APPENDIX A TABULATION OF CONSTRUCTION TOLERANCES iTABULATION OF CONSTRUCTION TOLERANCES Perform all work and furnish all materials in reasonably close conformity with the lines, grades, cross sections, dimensions, and materi al requirements, including tolerances, shown on the plans or indicated in the specifications. The maximum limits of tolerances listed below do not necessarily represent total construction acceptability, but are limits at which the Department may consider construction tolerances acceptable. It is intended that, in general, all work and materials be well within the tolerances given. The Department will not allow continued employment of equipment and methods which allow undue proportion of all work and materials approaching the tolerances limits. SECTION SUBJECT TOLERANCE
109.01.03 D) Automatic printing scales
printed weight compared to scale dis play. The printed weight is within 60 pounds of scale display.
204.03.07 A) Surface for channel lining,
class IV. 6 inches from a true plane.
204.03.10 1) Distance fro m centerline to
ditch line in cuts and to shoulder line in fills. one foot from dimension shown on plans.
204.03.10 1 ) Total width of roadbed. one foot at an y location.
204.03.10 2) Specified slope limits for slope
surfaces between ditch lines or shoulder lines and original ground. Not to be inside specified slope limits more than 6 inches nor outside specified slope more than one foot, both measured horizontall y.
204.03.10 3) Cut bench elevation. one foot of bench elevation
established on plans or by the Engineer.
204.03.10 5) Subgrade tolerance for roa
d- way and drainage excavation. Complete to within 0.1 foot of designated grade at time of final acceptance, except when rock subgrade is specified, the tolerance is 0.2 foot.
206.03.03 Moisture content of emban
k- ment or subgrade material. 2% of the optimum moisture content as deter-mined by KM 64-511.
207.03.02 Subgrade prepared for base or
surface courses. 1/2 inch from specified crown section.
302.03.06 Surface of finished gravel and
DGA base. 1/2 inch from specified cross section; 3/8 inch in 10 feet at any location from the s pecified lon gitudinal grade. ii 401.02.01 H) Asphalt Binder control unit meterin g devices. 1.0% when tested for accurac y.
401.02.02 B) Scales for weigh box or hopper
or for weighting asphalt material. Tolerance on over registration and under registration of not exceeding 0.5% of indicated weight when tested for accuracy. The change in load required to noticeably alter the position of rest of the indicating element(s) of a non- automatic indicating scale shall not be greater than 0.1% of the nominal scale ca pacity.
401.02.03 Batch tolerances for automatic
batching or pro-portioning hot-mix asphalt plants. Material: Batch aggregate component Mineral filler Asphalt Binder Zero return (aggregate) Zero return (asphalt materials) Accumulated weight of batches. 1.5% of total batch weights. 0.5% of total batch weights. 0.1% of total batch weights. 0.5% of total batch weights. 0.1% of total batch weights. 2.0% of that total batch wei ght.
401.03.01 Bituminous plant mixed
pavements - JMF tolerances. See specifications for indivi- dual mixtures.
403.03.06 A) Asphalt base, initial treatment
and resurfacing projects. The rate of application shall not exceed designated rate by more than + 5%.
403.03.06 B) Asphalt base, new construc t-
ion payment on basis of: weight, or area. Total combined thickness of all layers within 1/2 inch of compacted plan thickness. Deficient in thickness by more than 1/2 inch of compacted plan thickness.
403.03.07 Transverse joints in all asphalt
courses. Deviations do not exceed tolerances described in Subsection 403.03.11 from a 10-foot straight edge after joint is com plete and rolled.
403.03.11 Surfaces of finished courses;
asphalt plant-mixed pave- ments. Finished surfaces of base course and binder course shall not deviate more than 1/4 inch from 10-foot straightedge. iii Cross slope of all courses. Finished surface of final surface course shall not deviate more than + 1/8 inch from 10-foot straightedge. Do not deviate more 1/4 inch in 5 feet from required cross slope.
405.03.04 Rate for applying cover
material for asphalt seal coat. Not to exceed designated rate by more than 5%.
407.02.02 Asphalt mixture for pavement
wedge. Asphalt binder content shall be maintained within 0.5%.
408.03.01 Asphalt pavement milling and
texturing surface tolerance. Finished surfaced after final cut does not deviate more than 1/8 inch from a 10-foot straightedge and that the cross slope does not deviate more than 3/8 inch in 10 feet. Correct all irregularities exceedin g these limits.
413.03.01 Asphalt content in
Microsurface. ±0.5% from mix design.
413.03.06 Dry aggregate in leveling
course. ±2 lb/y d2
413.03.07 A) Emulsified asphal t-to-dry
aggregate proportion. Conform to approved mix design within a tolerance of ±2 gal/ton
413.03.07 A) Yield of microsurface. Quality control tolerance from
the specified application rate is ±2 lbs/s y
501.03.17 D) JPC pavement; Transverse
contraction joints. Not to deviate from true alignment more than 1/4 inch in one lane width.
501.03.19 JPC Pavement and Base
Surface Tolerances. Pave- ment abutted by subsequent or JPC shoulder; edge slump with edge forms or tailing forms or fixed forms; Pavement not abutted by pavement or shoulders edge slump; Not to exceed 1/8 inch. Does not exceed 1/4 inch. iv High spot 6 inches or more from pavement ed ge. Do not to exceed 1/8 inch from a 10-foot strai ghtedge.
