: For drainage, maintain a downward slope of at least 1 inch for every 10 feet to ensure water flows. Standard Dimensions : Electrical : Typically 24 inches deep and 6-12 inches wide. Drainage : Usually 18 inches deep and 9-12 inches wide. Safety Rules (The 5-4-3-2-1 Rule) :
: Requires a ladder or ramp for exit, located within 25 feet of workers. trench
Whether you are installing a French drain or laying electrical cables , follow these steps: : For drainage, maintain a downward slope of
: Keep excavated soil ("spoils") at least 2 feet away from the trench edge to prevent cave-ins. Safety Rules (The 5-4-3-2-1 Rule) : : Requires
: Ladders must extend at least 3 feet above the top of the trench.
Watch these practical demonstrations to learn proper manual and mechanical trenching techniques: