Yes! All type of bridges are safe, provided they are designed and executed properly. There are many factors that decide the type of a proposed bridge. It could be the span of bridge, depth of river, asthetics, budget restrictions, availability of materials, etc.
The Tacoma Narrows Bridge was built in a location with high winds. High velocity winds can create an aerodynamic instability called flutter. Flutter may be mitigated by a stiff structure. That bridge was very flexible in torsion (more commonly known as twist). There were many warning signs of a disaster - the bridge had wild oscillations in high winds many times before it collapsed. If you ever see a video of a stop sign rotating about its post in a hurricane, as often done by on scene news crews, the phenomenon is completely analogous. Of course, during "normal" winds, the stop sign would not flutter - during the hurricane the wind speed exceeds the speed when we see the onset of flutter. All aircraft are designed to ensure the maximum speed of the aircraft is below the speed at the onset of flutter for its wings and other lifting surfaces. Here as well, the wing design may be stiffened if required to raise the flutter onset speed. After the Tacoma Narrows Bridge collapsed, many bridge designs were reviewed by engineers to ensure they would not have the same fate. The Whitestone Bridge, which crosses the East River from Queens to the Bronx in New York, was one that was stiffened by side bracing to raise the torsional stiffness and remove the concern about flutter. To my knowledge, that bridge was never subject to winds at a high enough speed in its pre-stiffened state to induce severe oscillations like those seen on the Tacoma Narrows Bridge.
Total Depth - cover
advantages of depth first search?
what is the standard depth of stairs
A "depth gauge micrometer" is used by engineers. A depth gauge micrometer is a precision instrument used to measure various depths of different items.
A micrometer can perform all of those measurements
A micrometer can measure the thickness, diameter, or depth of small objects with high precision. It is commonly used in engineering, machining, and manufacturing to ensure accuracy in measurements.
*Micrometer have a rotary handle and whereas vernier have a slider. *Micrometer is for measuring diameters while vernier is for measuring inside & outside diameter as well as depth. *Least Count of Vernier Caliper is 0.02mm *Least Count of Micrometer is 0.01mm
The least count of a vernier depth micrometer can be calculated using the formula: [ \text{Least Count} = \text{Value of one main scale division} - \text{Value of one vernier scale division} ] Typically, for a depth micrometer, the value of one main scale division is 1 mm, and if the vernier scale has 10 divisions that equal 9 mm, the least count would be: [ \text{Least Count} = 1 , \text{mm} - \left(\frac{9 , \text{mm}}{10}\right) = 0.1 , \text{mm} , \text{or} , 0.01 , \text{cm}. ]
Drops off to an abyss depth of 500 ft underneath the North tower.
A micrometer is best used when precise measurements of small objects are required, typically in the range of millimeters or thousandths of an inch, due to its high accuracy and resolution. It is ideal for measuring the thickness of materials, small diameters, or specific features where precision is critical. In contrast, calipers are more versatile for larger measurements and can measure external and internal dimensions, depth, and step measurements, but with less accuracy than a micrometer. Therefore, for tasks demanding extreme precision, a micrometer is the preferred tool.
The deepest sea bridge pier in the world is part of the Siduhe Bridge in China, with its piers extending approximately 300 meters (about 984 feet) below the water surface. This depth surpasses other notable deep bridge piers, highlighting the engineering challenges faced in constructing bridges in such extreme conditions. The Siduhe Bridge itself is part of the G50 Huyu Expressway and is renowned for its height and depth.
Measuring a blind hole typically involves using a depth gauge or a depth micrometer, which allows for precise measurement of the hole's depth without needing to access its bottom directly. The gauge is inserted into the hole until it contacts the bottom, and the measurement is read off the scale. Alternatively, a caliper with a depth rod can also be employed for similar measurements. Ensuring the tool is aligned correctly is crucial for an accurate reading.
"Bridge to Terabithia" is typically recommended for readers ages 8-12, but it can be enjoyed by older readers as well due to its powerful themes and emotional depth.
The magnet on the surface and the metal 300 ft down - no. Lowering the magnet to the metal, then lifting - yes.
A frost line depth chart shows the depth at which frost penetrates the ground in a specific location. It helps determine how deep foundations need to be to avoid damage from freezing temperatures.