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Bridge Construction Powerpoint Template

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Bridge Construction

Transcript: Does the construction of a bridge determine its overall strength? Place two of the cups by each other, make sure there is space in between the cups, like the size of your fist. Place a sheet of paper on top of the cups. Then place the third cup on the top of the sheet, placing it right in the middle/between the two cups. Observe what happens. Repeat the process, but this time fold the second sheet of paper as if to be making a paper fan. Determine which "bridge" provides the best support? Begin placing pennies in the cup on top of the folding paper. How much weight can it support? When force or weight can be spread out or directed so that it is shared with many support structures, the form becomes stronger. The fan fold spreads the force of the cup filled with pennies, allowing more of the paper to be used in the support of the cup. Scientists know that the size and quantity of the folds are important. The larger and fewer number of folds, the stronger the paper. The smaller and greater number of folds, the weaker the paper. Question Why It Works Two pieces of paper Three cups 12 Pennies What To Do Bridge Construction Presented by Perla A. Castillo Materials Needed

Bridge Construction

Transcript: END sketch of bridge golden gate bridge is the most known bridge in San Francisco we want a triangle bridge because we thought it would be stronger then anything else and its most common design. The famous golden gate bridge as youy can see in the picture its base is a triangle ARCH BRIDGE BEAM BRIDGE Geocentre sticker BY; Madison O'dell an Samantha J due march 6 2017 grade 7 miss ledwell examples * ARCH BRIDGE *SUSPENSION BRIDGE *BEAM BRIDGE measurements width~ 11 length~79 height~10 COMMON BRIDGES what is a bridge IT'S THE END OF THE BRIGE FOR U BUDDY LOL ! MY IDEA The Sydney Harbour Bridge is a steel through arch bridge across Sydney Harbour that carries rail, bicycle, and traffic between the Sydney central business district and the North Shore. An idea of the kind of bridge A bridge is a structure that helps you get over a obstacle like river,valleys or roads. and building a bridge can be very difficult with the measurements and weight. Donghai Bridge is a Chinese bridge counted among the longest cross-sea bridges in the world . crushed bridge Suspension BRIDGE Bridge Construction

bridge construction

Transcript: Its length is 36m It was completed in 1883 We also could have used more suspension like this one Its length is 12900m btw the dimensions are 10 by 8 The first bridge we researched was the London Bridge. Its width is 26m We then started layering over planks of sticks for the main base The second bridge we researched was the Brooklyn Bridge in New York. The last bridge we researched was the Confederation Bridge that connects New Brunswick to PEI. or we could have layered the base some more like this Then we put the base together What we could have done to improve the bridge is that we could have built cross braces like this one Then we built the walls and put the top on bridge construction It was opened in 1824 First we took popsicle sticks and layered them to make the start of the base Its width is 32m Me and Tyler entered the St. John's bridge building competition this year at the Geo Centre. In this prezi we will explain the construction process the bridge went through before it was finished. Its length is 269m Its length is 1825m

Bridge Construction

Transcript: Bridge Construction 2021-2022 A Hands Together Student perished when the flood waters rose too high on her way to school. It became clear a bridge was needed. STEP 1 2020 Early 2021 Holy Family Shipping Container arrives containing food and school supplies STEP 2 STEP 3 Late 2021 Bridge Construction Starts Using the shipping container provided about Family, Hands Together employed over 20 Haitian works to create the bridge. STEP 4 Bridge Construction is Finished Thank you Holy Family! 2022

Bridge Construction

Transcript: Engineering a Bridge Tension Newtons Newtons Length: 70cm Triangle Trigonometric Calculations Amount of Mass 1400g Triangle is the most rigid 10 straws, 10cm gap The upper part of the ruler is pushed closer together, compression Compression T1 Square Girder Bridge Data Square T2 Bridge Images Straw Bridge Experiment 4: Wooden Girder Bridge Pentagon Experiment: Tension and Compression Experiment 3: Building a Girder Bridge Pentagon Number of Straws 9 The process of complex design Model Ratio 280 Tension 2Tsin(60)-mg=0 Tension=.283N Hexagon The lower part of the ruler is pulled farther apart, tension L-Shape Bridge Image T1 Cost: $168.30 Girder Data T1 T2 N Experiment 2: Testing Girders Experiment 1: Bending a Beam Triangle T2

