In this guide — 8 sections
Warehouse construction begins with one foundational decision: Pre-Engineered Building or Reinforced Concrete. Cost, timeline, span, fire rating, durability and expansion flexibility all flow from that single choice.
PEB Against RCC: ten parameters compared
PEB is preferred for large-span storage warehouses above 15,000 sq.ft — faster to erect, more cost-effective for column-free spans above 18m, and easy to expand. RCC is preferred for manufacturing facilities with heavy floor loads, chemical storage, mixed warehouse-office buildings, and sites where long-term durability in a coastal-influence climate is the priority.
For the same comparison applied to commercial buildings generally, see PEB vs RCC.
If You Choose PEB, the coastal specification is not optional
The coastal corrosion specificationChloride-laden air accelerates corrosion on unprotected steel — which makes three items non-optional on any PEB structure here.
Corridors and which authority governs
The primary industrial and logistics sites are Sriperumbudur for auto components, electronics and export manufacturing; Oragadam for auto, heavy engineering and SEZ; Ambattur Industrial Estate for MSME and light engineering; Red Hills and Poonamallee for logistics and distribution; and Guindy Industrial Estate for legacy light manufacturing. Approval authority varies by location — and, for one of them, by cargo:
Four approval authorities
Which one applies depends on the site — and the goodsAmbattur, Guindy, Poonamallee
Standard commercial and industrial building plan approval via the online portal, fire NOC from TNFRS, and a factory licence from the Inspector of Factories for manufacturing premises.
Peri-urban Sriperumbudur approach, some Red Hills areas
Directorate of Town and Country Planning, with a different approval format and timeline from CMDA. Confirm which body applies before design begins.
Sriperumbudur, Oragadam notified zones
SIPCOT runs its own building plan approval process for allotted plots — faster in some categories — with a separate utility connection process.
Any zone, if goods are notified hazardous
The Directorate of Industrial Safety and Health regulates storage of hazardous chemicals and flammable goods. A DISH NOC is required in addition to standard building approvals.
Three Planning Essentials decided before structural design
Floor loading
The most critical planning decision, and the one most routinely underspecified. Three tiers:
3–5 t/m²
General storageStandard dry warehousing and distribution, with pallet racking to moderate heights and conventional forklift traffic.
5–10 t/m²
Heavy rackingHigh-bay racking, dense pallet storage and heavier materials handling equipment operating across the full floor plate.
10 t/m²+
ManufacturingMachinery foundations, heavy engineering and process equipment — where an RCC frame handles the loading naturally.
Basic dry storage with hand pallet trucks needs a minimum 3 t/m². A racking warehouse with 3–5 tonne counterbalanced forklifts needs 5–7.5 t/m² on the slab. A high-bay automated storage and retrieval system requires foundation design derived from the racking supplier’s own loading specification. Specify floor loading before structural design begins, not after.
Clear height
The usable internal height from finished floor to the lowest obstruction — typically the portal frame haunch or the underside of a roof purlin. It determines racking density and forklift type. Standard pallet racking to four-high needs roughly 8m clear; narrow-aisle high-bay racking to eight-high needs 12–14m. Specify the intended racking system and maximum stack height before the structural frame height is decided.
Dock design
The loading dock is the revenue-critical zone of a logistics warehouse, and is frequently designed as an afterthought. The parameters that matter:
- Dock sill height: 1,200mm for a standard truck, 1,100mm for a low-floor trailer
- Truck apron depth: minimum 35m for articulated trailer turning
- Dock leveller specification, matched to the vehicle mix you actually expect
- Dock seal or shelter for rain protection
- Dock drainage to prevent interior flooding — a genuine risk during the north-east monsoon
All five are architectural decisions that must be made before structural drawings are produced. Apron depth in particular constrains the building footprint on the plot, so it cannot be resolved after the shed position is fixed.
Structural System, Floor Loading, Approval Authority
Settle all three at site assessment stage. Every one of them is cheap to decide on paper and expensive to discover during construction.
Industrial Flooring build-up and reinforcement
The baseline specification is 150mm well-compacted PCC sub-base, a 150mm M25 RCC structural slab with steel fibre or mesh reinforcement, and a 50mm dry-shake hardener topping in iron oxide or quartz aggregate, power-trowelled to a smooth dense finish. Floor flatness for racking should be a minimum FF 35 per ASTM E 1155. Three cases:
- Standard storage, hand pallet and light forklift: 150mm PCC plus 150mm M25 RCC slab plus 50mm hardener topping — a total build-up of 350mm from formation level.
- Counterbalanced forklift, 3–5 tonne: the same slab construction, but specify steel fibre reinforcement at 35–40 kg/m³ as an alternative to conventional mesh, for better crack control under heavy moving loads.