502.03.01 Dowel bar location.
Horizontal offset Longitudinal translation Horizontal skew Vertical skew Vertical depth ±1 inch ±3 inches ½ inch, max ½ inch, max The minimum distance below the concrete pavement surface must be: DB=T/3 + ½ inch Where: DB = vertical distance in inches, measured from the concrete surface to any point along the top of the dowel bar; and T = actual concrete pavement thickness at joint location, in inches. The maximum distance below the surface to any point along the dowel bar should be 2T/3.
508.03 01
508.03.02 Permanent Concrete Median
Barriers. Top surface cast-in-place barriers (fixed form). Top surface cast-in-place barriers (slip form). 1/4 inch when tested longitudinally by a 10-foot straightedge. No deviation more than 1/2 inch from the line established by the reference wire between an y 2 reference wire su pports.
511.03.01 Masonry drill bits for drilling
holes of installation of steel dowels into existing concrete by use of grout. Diameter no less than 1/8 inch greater nor more than 1/2 inch greater than diameter of dowels.
601.02.14 Scales for weighing water,
aggregates, cement, and fly ash for concrete for structures. Within + 0.5% of net load on scales.
601.03.03 Concrete for structures ai
r- entraining admixture net air content (b y volume). Volume of 6% 2% by volume. v 601.03.03 Concrete for structures; accuracy of individual ingredient materials for each batch. 2.0% for aggregates. 1.0% for water & cement. ± 1.0% for cement in batches of 4 cubic yards or greater. ± 1.0% for total cementitious materials in batches of 4 cubic yards or greater. 0.0% to + 4.0% for cement in batches less than 4 cubic yards. 0.0 % to + 4.0 % for total cementitious materials in batches less than 4 cubic yards. ± 3.0% for admixtures.
601.03.03 B
) Air content of mortar or grout. Volume of 8% 2%.
601.03.03 E) 1) Measuring cement. When the weight of entire
shipment of cement in bags varies more than 2% from 94 pounds per bag. Weigh the cement in bulk on scales.
601.03.03 E) 3)
Water metering systems for mixin g concrete for structures. + 1% of required amount of water per batch.
601.03.08 C) 1) Truck mixing of concrete for
structures, quantity of mixing water. Measure and Control to 1%.
601.03.09 A) Variation of finished surface
of bridge seats. Not to vary more than 1/32 inch above or below true level plane.
601.03.18 All exposed finished concrete
surfaces unless specified else- where in the contract. Not to vary more than 1/4 inch in 10-feet as measured from a straightedge.
602.03.04 All steel reinforcement except
that placed in bridge decks. 1/2 inch of position, and specified spacing. 1/4 inch of specified clearance from face of concrete.
602.03 05
Epoxy Coated Tie Wires, Chairs, etc. Film thickness of epoxy coating. Film thickness of vinyl type coating. Thickness of flexible plastic or vin yl coatin g for tie wires. 7 mils. 10 mils. 7 mils.
604.03.08 A) Bearing piles that will be
exposed. vi Variance from vertical during driving. Variance from plan position after driving. Stringline stretched between exterior piles in the exposed portion of the pile bent or group. 1/4 inch per foot from vertical or batter position specified in the Plans. 4 inches from plan position at the pile cut-off elevation. 2 inches.
604.03.08 B)
Bearing piles that will be unexposed in the finished structure. Variance from vertical during driving. Variance from plan position after drivin g. 1/4 inch per foot from vertical or batter position specified in the Plans. 6 inches from plan position at the pile cu t-off elevation.
605.03.05 D) 2) Calibration of hydraulic jacks
for prestressin
g. 2%.
605.03.08 Prestressed or precast con-
crete members dimensional tolerances of I-beams, box beams with cast-in-place slab, precast barrier unit, deck units, and pilin
g.Refer to tables in Subsection
605.03 08.
606.02.10 E) Concrete bridge deck
overlays; accuracy of latex and water meters used in measurement for mixin
g. 1%.
608.03.16 Concrete bridges. Lines of
finished concrete, except bridge slabs, and precast piles. 1/4 inch per 10 feet or vary from plan lines more than 0.1% of the distance between extremities of the unit considered.
609.03.03 Reinforced concrete bridge
slabs; placement of steel reinforcement. 1/4 inch vertically and horizontally of the position shown.
609.03.08 Reinforced concrete bridge
slabs; slab surface variations. 1/8 inch in 10 feet. vii 609.05 Reinforced concrete ridge slabs; thickness of concrete cover over top mat of steel reinforcement. See schedule for Adjusted Quality for Depth of Cover Deficiency Subsection 609.05.
612.03.06 Field assembled structural
plate pipes; vertical elong-ation. 25% of specified elong- ation.
612.03.07 A) Asphalt paving for pipe and
pipe arches; aggregate and asphalt binder temperature. 60 F.
612.03.07 B) Concrete paving for pipe and
pipe arches; uniform pave- ment thickness. 1/2 inch.
703.03.01 B) Slope protection; reinforced
concrete slope wall. No surface variation from a true plane of more than 1/2 inch per 4 feet.
703.03.01 C) Slope protection; cyclopean
stone riprap; finished slope. No surface variation of more than 6 inches from a true plane.
703.03.01 D) Slope protection; crushed
aggregate slop protection. No surface variation of more than 1 1/2 inches per 4 feet from a true plane.
703.03.02 A) Slope protection; channel
lining classes II and III. No surface variation of more than 3 inches from a true plane.
703.03.02 B) Slope protection; channel
lining class IV. No surface variation of more than 6 inches from a true plane.
705.03 Cored hole drainage
connector; diameter of hole shall be equal to the outside diameter of pipe. + 1/2 inch. APPENDIX B INDEX
Source: Kentucky Standard Specifications for Road and Bridge Construction, 2019 Edition. Pages 682–689 of 718.