What bridge design holds weight? – garrett', I’m building a balsa bridge that needs to span 36″. it only needs to hold 25lbs centered. the criteria for winning is to hold 25lbs with the most efficiency. my initial thought was to make an arch super and sub structure that overlaps on the main chord, with warren or k webbing(can post a sketch if it helps).. Video: build model bridge – garrett' bridges: resources, The presentation is over an hour long. he shows how to build a bridge from scratch. he is gearing his video towards the chicago regional contest in particular. the concepts, however, apply to virtually all model bridge building projects. this is a great companion video to my 5 steps to building a model bridge ebook.. Balsa/basswood bridge examples – garrett' bridges, Here are the video results from the bates tech balsa wood bridge competition 2011. this simple video footage of the competition makes for a good learning opportunity. this video includes a variety of designs that are interesting to observe if you are looking to build a balsa wood bridge..
How design balsa bridge & test computer, Building simplified balsa wood model bridge learn issues important design real civil engineering projects. types trusses importance triangular supports, learn inevitable trade-offs optimization problems arise scarce materials. Balsa wood bridge : 17 steps - instructables, Balsa wood bridge: instruction set teach design construct bridge balsa wood. fun, intriguing project entertain individual hours. high school college science engineering classes …. Efficiency score – garrett' bridges: resources , The balsa bridge’ mass 0.0081kg rising starr bridge’ mass 11g. balsa bridge’ maximum load mass 13kg, rising starr bridge’ maximum load mass 15kg. , 13(0.35)/(350*0.0081) ≤ balsa bridge relative efficiency score ≤ 13(0.45)/(350*0.0081).
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