Finding productivity rate? crew backfilled 3,520m3 of basement over 3 week period...

[kiwi]

Hello the question reads.


"Site records indicate that this crew backfilled 3,520m³ of basement over a 3 week period working 5-days/week; 8-hours/day."




There is one Labour Foreman @$65.00 per hour, 4 Labours @$28.00, 1 Operator @$45.00.


There is one Backhoe @$145.00, one Roller @$95.00.


2 Questions


What was the productivity rate of the crew expressed as CREW.HOURS/m³



What was the productivity rate of the crew expressed as m³ / MAN.HOUR



Here is my work so far.


Crew Productivity:
3,520m³ / ( 15 days x 8 hours) = 29.3m³ per hour



Average Cost Per Worker
$222.00 per hour / 6 = $37.00 per man hour



Average Cost Per Equipment
$240.00 per hour / 2 = $120.00 per man hour

 

[stapel]

"Site records indicate that this crew backfilled 3,520m³ of basement over a 3 week period working 5-days/week; 8-hours/day."

There is one Labour Foreman @$65.00 per hour, 4 Labours @$28.00, 1 Operator @$45.00.

Are all workers' rates given in terms of "per hour"?

There is one Backhoe @$145.00, one Roller @$95.00.

Is this cost of rental for the job? For a week? For a day? For an hour? Or something else?

1. What was the productivity rate of the crew expressed as CREW.HOURS/m³

What is the meaning of "CREW.HOURS"? In particular, what is the definition of the decimal point? Is this supposed to be a hyphen, perhaps indicating multiplication, in a "man-hours" sense? Of all the workers, who all is included in the "CREW"?

2. What was the productivity rate of the crew expressed as m³ / MAN.HOUR

Is "MAN.HOUR" meant to stand for "man-hours"?

Also, how (specifically) does your textbook define these two types of productivity rates?

Here is my work so far.

Crew Productivity:
3,520m³ / ( 15 days x 8 hours) = 29.3m³ per hour

The question asks for "CREW.HOURS/m³", but you appear to have provided "(cubic meters) per (crew-hour)"...?

Average Cost Per Worker
$222.00 per hour / 6 = $37.00 per man hour

So you're supposed to be treating the different categories of employees as being the same...?

Average Cost Per Equipment
$240.00 per hour / 2 = $120.00 per man hour

How does this related to questions (1) and (2)? Thank you!

 

[mmm4444bot]

Is this a revised version of your other post [?]

No. The exercise in the other thread deals with an excavation (backhoe, truck, and two workers); the exercise in this thread concerns a backfill (backhoe, roller, and six workers).