Search results
Results From The WOW.Com Content Network
A drop structure, also known as a grade control, sill, or weir, is a manmade structure, typically small and built on minor streams, or as part of a dam's spillway, to pass water to a lower elevation while controlling the energy and velocity of the water as it passes over.
Inside the dock, the depth of water beneath the sill's level depends only on the depth to which the dock was excavated, although this obviously increases construction costs. The importance of the sill, and the tide's height above it, is reflected by these dock sills becoming an important local datum level and for tide tables being calculated ...
On 25 November 2004 the Civil Aviation Authority of New Zealand raised New Zealand's transition altitude from 11,000 to 13,000 feet (3,400 to 4,000 m) and changed the transition level from FL130 to FL150. [8] The transition level (TL) is the lowest flight level above the transition altitude. The table below shows the transition level according ...
The influence of an aquatic sill on fjord water circulation. An aquatic sill (or an oceanic sill) is a sea floor barrier of relatively shallow depth (tens to hundreds of meters) that restricts water movement between benthic zones of an oceanic basin or lake bottom. [1] There are roughly 400 sills in the Earth's oceans, covering 0.01% of the ...
A water table is a projection of lower masonry on the outside of a wall, slightly above the ground, or at the top of a wainscot section of a wall (in this case also known as a sill). It is both a functional and architectural feature that consists of a projection that deflects water running down the face of a building away from lower courses or ...
In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock. A sill is a concordant intrusive sheet , meaning that it does not cut across preexisting rock beds.
The south wall is only as high as the window-sill level. The west wall is standing almost intact to gable height, although the lining of the original door has been replaced by modern brickwork. The north transept is 24 feet (7.3 m) long and 24 feet (7.3 m) wide.
The surface area of the upper pool is 1,595 acres (6.45 km 2) and the capacity is 15,800 acre-feet (19,500,000 m 3). The drainage area above the dam site is 148,084 square miles (383,540 km 2). [3] The 7,400 foot (2,300 m)-long dam consists of a low concrete apron and sill surmounted by tainter gates separated by 10 feet (3.0 m) concrete piers.