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Straight, clear, smooth concrete-walled channels speed up flow, and are therefore likely to make flooding downstream worse. Modern flood control seeks to "slow the flow", and deliberately flood some low-lying areas, ideally vegetated, to act as sponges, letting them drain again as the floodwaters go down.
Anchor channels, invented by Anders Jordahl in 1913, are steel channels cast flush in reinforced concrete elements to allow the installation of channel bolts for the fastening of components. Anchor channels consist of steel C-shaped channels and anchors (mostly headed studs ) which are connected to the channel by welding or riveting/forging.
The structural channel is not used as much in construction as symmetrical beams, in part because its bending axis is not centered on the width of the flanges. If a load is applied equally across its top, the beam will tend to twist away from the web. This may not be a weak point or problem for a particular design, but is a factor to be ...
However the brothers dug trenches and poured some concrete to make it appear work had been done. They continued to pressure the victim for more money, including wiring a third party $200,000 (£ ...
A coffee shop in Middleborough, Massachusetts, went viral overnight for offering free coffee to customers who entered the shop while dancing.
Philippine Vice President Sara Duterte said she has contracted a hired killer to assassinate her country's president in a bizarre public threat made amid worsening political divisions.
The channels are formed in large metal forms that (usually) have a pre-determined channel width, depth, and slope. Like in the cast-in-place method, a metal frame is attached to the form and concrete is poured and finished in a factory atmosphere. The advantage to the pre-cast trench drain is again time savings—big time savings at the job site.
Drone sightings in recent months, primarily over New Jersey and portions of New York, have raised the alarm among locals and security concerns for authorities, who fear foreign agents are behind them.
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