By utilizing PH$-$CC$-796($form$)$ & OPSS $127$ rental rates for equipment, and

production rates determined by internet search if required.

The contractor was asked to perform some extra work on a project $($The owner

and contractor could not agree on a lump sum price to complete the work$).$ This

work consisted of excavating a trench ${750}^{\text{'}}$ in length, ${30}^{\text{'}\text{'}}$ in width and at a depth

of $2$ metres with a Kubota $080$ excavator $(9$ ton machine$).$ The trench was then to

have a $6"$ Big $O$ installed in the one corner at the bottom of the trench and

covered with ${1\mathrm{.}5}^{\text{'}}$ of sand. Round trip to the pit where the sand is $1\mathrm{.}15$ hours and

it takes $15$ minutes to get the load on$.$ The sand costs $$\frac{5\mathrm{.}50}{m}3.$ A nylon rope is

to be installed in the Big $O$ so they can pull the electrical wire and $1"$ poly pipe to

the well. This work was missed in the original contract. The connection at the

well and all components in the well were covered in the original contract. The

local plumber is union and the prime contractor is nonunion. The plumber has to

lay the pipe and place the rope in the Big O$,$ supply and install the electric wiring &

pipe for the $\frac{3}{4}$ hp submersible pump that will be going in the well. The plumber

also has to cover the Big $O$ in the trench with the sand. It took the plumber $(1-$

$$\frac{75\mathrm{.}00}{h}r)$ and his crew $(4$ members $-$ to junior plumbers at $$\frac{55\mathrm{.}00}{h}r$ and two

labours at $$\frac{21\mathrm{.}00}{h}r)12$ hours to complete their associated work $($The union

agreement says they only have to work $10$ hrs$/$day$).$ They used a Case $580$

backhoe to move the sand over to the trench, which was working for $5$ hrs$,$ and

was on standby for $3$ hrs$.$ The prime contractor had a tandem dump truck $($diesel$)$

that he used to get the sand from the pit which took three trips.

The plumber has a mobilization$/$demobilization charge of $$2000\mathrm{.}00$ on top

standard billing rates.

The prime contractor, had three labours at $$\frac{27\mathrm{.}50}{h}r,$ operators are charged out

at $$\frac{35\mathrm{.}00}{h}r.,1-$ Supervisor$/$Foreman at $$\frac{65\mathrm{.}00}{h}r...........................$in one piece of paper give me the total dollar value for the plumber work and the total value for the prime contractors work. And the total for the extra work give me answer as soon as possible as it is in class assignmnet I have to submit in $30$ Min