For a basement room to be legally occupied, Mr. Lasser said, it must satisfy lighting, ventilation, drainage, painting, ceiling height and egress requirements of the New York City Housing Maintenance Code.
However, in the third period the rapid drainage of foam height from 150 to 100 mm in only 60 s was observed.
Afterward, a slow drainage of the foam height and bubble coalescence was observed in the fourth stage.
Once foam generation was complete, properties such as foam height, liquid drainage, half-life, decay time and density were recorded by the dynamic foam analyzer.
The well diameter, hydraulic conductivity of the well drainage pack, and screen height and screen depth of the well have very little effect on the wetted width for a given liquid flux.
In order to find a simple solution to the problem in the Thar desert of Rajasthan, India, the authors used the well-known ARC/INFO software for simulation of height and drainage network using the scarce topographical information for a sandy terrain near Jodhpur.
The discussion of optimum channel height and drain performance was made using two factors "pumping efficiency" and "drainage speed".
These soil and vegetation maps were derived from a hydrologically normalized DEM through the HAND (Height Above the Nearest Drainage) technique, a new type of terrain model procedure.
In Fig. 2, three kinds of 110 mm drill holes, representing low, middle and high positioned holes, are set in the roof of the return way in a sector pattern to investigate the drainage effect of different drill-hole heights.
The HAND model normalizes topography according to the local relative heights found along the drainage network, and in this way, presents the topology of the relative soil gravitational potentials, or local draining potentials.
