Standard Specifications for Road, Bridge, and Municipal Construction 2020 (M 41-10)

Manholes, Inlets, Catch Basins, and Drywells

7-05

Manholes, catch basins, inlets, and drywells shall be constructed on a compacted or
undisturbed level foundation. If the Contractor elects to use a separate cast-in-place base,
the concrete shall be Class 4000. Upon final acceptance of the Work, all manholes, catch
basins, inlets, drywells, and other drainage Structures shall conform to the requirements
of the

Standard Plans

except as approved by the Engineer.

Any shoring or extra excavation required shall meet the requirements of

Section 2-09.3

7-05.3(1) Adjusting Manholes and Catch Basins to Grade

Where shown in the Plans or where directed by the Engineer, the existing manholes,
catch basins, or inlets shall be adjusted to the grade as staked or otherwise designated by
the Engineer.

The existing cast iron ring and cover on manholes and the catch basin and inlet frame and
grate shall first be removed and thoroughly cleaned for reinstalling at the new elevation.
From that point, the existing Structure shall be raised or lowered to the required
elevation. The materials and method of construction shall conform to the requirements
specified above, and the finished Structure shall conform to the requirements of the

Standard Plans

except as approved by the Engineer.

7-05.3(2) Abandon Existing Manholes

Where it is required that an existing manhole be abandoned, the Structure shall be broken
down to a depth of at least 4 feet below the revised surface elevation, all connections
plugged, and the manhole filled with sand and compacted to 90 percent density as
specified in

Section 2-03.3(14)C

. Debris resulting from breaking the upper part of the

manhole may be mixed with the sand subject to the approval of the Engineer. The ring
and cover shall be salvaged and all other surplus material disposed of.

7-05.3(3) Connections to Existing Manholes

The Contractor shall verify invert elevations prior to construction. The crown elevation
of laterals shall be the same as the crown elevation of the incoming pipe unless specified.
The existing base shall be reshaped to provide a channel equivalent to that specified for a
new manhole.

The Contractor shall excavate completely around the manhole to prevent unbalanced
loading. The manhole shall be kept in operation at all times and the necessary precautions
shall be taken to prevent debris or other material from entering the sewer, including a
tight pipeline bypass through the existing channel if required. Water used for flushing and
testing shall not be allowed to enter the sewer.

All damage to the manhole resulting from the Contractor’s operation shall be repaired at
no expense to the Contracting Agency.

7-05.3(4) Drop Manhole Connection

Drop manhole connections shall be constructed in accordance with the Plans. One length
of ductile iron pipe shall be provided outside the manhole.

Page 7-26

Manholes, Inlets, Catch Basins, and Drywells

7-05.4 Measurement

Manholes will be measured per each. In addition to the measurement per each, manholes
in excess of 10 feet in height will be measured per linear foot for each additional foot of
height over 10 feet. Measurement of manhole heights for payment purposes will be the
distance from the flow line of the outlet pipe to the top of the manhole ring measured to
the nearest foot.

Catch basins and inlets, will be measured per each.

Adjustment of manholes, catch basins, and inlets will be per each.

Structure excavation Class B and Structure excavation Class B including haul will be
measured by the cubic yard as specified in

Section 2-09

Abandon existing manholes will be measured per each.

Connections to existing drainage Structures will be measured per each.

Shoring or extra excavation will be measured as specified in

Section 2-09.4

Drop manhole connections will be measured per each.

Precast concrete drywell will be measured per each.

7-05.5 Payment

Payment will be made for each of the following Bid items that are included in the
Proposal:

“Manhole ____ In. Diam. Type ____”, per each.
“Manhole Additional Height ____ In. Diam. Type ____”, per linear foot.
“Catch Basin Type ____”, per each.
“Catch Basin Type 2 ____ In. Diam.”, per each.
“Grate Inlet Type ____”, per each.
“Drop Inlet Type ____”, per each.
“Concrete Inlet”, per each
All costs associated with furnishing and installing gravel backfill for bedding
manholes, inlets and catch basins shall be included in the unit Contract price for the
item installed.
“Precast Concrete Drywell”, per each.
The unit Contract price per each for “Precast Concrete Drywell” shall be full pay for
furnishing and installing the drywell, including all Structure excavation, gravel backfill
for drywell, crushed surfacing base course, and drainage geotextile.
“Combination Inlet”, per each.

