The Bridgeport times and evening farmer., 1919-03-15

NJ and bath fixtures on the First Floor and extended to the roof with 1" in l creased diameter before passing l through the roof.
 Tests Severe.
 The Committee realizes that the ] tests applied to both buildings were severe and searching, and, perhaps, subjected both systems to stronger strain than will occur often in actual service, but it believes that any sys- | tenn of plumbing should have a suffi- cient factor of safety, and it believes the tests applied were not too strong i to insure such safety.
 Effect of Fouling on Both Systems. | The Committee realizes that both systems would show modified resr'ts l when the two systems have fouled in actual service, but in its opinion the | extent of fouling will not reduce to danger point the trap seals of the two kinds of anti-siphon traps used in the U. s. H. c. system, nor does It believe | that the fouling of the Bridgeport traps and vent pipes will be sufficient to endanger that system.
 Recommends Test for FouIing. The Committee thinks this question of the effect of fouIing on both anti | siphon and bend traps of sufficient | importance to warrant actual tests and experiments, and it recommends that these be made under competent supervision.
 Patented Articles.
 The Committee is satisfied that no traps, or plumbing fittings. used In ! either of the Black Rock buildings | tested, were controlled by patent or ! other proprietary restraint, and that any manufacturer of plumbing goods can make them.
 TESTS OF TWO STORY sENn-DE- TACHED TWO FAMILY Two Story Buildings.
 The tests of two story buildings were conducted at the Mill Green Group. These are all two story serni- detached two family houses. Type J-2 is arranged for one family in each half Of the building, separated by a party wall. Each half of the buiId- ing has a 4 soil stack extending | through the roof with W. C., Bath and Laundry close to the soil | stack on the second floor and a combination sink and laundry tub on the first floor distant about 11'-6'' from the soil stock. The two soil stacks drop under the cellar floor, urite in @ 4" main drain which passes out of the front of the building and connects with a G. tile house sewer: There is no house trap or fresh air inlet. The waste of the combination fixture is not extended to the roof.
 Type HI and H-3 buildings are supertmposed apartments arranged for one family on each floor.
 There is one A soil stack, extend ed through the roof, and one 2" waste stack extended through the roof with out enlargement at roof. The base of the g. waste extends across the cellar ceiling, and connects with the 4 soil stack. The soil stack drops under the cellar floor, passes out of the building at the front wall and connects with a G. tile sewer. There is no house trap or fresh air inlet.
 General For Two Story Buildings.
 In all of the two story buildings the lavatory traps are the same anti siphon trap used in the lavatory in the Black Rock building. The bath and combination fixture traps are anti-siphon 4'' 5" drum traps made up with stock fittings.
 In all of these buildings the W. C.'s have flush tanks. There is no rain water connected with the plumb ing drains. Outside leaders are used.
 At the second uOOr III some or the buildings a special combination fitting is used for the ". C. and bath tub. RESULTS OF TESTS OF PLUMBING
 IN THE DIFFERENT TYPES OF TWO STORY BUILDINGS.
 Results of Tests in Two Story 1 Buildings
 I No traps were siphoned so as to en- danger the water seal of the traps. No | e1,r gered the water seal of the traps, but the Committee thinks Il advisable to increase the 2' waste vents to A be- fore passing through the roof or that they be otherwise protected against frost closure.
 Conclusions
 1: In the buildings examined and tested the Committee finds the work we'll done and the workmanship good.
 2: Having in mind the war stan dards and the restrictions imposed by the War Industries Board for con- serving metal, the Committee finds the design, workmanship and material of the plumbing are justified and the plumbing is reasonably safe for a linn ited number of years and is not a menace to health.
 8: The three story apartment building at Black Rock CType G-2) showed insufficient protection against back pressure at the W. c. and bath on the first floor under the most Sc were conditions of the tests applied, which conditions would be of very in frequent occurrence in actual ser vice. This defect, however, should be remedied and can be done most cheaply by installing a, 2'' back pres sure relief pipe at each stack in these buildings as hereinbefore specified. This pipe is not recommended to pre- vent trap siphonage but is required to prevent back pressure. If the plumb ing is improved as above specified the Committee would consider it safe.
 4: In two story, two family build ings of Types HI anad H-3, having a % vent to the roof from connbina- ton fixture of sink and laundry tray on two floors, the Committee recona- mends that the 9" vent be increased to 4" before passing through the roof or be otherwise protected against clos ure by frost. If the plumbing is i'm proved as above specified the Com !