itself in the order a real building goes up; pick a member group on the right and the model isolates it.
An exploded view of a typical Simna building — main clear-span bay with a lean-to annex and dock face. Numbers match the way parts are listed on our drawings and bill of materials.
Eave gutter, flashings, framed openings and pilot doors are supplied with the package and shown on the erection drawings.
The sequence matters: steps 03 and 04 run at the same time, and that overlap is where the schedule saving comes from.
For single-storey industrial and logistics buildings in the 2 000–20 000 m² range. Conventional construction still wins where the form is bespoke or the building goes above four storeys — we will say so when that is the case.
| Factor | Pre-engineered building | Conventional construction |
|---|---|---|
| Erection time | 6–12 weeks | 6–18 months |
| Cost per m² | Typically 30–35% lower | Higher labour and waste content |
| Clear span | Up to 90 000 mm column-free | Usually under 30 000 mm |
| Quality control | Shop-controlled, traceable per mark | Varies with site labour |
| Material waste | 30–40% less by weight | High on-site offcuts |
| Extension later | Bolt on bays or raise the eave | Difficult and costly |
| Architectural freedom | High within a framed envelope | Unlimited form |
| Above 4 storeys | Not the right tool | Better suited |
| Liability | Single source, one warranty | Split between trades |
Move the sliders to see how span and eave height drive tonnage, section depth and programme. Send the figures across and we will price them properly against your site's wind zone and finish spec.
Indicative weights from typical frame geometry — not a quotation. Firm figures need site location, wind and seismic zone, crane capacity and finish specification. Send these figures to our team →
Building envelopes, erection and the secondary sections and sheeting that go with them.
Gulf projects fail at the coating and the panel, not the frame. Design temperatures near 50°C move thermal expansion joints, airborne sand abrades soft finishes, and UV bleaches cheap polyester. We specify substrate, paint system and fastener metallurgy for the site, then document what was actually applied.
A steel structural system designed and fabricated in a factory, then bolted together on site. Frames, purlins, cladding and accessories are engineered as one package to the loads of a specific site, which is what separates a PEB from a generic prefab shed. It is the standard choice for warehouses, factories, industrial sheds and large commercial spaces because it is faster, leaner in material and consistent in quality.
For a 2 000–5 000 m² building, roughly 16–24 weeks from contract to handover: engineering and approvals 3–6 weeks, fabrication 6–12 weeks, delivery 2–5 weeks for export, erection 4–8 weeks. Site preparation and foundations run in parallel with fabrication. An equivalent conventional build usually takes 9–18 months.
Span and eave height first, because they set the primary tonnage; then crane capacity, insulation, wind and seismic zone, finish specification and how much civil work sits in scope. Two quotes for the same footprint can differ 20–40% purely on steel grade, panel thickness and what has been left out — so compare the specification, not the headline figure.
Yes. Design, engineering, fabrication, transport, erection and handover under one contract, with a single point of accountability for warranty and remediation. We also supply on a material-only or supply-and-erect basis if you already have a contractor.
We are set up for medium and large-scale work — warehouses, factories, industrial sheds and commercial buildings. Smaller packages are taken on a supply basis where the logistics make sense. Send the dimensions and we will tell you honestly whether we are the right fit.
Yes, and it is worth saying so at design stage. If expansion is anticipated, end frames and bracing are detailed for it, and you add bays by bolting on. Height increases and mezzanine additions are also possible; every site connection is bolted, not welded.
India from our Gorakhpur works — Uttar Pradesh, Bihar, Delhi NCR, Haryana and beyond — and export projects across the Gulf, where we handle authority submissions and site coordination.
Yes — erection supervision, technical support during installation, structural inspection, expansion advice, and warranty support on the frame and coating.
Length, span, eave height, site city and what goes inside — enough for a preliminary layout and an indicative figure.
G-34, Sector-13, GIDA,
Gorakhpur, U.P. 273209
+91 91294 16070
+91 73077 86510 · +91 91700 65762
Send length, span, eave height and site city. Anything already set on the estimator is attached automatically.