Investigation of the Hydraulics of Horizontal Drains in Plumbing Systems, Issues 86-91U.S. Department of Commerce, National Bureau of Standards, 1964 - 38 pages Results are reported from an investigation of the hydraulics of flow in experimental apparatus simulating nominally horizontal simple and branching drains of plumbing systems. The data are correlated with limited findings in an earlier, unpublished NBS study the results of which have been utilized in current plumbing codes. The need for further research is pointed out, particularly in relation to hydraulic performance of drain systems as affected by steep slopes, drain storage volume, energy losses at stack bases, attenuation of water depths and discharge rates in long drains, and large drain diameters. |
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... slope , and other factors on hydraulic capacity . 7.5 . Surge - flow capacities of simple drains .... 7.6 . Steady flow capacities of compound drains . 7.7 . Capacities for surge flow superimposed on steady flow .. 17 7.8 . Need for ...
... slope , and other factors on hydraulic capacity . 7.5 . Surge - flow capacities of simple drains .... 7.6 . Steady flow capacities of compound drains . 7.7 . Capacities for surge flow superimposed on steady flow .. 17 7.8 . Need for ...
Page 1
... slopes , drain storage volume , energy losses at stack bases , attenuation of water depths and discharge rates in long drains , and large drain diameters . Analysis yielded equations useful in estimating hydraulic capacities for surge ...
... slopes , drain storage volume , energy losses at stack bases , attenuation of water depths and discharge rates in long drains , and large drain diameters . Analysis yielded equations useful in estimating hydraulic capacities for surge ...
Page 2
... slope time functional symbol angle of inclination from the horizontal ( equivalent to S ) mean velocity vertical distance from drain invert to center of gravity of cross section of water stream Subscripts : с confluence of steady flow ...
... slope time functional symbol angle of inclination from the horizontal ( equivalent to S ) mean velocity vertical distance from drain invert to center of gravity of cross section of water stream Subscripts : с confluence of steady flow ...
Page 3
... slope and diameter . A soil pipe is a pipe which conveys the discharge of water closets or fixtures having similar func- tions , with or without the discharge from other fixtures . * Steady flow is a type of flow in which the hydraulic ...
... slope and diameter . A soil pipe is a pipe which conveys the discharge of water closets or fixtures having similar func- tions , with or without the discharge from other fixtures . * Steady flow is a type of flow in which the hydraulic ...
Page 4
... slope , and roughness of the drain ; and by water already flowing in the drain when the surge is introduced . After maximum depth is produced , gravitational forces become predominant . Subsequently , the surge depth gradually decreases ...
... slope , and roughness of the drain ; and by water already flowing in the drain when the surge is introduced . After maximum depth is produced , gravitational forces become predominant . Subsequently , the surge depth gradually decreases ...
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