Engineering Manual for Civil Works ...War Department, Office of the chief of engineers, 1946 |
Common terms and phrases
abutment analysis backfill base width blanket Chapter CHIEF OF ENGINEERS chute spillway CIVIL WORKS ENGINEERING cofferdam compaction compressive compressive stress construction contraction joints core crest cut-and-cover depth determined discharge discussed drain drainage drawdown earth dam economical elevation embankment dam ENGINEERING DIVISION ENGINEERING MANUAL excavation factor of safety feet flood wall floor slab flow forces foundation material foundation stability gate structure girder gravity dam grouting height horizontal hydraulic fill dams hydrostatic pressure impervious impervious core investigated load lock maximum method minimum navigation normal ogee operation paragraph pervious pier piezometers pipe pool ratio reservoir resistance riprap rock foundation rolled fill rolled-fill roller gate seepage settlement shear strength shell shown on plate slope protection Soil Mechanics SPILLWAYS AND OUTLET steel stilling basin stream tailwater TAINTER GATES thickness trunnion tunnel ungated spillway uplift usually values vertical water surface waterway weir zone
Popular passages
Page 1 - ... fill. When such areas from several concentrations overlap, the total load shall be considered as uniformly distributed over the area defined by the outside limits of the individual areas, but the total width of distribution shall not exceed the total width of the supporting slab. For single spans, the effect of live load may be neglected when the depth of fill is more than 8...
Page 1 - ... from several concentrations overlap, the total load shall be considered as uniformly distributed over the area defined by the outside limits of the individual areas, but the total width of distribution shall not exceed the total width of the supporting slab. For single spans, the effect of live load may be neglected when the depth of fill is more than 8 feet and exceeds the span length; for multiple spans, it may be neglected when the depth of fill exceeds the distance between faces of end supports...
Page 9 - Stress on extreme fibers of pins.... 30,000 Fiber stresses in butt welds, due to bending, shall not exceed the values prescribed for tension and compression, respectively. Fully continuous beams and girders may be proportioned for negative moments which are maximum at interior points of support, at a unit bending stress 20 percent higher than above stated; provided that the section modulus used over supports shall not be less than that required for the maximum positive moments in the same beam or...
Page 9 - I is the unsupported length and d the depth, of the member; b is the width, and t the thickness, of its compression flange; all in inches; except that...
Page iii - ... definition of jetty. In the United States as well as in the United Kingdom, a breakwater is a structure protecting a harbor, anchorage or basin from waves, thereby preventing these from exerting their destructive influence upon the area enclosed for shipping reception. A jetty in the United States is a structure extending into a body of water to direct and confine the stream or tidal flow to a selected channel or to prevent shoaling. Jetties are built at the river mouth or bay entrance to help...
Page 1 - Distribution of Wheel Loads Through Earth Fills. When the depth of fill is 2 feet or more, concentrated loads shall be considered as uniformly distributed over a square, the sides of which are equal to 1% times the depth of fill. When such areas from several concentrations overlap, the total load shall be considered as uniformly distributed over the area defined by the outside limits of the individual areas, but the total width of distribution shall not exceed the total width of the supporting slab.
Page 3 - For minimum cost, the dam must be designed for maximum utilization of the most economical materials available, including material which must be excavated for its foundations and for appurtenant structures. An earthfill dam must be safe and stable during all phases of construction and operation of the reservoir. To accomplish this, the following criteria must be met: (1) The embankment must be safe against overtopping during occurrence of the inflow design flood by the provision of sufficient spillway...
Page 8 - Specifications for the Design, Fabrication, and Erection of Structural Steel for Buildings...
Page 9 - ... 30,000 Fiber stresses in butt welds, due to bending, shall not exceed the values prescribed for tension and compression, respectively. Fully continuous beams and girders may be proportioned for negative moments which are maximum at interior points of support, at a unit bending stress 20 percent higher than above stated; provided that the section modulus used over supports shall not be less than that required for the maximum positive moments in the same beam or girder, and provided that the compression...