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Author Question: All drainage pipes should be surrounded by an envelope of ____________________. Fill in the ... (Read 8 times)

WhattoUnderstand

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on: Jul 21, 2018
All drainage pipes should be surrounded by an envelope of ___________________ _.
 
  Fill in the blank(s) with correct word

Question 2

Drainage pipe is placed in the soil with the slits facing ___________________ _.
 
  Fill in the blank(s) with correct word


dudman123

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Reply #1 on: Jul 21, 2018
Answer to Question 1

gravel

Answer to Question 2

down


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