Now we know there are 525, 600 minutes 18500000 . . a- : .. ... , in a year, .ac. -y^r gOCT ... described under Levelling. When this is done the engineer can see what is the best gradient at which his sewer is to run, and the best MAIN DRAINAGE.

Title | : | A manual of civil engineering practice |

Author | : | F. Noel Taylor |

Publisher | : | - 1911 |

Continue