Deutsche online vorlesungen und e lecturesHenning Urs
Ein Fundus für Tausende von Vorlesungs- und Vortragsvideos, gestreamten Veranstaltungen, Repetitorien, Kolloquien, Podcasts und Tagungen! Anbieter von MOOCs, Webinaren und Kursen sind hier noch ausgespart.
This document provides an overview of various branches of civil engineering including structural engineering, transportation engineering, geotechnical engineering, environmental engineering, construction management, quantity surveying, irrigation engineering, and earthquake engineering. It also discusses related topics like surveying, roads, railways, soil mechanics, fluid mechanics, and the roles of civil engineers in different construction projects. The key branches covered are structural design of buildings and bridges, transportation infrastructure like roads and railways, foundation design and geotechnical soil testing, water and wastewater management, construction planning and management, and disaster mitigation.
This document discusses fluid mechanics and hydraulics concepts including:
1. Definitions of density, specific gravity, atmospheric pressure, absolute and gauge pressure.
2. Descriptions of viscosity, laminar flow, turbulent flow, continuity equation, and steady vs unsteady flow.
3. Explanations of surface tension, capillarity, hydrostatic pressure, buoyancy, and center of pressure.
4. Discussions of manometers, energy equations, forces on submerged surfaces, and fluid static forces.
Deutsche online vorlesungen und e lecturesHenning Urs
Ein Fundus für Tausende von Vorlesungs- und Vortragsvideos, gestreamten Veranstaltungen, Repetitorien, Kolloquien, Podcasts und Tagungen! Anbieter von MOOCs, Webinaren und Kursen sind hier noch ausgespart.
This document provides an overview of various branches of civil engineering including structural engineering, transportation engineering, geotechnical engineering, environmental engineering, construction management, quantity surveying, irrigation engineering, and earthquake engineering. It also discusses related topics like surveying, roads, railways, soil mechanics, fluid mechanics, and the roles of civil engineers in different construction projects. The key branches covered are structural design of buildings and bridges, transportation infrastructure like roads and railways, foundation design and geotechnical soil testing, water and wastewater management, construction planning and management, and disaster mitigation.
This document discusses fluid mechanics and hydraulics concepts including:
1. Definitions of density, specific gravity, atmospheric pressure, absolute and gauge pressure.
2. Descriptions of viscosity, laminar flow, turbulent flow, continuity equation, and steady vs unsteady flow.
3. Explanations of surface tension, capillarity, hydrostatic pressure, buoyancy, and center of pressure.
4. Discussions of manometers, energy equations, forces on submerged surfaces, and fluid static forces.
The document contains 7 practice problems for applying Bernoulli's equation to fluid mechanics situations:
1) Determining the diameter of a jet of water flowing from a tank if the water level remains constant
2) Determining if the water level in a tank with inflows and an outflow weir is rising or falling
3) Calculating pressures and drawing hydraulic grade lines for a pipe system with and without a nozzle
4) Analyzing forces on a vertical gate from upstream water with varying depths
5) Calculating flow rates and pressures at several points in a branched pipeline system
This document provides conversion factors between British gravitational (BG) units and International System of Units (SI) units for various quantities in fluid mechanics and heat transfer. It lists units for length, area, mass, density, force, pressure, temperature, velocity, power, viscosity, volume, and flow rate. For each quantity, it specifies the conversion factor to multiply the BG unit by to obtain the equivalent SI unit. The list of conversion factors is extensive and covers many common units needed for engineering calculations involving fluid properties, forces, heat transfer, and fluid flow behaviors.
Manometers and Pitot tubes are devices used to measure fluid pressure and velocity. A manometer uses a liquid column to measure pressure differences, while a Pitot tube uses a pressure tap to measure flow velocity based on Bernoulli's equation. A manometer can be a simple U-tube or inclined design, while orifices are openings that can be classified by size, shape, and flow characteristics. A Pitot tube has a open end facing flow and static pressure taps, allowing velocity measurement. These devices are essential tools for analyzing fluid systems.
This document contains 5 questions regarding fluid mechanics. Question 1 involves calculating the torque and power required to overcome viscous resistance in a rotating shaft. Question 2 involves calculating pressure drop, head loss, and power required for a given water flow rate through a pipe and orifice system. Question 3 determines the necessary counterweight to balance a water gate. Question 4 calculates the water level in a tank given pump specifications and a triangular weir. Question 5 determines if a hydraulic machine is a pump or turbine and calculates its power output or input.