- High-bay racking, rack-supported or very narrow aisle: specialist floor design from the racking supplier’s loading specification, possibly a pile-supported slab in poor soil. Flatness is critical here — floor deformation under rack column load can destabilise high racking.
Consider armoured joint filler at construction joints wherever heavy forklift operation is expected. See commercial flooring for material comparison across building types.
Seven Cost Drivers and why BOQ matters here
The per-sqft rate is especially misleading for industrial projects, where the specification premium — industrial flooring, dock equipment, fire suppression, crane infrastructure — represents 30–50% of total project cost and is routinely excluded from contractor quotes:
- Structural system choice: PEB is typically more cost-effective for large-bay, large-area warehouses; RCC is more competitive for smaller footprints and heavy-load manufacturing.
- Clear height: every additional metre increases portal frame column height, crane rail cost where applicable, and cladding area. Cost impact is non-linear above 10m, so specify the racking system rather than adding height for comfort.
- Floor specification: an industrial hardener floor with steel fibre reinforcement costs significantly more than a standard slab, and a pile-supported slab in weak soil is a major cost item on its own.
- Fire protection: NBC 2016 Part 4 requirements and fire NOC conditions bring sprinkler system, hydrant network, hose reels, detection panel and intumescent coating on structural steel for PEB — all real and significant line items.
- Dock equipment: levellers whether mechanical or hydraulic, seals or shelters, and dock doors add meaningful cost per loading bay. Specify dock count and equipment type before BOQ preparation.
- Crane infrastructure: an EOT crane requires gantry girder design, crane rail, runway beam, electrical supply and controls. Capacity and span must be specified before structural design begins — retrofit is expensive.
- Sustainability provision: rooftop solar structural allowance and DC conduit, rainwater harvesting, LED high-bay lighting now standard, and EV charging in the truck apron — all explicit BOQ decisions rather than assumptions.
Eleven Stages, and the planning checklist
PEB warehouse: 20–32 weeks from design brief to occupancy. RCC warehouse: 28–42 weeks. SIPCOT plots may have faster approval pathways; CMDA and DTCP timelines vary by jurisdiction and queue:
Site evaluation and soil test · 1–2 wks
Confirm authority and zoning classification — industrial, commercial or mixed. Heavy industrial use may require additional clearance.
Decides the pathwayPlanning and approval brief · 1–2 wks
Identify every approval required: building plan, factory licence where applicable, fire NOC, pollution clearance, and DISH NOC if hazardous goods are stored.
Architectural, structural and PEB vendor design · 3–5 wks
For PEB the vendor designs the portal frame from the loading brief; for RCC the structural engineer designs from the soil test. Both co-ordinated by the architect for approval drawings.
Last cost-free change pointApproval filing · 6–16 wks
Industrial buildings outside CMDA fall under DTCP or SIPCOT, with separate pathways and significantly varying timelines.
Foundation construction · 3–5 wks
PEB uses isolated pad footings for portal frame columns; RCC uses isolated or raft per soil test. M25 throughout — industrial loads require deeper footings than residential.
Structural frame · 6–10 wks PEB / 12–18 wks RCC
PEB portal frame erection follows a fabrication lead time of typically 6–8 weeks from order; RCC follows a conventional construction schedule.
Roofing, cladding and fascia · 3–5 wks
PEB uses sandwich panel or single-skin sheeting with insulation, plus skylights and ridge vent; RCC uses a concrete slab or metal deck roof on the frame.
Industrial flooring · 2–3 wks
Minimum 150mm PCC plus 50mm hardener topping for standard forklift operation, with heavy-duty specification for racking and pallet loads.
MEP · 4–8 wks
High-bay LED lighting, three-phase power, fire hydrant and sprinkler per NBC 2016 and fire NOC conditions, and a compressed air line for manufacturing.
Dock and yard · 2–3 wks
Dock leveller height, truck apron width and turning radius for articulated trailers — critical for logistics warehouses.
Testing, NOC and handover · 2–3 wks
Fire NOC inspection, electrical installation certificate, completion certificate, and factory licence inspection where applicable.
Approval disclaimer. Requirements for industrial and warehouse buildings depend on the specific plot’s authority, zoning classification, occupancy type, stored goods and building height.
Everything set out here is indicative. Confirm all approval requirements with a COA-registered architect before design begins.
