1) South examine concrete road surface cavity
2) Hole diameter approx. 30-60 mm (d) x 1.25-2.50 inches) in
perpendicular to a vertical or concrete road slabs and slabs of concrete road passes down through the floor cavity spaces happen
. 3 start the lime juice soft drink) (Sub Sealing) to stop the water according to the joints between concrete slabs
4) Further developing its water until full cavity beneath the cement slabs or overfill with water comes out
.From under the slabs full horizontal cracks, then decorate the hole punch and lime water, cracks, smooth uniform level
.
.
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