Safety code for the erection of Structural Steelwork

IS 7205: Scope Summary & Key Specifications

Scope:
IS 7205 covers safety procedures and guidelines for steel structural erection, particularly for bridge girders. It references Indian Railway standards (Serial No. B2-63) for erection and riveting.

Key Specifications:

• Emergency Jointing (Clause 6.1.5.3):
  In emergencies (e.g., flood risk before riveting completion), joints must be secured by:
  • Filling 40% of rivet holes with cylindrical drifts
  • Filling an equal number with fully tightened service bolts

Additional Notes:

• The standard emphasizes safe erection practices in steel structures.
• It is applicable mainly to bridge girder erection and related riveting operations.
• Contact BIS offices (e.g., Manak Bhavan, New Delhi) for full standard copies.

Quick Table: Emergency Jointing

For detailed design formulas or erection procedures, refer to IS 7205 full text or Indian Railway Standard B2-63.

IS 7205 - Safety Organization for Structural Steelwork Erection

IS 7205 focuses on safety during erection of structural steelwork but does not provide explicit formulas or tables under "Safety Organization." Instead, it emphasizes organizational and procedural safety measures.

Key Points on Safety Organization:

• Safety Responsibility: Clear assignment of safety duties to supervisors and workers.
• Safety Training: Regular training and awareness programs for all personnel.
• Safety Equipment: Mandatory use of PPE (helmets, gloves, harnesses).
• Site Safety Measures:
  • Barricading hazardous zones.
  • Safe access and egress routes.
  • Emergency response planning.
• Inspection & Maintenance: Regular checks of lifting equipment, scaffolding, and tools.
• Communication: Effective signaling and coordination during lifting and assembly.

Typical Safety Specifications (from general engineering practice):

flowchart TD
    A[Safety Organization] --> B[Assign Safety Roles]
    A --> C[Conduct Training]
    A --> D[Provide PPE]
    A --> E[Site Safety Measures]
    A --> F[Equipment Inspection]
    A --> G[Emergency Planning]

For detailed procedures, refer to IS 7205 full text and related safety standards like IS 4138 (Safety code for scaffolds) and IS 5216 (Safety code for lifting appliances).

IS 7205: Safety Code for Erection of Structural Steelwork — General Safety Requirements

Key Points from IS 7205:

• Scope: Safety during erection of structural steelwork to prevent accidents.
• Safety Organization: Must have a designated safety officer and clear responsibilities.
• Personal Protective Equipment (PPE): Helmets, gloves, safety belts, and boots mandatory.
• Access and Work Platforms: Must be stable, with guardrails and toe-boards.
• Lifting Operations: Use certified cranes and slings; follow rated load limits.
• Fall Protection: Safety nets or harnesses required when working at heights > 2 meters.
• Fire Safety: Fire extinguishers and emergency exits must be in place.

Typical Safety Parameters (from general practice):

Formula for Safety Factor in Lifting Gear:

[ \text{Safety Factor} = \frac{\text{Breaking Load}}{\text{Working Load}} \geq 5 ]

flowchart TD
    A[Safety Organization] --> B[Designated Safety Officer]
    A --> C[PPE Provision]
    A --> D[Access & Platforms]
    A --> E[Lifting Operations]
    A --> F[Fall Protection]
    A --> G[Fire Safety]

Summary: IS 7205 emphasizes a systematic safety approach—organization, PPE, safe access, controlled lifting, fall arrest systems, and fire precautions—to ensure accident-free steel erection.

IS 7205 - Compliance with Statutory Provisions

Key Points from Clause 4.1:

• Mandatory Compliance: All statutory provisions (local/state/federal laws) must be strictly followed in addition to IS 7205.
• The code supplements but does not override legal safety and construction regulations.

Typical Statutory Provisions to Consider:

• Building bylaws and local municipal regulations.
• Labour laws related to worker safety (e.g., The Factories Act).
• Environmental clearances and safety norms.
• Fire safety regulations.
• Workmen compensation and insurance requirements.

Safety Code for Erection of Structural Steelwork (General Highlights):

• Use of personal protective equipment (PPE).
• Safe scaffolding and access.
• Load handling and crane operation standards.
• Fall protection measures.
• Emergency procedures and first aid.

No specific formula or table in IS 7205 for statutory compliance; it is a mandatory legal adherence clause.

Summary Table: Compliance Hierarchy

flowchart LR
    A[Statutory Provisions] --> B[IS 7205 Compliance]
    B --> C[Safety Code for Erection]
    C --> D[Safe Structural Steelwork]

Conclusion: Always verify local laws first, then apply IS 7205 and safety codes for complete compliance.

