Fig. 13
c) Lining
Preparation of the mix: In volume, f'c:175 kg/cm2 is equivalent to mixing
one bag of cement, 2 wheelbarrows of sand and 3 wheelbarrows of
stones (each wheelbarrow = 1 cubic foot).
After these dry materials have been mixed and turned at least three
times, add a quantity of water, which in litres must not be more than half
the total weight of the cement (1 kg = 1 litre).
Then put mortar on the banks, compacting it with the ruler. The
hammered stakes must be removed before the final finish.
Next, sprinkle cement with fine sand 1:3 and use a pasting tool to give it
a polished and waterproof finish.
Once the banks are completed, follow the same procedure for the canal
bed.
When finishing the borders, make sure they are aligned, to which end a
ruler or rope should be used between one wooden frame and the next.
12