This document provides information and examples for calculating surface areas and volumes of rectangular and round tanks, as well as clarifier loading calculations. It includes formulas and step-by-step worked examples for determining surface area of rectangles and circles, and volume of rectangular and cylindrical tanks, including those with conical bottoms. Clarifier detention time is defined as the time it takes for water to travel from inlet to outlet.
1) The document presents the solution to calculating the force in a strut connecting two points on a small dam given information about the dam geometry and hydrostatic forces.
2) It also provides examples of calculating forces on structures like gates and stops subjected to hydrostatic forces from water, including determining the minimum volume of concrete needed to balance these forces.
3) The solutions involve applying principles of equilibrium, calculating hydrostatic force components, and summing moments. Analytical expressions for determining forces are developed.
The document contains questions related to open channel flow, pipe flow, and hydraulic structures. It asks the reader to calculate parameters like normal depth, critical depth, flow depth, head loss, forces on structures, and more for channels, pipes and hydraulic elements based on given flow rates, dimensions, slopes and roughness. The reader is asked to show working and assumptions for multi-part questions involving concepts like specific energy, critical flow, flow transitions, weirs and sluice gates.
The document describes a calculation to determine the height (H) of oil in a rectangular tank at which a hinged gate will just begin to rotate counterclockwise. The gate is subjected to an upward force from the oil (F1) and a leftward force from the air pressure (F2). F1 is calculated based on the oil density, area of the gate, and height of the oil column. F2 is given as the air pressure times the gate area. Setting F1 equal to F2 and solving for H gives the critical height at which rotation will occur.
The document discusses several fluid mechanics problems involving pipes, valves, pumps, and Venturi meters. It provides the relevant equations, diagrams, and step-by-step workings to calculate pressure, velocity, discharge, and other flow parameters for each problem.
The document also contains an Arabic passage discussing philosophical concepts like thinking outside the box and challenging preconceived notions.
The document contains questions related to open channel flow, pipe flow, and hydraulic structures. It asks the reader to calculate parameters like normal depth, critical depth, flow depth, head loss, force on structures, and more for channels, pipes and hydraulic elements based on given cross-sections, slopes, roughness and discharge. It also contains multiple choice questions testing understanding of concepts like Darcy-Weisbach equation, Chezy's formula, relationship between EGL, HGL and velocity head.
The document appears to be a 14-page final exam for a Hydraulic I course taught by Dr. Ezzat El-sayed G. SALEH in January 2017. It contains multiple pages of questions related to hydraulics for students taking the CVE 215 Hydraulic I course final.
The document contains lecture notes on hydraulics from Minia University in Egypt. It defines key terms related to fluid mechanics such as density, viscosity, laminar and turbulent flow, compressibility, and surface tension. It also provides the continuity equation and defines different types of fluid flow such as steady, uniform, rotational, and one, two, and three-dimensional flow. The notes conclude by listing the Bernoulli equation and its assumptions.
The document is a study sheet on Bernoulli's equation and its applications. It contains 7 practice problems applying Bernoulli's equation to calculate things like water flow rates, pressures at different points, and forces on gates. Diagrams illustrate the hydraulic systems and students are asked to calculate values, sketch graphs, and determine if water levels are rising or falling. The problems involve nozzles, pipes, weirs, and cylinders to demonstrate applications of Bernoulli's equation in hydraulics.
This document provides an overview of various topics in civil engineering, including the different branches and their applications. It discusses surveying, structural engineering, transportation engineering, geotechnical engineering, construction management, irrigation engineering, earthquake engineering, and the roles of civil engineers in construction projects like buildings and dams. The key information presented includes the different types of structures, loads, soils, roads, and the purposes and methods of each civil engineering specialty.
This document discusses Pelton wheel turbines. It begins with an overview of Pelton wheels and their components. It then provides explanations of key concepts such as impulse turbines, velocity diagrams, effective head, maximum power output, and hydraulic efficiency. Practical considerations for Pelton wheel design like optimal bucket angles are also covered. Finally, it discusses turbine selection and the typical range of specific speeds for different turbine types.
This document defines and describes different types of fluid flows. It discusses ideal and real fluids, Newtonian and non-Newtonian fluids, laminar and turbulent flow, steady and unsteady flow, uniform and non-uniform flow, compressible and incompressible flow, rotational and irrotational flow, and viscous and non-viscous flow. Key fluid properties like viscosity, density, and compressibility are covered. Examples are provided to illustrate different fluid types and flows.
