 | Colin Macfarquhar, George Gleig - 1797 - 434 Seiten
...The fmall narrow drains ihould be cut at the diftance of 1 6 or 1 8 feet from each other ; and ihould fall into the main drain at very acute angles, to prevent any ftoppage. At the point where they fall in, and eight or ten inches above it, they ihould be made О... | |
 | Alexander Hunter - 1803 - 590 Seiten
...may be finished : but before the earth is returned upon the stones, or bricks, it will be adviseable to throw in straw, rushes, or brush-wood, to increase...eight or ten inches above it, they should be made firm with brick or stone. In making the narrow drains I employ four labourers. The first man, with a common... | |
 | 1803 - 548 Seiten
...may be finished : but before the earth is returned upon the stones, or bricks, it will be adviseable to throw in straw, rushes, or brush-wood, to increase...small narrow drains should be cut at the distance «f sixteen or eighteen feet from each other, and should fall fall into the main drain at very acute... | |
 | 1823 - 876 Seiten
...they may be finished ; but before the earth is returned upon the stones or bricks, it is advisable to throw in straw, rushes, or brushwood, to increase...small narrow drains should be cut at the distance of 1 6 or 1 8 feet from each other, and should fall into the main drain at very acute angles, to prevent... | |
 | Colin MacKenzie - 1867 - 510 Seiten
...which they may be finished; but before the earth is returned upun the stones or bricks, it is advisable to throw in straw, rushes or brushwood, to increase...and should fall into the main drain at very acute angle.', to prevent any stoppage. At the point where they frill in, and eight or ten inches above it,... | |
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... to throw in straw, rushes, or brush-wood, to increase the freedom of the drain. The small narrow drains should be cut at the distance of sixteen or eighteen feet from each other, and should fall into the main drain at very acute angles, to prevent... 