IS 7205 primarily references compliance with statutory safety provisions for men during structural steel erection but does not provide explicit formulas or tables for safety of men.

Key Points on Safety of Men (from IS 7205 & general practice):

• Clause 4.1: Follow all applicable statutory safety laws in addition to this code.
• Use personal protective equipment (PPE): helmets, harnesses, gloves, boots.
• Ensure safe access and egress: ladders, scaffolds, guardrails.
• Implement fall protection systems: safety nets, lifelines.
• Maintain clear communication and supervision during erection.
• Conduct risk assessments and provide training.

Typical Safety Specifications (general engineering practice):

flowchart TD
    A[Start Erection Work] --> B{Safety Measures}
    B --> C[PPE Usage]
    B --> D[Fall Protection]
    B --> E[Safe Access]
    B --> F[Training & Supervision]
    C --> G[Helmets, Harnesses]
    D --> H[Safety Nets, Lifelines]
    E --> I[Ladders, Guardrails]
    F --> J[Risk Assessment]

Summary: IS 7205 mandates compliance with statutory safety laws for men during steel erection; practical safety relies on PPE, fall protection, safe access, and training.

IS 7205: Safety Code for Erection of Structural Steelwork focuses on minimizing hazards during steel structure erection. While the code emphasizes safety principles rather than detailed formulas, key points include:

Key Safety Specifications:

• Risk Assessment: Identify hazards before erection; plan safe methods.
• Load Handling: Use rated lifting equipment; verify load weights.
• Temporary Stability: Provide adequate bracing and anchorage during erection to prevent collapse.
• Personnel Safety: Use personal protective equipment (PPE), safety nets, and guardrails.
• Communication: Continuous coordination among workers and supervisors.

Important Considerations:

• Temporary Bracing Forces: Must resist wind and erection loads; typically, lateral forces up to 0.5 kN/m² wind pressure are considered.
• Safe Working Loads (SWL): Follow manufacturer's data for cranes, hoists, and slings.
• Erection Sequence: Follow planned sequences to maintain structural stability.

Typical Safety Checks Table (Indicative):

flowchart TD
    A[Planning & Risk Assessment] --> B[Equipment Inspection]
    B --> C[Safe Lifting & Handling]
    C --> D[Temporary Bracing & Stability]
    D --> E[Continuous Supervision & Communication]
    E --> F[Personnel Safety Measures]

Summary: IS 7205 mandates a holistic safety approach—equipment checks, temporary stability, PPE, and teamwork—to ensure safe steel erection. For detailed load calculations, refer to IS 800 and IS 875 (wind loads).

IS 7205 - Handling & Storage of Materials: Key Points & Specifications

1. Safe Loading & Unloading (Clause 5.5)

• Steel members must be secured to prevent shifting, sliding, overturning during transit.
• Provide safe sling placement; slings must match weight/type of steel.
• Avoid sharp edges on slings; use pipes cut longitudinally for protection.
• Equipment must have adequate reach and capacity.

2. Loading Platforms (Clause 5.24.9)

• Provide toeboards and limit stops for wheelbarrows.
• Materials must be loaded securely with no projections.

3. Small Material Handling (Clause 5.17.2)

• Use bolt baskets or containers with strong handles to hold small items (bolts, drift pins).
• Prevents rolling/falling objects, reducing accidents.

4. Ramps & Trestles (Clause 5.2)

• Check strength & capacity of ramps for trucks/cranes.
• Supports, footings, bracing must be adequate and safe.
• Use materials in good condition and follow safe design principles.

Practical Recommendations:

flowchart LR
    A[Steel Shipment] --> B[Inspection for Safe Loading]
    B --> C[Secure Placement of Steel]
    C --> D[Safe Slinging (No Sharp Edges)]
    D --> E[Loading on Platform with Toeboards]
    E --> F[Use Bolt Baskets for Small Items]
    F --> G[Unload with Checked Ramps/Trestles]

Summary: Always ensure secure, stable handling with proper equipment, safe sling use, and structurally sound ramps/platforms, minimizing hazards during material handling.

IS 7205: Use and Inspection of Lifting Equipment

Key Specifications & Guidelines

• Inspection Frequency (Clauses 5.24.6 & 6.1.1):

  • Periodic inspection of wire ropes, chains, slings, and lifting tackles is mandatory.
  • Inspections must check for wear, corrosion, deformation, and other defects.
  • Old tackles showing deterioration should be re-rated with reduced safe working load (SWL) and clearly marked.

• Safe Working Load (SWL) (Clause 5.25.1):

  • Use only tested and marked lifting tackles.
  • Never exceed the SWL specified by the manufacturer or as per testing.

