Trench Shoring Calculator

Calculate trench shoring specs instantly using OSHA tables — built for excavation crews and safety professionals.

On site and need OSHA-compliant shoring specs before your crew enters the trench? This calculator gives you the answer based on soil type, depth, and protection method — in seconds.

Select soil classification (Type A, B, or C), enter trench depth and width, and choose your shoring method. Get upright spacing, wale size, strut size, and sheeting requirements instantly.

WHAT IT CALCULATES:

Soil Classification:

• Type A, B, and C per OSHA standards
• Unit weight and lateral earth pressure coefficients
• Ka coefficient and maximum lateral pressure
• Submerged and layered soil conditions

Shoring Specifications:

• Timber shoring (Appendix D)
• Aluminum hydraulic shoring (Appendix C)
• Trench shields and trench boxes
• Sloping and benching angles

OSHA Requirements:

• Depth thresholds: 0-5 ft, 5-20 ft, and over 20 ft
• Protection method selection: sloping, benching, shoring, shielding
• Shield height, length, and maximum depth rating
• Tabulated data from OSHA Appendix C and D

KEY FEATURES:

• OSHA 29 CFR 1926 Subpart P built in
• Appendix A soil classification tables
• Lateral earth pressure calculations
• Trench depths from 5 ft through 20 ft
• Works completely offline
• No account or login required

Built for competent persons, safety officers, excavation contractors, and civil engineers who need fast OSHA shoring lookups on the job site.