Construction Occupational Safety And Health Simulations

A collection of interactive 3D visualizations and simulations to help you master concepts in construction occupational safety and health.

Introduction to Occupational Safety and Health - Theory & Concepts - Construction Osh Intro

Basic principles and historical background of OSH in the construction industry.

Total Recordable Incident Rate (TRIR) Analyzer

Calculate the TRIR based on recordable injuries and hours worked.

Recordable Injuries2

Total Hours Worked200000

Governing Equation

TRIR = \\frac{Injuries \\times 200,000}{Hours\\ Worked}

TRIR

2.00incidents per 100 FTE

OSH Legislation and Administration - Theory & Concepts - Construction Osh Legislation

Key laws, regulations, and the roles of government agencies like DOLE in enforcing safety standards.

OSHA Penalty Estimator

Estimate potential OSHA fines based on gravity and employer size.

Violation Gravity (1-10)5

Employer Size Discount (%)30

Governing Equation

Penalty = Base \\times (1 - Discount)

Estimated Penalty

5468.75USD

Safety Planning and Management - Theory & Concepts - Construction Osh Safety Planning

Developing and implementing comprehensive safety programs and job hazard analyses.

Risk Matrix Calculator

Calculate a risk score based on probability and severity.

Probability (1-5)3

Severity (1-5)4

Governing Equation

Risk = Probability \\times Severity

Risk Score

12/ 25

Personal Protective Equipment - Theory & Concepts - Construction Osh Ppe

Selection, use, and maintenance of PPE tailored for construction environments.

Effective NRR Calculator

Calculate the effective Noise Reduction Rating (NRR) for hearing protection.

Manufacturer NRR25

Ambient Noise (dBA)100

Governing Equation

Effective\\ NRR = \\frac{NRR - 7}{2}

Effective NRR

9.0dB

Worker Exposure

91.0dBA

Ergonomics and Manual Handling - Theory & Concepts - Construction Osh Ergonomics

Addressing musculoskeletal disorders and implementing ergonomic controls in construction tasks.

NIOSH Lifting Equation Simulator

Estimate the Recommended Weight Limit (RWL) based on horizontal and vertical multipliers.

Horizontal Multiplier (HM)0.8

Vertical Multiplier (VM)0.9

Governing Equation

RWL = LC \\times HM \\times VM

Recommended Weight Limit (RWL)

36.72lbs

Tool Safety: Hand and Power Tools - Theory & Concepts - Construction Osh Tool Safety

Safe selection, use, and maintenance of hand and power tools in construction.

Grinder Surface Speed Calculator

Calculate the surface speed of a grinding wheel based on its diameter and RPM.

Wheel RPM10000

Wheel Diameter (inches)4.5

Governing Equation

SFPM = \\frac{\\pi \\times D \\times RPM}{12}

Surface Speed

11780.97SFPM

Material Handling, Storage, Use, and Disposal - Theory & Concepts - Construction Osh Material Handling

Safe practices for moving, storing, using, and disposing of construction materials.

Sling Load Tension Calculator

Determine the tension on each leg of a sling based on load weight and sling angle.

Load Weight (lbs)5000

Sling Angle (degrees from horizontal)60

Governing Equation

Tension = \\frac{W}{n \\times \\sin(\\theta)}

Tension per Sling Leg

2886.75lbs

Scaffold Safety - Theory & Concepts - Construction Osh Scaffold Safety

Design, erection, use, and dismantling of scaffolds focusing on load capacities and fall prevention.

Scaffold Capacity Calculator

Calculate maximum intended load and required component strength.

Dead Load (lbs)500

Live Load (lbs)1000

Governing Equation

Capacity = (DL + LL) \\times 4

Max Intended Load

1500lbs

Required Component Capacity (Safety Factor 4)

6000lbs

Fall Protection - Theory & Concepts - Construction Osh Fall Protection

Systems and strategies to prevent falls from elevation, including guardrails and personal fall arrest systems.

Fall Clearance Calculator

Calculate the required fall clearance distance to safely arrest a fall.

Lanyard Length (ft)6

Deceleration Distance (ft)3.5

Worker Height (ft)6

Governing Equation

Clearance = LL + DD + WH + SF

Required Fall Clearance

18.50ft

Excavation and Trenching Safety - Theory & Concepts - Construction Osh Excavation Safety

Hazards associated with earthmoving operations and protective systems like shoring and shielding.

Trench Sloping Simulator

Calculate horizontal setback required for excavation based on depth and soil type slope ratio.

Trench Depth (ft)10

Slope Ratio (H:V, e.g. 1.5 for Type C)1.5

Governing Equation

Setback = Depth \\times SlopeRatio

Required Horizontal Setback

15.00ft

Electrical Safety in Construction - Theory & Concepts - Construction Osh Electrical Safety

Mitigating electrical hazards, proper grounding, and the use of GFCIs on construction sites.

Arc Flash Boundary Estimator

Estimate the safe approach boundary for electrical panels.

