FLOOD00844

• County: Statewide
• Title: Supplemental Specifications to the 1986 Standard Specifications for Road and Bridge Construction
• Date: 9/1/1989
• Prepared For: State of Colorado
• Prepared By: State of Colorado Department of Highways
• Floodplain - Doc Type: Educational/Technical/Reference Information

The Contractor shall keep one set of plans and
shop drawings available on the project at all times.
Payment for preparing and furnishing all shop
drawings will not be paid for separately, but shall be
included in the work.

105.03 Conformity with Plans and Specifi.
cations. All work performed and all materials
furnished shall conform to the lines, grades, cross
sections, dimensions and material requirements,
including tolerances, shown on the Contract.
For those items of work where working tolerances
are not specified, the Contractor shall perform the
work in a manner consistent with reasonable and
customary manufacturing and construction
practices.
When the Engineer finds the materials furnished,
work performed, or the finished product does not
conform with the Contract but that reasonably
acceptable work has been produced, the Engineer
will determine the extent the work will be accepted
and remain in place. If accepted the Engineer will (1)
document the basis for acceptance by Contract Modifi-
cation Order which will provide for an appropriate
adjustment in the Contract price for such work or
materials not otherwise provided for in this sub-
section or (2) notify the Contractor in writing that the
Contract unit price will be adjusted in accordance
with this subsection when Pis 25 or less, or (3) in lieu
of a price adjustment, permit correction or replace-
ment ofthe finished product provided the correction
or replacement does not adversely affect the work.
When the Engineer finds the materials furnished,
work performed, or the finished product are not in
conformity with the Contract and has resulted in an
inferior or unsatisfactory product, the work or
materials shall be removed and replaced or other.
wise corrected by and at the expense of the
Contractor.
Materials will be sampled and tested by the
Division in accordance with the Standard Sampling
and Testing schedules and procedures contained in
the Division's Materials Manual. The approximate
maximum quantity represented by each sample will
be as set forth in the schedules. An additional
number of samples in relation to the quantity of
material represented may be selected and tested at
the Engineer's discretion. The quantity represented
by five consecutive random samples will constitute a
lot whenever production schedules and material
continuity permit. The Engineer may establish a lot
consisting of the quantity represented by any
number of consecutive random samples from one to
seven inclusive when, it is necessary to represent
short production runs, significant material changes,
or other unusual characteristics of the work. Invalid
tests with sampling or testing errors will not be used.
Materials or work will only be evaluated for price
adjustment when deviations from specifications
occur on any of the several individual tests for the lot.

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The several individual test values will be averaged
and the percent of price reduction for the lot will be
determined by applicable formula. This will apply
only when a price reduction factor for that element is
listed in the following table. The formula in (a) and
(b) below shall be used only when the lot includes
three to seven tests inclusive.
(a) The formula, P = (Xn + aR - Tu) . F., will be
used if a maximum limit only is specified or;
when the average of the several test values is
above the mid point of the specification band
or above the job-mix formula value.
(b) The formula, P = (TL + aR - Xn) . F., will be
used if a minimum limit only is specified or;
when the average of the several test values is
below the mid point of the specification band
or below the job-mix formula value.
(c) When the lot includes fewer than three tests,
the materials will be evaluated for price
reduction by the following procedure: Lots
which include two tests shall be divided into
two separate lots represented by one test
each, as determined by the Engineer. Each
lot which deviates from the specifications
shall be price adjusted by one of the following
formulae. When a maximum limit only is
specified or the test value is above the
maximum specified limit, the formula P =
0.76* (To-Tu)*F will be used. When a min-
imum limit only is specified or the test value
is below the minimum specified limit, the
formula P = 0.76* (TL-TO)*F will be used.
When a lot is represented by one test only, the
materials will be evaluated for price adjust-
ment as described in this paragraph.

Where:
"P" is the percent of reduction in contract price,
'''Xn'' is the average of the several test values from
samples taken from the lot, with "n" indicat-
ing the number of values,
"a" is a variable factor to be used in "n" changes"
according to the following:
when n is 3, a= 0.45;n is 4, a = 0.38; nis 5, a =
0.33; n is 6, a = 0.30; and n is 7, a = 0.28.
"R" is the difference between the highest and
lowest values in the group of several test
results from the lot,
"Tu" is the upper or maximum tolerance limit
permitted by the specifications,
"TL" is the lower or minimum tolerance limit
permitted by the specifications, and
"To" is the test value of the test which deviates
from the specifications,
"F" is price reduction factor to be applied for each
element as shown in the following table: