Concrete & Waterproofing Safety Protocols
Essential PPE and Excavation Safety Guidelines
HEALTH & SAFETY WARNING
Wet concrete can cause severe chemical burns within minutes. Excavation collapse can be fatal in seconds. Never work without proper PPE and safety protocols.
Concrete work and waterproofing excavation present unique safety hazards that require strict protocols and proper protective equipment. This comprehensive guide covers critical safety procedures from chemical burn prevention to excavation collapse avoidance, ensuring worker safety on every project.
Part 1: Concrete Work Safety
Understanding Concrete Chemical Hazards
Why Concrete Burns Skin
- • pH level of 12-13 (highly alkaline)
- • Contains calcium hydroxide (caustic)
- • Burns develop over hours
- • Damage continues even after washing
- • Can cause third-degree burns
- • Permanent scarring possible
Burn Progression
No visible symptoms, damage occurring
Redness, itching, pain develops
Blisters, severe burns, tissue damage
⚠️ CRITICAL: Concrete burns often don't hurt immediately. By the time you feel pain, severe damage has occurred.
Required PPE for Concrete Work
Hand Protection
- • Inner: Nitrile/rubber gloves
- • Outer: Work gloves
- • Change when wet
Replace immediately if torn. Never work barehanded.
Eye Protection
- • Safety glasses minimum
- • Face shield for pouring
- • Side protection required
Keep 2 pairs on site. Have eyewash station ready.
Skin Protection
- • Long sleeves/pants
- • Rubber boots
- • Tuck pants into boots
No exposed skin. Change contaminated clothing immediately.
Emergency Response: Concrete Contact
IMMEDIATE ACTION
Remove contaminated clothing and rinse affected area with cool water for 20 minutes minimum
NEUTRALIZE pH
Apply vinegar or citrus juice to neutralize alkalinity (keep on site)
CONTINUE FLUSHING
Rinse again with water for additional 20 minutes
SEEK MEDICAL ATTENTION
For any burns, blisters, or persistent pain - see doctor immediately
Eyewash Station Requirements
Mandatory Equipment
- ✓ Portable eyewash station (minimum 15 minutes flow)
- ✓ Located within 10 seconds walk
- ✓ Clearly marked with signs
- ✓ Weekly inspection and testing
- ✓ Temperature controlled (60-100°F)
Eye Flush Procedure
- 1. Guide victim to eyewash immediately
- 2. Hold eyelids open with fingers
- 3. Flush for full 15 minutes minimum
- 4. Roll eyes to flush all areas
- 5. Remove contact lenses if present
- 6. Seek medical attention after flushing
Part 2: Waterproofing Excavation Safety
Critical: Angle of Repose by Soil Type
| Soil Type | Angle of Repose | Slope Ratio | For 8 ft Deep | Stability |
|---|---|---|---|---|
| Type A (Clay) | 53° | 3/4:1 | 6 ft back | Most stable |
| Type B (Silt/Sandy Clay) | 45° | 1:1 | 8 ft back | Moderate |
| Type C (Sand/Gravel) | 34° | 1.5:1 | 12 ft back | Unstable |
| Wet/Saturated | 26° | 2:1 | 16 ft back | Very unstable |
⚠️ IMPORTANT: Always assume Type C (worst case) unless soil testing proves otherwise. Wet conditions automatically downgrade any soil type.
