ORDINANCE No. 24 OF 1887.
Public Health.
6. House-drains shall be firmly bedded in selected material free from large stones and well rammed into place.
7. All stoneware pipes shall be well glazed and free from cracks and flaws and shall have a thickness of not less than one twelfth of their diameter.
8. Disconnecting chambers shall be red brick manholes fitted with stoneware traps and ventilating grates of iron or stone.
9. Lime mortar, used for the building of manholes shall be composed of three parts of sand or red earth and one part of good lime.
10. Lime concrete used for encasing new drains shall be composed of four parts of good sound clean stone, broken to half inch cubes, two parts of red earth and one part of lime thoroughly well mixed and well rammed into place.
11. Cement mortar used for the jointing of pipes or any other work shall be mixed in the proportions of three parts of clean sharp sand and one part of good Portland cement and used fresh.
12. No main house-drain shall be less than six inches in clear internal diameter.
13. Subject to the limitation mentioned in the preceding bye-law, no main house-drain shall be larger than is necessary in the opinion of the Board to carry off the sewage of the dwelling, or the sewage with the rain-water, which, under conditions hereinafter specified in bye-laws Nos. 38, 39, 40 and 41 shall be admitted to the house-drain.
14. Every house-drain shall have the maximum fall throughout its length, that the relative levels of the public sewer and of the most remote inlet, will admit of.
Provided always
(a) That the maximum available fall does not exceed one in thirty (or 4 inches in 10 feet.) If it does, then the part of the drain, more remote from the public sewer, may be laid with a fall of one in thirty; and the remainder, with such greater fall as may be necessary to connect with the public sewer.
(b) That the excavation, necessary to obtain the maximum available fall, is not of such a nature as to endanger the stability of the adjoining or neighbouring property.
In these and similar cases the gradient may be reduced subject to the approval of the Board.
15. Whenever a reduction of fall, (below the standard grade 1 in 30) is necessary or permissible, it shall, wherever practicable, be made in the portion of the drain, nearest to the outlet, rather than in the part nearest to the inlet and in the main trunk of the drain, rather than in the branches.
NOTE. The available fall in a house-drain, 100 feet long, is 2' 6" or one in forty. It will be better to make the first thirty feet from the inlet, with a fall of 1 foot, or 1 in 30; and the remaining length of 70 feet with a fall of 1 in 46.66, than to give a uniform fall throughout.
2211
Materials, stoneware pipes.
Materials, disconnecting chambers.
Materials, lime mortar.
Materials, lime concrete.
Materials, cement mortar.
Size of drains.
Size of drains.
Fall to drains.
Fall to drains.
ORDINANCE No. 24 OF 1887.
Public Health.
6. House-drains shall be firmly bedded in selected material free from large stones and well rammed into place.
7. All stoneware pipes shall be well glazed and free from cracks and flaws and shall have a thickness of not less than one twelfth of their diameter.
8. Disconnecting chambers shall be red brick manholes fitted with stoneware traps and ventilating grates of iron or stone.
9. Lime mortar, used for the building of manholes shall be composed of three parts of sand or red earth and one part of good lime.
10. Lime concrete used for encasing new drains shall be composed of four parts of good sound clean stone, broken to half inch cubes, two parts of red earth and one part of lime thoroughly well mixed and well rammed into place.
11. Cement mortar used for the jointing of pipes or any other work shall be mixed in the proportions of three parts of clean sharp sand and one part of good Portland cement and used fresh.
12. No main house-drain shall be less than six inches in clear internal diameter.
13. Subject to the limitation mentioned in the preceding bye-law, no main house- drain shall be larger than is necessary in the opinion of the Board to carry off the sewage of the dwelling, or the sewage with the rain-water, which, under conditions hereinafter specified in bye-laws Nos. 38, 39, 40 and 41 shall be admitted to the house- drain.
14. Every house-drain shall have the maximum fall throughout its length, that the relative levels of the public sewer and of the most remote inlet, will admit of.
Provided always
(a) That the maximum available fall does not exceed one in thirty (or 4 inches in 10 feet.) If it does, then the part of the drain, more remote from the public sewer, may be laid with a fall of one in thirty; and the remainder, with such greater fall as may be necessary to connect with the public sewer.
(b) That the excavation, necessary to obtain the maximum available fall, is not of such a nature as to endanger the stability of the adjoining or neighbouring property.
In these and similar cases the gradient may be reduced subject to the approval of
the Board.
15. Whenever a reduction of fall, (below the standard grade 1 in 30) is necessary or permissible, it shall, wherever practicable, be made in the portion of the drain, nearest to the outlet, rather than in the part nearest to the inlet and in the main trunk of the drain, rather than in the branches.
NOTE. The available fall in a house-drain, 100 feet long, is 2' 6" or one in forty. It will be better to make the first thirty feet from the inlet, with a fall of 1 foot, or 1 in 30; and the remaining length of 70 feet with a fall of 1 in 46-66, than to give an uriform fall throughout.
2211
Materials, stone- ware pipes.
Materials, disconnecting chambers.
Materials, lime mortar.
Materials, limo concrete.
Materials, cement mortar.
Size of drains.
Size of drains.
Fall to drains.
Fall to drains...
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