Manholes, Inlets, Catch Basins, and Drywells

7-05

All costs associated with furnishing and installing gravel backfill for bedding
manholes, inlets, and catch basins shall be in the unit Contract price for the item
installed.
“Adjust Manhole”, per each.
“Adjust Catch Basin”, per each.
“Adjust Inlet, per each.
The unit Contract price per each for “Adjust Manhole”, “Adjust Catch Basin”,
or “Adjust Inlet” shall be full pay for all costs necessary to make the adjustment
including restoration of adjacent areas in a manner acceptable to the Engineer.
“Structure Excavation Class B”, per cubic yard.
“Structure Excavation Class B Incl. Haul”, per cubic yard.
Structure excavation for concrete inlets is considered incidental to the cost of the
inlets and shall be included in the unit Contract price for the concrete inlet.
“Abandon Existing Manhole”, per each.
“Connection to Drainage Structure”, per each.
“Shoring or Extra Excavation Class B”, per square foot.
“Drop Manhole Connection”, per each.
The price paid per drop connection is in addition to the price paid for manholes and
for the specified sewer pipe that is replaced with ductile iron pipe.

Cleaning Existing Drainage Structures

7-07

Cleaning Existing Drainage Structures

7-07.1 Description

This Work consists of cleaning, removing, and disposing of all debris and obstructions
from existing culvert pipes, storm sewer pipes, drains, inlet Structures, manholes, box
culverts, grates, trash racks, or other drainage features within the limits of the project.

7-07.2 Vacant
7-07.3

Construction Requirements

All pipes and drainage Structures that require cleaning are identified in the Plans. They
shall be cleaned by flushing, rodding, or whatever means are necessary to provide
unobstructed drainage. All catch basin sumps, manholes, inlet and outlet Structures, and
debris racks shall also be freed of all dirt, rock, and debris. Existing drainage facilities
shall be cleaned as a first order of Work to enhance natural drainage off and through the
project. They shall be kept clean throughout the life of the project and be clean upon final
acceptance of the Work.

Material to be removed shall be disposed of in the following manner:
1. Structures specifically noted in the Contract that are suspected to contain

contaminated sediment shall be disposed of at a licensed disposal facility.

2. While performing the Work, if drainage water and/or soil appear oily, exhibit an

unusual color or odor, or if staining or corrosion is observed, the Contractor shall
stop work and immediately notify the Engineer. Additional work necessary in
handling materials shall be in accordance with

Section 1-04.4

3. If sediment and water from structures does not meet the conditions described in

1 or 2 above, material may be placed in an upland area with no possibility of surface
runoff to waters of the State, including wetlands.

While performing the Work, the Contractor shall implement all necessary best
management practices and measures to meet the conditions of

Section 1-07.5

7-07.4 Vacant
7-07.5 Payment

Payment will be made for the following Bid item when it is included in the Proposal:

“Cleaning Existing Drainage Structure”, lump sum.

The lump sum Contract price for “Cleaning Existing Drainage Structure” shall be full pay
for performing all Work as specified. In the event the Contract does not include a Bid item
for cleaning existing drainage Structure, such Work, if required, shall be performed by the
Contractor in accordance with

Section 1-04.4

Page 7-30

General Pipe Installation Requirements

7-08

General Pipe Installation Requirements

7-08.1 Description

This Work includes installing culverts, storm sewers, and sanitary sewers. The Contractor
shall also follow Section

as it applies to the specific kind of Work.

7-08.2 Materials

Gravel Backfill for Foundations

9-03.12(1)

Gravel Backfill for Pipe Zone Bedding

9-03.12(3)

7-08.3

Construction Requirements

7-08.3(1) Excavation and Preparation of Trench

7-08.3(1)A Trenches

The length of trench excavation in advance of pipe laying shall be kept to a minimum.
Excavations shall either be closed up at the end of the day or protected per

Section 1-07.23(1)

The trench width shall be as specified in

Section 2-09.4

and shall be excavated to the

depth and grade as staked by the Engineer.

Trenches must be of sufficient width in the pipe zone to permit proper installation and
bedding of the pipe and to provide the required compaction of backfill. Above the top of
the pipe zone, the Contractor may excavate to any width.

All ledgerock, boulders, and stones shall be removed to provide a minimum of 6 inches
clearance under all portions of the pipe.

Placement of bedding material shall precede the installation of all pipe. This shall include
necessary leveling of the native trench bottom or the top of the foundation material as
well as placement and compaction of required bedding material to a uniform grade so that
the entire length of pipe will be supported on a uniformly dense unyielding foundation.

When, after excavating to the foundation level, the material remaining in the trench
bottom is determined to be unsuitable by the Engineer, excavation shall be continued
to such additional depth and width as required by the Engineer. Unsuitable foundation
materials shall be disposed of at an approved site. The trench foundation shall be
backfilled to the bottom of the pipe zone with gravel backfill for foundations, gravel
backfill for pipe zone bedding, or other suitable material, and compacted to form a
uniformly dense, unyielding foundation.

General Pipe Installation Requirements

7-08

All material excavated from trenches and piled adjacent to the trench shall be maintained
so that the toe of the slope is at least 2 feet from the edge of the trench. It shall be piled
to cause a minimum of inconvenience to public travel, and provision shall be made for
merging traffic where necessary. Free access shall be provided to all fire hydrants, water
valves, and meters; and clearance shall be left to enable free flow of storm water in
gutters, conduits, or natural watercourses.