Excavation Safety Protocols
NEVER Excavate When:
- ✗ During active rainfall
- ✗ Rain forecast within 24 hours
- ✗ Soil is saturated/muddy
- ✗ Standing water present
- ✗ Freezing conditions
- ✗ Without utility locates
ALWAYS Do This:
- ✓ Inspect excavation every shift
- ✓ Check after any rainfall
- ✓ Keep spoil pile 2+ ft from edge
- ✓ Install ladder every 25 ft
- ✓ Use trench box if vertical
- ✓ Have rescue plan ready
When Reshoring is Required
Depth > 5 feet
Any excavation deeper than 5 feet requires engineered shoring or proper sloping
Near Foundations
Within 3 feet of existing foundations requires shoring regardless of depth
Unstable Soil
Type C soil or wet conditions require shoring at any depth over 3 feet
Shoring Options:
- • Hydraulic shores - Quick installation, adjustable
- • Trench boxes - Move with excavation progress
- • Sheet piling - For deep or wet excavations
- • Soldier piles - Permanent installations
CRITICAL: Utility Location Requirements
Call Before You Dig: 1-800-400-2255
Required Timeline:
- • Call minimum 5 business days before
- • Valid for 30 days from marking
- • Re-locate if marks fade/removed
- • Document locate ticket number
Utility Color Codes:
- Electric power lines
- Gas, oil, petroleum
- Communications, cable
- Water lines
- Sewer, storm drains
- Reclaimed water
⚠️ PENALTIES: Failure to call = fines up to $50,000 + full liability for damages
Part 3: Waterproofing Chemical Safety
Hazardous Materials in Waterproofing
Membrane/Coating Hazards
- •Solvent-based products:
Flammable, toxic vapors, skin irritant
- •Tar/Asphalt products:
Burn hazard (heated to 400°F), toxic fumes
- •Polyurethane coatings:
Isocyanate exposure, respiratory hazard
- •Epoxy systems:
Skin sensitizer, allergic reactions
Required PPE
- ✓ Chemical-resistant gloves (specific to product)
- ✓ Safety glasses with side shields
- ✓ Respirator (if vapors present)
- ✓ Chemical-resistant clothing
- ✓ Rubber boots (no leather)
- ✓ Face shield for spray application
Job Site Safety Equipment Checklist
Concrete Work
- Eyewash station (15-minute capacity)
- Safety glasses (2 pairs minimum)
- Rubber gloves (multiple sizes)
- Work gloves (outer layer)
- Rubber boots
- Vinegar/citrus (pH neutralizer)
- First aid kit with burn gel
- Clean water source
Excavation Work
- Utility locate confirmation
- Trench box/shoring equipment
- Ladders (every 25 feet)
- Barricades and warning tape
- Emergency rescue equipment
- Atmospheric monitor (confined space)
- Water pump (dewatering)
- Slope measuring tool
Daily Safety Briefing Requirements
Mandatory Daily Topics
Morning Briefing
- ✓ Weather conditions and forecast
- ✓ Specific hazards for today's work
- ✓ PPE requirements reminder
- ✓ Emergency procedures review
- ✓ Location of safety equipment
- ✓ Any injuries or near-misses
Documentation
- ✓ Date, time, and weather
- ✓ Topics covered
- ✓ Attendee signatures
- ✓ Hazards identified
- ✓ PPE inspection results
- ✓ Action items assigned
Remember: Every worker has the right and responsibility to stop unsafe work immediately.
Emergency Response Procedures
Cave-In Emergency
- 1. DO NOT enter excavation
- 2. Call 911 immediately
- 3. Remove other workers from area
- 4. Prevent further collapse
- 5. Do not attempt rescue without proper equipment
- 6. Keep victim talking if conscious
- 7. Document everything
Chemical Exposure
- 1. Remove from exposure immediately
- 2. Flush affected area with water
- 3. Remove contaminated clothing
- 4. Check SDS for specific treatment
- 5. Call Poison Control: 1-800-222-1222
- 6. Transport to medical facility
- 7. Bring SDS sheet with victim
Training & Certification Requirements
All Workers
- • WHMIS 2015
- • Working at Heights
- • First Aid/CPR
- • PPE usage
Excavation Workers
- • Trenching & Shoring
- • Soil Classification
- • Confined Space Entry
- • Locate Training
Supervisors
- • Competent Person
- • JHSC Certification
- • Incident Investigation
- • MOL Regulations
Committed to Zero Incidents
Our teams follow strict safety protocols with daily briefings and continuous monitoring