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Fire Protection & Structural Engineering

High-Piled Storage & Hazardous Materials 

Storage of commodities in your facility can require high-piled storage (HPS) or hazardous materials permits. Rigsbee Engineering can help you to safety store class I - IV commodities, plastics and hazardous materials. A HPS permit is generally required for storage above 6 feet high and when storage is above 500 square feet in area. Not sure if your storage practices are safe? We can evaluate your practices and provide guidance to avoid business interruption due to shut down from the fire department and help to prevent fires through sound operational practices. In addition to solving storage practices through fire protection engineering, we can design the rack systems and obtain building department approvals for the racking systems through our structural engineering discipline.


Hazardous material classification starts with a list of safety data sheets (SDS) from your facility, we will classify each material and evaluate the maximum allowable quantity (MAQ) your facility can store in its current condition and provide guidance for increasing the MAQ if necessary operationally.

High-Piled Storage

Hazardous Materials

Hazardous Materials

  • Rack Layout

  • Aisle Layout

  • High-Piled Combustible Storage

  • Occupancy Type and Classification

  • Draft Letter of Intent

  • Site Plans

  • Storage Height

  • Column Protection

  • Smoke and Heat Vents

  • Commodity Classification

  • Clearances

  • Commodity Classification

  • Hazardous Materials Management Plans

  • Corrosive Materials

  • Use and Occupancy Changes

  • Additional Storage and Processing Capacity

  • Aerosols

  • Combustible Dust

  • Combustible Fiber

  • Combustible Liquids

  • Cryogenic Flammable

  • Cryogenic Inert

  • Cryogenic Oxidizing

  • Explosives

  • Flammable Gas

  • Flammable Liquids

  • Flue Spacing

  • In-Rack Fire Sprinkler Design

  • Banded and Encapsulated

  • Maximum Pile Volume

  • Fire Department Access

  • Suppression and Detection

  • Commodity Class I – IV

  • High Hazard

  • Group A Plastics

  • Rubber Tires

  • Empty Pallets

  • Flammable Liquids

  • Compressed Gasses

  • Hazardous Materials Inventory Statements

  • Cryogenic Fluids

  • Explosives and Fireworks

  • Highly Toxic and Toxic materials

  • Liquefied Petroleum Gas

  • Flammable Solid

  • Inert Gas

  • Organic Peroxide

  • Oxidizer

  • Oxidizing Gas

  • Pyrophoric

  • Rubber

  • Unstable (Reactive)

  • Water Reactive

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