Group Homework 2 - On The Beam

 Problem Statement:

Design and build a reinforced concrete beam that will support the members of your group under the two loading conditions. Beam length must be 10 ft.

 Load conditions:

1. Simply supported 10ft. span, all group members occupy middle 6 ft of beam

 

2. Single overhang beam, 7 ft back span, 3 ft. cantilever, two group members within 2 ft of cantilever end, other group members spaced evenly over middle 4 ft of back span.

Beam must be stable as it supports the members of your group standing on top. Group members must physically load the beam from above for a continuous five minutes for each load condition.

 Evaluation Considerations:

• Beam weight - beam must be easily and safely transportable by group members
• Ratio of supported weight to beam weight - the higher the better
• Maximum deflection - the smaller the better
• Lateral stability - beam must not bend laterally or twist
• Aesthetics - it should be "attractive"
• Economy - the least costly the better
• Design - Beam must be designed to support the combined weights of the group members, under each load condition, in addition to it's own weight. Safety Factor may be determined by the group, however it must exceed 1.0. Calculations should be correct. Minimum rebar cover requirements are waived for this test.

 Report:

Prepare a short professional looking report with the following:

• Design Calculations
• Mix proportions and quantities
• Beam weight, Combined group weight
• Photo documentation - include one photo of each construction and testing phase
• Formwork
• Mixing
• Placing
• Curing
• Form stripping
• Testing