34 Pa. Code § 47.165 – Sanitary conveniences.

(a) Toilet rooms. Each foundry employing ten or more persons shall provide and maintain for the use of the employes, in a place conveniently accessible and connected with the foundry making it accessible without exposure to the open air, a toilet room of suitable size in which the employes may change their clothes. The toilet rooms shall have washbowls or washtroughs so arranged that water does not stand in them, of sufficient capacity adequately equipped with hot and cold water service. The washrooms shall be kept clean and sanitary and properly heated during cold weather. Each foundry shall establish and maintain separate from such toilet rooms, a suitable water closet. The toilet room and the water closet shall be connected with the foundry building making them accessible to it without exposure to the open air. They shall be properly heated, ventilated, cleaned and protected from the dust of the foundry. The requirement of the covered passageway between the foundry and the toilet rooms shall not apply to employes who as an ordinary part of their occupation work out of doors at all seasons of the year.
(b) Toilet facilities. Each foundry shall provide water closets or chemicals closets of an approved type, separate for each sex, in accordance with the following table:
Number of Persons Number of Closets Ratio
1—10 1 1:10
11—25 2 1:12 1/2
26—50 3 1:16 2/3
51—80 4 1:20
81—125 5 1:25
(c) Additional employes. For each additional 45 employes, or part of that number, the foundry shall provide one additional water closet.
(d) Number of employes. If less than 30 males are employed at one time, there shall be provided one individual urinal. If more than 30 and less than 80 males are employed, two urinals shall be provided, and thereafter one individual urinal shall be provided for every 80 men, or part of that number, employed. At least two linear feet of trough or slab urinal shall be considered the equivalent of one individual urinal.
(e) Washbasins. Washbasins with faucets for hot and cold water shall be supplied in accordance with the following table:
Number of Persons Number of Wash Basins Ratio
1—8 1 1:8
9—16 2 1:8
17—30 3 1:10
31—45 4 1:11 1/4
46—65 5 1:13
(f) Additional employes. For each additional 25 employes, or part of that number, at least one additional washbasin shall be supplied. Two feet of trough and two faucets supplying hot and cold water, so arranged that the water supply may be mixed to the desired temperature, shall be considered the equivalent of a washbasin as setout in subsection (e). If it is desirable to mix the water supply at some location remote from the trough, an outlet for the mixed supply shall be provided for at least every 2 feet of trough.
(g) Shower baths. Washrooms installed after 1927, where 20 to 50 men are employed, shall be provided with at least one shower bath with an ample supply of hot and cold water. For each additional 50 men, or part of that number, at least one additional shower bath shall be provided.
(h) Passageway. If workmen are employed in heated rooms or buildings of foundries, and the required toilet facilities are provided in adjacent buildings or rooms, a covered passageway leading to such facilities shall be made to protect the workmen from a sudden change of temperature.
(i) Calculation. In using the tables of this section for calculating the number of facilities required, the maximum number of persons using the facilities at any time may be considered rather than the total number of persons employed.

Number of Persons	Number of Closets	Ratio
1—10	1	1:10
11—25	2	1:12 1/2
26—50	3	1:16 2/3
51—80	4	1:20
81—125	5	1:25

Number of Persons	Number of Wash Basins	Ratio
1—8	1	1:8
9—16	2	1:8
17—30	3	1:10
31—45	4	1:11 1/4
46—65	5	1:13