TEAM BUNGEE Cameron James Jacob Camp Ronnie Harris

TEAM BUNGEE Cameron James Jacob Camp Ronnie Harris Jason Mc. Cants EMAP 2006 University of Alabama College of Engineering EMAP Team Bungee 7/19/06

Introduction • Chemical & Biological Engineering Group – Labs by Chris Brazel, Ph. D and Sandra Wood, MSE • Chamber Project Assignment – Design bungee jump attraction for Lake Nicol • Bungee Jump – – Physical & Mathematical Principles Material & Design Considerations for Jump Safety Marketing Approach Economics & Feasibility EMAP Team Bungee 7/19/06 2

Bungee Math – 2 Basic Principles 1) Cord Motion = spring = Hooke’s Law (1660) Cord deformation is proportional to load Force = k x k = spring constant ; x = length 2) Cord Elasticity = Young’s Modulus (1807) Ability of cord to regain its original length Elastic Modulus = Stress/Strain Stress = Load / Cross sectional Area Strain = Extension / Length EMAP Team Bungee 7/19/06 3

Example Mathematics • Unstretched cord 20 meters long with an elasticity of 50% and a spring constant of 20 Newtons/meter can hold what force? Force = (20 N/m) (10 m) = 200 Newtons • Unstretched cord 45 meters long with 75% elasticity holding a 350 N force has what spring constant? 350 N/m= (k) (33. 75 m) so k=10. 37 N/m EMAP Team Bungee 7/19/06 4

Bungee Jump Cord - Materials & Design • • Commercial bungee cord used Designed to user’s standards Elastic strand with rubber core & braided fabric covering 0. 62 inch = 1. 6 cm diameter Cord weighs 14 lbs / 100 ft Stretch factor of 100 to 125% Supports 250 -350 lbs @ 100% 500 -600 jumps/cord typical EMAP Team Bungee 7/19/06 5

Bungee Jump • Typical Tower Design • Anchor into rock cliff or a • • • stand alone structure 100 -150 feet high “Walk the Plank” concept jump over the water Day and night jumps offered EMAP Team Bungee 7/19/06 6

Regulations and Guidelines • North American Bungee Association (NABA) • Operate with a safety factor of 5 – cord and related apparatus designed to carry up to 5 times the max allowed passenger weight • Certified jump masters & trained operators • 4 daily inspections • Allow 5 minutes between jumps for cord to return to original length • Bungee cords replaced weekly (500 -600 jumps) EMAP Team Bungee 7/19/06 7

Safety & Liability Three-way safety system: • Full body harness • Ankle strap system • Contractor Quality Safety Net Limitations • Minimum Age – 18 years • 16 yr with parent signature • Jumpers sign release form • Weight range: 100 -300 lbs • Maximum + 3 Gs EMAP Team Bungee 7/19/06 8

Into the “JAWS” of Death • Additional Thrill Factor • Jumper ”walking the plank” • • sees shark fins circling below Safety net attached to underwater shark apparatus “JAWS” shark emerges to thrill jumper or spectators EMAP Team Bungee 7/19/06 9

Marketing • Population of the city of Tuscaloosa – 80, 000 without UA students – 100, 000 with UA students (Aug – May) – Add 50, 000 for home football games • University & Sports Enthusiasts 18 -65 yrs • Target audience ~65% of Tuscaloosa and State of Alabama population EMAP Team Bungee 7/19/06 10

Jump Pricing • • • $35 per jump $15 for “I Walked the Plank” shirt $10 for a photo of your jump $50 package = jump, shirt, & photo Group rates for university & student organizations (EMAP, Bama. Bound, etc) EMAP Team Bungee 7/19/06 11

“The Plank ” • Open-air restaurant & bar • • • overlooking water Nautical/Pirate Theme Comparable to Treasure Island in Panama City, FL Bungee jump visible from restaurant Separate mock floating ship serves as spectator platform or souvenir/gift shop “Treasure Island” Miniature Golf Course EMAP Team Bungee 7/19/06 12

THE PIRATE “ALABAMA” http: //www. sonofthesouth. net/lee. Foundation/civil-war/1862/pirate-alabama. htm EMAP Team Bungee 7/19/06 13

Fixed/Startup Costs • Cantilever Tower • Tower Foundation • Installation • Tower Operating Equipment • Permits and Liability Insurance – Annual Renewal – Quarterly Inspection • License Fee • Safety Equipment • Mechanical Shark Apparatus $95, 000 $10, 000 $6, 000 $9, 000 $30, 000 $1, 000 $500 (x 4) $5, 000 $2, 000 $15, 000 Estimated Total = $175, 000 EMAP Team Bungee 7/19/06 14

Weekly Operational Costs • Staff (2 shifts, 12 hours/day, 4 days/week) • • • – Jump Master – Jump Operator – Landing/Recovery Operator – Registration/Gift Shop Clerk Daily Maintenance / Inspection Replacement Cords (1/week) Power Consumption (motors, flood lights, etc) $1, 000 $500 $350 $1, 000 $100 Estimated Total = $4, 000 EMAP Team Bungee 7/19/06 15

In Review… • Bungee jump could be a stand-alone project • • • operational in 3 -4 months Can be located on lake, riverfront or land Will attract the student population of Tuscaloosa, surrounding county & state Great marketing scheme for the city – – 1862 Rebel Pirate Ship “Alabama” “The Plank” Restaurant & Bar ”I Walked The Plank” Souvenirs “Treasure Island” Putt-Putt Golf EMAP Team Bungee 7/19/06 16

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Biomechanics virtual modeling = http: //www. lifemodeler. com/LM_Manual/T_bungee. htm EMAP Team Bungee 7/19/06 18