Typical Inspection Checklist

• Check for broken wires in ropes.
• Inspect chain links for elongation or cracks.
• Examine slings for cuts, abrasions, or deformation.
• Verify markings and certificates of lifting gear.

Example: Reduction in SWL for Wire Rope (Indicative)

Summary Diagram

flowchart TD
    A[Start: Use of Lifting Equipment] --> B[Inspection by Person in Charge]
    B --> C{Condition OK?}
    C -- Yes --> D[Use Equipment within SWL]
    C -- No --> E[Mark Reduced SWL or Discard]
    E --> F[Retest or Replace Equipment]
    D --> G[Safe Lifting Operation]

Remember: Regular inspection and adherence to SWL are critical for safety and compliance with IS 7205.

Key Bracing and Guying Precautions per IS 7205

1. General Guidelines (Clause 6.0):

• Guy the first roof truss on each side before detaching hoisting ropes.
• After erecting subsequent trusses and purlins, install protective guides and wind bracings to resist sudden gales.
• Maintain bracing and guying until the structure is fully complete.
• Guy trusses and components immediately after erection to prevent instability.
• Avoid overloading temporary structures used for material storage.

2. Materials for Guying (Clause 5.23.2):

• Use wire ropes per IS: 2266-1970 or manila ropes per IS: 1084-1969.

3. Temporary Bracing (Clause 6.1.3):

• Provide temporary bracings to resist stresses from erection equipment or loads during erection.

4. Anchor Checks (Clause 5.4):

• Verify anchors for proper placement and ensure concrete weight prevents uplift and sliding.

Typical Guy Rope Strength Check Formula:

[ T = \frac{W \times H}{L \times \cos \theta} ]

Where:

• (T) = tension in guy rope
• (W) = lateral wind load or applied force
• (H) = height of attachment point
• (L) = length of guy rope
• (\theta) = angle of guy rope with horizontal

Summary Table: Guy Rope Material Properties (per IS standards)

flowchart LR
    A[Start Erection] --> B[Guy First Truss Both Sides]
    B --> C[Hoist Second Truss]
    C --> D[Install Protective Guides]
    D --> E[Install Wind Bracing]
    E --> F[Continue Erection & Guying]

IS 7205: Fire Safety Measures for Structural Steel Erection

Key Points from Clause 5.20:

• Fire Protection Procedure: Must be established before any flame cutting, burning, heating, forging, riveting, or similar operations.
• Worker Instructions: Prohibit throwing hot objects such as rivets or cigarette stubs.
• Fire Watch: Assign a trained person to watch for sparks or flames during hot work.
• Fire Extinguishers: Keep suitable extinguishers (e.g., CO2, foam) nearby.
• Clearance: Remove flammable materials within a safe radius (usually at least 10 m).
• Ventilation: Ensure adequate ventilation to prevent accumulation of flammable gases.

Recommended Fire Safety Checklist:

Internal Knowledge:

• Hot Work Permit System: Often used to control and document fire safety measures.
• Fire Resistance: Structural steel should be protected by fireproofing if required by design codes.

flowchart TD
    A[Start Hot Work] --> B{Fire Protection Procedure?}
    B -- Yes --> C[Assign Fire Watch]
    B -- No --> D[Stop Work]
    C --> E[Remove Flammable Materials]
    E --> F[Keep Fire Extinguishers Ready]
    F --> G[Conduct Hot Work Safely]
    G --> H[Monitor for 30 min post-work]
    H --> I[End]

Summary: IS 7205 emphasizes strict fire safety procedures, worker training, and fire watch during hot operations to prevent fire hazards on steel erection sites.

Welding and Gas Cutting Safety per IS 7205

• Training: Welders and gas cutters must be trained per IS: 818-1961 to understand safe welding practices.

• Precautions: Follow safety measures outlined in IS: 3016-1965 during welding and gas cutting to prevent accidents.

• Protective Equipment:

  • Gloves, safety boots, aprons, and hand shields are mandatory as per IS: 1179-1967.
  • Hand shield filter glass must comply with IS: 5983-1971, tailored to the worker’s eye sensitivity.

Key Safety Specifications Summary

Important Notes:

• Always inspect equipment before use.
• Ensure proper ventilation to avoid toxic fumes.
• Store gas cylinders upright and secure them properly.

flowchart LR
    A[Training per IS:818-1961] --> B[Use PPE per IS:1179-1967]
    B --> C[Follow precautions IS:3016-1965]
    C --> D[Use filter glass IS:5983-1971]
    D --> E[Safe Welding & Gas Cutting Operations]

This structured approach minimizes risks during welding and gas cutting operations.

