Sl no.	Questions such as	Requirements	Objective,Function,Constraint
1	What task should your machine perform?	It should crush cups	Function
2	Is it for a long term usage or short term?	Long term	Objective
3	How many cups should your machine crush at a time?	1 cup	Constraint
4	Interaction between machine and user?	Alerting the user	Function
5	Which kind of cups should your machine crush?	Plastic and paper cups	Objective
6	Automatic, semiautomatic or manual working?	Semi-Automatic	Objective
7	What should be the time taken to crush the cups?	Within 10 to 20 seconds	Constraint
8	Should it indicate the number of cups crushed?	Yes	Function
9	Your machine should be portable or not?	Yes, it should be portable	Objective
10	What do you say about safety of machine?	it must be safe for the user	Objective

1.1 Objective

1. Cost effective
2. Semi-Automatic-The machine must sense the presence of cups.
3. Portable-Must be easily lifted and shifted to any other places if necessary
4. Should crush plastic and paper cups.
5. Should be Rugged.
6. Should be safe to use-Safety guards must be provided.

1.2 Pair wise comparison Chart(PCC)

Priority among various objectives is set through and then the scores are been calculated.

Objective	Automatic	Portable	Cost efficient	safety	Score
Semi-Automatic	***	1	0	0	1
Portable	0	***	0	0	0
Cost effective	1	1	***	1	3
Safe	1	1	0	***	2

Rank of objectives in order of decreasing value of importance:-

1. Cost effective
2. Safe
3. Semi-Automatic
4. Portable

Based on information gathered through interaction with client, initial survey and completing phase 1.1 the problem definition is formulated as follows.

Problem definition version 1.1

Design a cost effective machine which crushes paper and plastic cups, has safety measures installed in it, the machine should be Semi-automatic and portable. The machine should even be applicable for long term usage.

1.3 Identify constraints

1. The machine should be able to crush only 1 cup at a time.
2. Cost of the machine should not exceed Rs4000
3. Machine takes atleast of 20 secs to crush one cup.

Problem definition version 1.2

Design a cost effective cup crushing machine which is Semi-automatic, portable and safe to use.The machine should be able to crush max of 1 cup at a time, Cost of the machine should not exceed Rs4000 and the machine takes atleast of 20 secs to crush one cup.

1.3 Establish functions

1. Crushing the cups
2. Detect the presence of cups and initiate the process of crushing.

3. Alert the user upon sensing the cups.
   

4. Dispenses the crushed cups into the trash can.
5. Should display the number of cups crushed.

Problem definition version 1.3

Design a cost effective cup crushing machine which is Semi-automatic, portable and safe to use.The machine should be able to crush max of 1 cup at a time, Cost of the machine should not exceed Rs4000 and the machine takes atleast of 20 secs to crush one cup.The machine must detect the presence of cups and initiate the process of crushing and alert the user upon sensing the cups, dispense the cups into the trash can and should even indicate the statistics of the cups crushed.