This document contains diagrams and questions related to fluid mechanics:
1) It shows diagrams of different devices moving in fluid and asks whether each will move in the positive or negative x-direction assuming equal pressure at the entrance and exit.
2) It shows a diagram of a sprinkler and asks to determine the torque required to prevent its rotation given the fluid velocity and distance from the point of rotation.
3) It shows a diagram of a vane moving through fluid and asks to determine the force on the vane given its angle, velocity through the fluid, and the fluid velocity striking it.
4) It asks which factors the pressure at the summit of a siphon depends on out of liquid density
The document discusses hydraulic grade lines (HGL) and energy grade lines (EGL), which are tools for representing energy in hydraulic systems. It notes that three key equations - discharge and continuity, energy, and momentum - are fundamental to solving most hydrodynamic problems. HGLs and EGLs provide a visual representation of energy along a flow path to help identify points of concern in design and analysis. Examples are given of how HGLs and EGLs change with factors like pipe diameter, valves, nozzles, pumps, and turbines.
- Multi-stage centrifugal pumps are used to produce high heads. They are suitable for large discharge and smaller heads and require less floor area and foundation than reciprocating pumps.
- The efficiency of centrifugal pumps is less than reciprocating pumps. Power required to drive centrifugal pumps is directly proportional to the fourth power of the impeller diameter.
- Axial flow pumps are preferred for flood control and irrigation applications due to their ability to provide high discharge.
The document contains 7 practice problems for applying Bernoulli's equation to fluid mechanics situations:
1) Determining the diameter of a jet of water flowing from a tank if the water level remains constant
2) Determining if the water level in a tank with inflows and an outflow weir is rising or falling
3) Calculating pressures and drawing hydraulic grade lines for a pipe system with and without a nozzle
4) Analyzing forces on a vertical gate from upstream water with varying depths
5) Calculating flow rates and pressures at several points in a branched pipeline system
This document provides conversion factors between British gravitational (BG) units and International System of Units (SI) units for various quantities in fluid mechanics and heat transfer. It lists units for length, area, mass, density, force, pressure, temperature, velocity, power, viscosity, volume, and flow rate. For each quantity, it specifies the conversion factor to multiply the BG unit by to obtain the equivalent SI unit. The list of conversion factors is extensive and covers many common units needed for engineering calculations involving fluid properties, forces, heat transfer, and fluid flow behaviors.
Manometers and Pitot tubes are devices used to measure fluid pressure and velocity. A manometer uses a liquid column to measure pressure differences, while a Pitot tube uses a pressure tap to measure flow velocity based on Bernoulli's equation. A manometer can be a simple U-tube or inclined design, while orifices are openings that can be classified by size, shape, and flow characteristics. A Pitot tube has a open end facing flow and static pressure taps, allowing velocity measurement. These devices are essential tools for analyzing fluid systems.
This document contains 5 questions regarding fluid mechanics. Question 1 involves calculating the torque and power required to overcome viscous resistance in a rotating shaft. Question 2 involves calculating pressure drop, head loss, and power required for a given water flow rate through a pipe and orifice system. Question 3 determines the necessary counterweight to balance a water gate. Question 4 calculates the water level in a tank given pump specifications and a triangular weir. Question 5 determines if a hydraulic machine is a pump or turbine and calculates its power output or input.
This document provides information and examples for calculating surface areas and volumes of rectangular and round tanks, as well as clarifier loading calculations. It includes formulas and step-by-step worked examples for determining surface area of rectangles and circles, and volume of rectangular and cylindrical tanks, including those with conical bottoms. Clarifier detention time is defined as the time it takes for water to travel from inlet to outlet.
1) The document presents the solution to calculating the force in a strut connecting two points on a small dam given information about the dam geometry and hydrostatic forces.
2) It also provides examples of calculating forces on structures like gates and stops subjected to hydrostatic forces from water, including determining the minimum volume of concrete needed to balance these forces.
3) The solutions involve applying principles of equilibrium, calculating hydrostatic force components, and summing moments. Analytical expressions for determining forces are developed.
The document contains questions related to open channel flow, pipe flow, and hydraulic structures. It asks the reader to calculate parameters like normal depth, critical depth, flow depth, head loss, forces on structures, and more for channels, pipes and hydraulic elements based on given flow rates, dimensions, slopes and roughness. The reader is asked to show working and assumptions for multi-part questions involving concepts like specific energy, critical flow, flow transitions, weirs and sluice gates.
