?Cut two lengths of 4” off a 1½ “diameter PVC water pipe and attach each to a 1½ “ diameter PVC elbow
joints and fix a length of pipe to the other side of each elbow bend. The 4” length of pipes must be
turned upwards and placed close to the centre within the square with the longer lengths placed over the
layer of bricks on one side of the bricked square and firmly supported beneath. One pipe is a draw-off
pipe that has a tap at its end. The other pipe is the wash-out pipe that has to be placed on a side
different to the draw-off pipe. It is possible to use one pipe to serve as outlet and flush out. If so, the 4”
upturned pipe must be removable (not fixed with gum).
?Within the area of the border of bricks lay 1:2:4 concrete mix to a depth of 2 ½ “. Ensure that the PVC
pipes are firmly embedded.
?Mark off a circle 2'- 4” radius (4'- 8” diameter) centrally on the prepared base.
6- Place draw-off pipes
7- Place concrete
8- Mark off 2’- 4” circle
?Cut four (04) 4'x 2' lengths of chicken mesh and place two (02) lengths adjacent to each the base and
place the other two lengths adjacent to each other in the opposite direction of the chicken mesh
beneath. Bind the panels of mesh together with binding wire. Place the double layered mesh on the
prepared base. Cut holes in the mesh to allow the upturned PVC pipes to penetrate.
9- Place 2 layers chickens mesh
10- Cut mesh around pipes
11- Place PVC strip at pipes
?Cement a single row of kiln dried clay bricks around the outer side of the marked circle.
?Cut a piece of PVC sheet to place around the protruding PVC pipes and use a heated rod to create two
holes in the PVC to fit around the upturned pipes and press the PVC sheet firmly down on the chicken
mesh.
?Mark off a circle 4' 0” diameter centrally within the 4' – 8” diameter circle on the base and place ten
(10) nos. ¼” dia. 2 ½ “ steel bolts (head down) through the chicken mesh within the perimeter of the 2'
diameter circle. Make sure that the steel bolts are placed equidistant from each other and pour 1½“
layer of concrete 1:2:4 mix on the layers of chicken mesh. Make sure that the threaded ends of the
embedded bolts are not covered with concrete.
?Smoothe the surface of the concrete.
?Allow the concrete to cure for one (01) day.
?Remove the row of brick after the concrete is cured
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