This section is from the book "The Building Trades Pocketbook", by International Correspondence Schools. Also available from Amazon: Building Trades Pocketbook: a Handy Manual of reference on Building Construction.
Wash basins are known as round and oval, and may be had with or without overflow attached. Sizes of round bowls are 10,12,13,14,15,16,17,18, and 20 in. in diameter, measured from the outside of the flange. Oval patterns are 14 in. x 17 in., 15 in. X 19 in., 16 in. X 21 in. The 16" round, and the 15" X 19" oval basins are generally used. Wash basins should be set near windows, in a position convenient to put a mirror over them, so placed as to have the light from both sides.
Marble basin slabs are 1 1/4 in. thick, countersunk on top, and have molded exposed edges. Large slabs should be l 1/2 in. thick. Basin slabs are right or left hand, according as they set in a corner at the right or left hand as a person faces the basin. Backs are usually 8, 10, or 12 in. high, aprons 5 in. deep, and the height from top of slab to floor is generally
2 ft. 6 1/2 in. Corner basins should be provided with back and end plates; ordinary basins, with back plate only; recess basins, with back and two ends. Safes under basins are the same size as the slabs.