Warehouse planning checklist
Swipe or scroll to see the full table →
| Check | Confirm before design |
|---|---|
| Structural system decided: PEB or RCC, from span requirement, floor loading and durability priority | |
| Floor loading specified in t/m² before structural design begins | |
| Clear height specified from the intended racking system and maximum stack height | |
| Approval authority confirmed: CMDA, DTCP or SIPCOT for your specific site | |
| Hazardous goods status determined — DISH NOC requirement established before site selection | |
| Factory licence requirement confirmed if the premises are for manufacturing | |
| Fire NOC requirements and sprinkler scope confirmed against NBC 2016 and TNFRS conditions | |
| Dock count, sill height and apron depth designed before the building footprint is fixed | |
| Crane capacity and span specified before structural design, if EOT crane provision is required | |
| Coastal corrosion specification confirmed for PEB: galvanised purlins and girts, coated cladding, maintenance schedule | |
| Full itemised BOQ requested, covering flooring, dock equipment, fire suppression and crane infrastructure | |
| Sustainability provisions decided: solar structural allowance, rainwater harvesting, high-bay LED, EV charging |
Crane Capacity and Clear Height Are Structural Decisions, Not Fit-Out Ones
Both are set at structural design and both are costly to revisit — specify the racking system and crane duty before the frame is engineered.
Projects that skip the three upfront decisions do not avoid them. They discover them as expensive problems during construction.
— Why the site assessment earns its fee
Frequently Asked Questions
Should I build a PEB or RCC warehouse?
PEB is preferred for large-span storage warehouses above 15,000 sq.ft — faster to erect, more cost-effective for column-free spans above 18m, and easy to expand at the gable end. RCC is preferred for manufacturing with heavy floor loads, chemical storage, mixed warehouse-office buildings, and where long-term durability in a coastal-influence climate is the priority.
What special specification does PEB need in Chennai?
Chloride-laden coastal air accelerates corrosion on unprotected steel. A PEB structure here must specify hot-dip galvanised purlins and girts, factory-applied polyester or PVDF coated cladding, and a corrosion management maintenance schedule. Without these, visible corrosion appears within five to seven years in inner industrial zones.
Which authority approves warehouse construction?
It depends on location. CMDA covers Ambattur, Guindy and Poonamallee; DTCP covers peri-urban areas including the Sriperumbudur approach and parts of Red Hills; SIPCOT runs its own process for allotted plots in notified zones such as Sriperumbudur and Oragadam. Separately, DISH approval applies wherever notified hazardous goods are stored, regardless of location.
What floor loading does a warehouse need?
Basic dry storage with hand pallet trucks requires a minimum 3 t/m². A racking warehouse with 3–5 tonne counterbalanced forklifts requires 5–7.5 t/m² on the concrete slab. High-bay automated storage requires foundation design derived from the racking supplier’s loading specification. Specify it before structural design begins.
What clear height do I need?
Standard pallet racking to four-high requires approximately 8m clear height. Narrow-aisle high-bay racking to eight-high requires 12–14m. Clear height is measured from finished floor to the lowest obstruction, typically the portal frame haunch. Specify the racking system and maximum stack height before the structural frame height is decided — cost impact is non-linear above 10m.
What is the industrial flooring specification?
Minimum 150mm well-compacted PCC sub-base, a 150mm M25 RCC structural slab with steel fibre or mesh reinforcement, and a 50mm dry-shake hardener topping power-trowelled to a dense finish — a total build-up of 350mm from formation level. Floor flatness for racking should be minimum FF 35 per ASTM E 1155.
How long does warehouse construction take?
A PEB warehouse takes 20–32 weeks from design brief to occupancy; an RCC warehouse takes 28–42 weeks. Approval filing alone accounts for 6–16 weeks depending on authority. PEB portal frame erection follows a fabrication lead time of typically six to eight weeks from order, which should be built into the programme.
Why is a per-sqft rate misleading for industrial projects?
Because the specification premium — industrial flooring, dock equipment, fire suppression and crane infrastructure — represents 30–50% of total project cost and is routinely excluded from contractor per-sqft quotes. A full itemised BOQ covering all four is the only basis for honest comparison between two industrial builders.
What matters most in loading dock design?
Dock sill height at 1,200mm for standard trucks or 1,100mm for low-floor trailers; truck apron depth of minimum 35m for articulated trailer turning; dock leveller specification; dock seal or shelter for rain protection; and dock drainage to prevent interior flooding. All are architectural decisions made before structural drawings, since apron depth constrains the building footprint.
Can I add an overhead crane later?
Retrofitting is expensive. An EOT crane requires gantry girder structural design, crane rail, runway beam, electrical supply and controls — and crane capacity and span must be specified before structural design begins. If there is any realistic prospect of crane installation, provide for it in the original frame design.
Site Evaluation Through Handover, PEB or RCC
Structural design, COA-registered architectural services, approval support across CMDA, DTCP, SIPCOT, fire NOC and factory licence, industrial flooring, dock design and MEP.
Three decisions, made before the drawing
Warehouse construction done correctly begins with the structural system, the floor loading specification, and the approval authority for your specific site — all settled before any design work starts. Industrial shed construction projects that skip them do not avoid them; they meet them later, as change orders. Contact Buildiyo for a free site assessment and warehouse construction quotation.