Tut 0121Team 115

Yunzhe “Calvin” LiuGaurav KishoreFeiyu “Charles” RenRuihe “Bolt” ZhangWenjie “Jennifer” ZhuAzwad-Ur-Rahman

Yunzhe Liu

Prezi. (November, 2012). Lord of Flies by: William Golding. [Online]. Available:https://prezi.com/cgcntcsagllf/lord-of-the-flies-by-william-golding/

Main Statement

● Our client, Mr. Steve Janes, required a support system for a totem pole.

● After designing to fulfill objectives, we realized that simplicity and designing for assembly played a larger role in our design process than we expected.

● Ultimately, we decided on the “Hollow Section Support System” as the solution to this problem.

Yunzhe Liu

Keyword Summary of Sub-Statements

1. Analysis of the project requirements(Wenjie Zhu)

2. Detailed description of the design(Gaurav Kishore)

3. Implementation section(Feiyu Ren)

4. External factors analysis(Ruihe Zhang)

Yunzhe Liu

Background / Content:

Problem Statement:● Client cut the totem pole down by

mistake● Client needs something to support

the totem pole ● Support system should not be higher

than 12 feet● Support should have a high durability● A concrete base is available for use

Yunzhe Liu

Underground Concrete Base

30 ft in height

bot diameter 21”

top diameter 16”

Functions Primary function● Hold the totem pole upright

Secondary functions1. Connect the totem pole with

support system.2. Support concentrated weight.3. Stand firmly on the support

surface.

Wenjie Zhu

ObjectivesThree most important objectives:● Temperature resistance

○ -40oC to 40oC

wenjie zhu

Statistics [Online]. Available: http://www.theweathernetwork.com/forecasts/statistics/summary/cl615hmak

wenjie zhu

ObjectivesThree most important objectives:● Temperature resistance

○ -40oC to 40oC● Wind resistance

○ Withstand 135 km/hr wind

wenjie zhu

Statistics [Online]. Available: http://www.theweathernetwork.com/forecasts/statistics/summary/cl615hmak

wenjie zhu

ObjectivesThree most important objectives:● Temperature resistance

○ -40oC to 40oC● Wind resistance

○ Withstand 135 km/hr wind● Durability

○ At least 40 years

wenjie zhu

ObjectivesClient’s request● Cost effective

○ $10,000

● Be around 12 feet

● Minimize damage to totem pole

wenjie zhu

Constraints

● Property Standards

● Municipal Codes

● Ontario’s Environmental Protection Act

● Occupational Health and Safety Act

● Workplace Safety and Insurance Act

wenjie zhu

Software Product Manager by Gopal Shenoy. (August, 2012). Understanding Constraints.[Online]. Available: http://productmanagementtips.com/2012/08/03/understanding-constraints/

Hollow Section Support System● Beam inserted into back of totem

pole, secured with hex lag screws

● Hole is drilled into the concrete base, partially filled with concrete

● Bottom of beam is placed into hole

Gaurav Kishore

How the Design Meets ObjectivesTemperature Resistance:● Based on calculations, steel will not expand/ contract more than 1 cm

Wind Resistance:● Based on calculations, system can withstand 13 kN of force● Max force in service environment is 8kN

Durability:● Steel’s lifespan is around 80 years

Gaurav Kishore

Benefits of Design● Easier to assemble than other designs using a beam

structure● Took up less space and was more reliable than cable

system

Gaurav Kishore

Design for “X”Safety:● Beam inserted into base instead of being bolted● Beam inserted as deep as possible

Durability:● Stainless steel opposed to regular steel

Assembly:● Lag screws instead of C-shaped brackets● Low component count

Gaurav Kishore

Materials and components:

Basic materials and components:● One Rectangular hollow section beam measuring 16 ft long● Twenty-two galvanized hex lag screw● Fast-Setting Concrete Mix

Additional requirements:● A crane service is also required

Feiyu Ren

Detailed implementation requirements:

Steps for implementation:

1. Get all materials ready for assembly.

2. Wear protective gears (e.g. gloves, goggles, etc).

3. Cut a 12 feets high, 4 inches wide, 6 inches deep rectangular section using the electric circular saw.

4. Remove the section by removing one thick strip at a time.

Feiyu Ren

5. Insert the beam into the removed section of the totem pole. Insert two screws connecting the beam and totem pole so that each screw is placed 0.75” from the top and 1” from either side of the beam. This ensures about 1.25” between the centers of the screws horizontally.

Continue to insert pairs of screws spaced identically but placed 14.25” below the previous set of screws (measured centre to centre) until there are 11 pairs of screws. When drilling, be careful not to fracture the wood since it is dry and dead.

