Monday, June 7, 2010

Week 17

Monday- Today Mr.D explained the different tools we can use to cut our popsicle sticks. He explained we have to use saftey goggles and he explained how to use the scroll saw. One problem he had was the popsicle sticks breaking in half. Then i continued to do my orthographic drawings.

Tuesday - Was not Present

Wednesday- Today i put all of my drawings in title blog and then added them to my blog, I then started building our Crane. Today was shortened periods.

Thursday- Today i was not Present. My group started the crane

Friday- Today i was not Present.

Tuesday, June 1, 2010

Week 16

Monday - Today i continued to do my crane on AutoCad , i made my one box and then copy and pasted it, all the way up and then all the way across. I was told the top has to be in triangles so i had to erase the top.

Tuesday - Today i started on the top of my crane doing it in triangle Ibeams. Then i had to add my counter weight in to AutoCad. I am almost finished then i will be able to pick groups.

Wednesday - Today i continued to do my crane on Autocad. I had to make supportbeams for the top of the crane. To do so i had to make to diagonal trusses going to the top part of the crane and then i put triangles within the beams to create extra support

Thursday- Today i added my measurements for the crane. I put measurements for all the neccessary lines that we needed to know. I then started my orthographic drawings. Tommorrow i will have to finish those and then add measurements to them

Friday - Today i continued on my orthographic drawing, i still have not finished, i need to do all three views of the base and the top of the crane. It is very difficult and time consuming.

Monday, May 31, 2010

Group Problem Solving

Principles -
  • Dont jump to solutions bedfore defining the problem.
  • solve problems close to the source
  • attend to the interests of all stake holders
  • Team-based knowledge driving systems change

Skills-

  • Brainstorming
  • faciliation
  • Process improvement

Brainstorming Guidelines-

  • Identify a recorder and facilitator (can be the same person)
    Clarify the issue or question
  • If appropriate, first generate ideas individually on paper
  • Begin recording ideas from the group --sequentially or otherwise
  • Encourage “piggy-backing” and “wild or crazy” ideas
  • Discourage criticism or judgmental comments
  • Push past “the pause”
  • Cluster before you prioritize


A Process Improvement Model

Aim (The aim of the process --How are things supposed to happen?)
Reality (How do things actually happen?)
Root Causes (What would account for any gaps between the aim and reality?)
Improvement Options (What are options that might help close the gap?)
Value-added Implementation (Of the many options, which ones will add value? How would they be implemented?)
Evaluation and Continuous Improvement (What are the criteria for success? What is the evaluation plan? What mechanisms will help ensure continuous improvement?)
Source: Valuable Disconnects by Joel Cutcher-Gershenfeld and Kevin Ford

Thursday, May 27, 2010

Week 15

Monday- Victoria Day

Tuesday - Wasn't Absent.

Wednesday- I had to write the test today and then i had to continue my research for my crane project. i had to put all of the information into a slide show with a minimum of fifteen slides. I did not finish that today, i will have to conitinue it tommorrow

Thursday - Today i finished my slideshow with my reasearch on Tower Cranes. I will next have to start my individual AutoCad drawing of my tower crane plan. This project is going to be fun.

Friday - Today we continued to work on AutoCad, i came up with my own design using Ibeams. My design i think will be very succesfull i did not finish my full box yet. I will have to finish it on monday.

Thursday, May 20, 2010

Crane Research

  • Large anchor bolts embedded deep into this pad support the base of the crane. cranes are essentially bolted to the ground to ensure their stability
  • The crane cannot lift that much of weight if load is at the end of the jib. the closer the loads is positioned to the mast the more weight the crance can lift saftley.
  • The tower crane is a modern form of balance crane. Fixed to the ground (or “jacked up” and supported by the structure as the structure is being built), tower cranes often give the best combination of height and lifting capacity and are used in the construction of tall buildings. To save space and to provide stability the vertical part of the crane is often braced onto the completed structure which is normally the concrete lift shaft in the center of the building. A horizontal boom is balanced asymmetrically across the top of the tower. Its short arm carries a counterweight of concrete blocks, and its long arm carries the lifting gear. The crane operator either sits in a cabin at the top of the tower or controls the crane by radio remote control from the ground, usually standing near the load. In the first case the operator’s cabin is located at the top of the tower just below the horizontal boom. The boom is mounted on a slewing bearing and is rotated by means of a slewing motor. The lifting hook is operated by a system of sheaves.

  • In order for a crane to be stable, the sum of all moments about any point such as the base of the crane must equate to zero. In practice, the magnitude of load that is permitted to be lifted the “is some value less than the load that will cause the crane to tip.

The Engineering Design Process

Elements of the Design Project :
  • Problem identification
  • Research Phase
  • Requirements Specification
  • Concept Generation
  • Design Phase
  • Prototyping Phase
  • System Integration
  • Maintenance Phase
Needs Identification:
What is the problem ?
  • Collect Information
  • Interpret information
  • Organize needs hierarchy
  • Determine relative importance of needs
  • Review outcomes and process

Examples: Need: Drivers have difficulty seeing obstructions in all directions

Objective: Design system to avoid accidents.

Concept Generation and Evalution:

  • Explore Many Solutions - Brainstorm
  • Select the Best Solution - based on needs and constraints
  • Creativity- Development of new ideas
  • Innovation - Bringing creative ideas to reality.

Concept Generation:

  • Substitue
  • Combine
  • Adapt
  • Modify
  • Put to other use
  • Eliminate
  • Rearrange or reverse

Decision Making Guidelines:

  • Decision by authority(leader)
  • Expert Member
  • Average Member Opinion
  • Majority
  • Consensus

Project Management:

  • Work to be done
  • Timeframe
  • Rescources Needed
  • Responsible Person
  • Previous dependent activities
  • Checkpoints/Deliverables for monitoring progress