Stantec

1
Civilized Math

• By
• Stantec
• Ned Araujo, Sr. Project Manager
• October 8, 2007
• Chaffey High School Ontario, CA

2
Introduction

• What is Civil Engineering?

3
Personal Background

• Mr. Araujo
• Professional Engineer - P.E.
• Military and civilian engineering background with
  field experience that adds to his ability to
  visualize unique design situations.
• Extensive experience in the design of storm
  drains for city agencies and the Riverside County
  Flood Control and Water Conservation District.
• Extensive experience in the design and management
  of grading, storm drains, street, sewer, and
  water projects for commercial industrial and
  residential developments for municipalities.

• Education
• High School Colegio Lourenco Filho, Brazil
• High School Mayfair High
• Lakewood, California
• AS (Associate of Science) Cerritos Community
  College
• BS (Bachelor of Science) Civil Engineering,
  California Polytechnic University, Pomona
• Chemical, Biological, Radiological Team Training,
  U.S. Navy Construction Battalion, Port Hueneme,
  California
• Naval Construction Training Center-Engineering
  Aid, U.S. Navy Construction Battalion, Port
  Hueneme, California

4

• Practice Areas
• Architecture, Interior Design, and Facilities
  Planning Operations
• Strategic Management
• Buildings Engineering
• Urban Land Engineering
• Planning Landscape Architecture
• Surveys/Geomatics
• Quality Control/Assurance
• Environmental Infrastructure
• Environmental Management
• Transportation
• Infrastructure Management Pavement
  Engineering
• Bio/Pharmaceuticals
• Manufacturing/Industrial
• Energy Resources
• Program Project Management

• Stantec, founded in 1954, provides professional
  design and consulting services in planning,
  engineering, architecture, surveying, economics,
  and project management. Continually striving to
  balance economic, environmental, and social
  responsibilities, we are recognized as a
  world-class leader and innovator in the delivery
  of sustainable solutions. We support public and
  private sector clients in a diverse range of
  markets in the infrastructure and facilities
  sector at every stage, from initial concept and
  financial feasibility to project completion and
  beyond.
• In simple terms, the world of Stantec is the
  water we drink, the roadways we travel, the
  buildings we visit, the industries in which we
  work, and the neighborhoods we call home.
• Our services are offered through over 6,500
  employees operating out of more than 100
  locations in North America.
• Stantec is One Team providing Infinite Solutions.

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Interesting Facts

• Company Slogan
• One Team. Infinite Solutions
• Year Founded 1954
• Gross Revenue 816.1 Million (Canadian)
• Employees Over 6,500
• Locations Over 100 offices across North America
• Headquarters Edmonton, Alberta, Canada

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Math in the Civil Engineering Field

• The Civil Engineering Field uses Mathematics from
  basic arithmetic to complex calculus equations.
• Examples

• Estimating Cost
• Estimating Areas
• Estimating Volumes
• Solving Complex Hydraulics (Fluids such as water)
  problems where no direct solution is achievable

7
Vocabulary/Formulas(For todays Demo)

• New Vocabulary
• Channel
• Hydraulics
• Disturbance
• Slope
• Spoils

Formulas
Ratio and Proportion Slope in Civil Engineering
is shown as the horizontal change per unit of
Vertical change. Therefore, a 21 slope has 2
units horizontally 1 unit vertically
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What is a Channel?
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What can happen?

• 100 year storm. These vehicles were swept
  into a wash near the intersection of Boulder
  Highway and Sahara Avenue in Las Vegas during the
  "100 year storm" flood event on July 8, 1999, so
  called because of the one percent chance that an
  event this large would occur in any year. The
  storm just missed qualifying as one of the top
  ten storms for precipitation in a 24-hour period
  in Las Vegas since 1937 when official record
  keeping began.
• Photo by Jim Laurie, courtesy of the Las Vegas
  Review Journal.

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California Desert Channels
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Engineered Channel
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(No Transcript)
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Example
Your client has a project in the California
Mojave Desert. You decide that you will
construct flood channels to convey water runoff
to protect the development. If the channels are
a minimum of 5-feet deep, have a base of 10 feet,
and have 41 side slopes, what is the minimum
width of the channel surface disturbance?

• To solve, we need to
• Make simplifying assumptions
• Make a sketch to help with the problem solving
• Break the problem down to 3 components to
  determine the channel width.
• The left channel bank will have a disturbance of
  5 x 4 20
• The channel bottom will have a disturbance of 10
  (given)
• The right channel bank will have a disturbance
  of 5 x 4 20 (notice symmetry)
• The total channel disturbance is given by the sum
  of all 3 parts 20 10 20 50

14
Guided Practice
What is the minimum disturbance considering the
spoils assuming that they are placed on one side
of the channel bank and have the same geometrical
shape as the channel?
The steps used to solve this problem are exactly
the same as the example.
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Independent Practice
As a practice exercise, lets say that we need to
minimize the disturbance by steepening the side
slopes of the channel. This may require channel
bank protection and may increase the cost of the
channel. What would the total channel disturbance
be if the depth of the channel and spoils is to
be increased to 6 feet and the side slopes
steepened to 31. While everyone is working
on this, I need two volunteers to solve the
problems on the board.

• To solve, we need to
• Make simplifying assumptions
• Make a sketch to help with the problem solving
• Break the problem down to 3 components to
  determine the channel width.
• The left channel bank will have a disturbance of
  5 x 4 20
• The channel bottom will have a disturbance of 10
  (given)
• The right channel bank will have a disturbance
  of 5 x 4 20 (notice symmetry)
• The total channel disturbance is given by the sum
  of all 3 parts 20 10 20 50

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Thank You

• Questions?
• Final thoughts
• Comments