Lab 10: Boom Construction Competition

EG1003 Section F1Date of Experiment: November 12th, 2014

Date Due: November 16th, 2014D’Asia Fleming, Tia Moore, Tyler Simon

Overview

• Experimental Objective• Introduction• Background Information• Materials• Procedure• Data/Observation• Results• Conclusion

Experimental Objective

• Design and construct boom• Enter boom in competition against other booms• Learn how booms are used and factors

considers while designing• Create a boom that extends 1.5 meters from the

edge of the anchor

Introduction

• Booms lift and move heavy loads– Loads even heavier than the actual boom

• Some examples of booms– Cantilever Boom– Rotating Boom– Telescoping Forklift Boom– Architecture Boom

Figure 1: Queensboro Bridge (double cantilever)

Background Information

• When constructing a boom engineers must be aware of stress and strain

• Stress is the external force acting upon an object

• Strain is the measure of deformation cause by stress

Background Information

• There are three types of stresses:

Materials

• 2 Thick Dowels (7/16 in. x 48 in.)• 2 Thin Dowels (5/16 in. x 48 in.)• 6 Bamboo Skewers (12 in.)• Cellophane Tape• Kevlar String

Procedure

• Sketch design of boom• Collect materials • Carved 2 wholes into 1 thick dowel• Cut 2 thin dowels in half• Tape the 2 thin dowels together• Connect Kevlar string to the thick dowel• Ask TA weigh boom• Calculate boom weight and design ratio

Procedure

Figure 2: Carving out hole in the thick dowel

Figure 3: Finished hole in thick dowel

Procedure

Figure 4: Formula used to calculate the weight ratio

Figure 5: Formula used to find the design ratio

Data/ObservationBoom Construction Competition

Section DateF1 11/12/2014

Boom Wt. Boom Length Anchor Time Wt. Held Meriam, Michaela, Ashley

245.00 g 1.50 m 31.00 s 222.00 g   UnweightedRatio: 0.91   Weighted

Ratio: 0.89   Rank: 2  

Lucindia, Giselle, Anisa

252.00 g 1.50 m 120.00 s 357.00 g   UnweightedRatio: 1.42   Weighted

Ratio: 0.57   Rank: 4  

Ciarra, Alexia, Leane

241.00 g 1.50 m 70.00 s 332.00 g   UnweightedRatio: 1.38   Weighted

Ratio: 0.83   Rank: 3  

Tia, D'Asia, Tyler

273.00 g 1.45 m 120.00 s 0.00 g   UnweightedRatio: 0.00   Weighted

Ratio: 0.00   Rank: 5  

Delisa, Veronica, Ayshia

215.00 g 1.53 m 10.00 s 212.00 g   UnweightedRatio: 0.99   Weighted

Ratio: 1.51   Rank: 1  

Anna, Tahamina, Brianna

222.00 g 0.00 m 0.00 s 0.00 g   UnweightedRatio: 0.00   Weighted

Ratio: 0.00   Rank: 5  

Results

• Our boom was tied in 5th place.– Weight of boom: 273.000g– Anchor time 120 sec.– Length 1.45 m

Figure 6: Final boom design

Conclusion

• Boom came in 5th place• Future improvements include:

- Build a stronger boom- Test trial the design before entering it into

the competition- Plan out time

Lab 10: Boom Construction Competition

EG1003 Section F1Date of Experiment: November 12th, 2014

Date Due: November 16th, 2014D’Asia Fleming, Tia Moore, Tyler Simon