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Construction Engineering

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Mechanical engineers design heating, ventilation, and air conditioning systems (HVAC), elevators, escalators, and other types of mechanical equipment used in ... – PowerPoint PPT presentation

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Title: Construction Engineering


1
Chapter 11
  • Construction Engineering

2
Objectives
  • After reading the chapter and reviewing the
    materials presented the students will be able
    to
  • Identify factors common to engineering design
    problems
  • Describe steps of the engineering process
  • Give examples of want is done during each step of
    the engineering process

3
What is Construction Engineering?
  • Construction engineering is a process for
    developing and evaluating solutions to
    construction problems.
  • Engineers are licensed professionals who apply
    principles of science and mathematics to design
    various structures, machines, or systems.
  • Civil engineers design highways, dams, water
    supply systems, and sewage systems.
  • Structural engineers design the framework of
    buildings, bridges, towers, and other structures.
  • Transportation engineers are responsible for the
    overall design of transportation systems.
  • Electrical engineers design electrical utility
    systems and electrical wiring and lighting for
    buildings and other projects.
  • Mechanical engineers design heating, ventilation,
    and air conditioning systems (HVAC), elevators,
    escalators, and other types of mechanical
    equipment used in construction projects.

4
Factors Common to All Engineering Design Problems
  • Like architects, engineers focus on five factors
    of the design process function, strength,
    materials, cost, and appearance.
  • Function A design is functional if it does what
    it is intended to do.
  • Strength Engineers must determine the strength
    needed for a constructed project to do its job.
    For example, a bridge must support the load it is
    designed to carry.
  • Materials Engineers select materials based on
    their strength, weather and fire resistance,
    cost, and appearance.
  • Costs Engineers must consider the cost of the
    design alternatives. Costs are affected by site
    choice, structure design, construction methods,
    life expectancy of the structure, and budget.
  • Appearance Designs that are functional, cost
    effective, and attractive are preferred to those
    that are only functional and cost effective.

5
The Engineering Process
  • Step 1 Identify the Problem This is time to
    observe, investigate, and gather information. The
    engineers should also know what has not worked in
    the past on similar designs.
  • Step 2 Generate Preliminary Ideas Engineers
    may brainstorm with other engineers to create
    preliminary ideas. These ideas are often recorded
    as rough sketches or lists.
  • Step 3 Refine Ideas More details are added and
    sketches are improved. Several preliminary ideas
    may be integrated.
  • Step 4 Analyze Ideas At least four types of
    analysis are done for each idea. Functional
    Analysis Determines how well each refined idea
    meets the needs of the project. Site Analysis
    Site analysis studies the suitability of various
    sites chosen for a construction project.
    Structural Analysis focuses on the strength of
    structures in the building project. Cost
    Analysis During functional analysis of each plan
    alternative, initial cost estimates are prepared.

6
The Engineering Process
  • Step 5 Select a Design Selected designs are
    brought to life using drawings, models,
    photographs, charts, and graphs. Advantages,
    disadvantages, and cost estimates are also
    presented to the client.
  • Step 6 Prepare Construction Documents Detailed
    drawings and specifications are prepared for each
    element of the design. Specifications are written
    for the quality of materials and workmanship
    needed for the project. Together the drawings and
    specifications are called construction documents.
  • Step 7 Implement the Design Implementation of
    the design includes all on site work needed to
    complete the project. When the construction
    documents are complete, contractors are selected
    and the work begins. On large projects, the owner
    is responsible for making payments at the end of
    each major phase of the project.

7
Summary
  • Construction engineering is a process for
    developing and evaluating solutions to
    construction problems.
  • Engineers are licensed professionals who apply
    principles of science and mathematics to design
    various structures, machines, or systems.
  • Civil engineers design highways, dams, water
    supply systems, and sewage systems.
  • Electrical engineers design electrical utility
    systems and electrical wiring and lighting for
    buildings and other projects.
  • Mechanical engineers design heating, ventilation,
    and air conditioning systems (HVAC), elevators,
    escalators, and other types of mechanical
    equipment used in construction projects.
  • Like architects, engineers focus on five factors
    of the design process function, strength,
    materials, cost, and appearance.
  • The Engineering Process
  • Step 1 Identify the Problem This is time to
    observe, investigate, and gather information.
  • Step 2 Generate Preliminary Ideas These ideas
    are often recorded as rough sketches or lists.
  • Step 3 Refine Ideas More details are added and
    sketches are improved. Several preliminary ideas
    may be integrated.
  • Step 4 Analyze Ideas At least four types of
    analysis are done for each idea. Functional
    Analysis, Site Analysis, Structural Analysis,
    Cost Analysis.
  • Step 5 Select a Design Selected designs are
    brought to life using drawings, models,
    photographs, charts, and graphs. Advantages,
    disadvantages, and cost estimates are also
    presented to the client.
  • Step 6 Prepare Construction Documents Detailed
    drawings and specifications are prepared for each
    element of the design.
  • Step 7 Implement the Design Implementation of
    the design includes all on site work needed to
    complete the project.

8
Home Work
  • 1. What are the factors of the design process
    that engineers concentrate on?
  • 2. Explain the four types of analysis that are
    done for each idea.
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