If any part of the excavated material meets the Specifications of

Section 9-03.12(3)

, the

Engineer may require that such material, in the quantity required, be selectively removed,
stockpiled separately, and used as pipe bedding instead of quantities of gravel backfill for
pipe zone bedding. If material so stockpiled becomes contaminated, the Contractor shall
furnish suitable material in an amount equal to that lost by contamination at no expense
to the Contracting Agency. All costs involved in storing, protecting, re-handling, and
placing the material shall be included in other items of Work on the project.

Excavation for manholes and other Structures connected to the pipelines shall be
sufficient to provide a minimum of 12 inches between their surfaces and the sides
of the excavation.

The Contractor shall furnish, install, and operate all necessary equipment to keep
excavations above the foundation level free from water during construction, and shall
dewater and dispose of the water so as not to cause injury to public or private property
or nuisance to the public. Sufficient pumping equipment in good working condition
shall be available at all times for all emergencies, including power outage, and shall have
available at all times competent workers for the operation of the pumping equipment.

Where pipe is to be placed in a new embankment, the embankment shall be constructed
as shown in the Plans or as designated by the Engineer for a distance each side of the
pipe location of not less than five times the diameter and to a minimum height equal
to ½ of the outside diameter of the pipe. The embankment material shall be compacted
to 95 percent of maximum density and the moisture content at the time of compaction
shall be between optimum and 3 percentage points below optimum as determined
by the Compaction Control Tests specified in

Section 2-03.3(14)D

. The trench shall

then be excavated to a width as specified in

Section 2-09.4

, and the pipe installed

in accordance with the

Standard Plans

7-08.3(1)B Shoring

The Contractor shall provide all materials, labor, and equipment necessary to shore
trenches to protect the Work, existing property, utilities, pavement, etc., and to provide
safe working conditions in the trench. The Contractor may elect to use any combination
of shoring and overbreak, tunneling, boring, sliding trench shield, or other method of
accomplishing the Work consistent with applicable local, State, or Federal safety codes.

If workers enter any trench or other excavation 4 feet or more in depth that does not
meet the open pit requirements of

Section 2-09.3(3)B

, it shall be shored. The Contractor

alone shall be responsible for worker safety, and the Contracting Agency assumes
no responsibility.

Page 7-32

General Pipe Installation Requirements

Upon completing the Work, the Contractor shall remove all shoring unless the Plans or
the Engineer direct otherwise.

Shoring to be removed, or moveable trench shields or boxes, shall be located at least 2½
pipe diameters away from metal or thermoplastic pipe if the bottom of the shoring, shield,
or box extends below the top of the pipe, unless a satisfactory means of reconsolidating
the bedding or side support material disturbed by shoring removal can be demonstrated.

Damages resulting from improper shoring or failure to shore shall be the sole
responsibility of the Contractor.

7-08.3(1)C

Bedding the Pipe

Pipe zone bedding material shall provide uniform support along the entire pipe barrel,
without load concentration at joint collars or bells. All adjustment to line and grade shall
be made by scraping away or filling in with bedding material under the body of the pipe
and not by blocking or wedging. Bedding disturbed by pipe movement, or by removal of
shoring movement of a trench shield or box, shall be reconsolidated prior to backfill.

Pipe zone bedding shall be as specified in the

Standard Plans

and shall be placed in loose

layers and compacted to 90 percent maximum density. Bedding shall be placed, spread,
and compacted before the pipe is installed so that the pipe is uniformly supported along
the barrel. Lifts of not more than 6 inches in thickness shall be placed and compacted
along the sides of the pipe to the height shown in the

Standard Plans

. Material shall be

worked carefully under the pipe haunches and then compacted.

If the Engineer determines that the material existing in the bottom of the trench is
satisfactory for bedding the pipe, the bedding material specified in the

Standard Plans

not required, provided the existing material is loosened, regraded, and compacted to form
a dense, unyielding base.

7-08.3(2) Laying Pipe

7-08.3(2)A

Survey Line and Grade

Survey line and grade control hubs will be placed in a manner consistent with accepted
practices.

The Contractor shall transfer line and grade into the trench where they shall be carried by
means of a laser beam or taut grade line supported on firmly set batter boards at intervals
of not more than 30 feet. Not less than three batter boards shall be in use at one time.
Grades shall be constantly checked and in the event the batter boards do not line up,
the Work shall be immediately stopped, the Engineer notified, and the cause remedied
before proceeding with the Work. Any other procedure shall have the written approval of
the Engineer.

