For the Registration of Plumbers, and relating to Plans and Specifications for Plumbing and Drainage, Adopted by the Board of Health of the City of New York, in accordance with Chapter 450, Laws of 1881.

I

The Registration of Plumbers.

Rule 1. Every plumber engaged in business in the city of New York shall appear in person at the Health Department, No. 301 Mott Street, and register his name and address, pursuant to the provisions of Chapter 450, Laws of 1881, upon the forms prescribed by the Health Department.

Rule 2. It shall be the duty of every plumber to give immediate notice of any change in residence or place of business, for the correction of the register.

Rule 3. The list of registered plumbers shall be published in January of each year.

II

Of Plumbing.

The law requires that the plumbing and drainage of all buildings, public and private, shall be executed in accordance with plans and specifications previously approved in writing by the Board of Health; and that suitable drawings and descriptions of the said plumbing and drainage shall, in each case, be submitted and placed on file in the Health Department.

Drawings and descriptions of the plumbing and drainage of buildings erected prior to the passage of the act may be placed on file in the Health Department.

Blank specifications for plumbing and drainage will be furnished to architects and others on application at this office.

As the law requires that the plumbing and drainage be executed according to a plan approved by the Board of Health, no part of the work shall be covered or concealed in any way until after it has been examined by an inspector of the Board of Health, and notice must be sent to the Board when the work is sufficiently advanced for such inspection.

III

Plan of Drainage and Plumbing Approved by the Boat d of Health.

The following plan of construction has been approved by the Board of Health. When the work is completed, and before it is covered from view, the Board must be notified that it may send an inspector:

1. All materials must be of good quality and free from defects; the work must be executed in a thorough and workmanlike manner.

2. The arrangement of soil and waste pipes must be as direct as possible.

3. The drain, soil, and waste pipes, and the traps, must, if practicable, be exposed to view for ready inspection at all times, and for convenience in repairing. When necessarily placed within partitions or in recesses in walls, soil and waste pipes must be covered with wood-work so fastened with screws as to be readily removed. In no case shall they be absolutely inaccessible.

4. It is recommended to place the soil and other vertical pipes in a special shaft, between or adjacent to the water-closet and the bath-room, and serving as a ventilating-shaft for them. This shaft should be at least two and a half feet square. It should extend from the cellar through the roof, and should be covered by a louvered skylight. It should be accessible at every story, and should have a very open but strong grating at each floor to stand upon.

Shafts not less than three square feet in area are required in tenement-houses, to ventilate interior water-closets.

5. Every house or building must be separately and independently connected with the street-sewer.

6. Where the ground is made or filled in, the house-sewer - that is to say, the portion of the drain extending from the public sewer to the front wall - must be of cast-iron, with the joints properly calked with lead.

7. Where the soil consists of a natural bed of loam, sand, or rock, the house-sewer may be of hard, salt-glazed, and cylindrical earthenware pipe, laid on a smooth bottom free from all projections of rock, and with the soil well rammed to prevent any settling of the pipe. Each section must be wetted before applying the cement, and the space between each hub and the small end of the next section must be completely and uniformly filled with the best hydraulic cement. Care must be taken to prevent any cement being forced into the drain to become an obstruction. No tempered-up cement shall be used. A straight-edge must be used inside the pipe, and the different sections must be laid in perfect line on the bottom and sides.

8. Where there is no sewer in the street, and it is necessary to construct a private sewer to connect with a sewer on an adjacent street or avenue, it must be laid under the roadway of the street on which the houses front, and not through the yards or under the houses.

9. The house-drain must be of iron, with a fall of at least one-quarter inch to the foot, if possible, and not more than one inch to the foot.

10. Where water-closets or a school-sink discharge into it, the drain must be at least four inches in diameter.

11. It must be hung on the cellar wall or ceiling, unless this is impracticable, in which case it must be laid in a trench cut at a uniform grade, walled up on the sides with brick laid in hydraulic cement, and provided with movable covers, and with a hydraulic concrete base of four inches in thickness on which the pipe is to rest.

12. It must be laid in a straight line, if possible. All changes in direction must be made with curved pipes, and all connections with Y-branch pipes and one-eighth bends.

13. Any house-drain or house-sewer put in and covered without due notice to the Health Department must be uncovered for inspection at the direction of the inspector.

14. A running or half-s trap must be placed on the house-drain at an accessible point. near the front of the house. This trap must be furnished with a hand-hole for convenience in cleaning, the cover of which must be properly fitted and made gas and air tight with some proper cement.

15. There must be an inlet for fresh air entering the drain just inside the trap, of at least four inches in diameter, leading to the outer air and opening at or near the street curb, or at a convenient place not less than four feet from the nearest window. No cold-air box for a furnace shall be so placed that it can by any possibility draw air from this inlet-pipe. The inlet-pipe should never be carried up to the roof inside or outside the house.