This is a process called sand bedding usually applied during embedding pipes to secure slope and protection of pipe during back filling of earth fills. Also applies in laying reinforce concrete pipes for drainage system and pvc pipes for sewerage system
Particular Procedure of Saand-bedding
1. excavation and clearing of pipe line
2. securing right elevation and slope
3. applying sand bedding before pipe laying
4. laying of pipes
5. filling of sand to cover the pipes
6. back filling of soil to cover the whole pipe line
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