Presentation on theme: "CeAnn Chalker firstname.lastname@example.org Towers B & C – 2010-11 CeAnn Chalker email@example.com."— Presentation transcript:
1 CeAnn Chalker firstname.lastname@example.org Towers B & C –CeAnn Chalker
2 DisclaimerThis presentation was prepared using draft rules. There may be some changes in the final copy of the rules. The rules which will be in your Coaches Manual and Student Manuals will be the official rules.
3 TowersStudents will design and build the lightest structure holding the greatest amount of weight.
4 General Rules Only 1 structure entered per team No Impound Testing maximum load 15 kgStudents must wear gogglesTowers must be marked by team so judges can identify themTower is a single structure (no separate or detachable pieces)
5 Towers ConstructionTowers must be made of only wood and bonding glue (any type of glue)No particle board, plywood, beaverboard, or other composite wood are allowed (this includes bamboo and paper)Unlimited laminations by students is allowedNo limit on the cross section size of individual pieces of wood
6 Towers ParametersMust accommodate a loading block that is 5.0cm x 5.0cm x 2.0cm w/a ¼ inch diameter hole in the centerHeight – All parts of the loading block must be a minimum 50.0 cm above the platform (no max.)The base of the Tower must span the testing platform which has a 20.0 cm x 20.0 cm square opening
7 Towers ParametersNo portion of the Tower may extend below the top surface of the testing platformThe Tower may not be braced against the edge of the Test BaseAfter set up, the Tower may only contact the Loading Block and the Test Base
8 Towers Parameters Division B Parameters Division C Parameters The portion of the tower more than 30.0 cm above the test base must pass through an 8.0 cm diameter hole or openingDivision C ParametersThe portion of the tower more than15 cm above the test base must pass through an 8.0 cm diameter hole or opening
9 Towers TestingA chain and bucket will be suspended from the loading blockStructures will be tested by loading sand into the bucket up to 15 kg.Students will be the only ones to handle their structures
10 Towers Testing cont’dStudents may adjust the tower until they begin loading the sandTeams are given 10 minutes to load the sand into the bucket
11 Towers Testing cont’d Sand loading stops – When failure of the tower occursWhen maximum load is supported (15 kg)When the chain comes in contact with the towerWhen any part of the tower extends below the top surface of the Test Base
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