8/14/2019 Pizza 1

1/2

1. Introduction

2. Materials

3. Dimensionsion slab diameter .............. 1,8 m

ded slab diameter .............. ,6 m

side diameter .................... ,2 m approx

utside diameter .................. 1,4 m approx

ening, width ....................... 440 mm approxening height....................... 260 mm approx

4. Quantities of material used

se slab

kg bags of cement

elbarrows of concrete sand

elbarrows of 13,2 or 19 mm concrete stonemm stone produces a concrete that is easierce)

selay bricks (222 x 106 x 73 mm)

kg bag of cement

elbarrows of building sand

a pizza oven

8/14/2019 Pizza 1

2/2

6. Construction

se Slab

k out a 1,8 m diameter circle on the ground. This

be achieved by using two nails and string. Tie one

to the end of the string and tie the other nail so

it is 900 mm away from the first nail. It is best toa piece of string that does not stretch easily.

ure one of the nails in the centre and use the other

to scribe a circle around it.

vate the area within the circle to a depth of

m. Use a spirit level to ensure that the surface

vel. Compact the area well and wet the ground

re placing concrete.

t a 75 mm thick slab in the excavation using

ium trength concrete.

ab approximate material requirements:

kg bags of cement

elbarrows of concrete sand

eelbarrows of 13,2 or 19 mm concrete stonemm stone produces a concrete that is easierce)

in or bucket of convenient size for batching all the

redients.

owing mix proportions should be used:

pact the concrete well by tamping it all over using

oomstick, pick handle, a length of 38 x 38 mm

er or similar object. Finish the surface off using

aight edge and spirit level to ensure the top

ace is level and flat. After the surface has been

lled, leave the concrete to stand for a while until

urface water evaporates and the concrete stiffens

tly. Use a wood float to finish the surface.

concrete can now be covered with a plastic sheet

revent moisture loss and ensure effective curing.

p the slab covered for 7 days.

5. Tools

Mix proportions by volumeMedium

strengthconcrete

Cement

1

Sand

2,5

Stone

2