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IS 2750 : 1964Steel Scaffoldings - Specification

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BS EN 12811-1 · AS/NZS 1576.3 · ANSI/ASSP A10.8
CurrentFrequently UsedSpecificationBIMStructural Engineering · Scaffolding, Formwork and Construction Equipment
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OverviewValues5InternationalTablesFAQ3Related

IS 2750:1964 is the Indian Standard (BIS) for steel scaffoldings - specification. This standard specifies the requirements for steel tubes and fittings used in scaffolding, covering material properties, dimensional tolerances, and mechanical tests to ensure stability and safety of temporary structures during construction.

Specifies requirements for materials, dimensions, and construction of steel scaffoldings.

Overview

Status
Current
Usage level
Frequently Used
Domain
Structural Engineering — Scaffolding, Formwork and Construction Equipment
Type
Specification
International equivalents
BS EN 12811-1:2003 · BSI / CEN (United Kingdom / European Committee for Standardization)AS/NZS 1576.3:2015 · Standards Australia / Standards New ZealandANSI/ASSP A10.8-2019 · ANSI / ASSP (United States)
Typically used with
IS 1161IS 1977IS 3696
Also on InfraLens for IS 2750
5Key values2Tables3FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes
! Ensure scaffolding tubes conform to the exact 48.3 mm outer diameter for safe grip and compatibility with standard couplers.
! Wall thickness reduction due to wear and corrosion must be monitored periodically; heavily rusted or deformed tubes should be discarded immediately.
! This code acts as a material specification; for safe erection and dismantling practices, always refer to IS 3696 (Part 1).
Frequently referenced clauses
Cl. 3MaterialCl. 4TubesCl. 5FittingsCl. 6Tests for Fittings
Pulled from IS 2750:1964. Browse the full clause & table index below in Tables & Referenced Sections.
steeltubular steelfittings

International Equivalents

Similar International Standards
BS EN 12811-1:2003BSI / CEN (United Kingdom / European Committee for Standardization)
MediumCurrent
Temporary works equipment - Part 1: Scaffolds - Performance requirements and general design
Covers general design and performance requirements for scaffolds, but is performance-based unlike the prescriptive IS code.
BS 1139 SeriesBSI (United Kingdom)
HighWithdrawn
Metal Scaffolding (various parts for tubes, couplers, boards)
Historically, this was the basis for IS 2750, covering identical components like tubes and couplers in a prescriptive manner.
AS/NZS 1576.3:2015Standards Australia / Standards New Zealand
HighCurrent
Scaffolding, Part 3: Prefabricated and tube-and-coupler scaffolding
Directly addresses specifications for tube-and-coupler scaffolding, making it a strong modern counterpart.
ANSI/ASSP A10.8-2019ANSI / ASSP (United States)
LowCurrent
Scaffolding Safety Requirements
Focuses on safety requirements for design, erection, and use rather than detailed component manufacturing specifications.
Key Differences
≠IS 2750:1964 is a prescriptive standard, specifying exact dimensions and material types. Modern standards like BS EN 12811-1 are performance-based, defining load classes and required performance criteria, allowing for more innovation in design.
≠IS 2750 references outdated Indian steel grades (e.g., IS 226). International standards specify modern steel grades (e.g., S235, S355 per EN 10025) with more stringent chemical composition and mechanical property controls.
≠Modern standards (e.g., BS EN 12811-1) define multiple scaffold load classes (from 1 to 6, e.g., 0.75 kN/m² to 6.0 kN/m²) for different duties. IS 2750 has a simpler distinction between 'light' and 'heavy' duty scaffolds without such detailed classification.
≠The Indian standard exclusively covers traditional tube-and-fitting scaffolding. International standards have extensive sections or separate parts (e.g., BS EN 12810 series) for prefabricated system scaffolds (e.g., Cuplock, Kwikstage, Ringlock).
Key Similarities
≈The nominal outer diameter of the steel tube, 48.3 mm, is a near-universal dimension specified in IS 2750 and most international standards (e.g., BS EN 39), ensuring global interoperability of couplers and fittings.
≈All standards cover the same fundamental components for tube-and-fitting scaffolds: tubes (standards, ledgers), couplers (right-angle, swivel, sleeve), and base plates, with similar terminology.
≈The principle of incorporating a factor of safety into the design of components and the overall structure is a fundamental concept shared by IS 2750 and all modern international standards.
≈Requirements for protecting steel components against corrosion through methods like painting or hot-dip galvanizing are a common feature across the Indian and international standards.
Parameter Comparison
ParameterIS ValueInternationalSource
Tube Outer Diameter48.3 mm48.3 mmBS EN 39:2001
Standard Tube Wall Thickness4.0 mm (for Class 'B' heavy duty)4.0 mm (for Type 4 tube)BS EN 39:2001
Minimum Yield Strength of SteelApprox. 230 MPa (for steel as per IS 226)235 MPa (for S235 grade steel)BS EN 39:2001
Right-Angle Coupler Slip Resistance (Min. Load)5.9 kN (for Class A)≥9.1 kN (Characteristic value for Class B coupler)BS EN 74-1:2005
Putlog Coupler Slip Resistance (Min. Load)0.6 kN≥0.53 kN (Characteristic value)BS EN 74-1:2005
Base Plate Minimum Area150 mm x 150 mm (225 cm²)150 cm² (typically 150 mm x 150 mm)OSHA 1926.451(c)(2)(i)
⚠ Verify details from original standards before use

Key Values5

Quick Reference Values
Standard Outside Diameter (OD)48.3 mm
Standard Wall Thickness4.0 mm
Nominal Mass of Tube4.37 kg/m
Tolerance on Outside Diameter+0.4 mm, -0.8 mm
Maximum Permissible Deviation in Mass+10 percent, -8 percent

Tables & Referenced Sections

Key Tables
Table 1 - Tolerances on Dimensions
Table 2 - Tests for Fittings
Key Clauses
Clause 3 - Material
Clause 4 - Tubes
Clause 5 - Fittings
Clause 6 - Tests for Fittings

Related Resources on InfraLens

Cross-Referenced Codes
IS 1161:2014Steel Tubes for Structural Purposes - Specifi...
→
IS 1977:2018Structural Steel (Ordinary Quality)
→
IS 3696:1987Safety rules for scaffolds: Part 1 General re...
→

Frequently Asked Questions3

What is the standard outer diameter for steel scaffolding tubes?+
48.3 mm
What is the standard nominal wall thickness for standard steel tubes?+
4.0 mm
Which safety code should be read alongside this specification?+
IS 3696 Part 1 (Safety Code for Scaffolds and Ladders)

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