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Installation Guide

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There are a variety of ways the Earth Auger can be installed into a new or existing structure. Typically, the system is installed as shown above with the cradle and horizontal tube located below the floor. (Installation examples are shown below.)

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The rectangular top of the cradle extends through the floor, so a hole in the floor must be cut as shown.

Tools needed for installation if wood

  • Screwdriver, wrench
  • Drill and bits (3mm to 40mm for drilling holes for screws, pipes, etc.)
  • Four bolts 6mm x 64mm long (length depends upon the thickness of the floor boards)
  • Saws (typically a handsaw, and hand power saws)

Tools needed for installation if concrete block

  • Typical masonry tools
  • Drill and bits (3mm to 40mm for drilling holes for screws, pipes, etc.)

Installation process


Required part


Secure Toilet to Wood Floor



Build support base for floor


This will depend upon (1) how big the building is to be and (2) available materials. Minimum size suggested is about 1.2m x 1.2m inside. Local carpenters should design this. The floor height is recommended to be at least 80cm above the ground surface, unless toilet is to be installed above the floor, or the collection container in a hole. (Picture 1 provided as example.)

Locate toilet under joist frame


Place temporary supporting blocks under horizontal tube, cutting pieces as necessary (while not sacrificing structural integrity). Cradle has four mounting tabs for bolting to the floor if desired.  (Picture 2 provided as example.)

Cut holes for hoses as necessary.

2.5cm ID hose

A hole > 3cm dia. may be required for hose that will attach to the nipple of the urine diverter piece. This hose will then attach to the subsurface irrigation system. Other holes will include those from the urinal (if used) and the sink. (Picture 3 provided as example.)

Alt 1. Secure cradle to the floor.

4 6mm dia. bolts

Place floorboards. Cut so cradle top above mounting tabs and pedal fits through the floor. Drill holes for bolts from each of the mounting tabs. Secure with bolts. (Pictures 4-5 provided as example.)

Alt 2. Secure cradle to the substructure joists

3mm dia. x 60mm long screws

Cradle can be secured directly to the substructure frame. First cut out a place for tab against floor joist. Secondly, a horizontal support piece can be secured to hold up other mounting tabs. Each tab should be secured with long screws. (Pictures 6 provided as example.)

Secure horizontal tube to end joist

Screws as necessary

Cut piece to fit underneath horizontal tube that will securely attach to end joist  (Picture 7 provided as example.)




Secure Toilet to Block Base



Build support base for floor


Concrete block can be used to build the base. The base should be built so that the floor is at least 80cm off the ground, unless toilet is to be installed above the floor, or the collection container in a hole. The inside dimensions should be at lease 1.2m x 1.2m. (If a urine collection system is used, there should be openings under the base for storage and access.) Local carpenters should design this.

Locate toilet inside the blocks

Cement blocks and mortar

Block-outs should be left for locating the toilet. The toilet is placed and mortared in place. Extreme care should be used so that mortar does not get into moving EA parts.

Place floor

2.5sm thick Wood or similar thin flooring

A relatively thin floor needs to be placed on top of the concrete blocks. This is due to the height of the toilet (a thick base will reduce toilet height.) The cradle mounting tabs can be bolted through this flooring as described above.




Irrigation system



Hose from urine diverter

2.5cm ID hose & clamp

This only needs to be as long as necessary to fit over the urine diverter nipple and into the PVC pipe. Hose should be secured to nipple with a hose clamp. (Picture 8 provided as example.)

Alt. 1: PVC drainage system

2.5 cm PVC pipe and fittings

This system takes the urine from the toilet, from the urinal and the water from the sink. It combines them all and subsurface irrigates the garden surrounding the toilet, buried about 15cm, typically using 2.5cm dia. PVC for all of it. The size of the drainfield and associated pipe will depend upon the number of user anticipated. It should not require more than 6m of pipes plus fittings. The number and type of fittings will depend upon the complexity of the connections but could be 1-3 tees, 1-3 90° bends, 1-3 45° bends, 1-2 end caps.

Alt. 2: Urine collection system

Hoses and collection container(s)

If a garden is not practical, then the urine can be collected from the toilet and the urinal, stored temporarily in a closed container, then taken to the field to be used as a fertilizer. This will simply require connecting hoses and one or two containers. The size of containers will be dependent upon number of users. Urine should not be stored for more than a day in the toilet area, as it rapidly decomposed and smells. Container size should be at least 4-10 L in size (again, dependent upon users).

Alt.3: PVC urine disposal system

2.5 cm PVC pipe and fittings

If there is little wash water to dilute the urine (it should be 8 water to 1 urine), then it might be better to dispose the urine underground. This is a system similar to Alt 1, but smaller and further underground (~30cm or greater).

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Picture 1

Picture 2

Picture 3

Picture 4

Picture 5

Picture 6

Picture 7

Picture 8

Housings for the EarthAuger can be made of a variety of materials, this one entirely from recycled material.

This housing was made from old barn wood and a recycled window. To reduce building materials, one wall is the outside of the main house.

This base is made from sun-dried concrete blocks

This superstructure is made from concrete blocks covered with lime.

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