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Structural behavior of cantilever beams A famous photograph by Benjamin Baker, in which through a living model the cantilever structural principle on which the solution to the Firth Bridge over the Forth was based.
To illustrate the structural theory of a cantilever beam (Gerber), a human demonstration was carried out. The loads were represented by the person sitting in the middle of the span of the suspended span. The arms of the persons seated on both sides represented the traction at the joints; the wooden bars, the compression at the lower elements, and the bricks, the anchor points located at the pylons. The chairs represent the granite piles. Imagine the chairs 500 m apart and the men's heads as high as St. Paul's cross (London church, 104 m) their arms are represented by steel beams and the canes by 3.5 m diameter tubes at the base you get a good notion of the structure.
Heinrich Gerber applied in 1866 a theory that consisted in subdividing the continuous beam through ball-and-socket joints "which define a point of zero bending moment". This type of beam with intermediate joints is what is now known as a Gerber beam. The position where these hinges are located allows for influencing the behavior of the beam; therefore, it is not only used directly in some structures but in some projects, a real beam can be idealized by assimilating it to a Gerber beam, whose isostatic allows a simple approximate calculation
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To illustrate the structural theory of a cantilever beam (Gerber), a human demonstration was carried out. The loads were represented by the person sitting in the middle of the span of the suspended span. The arms of the persons seated on both sides represented the traction at the joints; the wooden bars, the compression at the lower elements, and the bricks, the anchor points located at the pylons. The chairs represent the granite piles. Imagine the chairs 500 m apart and the men's heads as high as St. Paul's cross (London church, 104 m) their arms are represented by steel beams and the canes by 3.5 m diameter tubes at the base you get a good notion of the structure.
Heinrich Gerber applied in 1866 a theory that consisted in subdividing the continuous beam through ball-and-socket joints "which define a point of zero bending moment". This type of beam with intermediate joints is what is now known as a Gerber beam. The position where these hinges are located allows for influencing the behavior of the beam; therefore, it is not only used directly in some structures but in some projects, a real beam can be idealized by assimilating it to a Gerber beam, whose isostatic allows a simple approximate calculation
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Civil Engineering Home™
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A diagram of the plumbing system under a kitchen sink. Let's break down the components and how they work:
Main Components:
* Sink: The visible part where dishes are washed.
* Drain: The pipe that carries water and waste away from the sink.
* Trap: A curved section of the drain pipe that holds water to prevent sewer gases from entering the home.
* Air-Admittance Valve: This valve allows air to enter the drain system, equalizing pressure and preventing gurgling or siphoning effects.
* Garbage Disposal: A device that grinds food waste before it enters the drain.
* Dishwasher Hose: The hose that connects the dishwasher to the drain.
* P-Trap: A U-shaped pipe that holds water to prevent sewer gases from entering the house.
How it Works:
1. Water Flow: When you drain water from the sink, it flows down the drain pipe.
2. Trap Function: The trap retains a small amount of water, creating a seal that prevents sewer gases from rising into the house.
3. Air Admittance Valve: When water is drained, it creates a slight vacuum in the drain pipes. The air-admittance valve opens to allow air to enter the system, equalizing the pressure and preventing siphoning of the water from the trap.
4. Garbage Disposal (if present): Food waste is ground up by the disposal and then flushed down the drain.
5. Dishwasher Connection: The dishwasher hose connects to the drain, allowing water and waste from the dishwasher to flow into the main drain system.
In Summary:
The diagram illustrates the plumbing system under a kitchen sink, highlighting the key components and their role in ensuring proper drainage and preventing sewer gas intrusion.
If you have any specific questions about a particular component or the plumbing process, feel free to ask!
Join 👉 @civil_engineering_home
Main Components:
* Sink: The visible part where dishes are washed.
* Drain: The pipe that carries water and waste away from the sink.
* Trap: A curved section of the drain pipe that holds water to prevent sewer gases from entering the home.
* Air-Admittance Valve: This valve allows air to enter the drain system, equalizing pressure and preventing gurgling or siphoning effects.
* Garbage Disposal: A device that grinds food waste before it enters the drain.
* Dishwasher Hose: The hose that connects the dishwasher to the drain.
* P-Trap: A U-shaped pipe that holds water to prevent sewer gases from entering the house.
How it Works:
1. Water Flow: When you drain water from the sink, it flows down the drain pipe.
2. Trap Function: The trap retains a small amount of water, creating a seal that prevents sewer gases from rising into the house.
3. Air Admittance Valve: When water is drained, it creates a slight vacuum in the drain pipes. The air-admittance valve opens to allow air to enter the system, equalizing the pressure and preventing siphoning of the water from the trap.
4. Garbage Disposal (if present): Food waste is ground up by the disposal and then flushed down the drain.
5. Dishwasher Connection: The dishwasher hose connects to the drain, allowing water and waste from the dishwasher to flow into the main drain system.
In Summary:
The diagram illustrates the plumbing system under a kitchen sink, highlighting the key components and their role in ensuring proper drainage and preventing sewer gas intrusion.
If you have any specific questions about a particular component or the plumbing process, feel free to ask!
Join 👉 @civil_engineering_home
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Waffle Slabs
A waffle slab is a type of concrete slab with a grid-like pattern of ribs or beams. It's strong, efficient, and perfect for large, open spaces.
Benefits:
- Structural efficiency
- Reduced material usage
- Improved load distribution
Ideal for:
- Commercial buildings
- Industrial facilities
- Parking garages
#WaffleSlab #Construction #Architecture #BuildingDesign"
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A waffle slab is a type of concrete slab with a grid-like pattern of ribs or beams. It's strong, efficient, and perfect for large, open spaces.
Benefits:
- Structural efficiency
- Reduced material usage
- Improved load distribution
Ideal for:
- Commercial buildings
- Industrial facilities
- Parking garages
#WaffleSlab #Construction #Architecture #BuildingDesign"
Join 👉 @civil_engineering_home
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