Safe loads for clear solid ice are indicated below:
|Thickness of Ice||Load or Activity|
|< 1 3/4||< 4.5||STAY OFF|
|1 3/4||4.5||One person cross county skiing|
|2||5||One person on foot or skates|
|4||7.5||Snowmobile or smaller ATV, groups of people walking in a single line|
|7||17.5||A small car|
|8||20||A 2 1/2 tons truck|
|9||22.5||A 3 1/2 tons truck|
|10||25||A 7 - 8 tons truck|
Note that ice strength is influenced by many factors
- age - newer black ice is stronger than old milky
- distance to shore - ice close to shore is weaker than ice farther out
- river outlets and inlets - ice close to outlets and inlets is weaker
- obstructions like rocks, trees and plants
- water currents
- cover of snow
This information must only be used as a general guide - KEEP OFF the ice if you are not absolutely sure.
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.
Properties like Youngs modulus, tensile strength, compressive strength and fracture of toughness for ice.
Thermal and thermodynamic properties of ice like density, thermal conductivity and specific heat at temperatures from 0 to -100 oC.
Ice coat weigth on horizontal pipe lines.