How to size a Trench Shield

A guide on how to determine the size of trench shield to ensure maximum safety.

*see depth certification chart

Soil Conditions*

Type A (25#)_________________

Type B (45#)_________________

Type C (60#)_________________

Hydostatic_________________

*see depth certification chart 

Outside Pipe Diameter_________________

(Shield must be 2' to 4' longer than the pipe)

Pipe Length_________________

(Shield must be 2' to 4' longer than the pipe.)

Bucket Width_________________

(Inside shield: 12" less than shield.)

Machine Lift Capacity_________________

(1.5 times shield weight at 20' radius.)