Grave Preparation

Consider:

• Potential impacts on an adjoining property, particularly concerning drainage or collapse

• Instability to adjoining or nearby structures

The type and condition of the soil, such as the moisture content and water table level

The location and proximity of any previously disturbed ground. (e.g. neighbouring graves), underground services at or near the location of the excavation (e.g. gas pipes), ground stability, and any anticipated ground vibration (e.g. from the mobile plant).

The expected ground pressures. (including the location of spoil pile, equipment to be used and anticipated number of people near the grave)

Location and proximity of adjacent structures such as monuments the size of the grave (depth/width/length).

Any space constraints. Assess intended site limitations. Check:

• Layout is suitable

• Overhead obstructions (including power lines)

• Sufficient delivery access

• Sufficient working room.

Ensure underground services identified and marked accurately for depth and position:

• Contact Dial Before You Dig

• Use an accredited cable locator contractor to test the area

• Contact relevant authorities/companies for ‘as constructed’ plans if necessary

• Hand excavate using a shovel to locate services and mark out before any trenching or Use extreme care when working near gas mains

• When using hand prodders to locate pipes, do not use hammers or other implements

Mark all exposed services with flags or devices that can be readily seen

Ensure all marked services continue to be visible for the duration of the work.

Ensure work is not conducted in close proximity to electrical power lines. Check for:

• Overhead power lines (including high and low voltage distribution conductors)

• Single wire earth return (SWER)

• Service cables to premises

• Communications cables

• Electrical transformers (mounted lower than cables)

Identify the maximum range of equipment and how close equipment or load can come to an asset (known as a design envelope). The following dimensions are taken from the closest point of an extended component of the machine, e.g. extended long reach boom

In general, for up to and including 132,000 volts:

• 3m above, either side and below power lines is No Go Zone

• Between 3-6.4m of power lines, a Spotter is required

• Further than 6.4m of power lines is an open area

• No work to be conducted within a 10m radius of the SWER transformer.

⚠ No work to be conducted within Minimum Clearance Zones without written permission from the power supplier.

Approach distances will vary based on the voltage level of the live electrical apparatus. Always contact your local power asset owner for information before commencing crane operations if unsure.