Preparing membrane for grouting. Bitumenised felt laid first
KINAL
Polythene layer used to prevent loss of grout is sealed with adhesive strip
Care is taken to seal the polythene around pile caps
The polythene is sandwiched for protection
The screened gravel is laid as the porous layer to be grouted
62
The gravel is sealed with stiff mortar before concrete is cast. Chicken wire is used to hold gravel on sloping surfaces
Far East Architect & Builder July, 1967
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