The estimate can be
prepared after all the information has been collected and analyzed, and the
cost engineer decides upon the format to present the change. It is important to
have a prior agreement and discussion as previously indicated with the
contractor. Generally, successful negotiations depend on agreement in scope of
work and accurate quantity take-off and a detailed estimate supported by
accurate cost data for all elements. General guidance for the calculation of
direct costs is noted as follows. Technical Data used in the field explained in
quantity surveyor
courses in Rawalpindi.
Additional Work:
For additional work,
items and format should be priced similar to a new contract as performed by the
known contractor. New work should be priced at the rates anticipated to be in
effect at the time the work will be performed. Some more details of quantity surveyor courses
in Rawalpindi are as under.
Changed Work:
For changed work, a
separate quantity takeoff for each item directly affected will be required for
both before and after the change. Each item should be priced at the rates,
which would be in effect at the scheduled time of accomplishment. Typically,
each item of changed original work is priced, and each comparable item of
revised work is priced at the applicable rates. The net cost (or credit) would
be obtained by subtracting the total of the original work from the total of the
revised work. It is important that the cost engineer maintain a comparable
scope of work for both estimates. When an item of work will be performed as
originally specified, except for a revision in quantity, the net quantity may
be estimated directly for that item.
Deleted Work:
For deleted work, the
item and format should be priced similar to a new procurement as performed by
the current contractor. Rates in effect at the time the work would have
occurred should be used. In addition to the direct cost of the work, overhead,
profit, and bond costs should be included for credit on the deleted work.
Impact Related Costs:
Impact related costs,
if applicable, should be clearly described and included as a part of each cost
estimate.
Detail of Estimate:
The cost estimate for a
modification should be prepared in as much detail as required to clearly cost
the change for negotiations. In many instances, even more detail is required to
negotiate the lowest reasonable price. The estimate should, however, be
modified to reflect a negotiated procurement in lieu of an advertised
procurement. It should include a general summary sheet relating the major
categories of cost of the modification, both for increases and for decreases.
Revised construction drawings and specifications are included in the modification
supporting documents. When the cost engineer prepares the estimate, the effort
should be the same as the contractor acting prudently under the given
conditions. The results will generally provide an accurate estimate, which can
be used as a firm basis for negotiation. The Government estimate should not
rely on past generalized rates and settlements unless actually appropriate to
the specific modification under consideration. TSK Training for Skills and
Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students
who wants to join quantity surveyor courses in Rawalpindi.

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