http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_brid/cub_brid_lesson04.xmllessontext/xmlIntegrated Teaching and Leaning Program and Laboratory, aggregatebridgebrittleconcreteconstructionductileforcematerialsteelstrainstrength of materialsstressstructureBrittleCementCompressive strengthConcreteDuctileEngineerIron oreMemberModulus of elasticity (E)Reinforced concreteSteelStrainStressTensile strength

Students learn about the variety of materials used by engineers in the design and construction of modern bridges. They also find out about the material properties important to bridge construction and consider the advantages and disadvantages of steel and concrete as common bridge-building materials to handle compressive and tensile forces.

When designing structures such as bridges, engineers carefully choose the materials by anticipating the forces the materials (the structural components) are expected to experience during their lifetimes. Usually, ductile materials such as steel, aluminum and other metals are used for components that experience tensile loads. Brittle materials such as concrete, ceramics and glass are used for components that experience compressive loads.List several common materials used the design and construction of structures.Describe several factors that engineers consider when selecting materials for the design of a bridge.Explain the advantages and disadvantages of common materials used in engineering structures (steel and concrete).20TeachEngineering.orgJonathan S. GoodeJoe FriedrichsenNatalie MachDenali LanderChristopher ValentiDenise W. CarlsonMalinda Schaefer Zarskehttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsworksheet.dochttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsworksheet.pdfhttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsworksheetas.dochttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsworksheetas.pdfhttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsmathworksheet.dochttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsmathworksheet.pdfhttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsmathworksheetas.dochttp://www.teachengineering.org/collection/cub_/lessons/cub_brid/cub_brid_lesson04_strengthofmatlsmathworksheetas.pdfACI Committee 318. Building Code Requirements for Structural Concrete (ACI 318-02) and Commentary (ACI 318R-02): An ACI Standard. American Concrete Institute: Farmington Hills, MI, 2002.AISC Committee on Manuals and Textbooks. Manual of Steel Construction: Load and Resistance Factor Design, Third Edition. American Institute of Steel Construction, 2001.http://www.howstuffworks.com/iron.htmhttp://www.epa.gov/ttn/chief/old/ap42/ch11/s12/reference/ref_05c11s12_2001.pdfhttp://www.cement.org/basics/concretebasics_classroom.asphttp://www.dictionary.comhttp://www.ecosystemsnepal.com/wire.phphttp://www.cement.org/basics/concretebasics_faqs.aspHibbeler, R.C. Mechanics of Materials, Third Edition. Prentice Hall: Upper Saddle River, NJ, 1997.Nilson, Arthur H. Design of Concrete Structures, Twelfth Edition. WCB McGraw-Hill: Boston, MA, 1997.http://www.cement.org/S11417ADInternational_Technology_Education_Association-ITEA_STL_StandardsTechnologyI. Buildings generally contain a variety of subsystems.68S1141740International_Technology_Education_Association-ITEA_STL_StandardsTechnologyG. Requirements for design are made up of criteria and constraints.68S11424D2ColoradoSciencea. Predict and evaluate the movement of an object by examining the forces applied to it 88S1142760ColoradoMathd. Use proportional reasoning to convert among measures including dimensional analysis88S1142658ColoradoMatha. Add, subtract, multiply and divide rational numbers including integers, positive and negative fractions and decimals 88United StatesCopyright 2012 - Integrated Teaching and Leaning Program and Laboratory, University of Colorado at Boulderhttp://www.teachengineering.org/policy_ipp.phphttp://www.teachengineering.org/2011-03-308Teacher