IS 7205: Training and Competency of Personnel – Key Points

1. Training Requirements (Clause 3.1)

• Supervisory staff must be trained to enforce safety and identify safe/unsafe workmanship.
• Newly appointed workers should receive an induction course covering:
  • General safety rules
  • Demonstration of safe working methods
• Continuous monitoring of new workers' performance is essential.

2. Operators & Slinging Personnel (Clauses 5.24.1 & 5.24.2)

• Crane and lifting appliance operators must be trained in safe operation.
• Slinging workers should be trained in safe slinging techniques.
• Follow safety rules per the Indian Standard Code of Practice for Safe Use of Cranes.
• Use a strict hand signalling system:
  • Only one designated signaler at a time
  • No oral signals allowed

3. Statutory Compliance (Clause 4.1)

• All relevant statutory safety provisions must be complied with alongside IS 7205.

Summary Table: Training & Competency

flowchart TD
    A[New Worker Induction] --> B[Safe Working Methods Demo]
    B --> C[Performance Monitoring]
    D[Supervisory Staff Training] --> E[Safety Enforcement]
    F[Operators & Slinging Training] --> G[Safe Operation]
    G --> H[Use Hand Signals]
    H --> I[Only One Signal Person]

References:

• IS 7205 Clauses 3.1, 4.1, 5.24.1, 5.24.2
• Indian Standard Code of Practice for Safe Use of Cranes (under preparation)

IS 7205: Emergency Procedures for Structural Steel Erection

The code emphasizes safety awareness but does not provide explicit formulas or tables for emergency procedures. Key points include:

• Risk Awareness: All erection staff must be informed about fire risks.
• Emergency Contacts: Staff should know the nearest fire station's telephone number for prompt help.
• Preparedness: Procedures to quickly alert fire brigade or emergency services must be established.

Recommended Best Practices (Supplemented)

Simple Emergency Response Flow

flowchart TD
    A[Identify Emergency] --> B[Alert Supervisor]
    B --> C[Call Fire Brigade]
    C --> D[Evacuate Personnel]
    D --> E[Use Fire Extinguishers if Safe]
    E --> F[Wait for Emergency Services]

Summary: IS 7205 mandates awareness and quick communication for emergencies but relies on general safety practices for detailed procedures.

IS 7205: Inspection and Maintenance Key Points

• Clause 5.24.6:

  • Periodic inspection of wire ropes, chains, slings, lifting tackles is mandatory.
  • Old tackles must be marked with reduced safe working load (SWL) if deterioration occurs.

• Clause 5.24.7:

  • Trucks, jacks, lifts, cranes must be kept in good working condition through regular maintenance.

• Clause 6.1.1:

  • The person in charge must perform careful inspection before use to ensure all lifting gear is:
    • In good order
    • Fit for service
    • Adequate for required capacity

Typical Inspection Checklist (per IS 7205 & general practice):

Marking Reduced Lifting Capacity

If deterioration is found, reduce SWL as per:

[ \text{Reduced SWL} = \text{Original SWL} \times (1 - \text{Percentage deterioration}) ]

flowchart TD
    A[Start Inspection] --> B{Equipment Type?}
    B -->|Wire Rope| C[Check broken wires, corrosion]
    B -->|Chain| D[Check elongation, cracks]
    B -->|Sling| E[Check cuts, abrasions]
    B -->|Crane/Jacks| F[Check mechanical parts]
    C --> G{Defective?}
    D --> G
    E --> G
    F --> G
    G -->|Yes| H[Mark reduced SWL or Replace]
    G -->|No| I[Fit for service]
    H --> J[Record & Notify]
    I --> J

IS 7205: Appendices and References - Key Points

• Emergency Jointing (Clause 6.1.5.3):
  In urgent cases (e.g., flood risk before riveting completion), secure joints by:

  • Filling 40% of rivet holes with cylindrical drifts
  • Filling an equal number with fully tightened service bolts

• References & Related Standards:

  • Indian Railway Standard for erection and riveting of bridge girders (Serial No. B2-63)
  • Safety procedures in steel structural erection considered

• Contact & Support:

  • Headquarters: Manak Bhavan, New Delhi
  • Regional & Branch Offices across India (Delhi, Kolkata, Chennai, Mumbai, Bangalore, etc.)
  • BIS website: bis.org

Practical Summary for Emergency Jointing

If you need detailed tables or formulas for erection or lifting appliances, refer to Clause 5.24 and Indian Railway Standard B2-63 for riveting and erection practices.

flowchart TD
    A[Emergency Situation] --> B[Fill 40% rivet holes with cylindrical drifts]
    B --> C[Fill equal number of holes with service bolts]
    C --> D[Fully tighten bolts to secure joint]
    D --> E[Temporary secure joint until riveting completes]

This ensures structural safety during critical conditions before permanent riveting.