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The 1976 Memorial Day flood marked a milestone in Tulsa's search for flood solutions. A three-hour, 10-inch deluge occurred over the headwaters of Mingo, Joe and Haikey creeks. The resulting flood killed three people and caused $40 million in damages ($214 million in 2023 dollars) to more than 3,000 buildings.
Drainage gradient (DG) is a term in road design, defined as the combined slope due to road surface cross slope (CS) and longitudinal slope (hilliness). Although the term may not be used, the concept is also used in roof design and landscape architecture. If the drainage gradient is too low, rain and melt water drainage will be insufficient.
The engineer must fully understand limitations of each technique. For example, limit equilibrium is most commonly used and simple solution method, but it can become inadequate if the slope fails by complex mechanisms (e.g. internal deformation and brittle fracture, progressive creep, liquefaction of weaker soil layers, etc
Applying gravel, or "metalling", has had two distinct usages in road surfacing. The term road metal refers to the broken stone or cinders used in the construction or repair of roads or railways, [46] and is derived from the Latin metallum, which means both "mine" and "quarry". [47] The term originally referred to the process of creating a ...
d = run Δh = rise l = slope length α = angle of inclination. The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line is either the elevation angle of that surface to the horizontal or its tangent.
The Tulsa Voice is an Alt-Weekly newspaper covering entertainment and cultural events. Covering primarily economic events and stocks, the Tulsa Business Journal caters to Tulsa's business sector. Other publications include the Oklahoma Indian Times, the Tulsa Daily Commerce and Legal News, the Tulsa Beacon, This Land Press, and the Tulsa Free ...
A driveway (also called drive in UK English) [1] is a private road for local access to one or a small group of structures owned and maintained by an individual or group. Driveways rarely have traffic lights , but some may if they handle heavy traffic, especially those leading to commercial businesses or parks.
The soils cannot drain pore water fast enough in a repeated compression causing the pore water pressure to be accumulated to a high pressure. This causes the soils to lose their stress and become muddy. Any objects with apparent weights of less than of those of the ground's muddy water will float up. Manholes, which are sealed hollowed objects ...