The document describes a calculation to determine the height (H) of oil in a rectangular tank at which a hinged gate will just begin to rotate counterclockwise. The gate is subjected to an upward force from the oil (F1) and a leftward force from the air pressure (F2). F1 is calculated based on the oil density, area of the gate, and height of the oil column. F2 is given as the air pressure times the gate area. Setting F1 equal to F2 and solving for H gives the critical height at which rotation will occur.
The document discusses several fluid mechanics problems involving pipes, valves, pumps, and Venturi meters. It provides the relevant equations, diagrams, and step-by-step workings to calculate pressure, velocity, discharge, and other flow parameters for each problem.
The document also contains an Arabic passage discussing philosophical concepts like thinking outside the box and challenging preconceived notions.
The document contains questions related to open channel flow, pipe flow, and hydraulic structures. It asks the reader to calculate parameters like normal depth, critical depth, flow depth, head loss, force on structures, and more for channels, pipes and hydraulic elements based on given cross-sections, slopes, roughness and discharge. It also contains multiple choice questions testing understanding of concepts like Darcy-Weisbach equation, Chezy's formula, relationship between EGL, HGL and velocity head.
The document appears to be a 14-page final exam for a Hydraulic I course taught by Dr. Ezzat El-sayed G. SALEH in January 2017. It contains multiple pages of questions related to hydraulics for students taking the CVE 215 Hydraulic I course final.
The document contains lecture notes on hydraulics from Minia University in Egypt. It defines key terms related to fluid mechanics such as density, viscosity, laminar and turbulent flow, compressibility, and surface tension. It also provides the continuity equation and defines different types of fluid flow such as steady, uniform, rotational, and one, two, and three-dimensional flow. The notes conclude by listing the Bernoulli equation and its assumptions.
The document is a study sheet on Bernoulli's equation and its applications. It contains 7 practice problems applying Bernoulli's equation to calculate things like water flow rates, pressures at different points, and forces on gates. Diagrams illustrate the hydraulic systems and students are asked to calculate values, sketch graphs, and determine if water levels are rising or falling. The problems involve nozzles, pipes, weirs, and cylinders to demonstrate applications of Bernoulli's equation in hydraulics.
This document provides an overview of various topics in civil engineering, including the different branches and their applications. It discusses surveying, structural engineering, transportation engineering, geotechnical engineering, construction management, irrigation engineering, earthquake engineering, and the roles of civil engineers in construction projects like buildings and dams. The key information presented includes the different types of structures, loads, soils, roads, and the purposes and methods of each civil engineering specialty.
This document discusses Pelton wheel turbines. It begins with an overview of Pelton wheels and their components. It then provides explanations of key concepts such as impulse turbines, velocity diagrams, effective head, maximum power output, and hydraulic efficiency. Practical considerations for Pelton wheel design like optimal bucket angles are also covered. Finally, it discusses turbine selection and the typical range of specific speeds for different turbine types.
This document defines and describes different types of fluid flows. It discusses ideal and real fluids, Newtonian and non-Newtonian fluids, laminar and turbulent flow, steady and unsteady flow, uniform and non-uniform flow, compressible and incompressible flow, rotational and irrotational flow, and viscous and non-viscous flow. Key fluid properties like viscosity, density, and compressibility are covered. Examples are provided to illustrate different fluid types and flows.
This document contains diagrams and questions related to fluid mechanics:
1) It shows diagrams of different devices moving in fluid and asks whether each will move in the positive or negative x-direction assuming equal pressure at the entrance and exit.
2) It shows a diagram of a sprinkler and asks to determine the torque required to prevent its rotation given the fluid velocity and distance from the point of rotation.
3) It shows a diagram of a vane moving through fluid and asks to determine the force on the vane given its angle, velocity through the fluid, and the fluid velocity striking it.
4) It asks which factors the pressure at the summit of a siphon depends on out of liquid density
The document discusses hydraulic grade lines (HGL) and energy grade lines (EGL), which are tools for representing energy in hydraulic systems. It notes that three key equations - discharge and continuity, energy, and momentum - are fundamental to solving most hydrodynamic problems. HGLs and EGLs provide a visual representation of energy along a flow path to help identify points of concern in design and analysis. Examples are given of how HGLs and EGLs change with factors like pipe diameter, valves, nozzles, pumps, and turbines.
- Multi-stage centrifugal pumps are used to produce high heads. They are suitable for large discharge and smaller heads and require less floor area and foundation than reciprocating pumps.
- The efficiency of centrifugal pumps is less than reciprocating pumps. Power required to drive centrifugal pumps is directly proportional to the fourth power of the impeller diameter.
