Product Overview

Summary: This SOP sets out clear, practical protocols for planning and carrying out concreting works in hot Australian conditions. It helps construction businesses protect workers from heat-related illness, maintain concrete quality, and comply with WHS obligations when temperatures climb.

Hot weather significantly increases both safety risks for workers and quality risks for concrete. High ambient temperatures, strong winds and low humidity can accelerate setting times, increase evaporation, and place additional physical strain on concreting crews. This Hot Weather Concreting Protocols SOP provides a structured, WHS-aligned approach to planning, executing and monitoring concreting works during heat events, including heatwaves and days with elevated UV and humidity levels common across Australia.

The procedure guides your team through pre-start planning, environmental monitoring, worker heat-stress controls, and concrete handling techniques specific to hot weather. It clarifies when work must be modified or stopped, how to manage hydration and rest breaks, and how to adjust mix design, placement and curing methods to maintain structural integrity. By implementing this SOP, businesses can reduce the likelihood of heat stress, dehydration and fatigue-related incidents, while also minimising defects such as plastic shrinkage cracking, reduced strength, and poor surface finishes that can lead to costly rework and disputes.

Key Benefits

• Reduce the risk of heat stress, dehydration and fatigue-related incidents among concreting crews.
• Ensure consistent concrete quality and performance despite elevated temperatures and harsh site conditions.
• Demonstrate due diligence and compliance with WHS duties for managing environmental and thermal hazards.
• Standardise hot weather planning, decision-making thresholds and communication across projects and subcontractors.
• Minimise costly rework, delays and client disputes caused by hot weather–related concrete defects.

Who is this for?

• Site Supervisors
• Concrete Foremen
• Construction Project Managers
• WHS Managers and Advisors
• Concrete Pump Operators
• Formwork Supervisors
• Civil Engineers
• Small to Medium Construction Business Owners

Hazards Addressed

• Heat stress, heat exhaustion and heat stroke among workers
• Dehydration and electrolyte imbalance
• Fatigue leading to reduced concentration, errors and incidents
• Burns or skin damage from contact with hot surfaces, steel reinforcement and formwork
• Increased manual handling strain due to accelerated concrete setting and rushed work
• Slip, trip and fall hazards from hastily placed or poorly finished concrete surfaces
• Quality-related hazards such as plastic shrinkage cracking, reduced strength and delamination
• UV overexposure leading to sunburn and long-term skin cancer risk

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions (Hot Weather, Heat Stress, WBGT, etc.)
• 3.0 Roles and Responsibilities
• 4.0 Applicable Legislation, Standards and Guidance
• 5.0 Hot Weather Risk Assessment and Environmental Monitoring
• 6.0 Planning for Hot Weather Concreting (Scheduling and Resourcing)
• 7.0 Worker Health, Hydration and Heat Stress Controls
• 8.0 PPE and Sun Protection Requirements
• 9.0 Concrete Mix, Transport and Placement Protocols in Hot Weather
• 10.0 Finishing and Curing Methods for Hot Conditions
• 11.0 Work Modification, Suspension and Escalation Criteria
• 12.0 Communication, Training and Pre-Start Briefings
• 13.0 Emergency Response for Heat-Related Illness
• 14.0 Inspection, Quality Control and Documentation
• 15.0 Review, Audit and Continuous Improvement

Legislation & References

• Safe Work Australia – Managing the Work Environment and Facilities Code of Practice
• Safe Work Australia – Guide for Managing the Risks of Working in Heat
• Model Work Health and Safety Act 2011 (Cth)
• Model Work Health and Safety Regulations 2011 (Cth)
• AS 3600: Concrete Structures
• AS 1379: Specification and supply of concrete
• AS/NZS 4501: Occupational protective clothing
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 1801: Occupational protective helmets