2016年8月3日 · Activity: Balsa Wood Bridge (ABC -style) Introduction Bridges come in many different shapes and sizes, and can be made out of an assortment of materials. A sample of some of the different types of bridges is shown below. The type of bridge and material used is dependent on many different factors: location, span length, type of traffic, etc.

Each ES 101 student group will design a truss bridge that will be made of balsa wood and wood glue. To aid in the exploration for possible truss design alternatives, we will model and analyze the trusses using an online software program called ForceEffect. Each student will start with one individual design that they model and analyze.

balsa wood. Make two identical trusses using balsa wood and glue and allow to dry. Once dry, add connecting pieces to give your bridge width and form. Please make sure the final design conforms to the contest dimensions and that you can pass a 5 cm square block through the final bridge along the bridge bed –

preservatives has extended the life of wood used in exposed bridge applications. Using modem application techniques and preservative chemicals, wood can now be effectively protected from deterioration for periods of 50 years or longer.

When learning about structural engineering, the building of balsa-wood bridges can be a key activity in any engineering class. You can find these scaled bridges made out of balsa wood, lollypop sticks, or even spaghetti (or whatever else is on hand).

Objective: Construct and test a model balsa wood bridge based on the specifications detailed below. Bridge Design: 1. Bridge Type: Students may choose to construct any type of bridge (beam bridge, truss bridge, etc.) as long as loading specifications can be met. 2. Technical Drawings: Technical drawings of bridge must be provided the day of ...

Pitsco’s Balsa Bridges activity centers around the design and construction of a bridge from 1/8" x 1/8" balsa wood. Typically, the bridge will span between 10" and 18", with a width of about 3". The bridge is tested to the breaking point by applying a load to a wood block placed on the roadbed of the bridge. Activities and Related Products at

2017年6月3日 · For this competition each group must construct a balsa wood bridge with multiple components that need to be erected prior to loading. They also have to present a skit about a story of their bridge, its construction, and uses. Provided Materials: 1. Balsa Wood (1/8” square rods, 1/16” x 3” sheets) 2. Hot glue gun and hot glue sticks 3 ...

The major choice you have to make in the design of your bridge is what truss you will use. A "truss" is simply what you see looking at the side of a bridge. I have already shown you two trusses in the illustrations above on this page. Here are examples Howe Pratt Warren

How to Make a Truss Bridge From Balsa Wood | ehow Determine the amount of balsa wood required for your bridge by measuring your designs with a ruler. Measure two pieces of 1/8-inch balsa wood for the base of the bridge.

Experimentally determine the smallest deflection to load ratio (∆y/P) for a given length of four different beam designs of balsa wood. Make a connection between the results for different beam designs and the equation that describes how deflection varies with the geometry of the beam.

resource by permitting the manufacture of large wood structural elements from smaller lumber sizes. Technological advances in laminating over the past four decades have further increased the suitability and performance of wood for modern highway bridge applications. National Educators' Workshop, Update 93 ,1994

Compression and tension in truss members, how they applied to balsa wood structures, and how to make a strong wood joint were also discussed. Students were allowed a number of class periods to design a bridge of their choice using the West Point Bridge Design software.

your own truss, make sure you plug it into the Bridge Designer. This fun little program will show you how the load is spread throughout your truss. This is extremely valuable information for you as the designer. If you do not know how to use the Bridge Designer, see my …

•Try out different truss design •Look around your environment for idea •Use Elmer's or wood glue (CA glue dr ] too fast)

The objective of this truss design competition is for a team of two students to design and build a balsa wood truss bridge which will span 36 inches and hold a 24 lb point load . The span length, amount of the load, and location of the load vary each …

This paper describes a balsa wood truss design competition used in a Statics & Mechanics course at NMU to motivate the learning of the concepts of static equilibrium and truss analysis.

This report includes information on the design, construction, and field performance of the bridge. Field performance was monitored for approximately 5 years, beginning shortly after bridge construction. Performance monitoring involved collecting and evaluating data relative to wood moisture content, force level of stressing bars, behavior under ...

• A maximum of 10 pieces of balsa wood (24" x 1/8" x 1/8") can be used to construct the bridge. • Lamination is not allowed. • Using glue to reinforce joints is not al-lowed. • The superstructure must be above the roadway. • There must be an opening in the center of the roadbed large enough for the testing device to attach to the bridge.

resource by permitting the manufacture of large wood structural elements from smaller lumber sizes. Technological advances in laminating over the past four decades have further increased the suitability and performance of wood for modern highway bridge applications.