- Axial flow pumps are preferred for flood control and irrigation applications due to their ability to provide high discharge.
10. Among the many areas of engineering being especially
the civil-Art is formative for our environment
and our architectural culture!
11. What does a civil engineer?
Structural Engineering
Houses, Bridges, tunnels
Transportation
Roads, Raills, Railway Stations, Airports
Hydraulic Engineering and Water Mangments
Dams, Water treatment Plants, Sewers
Enviromental
Power Plants
31. • In Ingeniering and Planning Offices,
Where a Civil Engineer Work?
• In Construction Companies,
• Government agencies and offices,
• In the real estate and project development,
• In Sience and research,
• Self-employed, employed or civil servants
35. Stellung im Beruf
72%
6%
22% Selbstständige
Beamte
Angestellte
Quelle: Erwerbstätigenstatistik 2009
Berufsgruppe Erwerbstätige
insgesamt
Selbstständige Beamte Angestellte Arbeiter
insgesamt 154.000 33.000 9.000 111.000 k. A.
weiblich 25.000 k. A. k. A. 20.000 k. A.
36. Was zeichnet den
Bauingenieur(beruf) aus?
Engagement: Von Hochwasserschutz bis Energieeinsparung
Innovation: Erfindergeist ist willkommen
Kontakte: Internationale Kooperationen und Teams
Reiselust: Projekte auf allen Kontinenten möglich
Anerkennung: Weltweit hochgeschätzte, solide Ausbildung
Sicherheit: Gute Einstiegsgehälter und Karrierechancen
37. Das Studium
67 Universitäten, Technische Hochschulen und
Fachhochschulen in ganz Deutschland
Jede Uni/Hochschule mit eigenem Profil
und Schwerpunkt
Bafög-gefördert
42. … und nach mehrjähriger
freiberuflicher Selbstständigkeit kann
man den Titel
„BERATENDER INGENIEUR“
erwerben.
Ein Qualitätsbegriff -
Made in Germany!
44. Ein Land, das kaum Rohstoffe
fördern kann, muss die immateriellen
Rohstoffe fördern.
Den Rohstoff Geist!
Er ist ein nachwachsender Rohstoff.
45. Ingenieure braucht das Land!
Im Jahr 2010 verließen 3.300 Absolventen die
Hochschulen
Gebraucht werden jährlich ca. 4.500 Absolventen
Im Juli 2011 gab es 10.800 offene Stellen
Arbeitslos gemeldet waren 2.900 Bau.-Ing.
Quelle: HV der deutschen Bauindustrie
47. Eine große Chance für Frauen:
Im Jahr 2009 standen
16 % weibliche Bauingenieure
84 % männlichen Kollegen
gegenüber.
Tendenz: steigend!
48. Eine große Chance für Frauen:
84%
16%
Männer
Frauen
Quelle: Erwerbstätigenstatistik 2006
Berufsgruppe Erwerbstätige insgesamt Frauen Männer
Bauingenieure 154.000 25.000 129.000
49. FH-Absolventen:
3.300,- Euro (West) / 3.000,- Euro (Ost)
TU-Absolventen:
3.700,- Euro (West) / 3.300,- Euro (Ost)
(Stand 2010)
Steigend nach Berufserfahrung, Leistung
und Verantwortung
Durchschnittliche Einstiegsgehälter:
54. Ohne Ingenieure läuft, geht und
steht gar nichts. Ingenieure haben
überall ihr Gehirn und ihre Hände
im Spiel.
Ingenieure sind es, die (bei aller
Bescheidenheit) die Welt um und
für uns (mit)bauen. Nothing without
Engineering
55. Um das vielen Menschen zu zeigen,
haben die Ingenieurkammern
bundesweit die Initiative „Kein Ding
ohne ING.“ gestartet.
Die Initiative arbeitet einfach und
prägnant mit Dingen, die ohne
Ingenieure nicht möglich wären.
Nothing without
Engineering
56. Dazu gehören die großen,
eindrucksvollen Gebäude und
spektakulären Brücken
genauso wie vermeintlich kleine,
unscheinbare Dinge wie
Ampelanlagen und Fluchtwege.
Nothing without
Engineering
57. Verkehrswesen:
Ampelanlage,
an fast jeder Kreuzung
Konstruktiver Ingenieurbau:
Mehrzweck Arena,
Gelsenkirchen
Foto: Jochen Helle für Assmann Beraten + Planen GmbH, Dortmund
Foto: www.berndwichmann.de