Bridge Construction

Transcript: Introduction to Bridge Construction History of Bridge Engineering The history of bridge engineering dates back to ancient civilizations, with notable examples like the Roman aqueducts. Advances in materials and techniques over centuries have transformed bridge design, allowing for longer spans and greater durability. Types of Bridges Design Principles Bridges can be categorized into several types, including beam, arch, truss, suspension, and cable-stayed. Each type is suited for different environments and loads, showcasing unique design principles and engineering capabilities. Importance of Bridges in Infrastructure Bridges play a crucial role in infrastructure by providing essential connections for transportation networks. They enhance economic development, facilitate trade, and improve access to services across regions. Load Distribution Materials Used Bridge Construction Load distribution is essential in bridge design as it determines how forces are transferred throughout the structure. Properly calculated load paths ensure that the materials and construction methods can withstand anticipated traffic loads, environmental factors, and dynamic forces. The selection of materials significantly impacts bridge performance, durability, and aesthetics. Common materials include steel for its tensile strength, concrete for compressive strength, and composite materials for their lightweight and corrosion-resistant properties. Safety Standards Safety standards in bridge construction are essential to protect public safety and investment. These standards dictate design protocols, construction methods, and maintenance strategies to ensure that bridges can safely carry projected loads over their planned lifecycle. Techniques and Innovations in Modern Engineering Construction Techniques Traditional Methods Traditional bridge construction methods include arch, beam, and suspension techniques, with masonry and timber often used as primary materials. These methods laid the foundation for modern engineering, emphasizing strength, durability, and aesthetic value in bridge design. Use of Technology Technology in bridge construction encompasses advanced software for design simulations, 3D printing for components, and drones for site inspections. These tools improve accuracy, reduce labor costs, and streamline project timelines, transforming traditional practices. Modern Techniques Modern construction techniques leverage precast concrete, steel fabrications, and modular designs. The use of these innovations not only speeds up the construction process but also enhances safety and structural integrity, adapting bridges to meet contemporary demands. Case Studies and Innovations in Bridge Construction Iconic Bridges Around the World Bridges like the Golden Gate, Tower Bridge, and the Akashi Kaikyō Bridge showcase remarkable engineering. Each has unique features that exemplify cultural significance and architectural innovation, contributing to their status as global icons. Latest Innovations in Bridge Design Recent advancements include the use of smart materials and modular construction techniques. Innovations such as self-healing concrete and the integration of sensors for real-time monitoring are revolutionizing how bridges are designed and maintained, enhancing safety and durability. Environmental Considerations in Construction Today’s bridge projects prioritize sustainability by minimizing environmental impact. Strategies include using recycled materials, implementing erosion control measures, and considering wildlife corridors to preserve local ecosystems during construction.

Bridge Construction

Transcript: Triangle Straw Bridge Construction Square Octagon Kyle Beirne, Paige-Willow Brennan, Erica Lehman Girder Testing Pulling the Brick Bridge Construction Hexagon

Bridge construction

Transcript: The bridge did not withstand the 50 N specified. A more through plan and superior build quality would help improve structural rigidity. The design was kept relatively simple (apart from paper base), allowing ease when building. Initial concepts Triangular cross member throughout the bridge to help distribute the load. A lot of material was used to secure the paper down meaning the cost was high, £83,516. More time planning could have meant more efficient material use. Try not to rely on loads being applied perpendicular to a member without giving additional support. Using an Instron load cell, a vertical force was applied to the highest center point. The force would increase until the the resistive force from the bridge dropped, due to e.g. buckling, twisting or sheared joints. Vertical struts would distribute load throughout the base, where the bridge was strongest Maximum load of 40.9 N. Target of 50 N was not achieved. Poor joint construction caused them to fail under small loads. Strong base meant top strut warped considerably. Increase the length of the bridge past 500mm to allow for slippage. Final design The use of paper in this way still has potential. the use of larger paper sheet or more wedges between the frame and paper would have helped. Structural failure of base and one end of bridge dramatically reduced rigidity. Central strut succeeded in transferring load to base of bridge. Paper wasn't under enough tension to aid strength. Lack of symmetry causes twisting at puts additional stresses on one side of the bridge. Points of failure and success Results and potential improvements for next time Several 'steps' in load initially as joints began to fail. A load capacity of 50 N was required. The bridge would have to be at least 500mm to fit on support struts within load cell. Costs of materials meant there usage had to be kept minimal (no redundant material on bridge). Feasibility: would the design be feasible to construct out of the material provided? Balsa, paper and glue. Several consideration would have to be made whilst designing the bridge Extra length allowed for considerable bending without the bridge falling of its supports. Inclined triangular members at either end to distribute some of the load onto the paper fastenings. Testing to destruction Use papers tensile properties to support the bridge. Strips of paper would be placed on you underside of the bridge, which would be put in tension as the base buckles. Place the top member under compression by arching them upward, hence displacing the applied load in a horizontal direction. Bridge construction Paper covering the base was wrapped around either end.

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