Scaffold collapse is one of the top 3 fatality causes on Indian construction sites. DGFASLI + state Labour Commissioner data: ~40-60 reported fatalities per year from scaffold collapse / falls from scaffold; actual much higher (under-reported). Scaffolds for high-rise (above G+15) and unconventional structures (cooling towers, chimneys, bridges, industrial plants) carry the highest risk.

The Scaffold Method Statement (SMS) is the engineered, written, approved procedure for erecting and dismantling scaffolds. It transforms scaffold work from informal crew-led practice into engineered safety. Under IS 3696:2016 (Safety of Scaffolds), the SMS is the foundation document for: - Pre-work authorisation — work cannot start without approved SMS - Worker training — toolbox talks based on SMS - Inspection / audit — actual practice compared to SMS - Accident investigation — was actual deviating from SMS? - Statutory compliance — DGFASLI inspection looks for SMS

Without SMS: - Each crew erects per personal experience; quality varies - No standard for adequate bracing, ties, base plates - No engineering check for load capacity - Fall protection inconsistent - Inspection criteria unclear - After a fall: "who said this was safe?" — no documented answer

Standard SMS structure (typically 8-15 pages):

Section 1 — Scope: - Project + location + tower / area - Scaffold type: tube + coupler / system (cup-lock / kwik-stage) / suspended / cantilever / hanging - Maximum height + length + planned configuration - Duration of use + dismantling date - Number of working platforms (single / double / multi) - Service load category: light (1.5 kPa) / medium (3 kPa) / heavy (4.5 kPa) / special (engineered)

Section 2 — Reference + standards: - IS 3696:2016 (Code of Practice) - IS 4014 Parts 1-2 (steel tubular scaffold) - Project HSE Plan - Manufacturer's manuals (for system scaffolds)

Section 3 — Design check: - Engineering calculations (for non-standard heights / configurations) - Load calculations (workers + materials + impact) - Base bearing capacity (sole plates / mudsills sized for ground) - Tying frequency to building (typically every 4 m vertical + 6 m horizontal) - Bracing pattern (every alternate bay + horizontal at every 4 m) - Drawings + sketches - Designer's qualification

Section 4 — Materials list: - Steel tubes (medium-class B per IS 1161, OD 48.3 mm) - Couplers (right-angle, swivel, sleeve, putlog) per IS 2750 - Boards (timber 50 mm thick / steel decks 38 mm) - Toe boards (150 mm high min) - Guard rails (top 1100 mm, mid 550 mm) - Base plates / sole plates - Ladders + access platforms - Safety nets, harnesses, lifelines

Section 5 — Erection sequence: - Step-by-step from ground up - Each step's safety check - Tying-to-building sequence - Platform installation sequence - Access (ladder / stair-tower) - Critical checks per stage (vertical plumb, joint tightness, ties) - Hold points before next stage

Section 6 — Dismantling sequence: - Top-down, reverse of erection - Load control (no free-fall of components) - Material storage at each level - Final ground-level break-down

Section 7 — Safety measures: - PPE specification per task (full-body harness, helmets, gloves, safety shoes) - Hazard analysis (fall / dropping / impact / electrocution / weather) - Restricted zones during erection / dismantling - Permit-to-work integration - Emergency response (worker injury, scaffold collapse, fire) - Exclusion of unauthorised entry

Section 8 — Team + responsibilities: - Scaffold supervisor (qualified per DGFASLI) - Foreman + workers (trained) - Safety officer - QC inspector - Site engineer (oversight) - Each person's qualification + experience

Section 9 — Inspection regime: - Pre-use inspection (every shift) - Weekly inspection (recorded) - Inspection after exceptional event (storm, accident) - Tag system (Green / Yellow / Red) - Inspector certification

Section 10 — Sign-off: - Prepared by + qualifications - Reviewed by safety officer - Approved by project manager + client / PMC HSE

1. Generic SMS used for unique scaffold — copy of standard SMS without project-specific calcs; doesn't address actual height / loading / ground conditions.

2. No engineering design for tall scaffold — > 30 m heights need engineering design; SMS sometimes treats it as standard.

3. Ties to building inadequate — SMS says ties every 6 m but actual spacing 12 m; scaffold over-loads couplers.

4. Wind load not considered — coastal / cyclone-prone sites need additional bracing + tie frequency; SMS doesn't differentiate.

5. Base support undefined — "sole plates" mentioned but no soil bearing check; settles + scaffold goes out of plumb.

6. Used coupler reuse without inspection — SMS doesn't mandate per-use coupler check; corroded / damaged couplers reused.

7. No competent scaffolder requirement — anyone can erect; not skilled labour; quality varies.

8. Boards not specified — SMS says "timber boards" but no thickness / grade / inspection criteria; cracked / weak boards used.

9. Access ladders missed — workers climb scaffold members; high fall risk.

10. Toe boards not provided — material falls from platform onto workers below; head injury / fatality.

11. No hold-points — SMS shows erection sequence but no QC inspection before next stage; defects accumulate.

12. Dismantling treated casually — "reverse of erection" with no detail; actually highest-risk activity (loaded scaffold being unloaded).

13. No tag system — single visible tag at scaffold entry; workers don't know if scaffold inspected for current use.

14. SMS not communicated to workers — document filed in office; toolbox talks generic; workers don't know SMS exists.

15. Modifications without re-approval — site engineer asks for changes; supervisor modifies on-the-fly; SMS not updated; unauthorised modification.

Companion formats: - Scaffold Pre-Use Checklist (QC-SCF-CHK-004) — daily inspection - Scaffold Inspection Register (QC-SCF-REG-001) - Scaffold Load Test (QC-SCF-TST-001) — for special scaffolds - Near-Miss Register (PMC-SAF-REG-001) — for scaffold incidents - Accident Register (PMC-SAF-REG-002) - Permit-to-Work System — height work permit - PPE Issue Register — harness / lifeline tracking

Codes + standards: - IS 3696 Part 1:2016 — Code of Practice for Safety of Scaffolds — Part 1: Common Hazards + Precautions - IS 3696 Part 2:1991 — Performance Requirements for Safety Nets - IS 4014 Part 1:1967 — Steel Tubular Scaffolding — Definitions + Materials - IS 4014 Part 2:1967 — Steel Tubular Scaffolding — Safety Regulations - IS 2750:1964 — Steel Scaffoldings (Couplers) - IS 1161:2014 — Steel Tubes for Structural Purposes - NBC 2016 Part 7 Section 1 — Construction Practices + Safety - BS EN 12810 + 12811 — European scaffold standard (often referenced in international projects) - OSHA 29 CFR 1926 Subpart L — US OSHA scaffold standards (referenced for tier-1 contractors) - DGFASLI Model Rules + Code on Occupational Safety, Health + Working Conditions 2020 - BOCW Act 1996 — construction worker safety