Feiyu Ren

6. Drill a hole into the concrete base measuring 5” by 7” and 4’ deep. (Slightly larger than the beam dimensions (See Figure 4.3)

7. Fill 3/4 of the hole with dry mix, soak with water.

8. Use a crane to lift the totem pole and then slowly lower it to insert the beam into the hole.

9. Hold the crane in place until the cement sets and dries (approximately 1 hr)

Economics● Rectangular hollow section beam: $738 (shipping included)● Twenty-two galvanized hex lag screw $4.67 × 22 = $103● Three 50lb. Fast-Setting Concrete Mix $4.98 × 3= $15● Crane service

Disposal cost: $4.00

Total capital cost: $859

Feiyu Ren

Regulations● Accessory Building &

Structures - City of Pickering Zoning By-Laws:

○ Totem pole must be set up at a required distance.

○ Not worry too much.

Ruihe Zhang

○ Structure higher than 1.8m must be placed 1.0m from neighboring building.

Regulations● Occupational Health and Safety Act 150 - 156:

a. Crane operator must be licensed before work.b. Client needs to inspect crane operator’s license before

implementation.c. To ensure workplace safety.

Ruihe Zhang

Government of Saskatchewan. (Dec, 1996). Occupational Health and Safety Regulations, 1996. [Online]. Available:http://www.qp.gov.sk.ca/documents/English/Regulations/Regulations/O1-1R1.pdf

LifecycleRuihe Zhang

Upstream

Operatio

n

Downs

tream

Lifecycle● Upstream● Mainly about raw material

extraction● Beam and Screw:

a. Plain carbon steelb. High-quality carbon steel c. Low alloy steel

● Concrete:a. Cement (11%)b. Water (16%) & air (6%)c. Sand (26%) and small d. crushed stone (41%)

● Gasoline:a. Fossil fuel

Ruihe Zhang

Bebon International. (2013). 1025 Round Bars. [Online]. Available:http://www.round-bar.com/Carbon-steel-bar/1025-round-bars.html

Portland Cement Association. (2015). How concrete is Made[Online]. Available: http://www.cement.org/cement-concrete-basics/how-concrete-is-made

Lifecycle

● Input:● Transportation

○ Gasoline ○ Packaging material○ Labour

● Assembly○ Electricity

■ Drilling & cutting○ Labour○ Cement & Aggregate

■ Preparing concrete○ Beam and screws

■ Setting up supporting system

Ruihe Zhang

● Output:○ CO2, NO2

■ from burning gasoline○ Noise ○ Solid waste

■ packaging material waste, waste wood, waste steel

○ Dust■ Concrete preparation, wood

cutting

● Operation

Lifecycle

● Input:○ Labour○ Electricity○ Gasoline○ Heat

■ Incineration of waste○ Sand and soil

■ Landfill

● Output:○ Recyclable and non-recycle

materials○ Heat○ CO2, NO2○ Dust

Ruihe Zhang

● Downstream

Human Factor● Physical Level:● Design the screw holes’ pattern with the

location convenient for workers to drill.● “Salient body-part hypothesis”:

○ consider human bodies’ structure while designing a project

● Psychological Level:● Write a clear and concise implementation

instruction.● Human have a short temporary memory.

Ruihe Zhang

Dreamstime. (2015). Da Vinci Body Sketch. [Online]. Available:http://www.dreamstime.com/stock-photos-da-vinci-human-body-sketch-image23436263

Therefore statement Azwad-Ur-Rahman

So, in conclusion we can say that the “Hollow Section Support System” is our final proposed design since● It meets the client’s need● Durable● Wind and temperature resistant● Complies with the client’s proposed budget● Requires very few simple components and tools for assembly● Requires very few modifications to the totem pole

Since these advantages ensures an effective solution to our client’s need we chose this design as our final design

Key recommendation(s): Azwad-Ur-Rahman

The following are some key recommendations for our client.1. Maintain the steel components of the design.

a. Apply rust coating occasionally2. Take extra precautions during the construction of this design since it

requires the usage of power toolsa. Wear protection while digging a hole in the concrete base and cutting

a hollow section in the totem pole b. Cut the hollow section carefully to avoid fracturing or splitting

3. Use the right components to ensure the stability of this designa. Wrong screws won’t support the weight of the totem pole

Take-away statement Azwad-Ur-Rahman

A simple but best solution must have the following features● Budget effective● Have very few components● Easy to set up● Must meet with the client’s need

‘Hollow Section Support System’ is ● A solution within the client’s budget● Requires very few components● Very simple to set up so the client can easily do it himself.● Meets with the client’s need of a support for his totem pole

So, we can say that the ‘Hollow Section Support System’ is the simplest but best solution to meet our client’s need. Now, after going through the Final Design Specification the client can proceed with the implementation of the main design.