Voltage (V)480

Fault Current (kA)20

Governing Equation

Boundary \\approx \\frac{\\sqrt{V \\times I_{fault}}}{10}

Estimated Arc Flash Boundary

9.80inches

Heavy Equipment Safety - Theory & Concepts - Construction Osh Heavy Equipment

Safe operation, inspection, and maintenance of cranes, bulldozers, and other heavy machinery.

Crane Overturning Moment Calculator

Evaluate crane stability by comparing load moment and resisting moment.

Load Weight (tons)10

Load Radius (ft)40

Counterweight (tons)30

Counterweight Radius (ft)15

Governing Equation

FS = \\frac{M_{resisting}}{M_{load}}

Load Moment

400.00ton-ft

Resisting Moment

450.00ton-ft

Factor of Safety

1.13

Fire Protection and Prevention - Theory & Concepts - Construction Osh Fire Protection

Strategies for preventing and extinguishing fires, managing flammable materials, and emergency response.

Fire Extinguisher Coverage

Determine the required number of fire extinguishers based on area.

Floor Area (sq ft)10000

Max Area per Extinguisher (sq ft)3000

Governing Equation

Count = \\lceil \\frac{Area}{MaxCoverage} \\rceil

Required Extinguishers

4units

Confined Space Entry - Theory & Concepts - Construction Osh Confined Space

Identifying, preparing, and safely entering permit-required confined spaces.

Confined Space Ventilation Calculator

Calculate the time required to properly purge a confined space.

Space Volume (cu ft)2000

Blower Capacity (CFM)500

Required Air Changes5

Governing Equation

Time = \\frac{Volume}{CFM} \\times Changes

Ventilation Time

20.00minutes

Occupational Health Hazards - Theory & Concepts - Construction Osh Health Hazards

Mitigating long-term health risks from noise, silica, lead, and ergonomic strain.

Time-Weighted Average (TWA) Calculator

Calculate the TWA for chemical exposure.

Concentration 1 (ppm)50

Time 1 (hours)4

Concentration 2 (ppm)20

Time 2 (hours)4

Governing Equation

TWA = \\frac{C_1 T_1 + C_2 T_2}{8}

8-Hour TWA

35.00ppm

Emergency Response and First Aid - Theory & Concepts - Construction Osh Emergency Response

Site-specific emergency action plans, first aid provisions, and managing critical incidents.

Emergency Response Time Model

Estimate emergency response arrival time based on distance and speed.

Distance to Site (miles)10

Average Speed (mph)40

Dispatch Time (mins)3

Governing Equation

Time = \\left( \\frac{D}{V} \\times 60 \\right) + T_{prep}

Total Response Time

18.00minutes

Concrete and Masonry Construction Safety - Theory & Concepts - Construction Osh Concrete Masonry

Mitigating hazards during concrete pouring, formwork, rebar placement, and masonry construction.

Formwork Pressure Calculator

Calculate the lateral pressure of fresh concrete on formwork.

Concrete Density (pcf)150

Pour Height (ft)10

Governing Equation

P = w \\times h

Max Lateral Pressure

1500.00psf

Steel Erection Safety - Theory & Concepts - Construction Osh Steel Erection

Mitigating hazards during structural steel assembly, connecting, decking, and hoisting.

Anchor Bolt Tension Simulator

Calculate tension on anchor bolts due to wind load on a free-standing column.

Wind Force (lbs)1000

Column Height (ft)20

Anchor Bolt Spacing (ft)1.5

Governing Equation

Tension = \\frac{M}{d}

Overturning Moment

10000.00lb-ft

Tension per Bolt

3333.33lbs

Welding and Cutting Safety - Theory & Concepts - Construction Osh Welding Safety

Mitigating hazards from intense heat, ultraviolet radiation, toxic fumes, and electrocution during hot work.

Welding Ventilation Calculator

Determine minimum ventilation required based on number of active welders.

Number of Welders3

Required Rate (CFM/welder)2000

Governing Equation

CFM_{total} = Welders \\times Rate

Required Ventilation

6000.00CFM

Environmental Hazards and Temperature Extremes - Theory & Concepts - Construction Osh Temperature Extremes

Mitigating physiological stress from extreme heat, cold, biological agents, and severe weather.

Heat Index Calculator

Simplified Heat Index approximation for safety planning.

Temperature (°F)90

Relative Humidity (%)60

Governing Equation

HI \\approx T + (0.05 \\times RH)

Approx. Heat Index

93.0°F

Demolition Safety - Theory & Concepts - Construction Osh Demolition Safety

Hazards, planning, and safety protocols for the demolition of structures.

Debris Chute Velocity Model

Estimate terminal velocity of debris falling through a straight chute.

Drop Height (ft)50

Governing Equation

v = \\sqrt{2gh}

Impact Velocity

56.75ft/s

Traffic Control and Work Zone Safety - Theory & Concepts - Construction Osh Traffic Control

Principles of Temporary Traffic Control (TTC) and protecting workers from vehicular hazards.

Advance Warning Sign Spacing

Calculate minimum sign spacing distance based on speed.

Speed Limit (mph)45

Spacing Factor (ft/mph)10

Governing Equation

Distance = Speed \\times Factor

Min Sign Spacing

450.00ft