Elevator designing proposal

1

PA: Written Communication

This assignment is an individual assignment and not a team effort. Your submission for this

assignment must be submitted as a word document or a pdf file on Blackboard. The

purpose of this assignment is to practice writing a technical document.

You are designing a new elevator for the peralta building. You will be designing a functional

prototype (i.e. a scaled down version of the design) towards this effort and writing a proposal

towards the design of the prototype. The elevator needs to be motorized and a wheel should be

attached to the motor which will rotate (and move the elevator car up or down depending on the

direction of the motor spinning) as shown in Fig. 1. The format and content of the documentation

is described in detail below. This should be a cohesive, narrative, professional document.

Figure 1: Elevator prototype design

Format:

 Title Page: Title, Your full name

 Document should be written as a formal technical document with appropriately formatted section headings (i.e. bold and/or underline).

 Sections to include: Introduction, Description of the existing elevator, proposed design, references

Content:

 Introduction o Introduce the project and the result that you are planning to obtain

 Description of the existing elevator o Include general information about the current elevator in the PRLTA building

(Make, manufacturer, lbs supported and any other technical details)

o Include a picture of the elevator

6 in.

string

elevator car Floor 3

Floor 2

Floor 1

wheel attached to

motor

6 in.

6 in.

2

 Proposed Design (this is a bullet list of points that should be included in this section. Your write up should not be a list that answers each of these points but a cohesive

narrative)

o What is the height, length and width of your elevator car? How is the string attached?

o What is the diameter of the wheel? What is the circumference? How many degrees are needed to raise the elevator box up by one floor (six inches)? How

many rotations is this? Include the equations you used to calculate this. (Do not

show the numerical calculations, just show the equations with variables.

Remember to number the equations and explain what each symbol in the equation

means.)

o Predict the degrees and rotations to get to each floor using a table as shown in Table 1

Table 1: Predicted degrees and rotations to get to each floor

Floor Predicted Height(in) Degrees to get to floor Rotations to get to floor

1 0

2 6

3 12

o What is the maximum weight do you propose that the elevator prototype can carry?

o Research online and select a motor that will work for this prototype. What are the specifications of the motor (Voltage, rated power, rated current etc.,) and the cost?

How did you select this motor? Justify your selection.

 References: o Include all references used (references should also be cited in the text of the

report).

o Use an appropriate citation format (i.e. IEEE is preferred but not mandatory – see http://libguides.asu.edu/ for helpful information under ‘engineering-basic’ or your

specific discipline).