General Pipe Installation Requirements

7-08

7-08.3(2)B

Pipe Laying – General

After an accurate grade line has been established, the pipe shall be laid in conformity with
the established line and grade in the properly dewatered trench. Mud, silt, gravel, and
other foreign material shall be kept out of the pipe and off the jointing surfaces.

All pipe laid in the trench to the specified line and grade shall be kept in longitudinal
compression until the backfill has been compacted to the crown of the pipe. All pipe shall
be laid to conform to the prescribed line and grade shown in the Plans, within the limits
that follow.

Pipe shall be laid to a true line and grade at the invert of the pipe and the Contractor shall
exercise care in matching pipe joints for concentricity and compatibility. In no case shall
two pipes be joined together with ends having the maximum manufacturer’s tolerance.
The invert line may vary from the true line and grade within the limits stated to develop
uniformity, concentricity, and uniform compression of jointing material provided such
variance does not result in a reverse sloping invert. The limit of the variance at the invert
shall not exceed plus or minus 0.03 feet at the time of backfill. Checking of the invert
elevation of the pipe may be made by calculations from measurements on the top of
the pipe.

The pipe, unless otherwise approved by the Engineer, shall be laid up grade from point
of connection on the existing pipe or from a designated starting point. The pipe shall be
installed with the bell end forward or upgrade. When pipe laying is not in progress, the
forward end of the pipe shall be kept tightly closed with an approved temporary plug.

Where pipe joints must be deflected within the manufacturer’s recommended limits to
accommodate required horizontal or vertical curvature, it shall first be joined in straight
alignment and then deflected as required.

Where pipe joints must be deflected to an amount greater than the manufacturer’s
recommended limits to accommodate required horizontal or vertical curvature, the curves
shall be achieved with a series of tangents and shop fabricated bends, subject to the
approval of the Engineer.

Upon final acceptance of the Work, all pipe and appurtenances shall be open, clean, and
free draining.

7-08.3(2)C

Pipe Laying – Concrete

For concrete pipe with elliptical reinforcement, the markings indicating the minor axis of
the reinforcement shall be placed in a vertical plane (top or bottom) when the pipe is laid.

Page 7-34

General Pipe Installation Requirements

7-08.3(2)D

Pipe Laying – Steel or Aluminum

Pipe with riveted or resistance spot welded seams shall be laid in the trench with the
outside laps of circumferential joints upgrade and with longitudinal laps positioned other
than in the invert, and firmly joined together with approved bands.

Aluminum pipe or pipe arch used in cement concrete shall be painted with two coats
of paint. The paint shall cover all the surfaces in contact with the cement concrete and
extend one inch beyond the point of contact. The aluminum pipe to be painted shall be
cleaned with solvent to remove contaminants. After cleaning, the pipe shall be painted
with two coats of paint conforming to Federal Specification TT-P-645 (primer, paint, zinc
chromate, alkyd vehicle). Aluminized steel pipe will not require painting when placed in
Controlled Density Fill (CDF) or when in contact concrete head walls.

All costs of cleaning and painting the aluminum surfaces as specified shall be included in
the unit Contract price per linear foot for the aluminum pipe or pipe arch.

7-08.3(2)E

Rubber Gasketed Joints

In laying pipe with rubber gaskets, the pipe shall be handled carefully to avoid knocking
the gasket out of position or contaminating it with foreign material. Any gasket so
disturbed shall be removed, cleaned, relubricated if required, and replaced before joining
the sections.

The pipe shall be properly aligned before joints are forced home. Sufficient pressure shall
be applied in making the joint to ensure that the joint is home, as defined in the standard
installation instructions provided by the pipe manufacturer. The Contractor may use any
method acceptable to the Engineer for pulling the pipe together, except that driving or
ramming by hand or machinery will not be permitted. Any pipe damaged during joining
and joint tightening shall be removed and replaced at no expense to the Contracting
Agency.

Care shall be taken to properly align the pipe before joints are entirely forced home.
During insertion of the tongue or spigot, the pipe shall be partially supported by hand,
sling or crane to minimize unequal lateral pressure on the gasket and to maintain
concentricity until the gasket is properly positioned. Since most gasketed joints tend to
creep apart when the end of the pipe is deflected and straightened, such movement shall
be held to a minimum once the joint is home.

Sufficient restraint shall be applied to the line to ensure that joints once home are held
so by compacting backfill material under and alongside the pipe or by other acceptable
means. At the end of the work day, the last pipe shall be blocked in such a manner as may
be required to prevent creep.

General Pipe Installation Requirements

7-08

7-08.3(2)F

Plugs and Connections

Plugs for pipe branches, stubs, or other open ends which are not to be immediately
connected shall be made of an approved material and shall be secured in a place with
a joint comparable to the main line joint, or stoppers may be of an integrally cast
breakout design.

7-08.3(2)G

Jointing of Dissimilar Pipe

Dissimilar pipe shall be jointed by use of a factory-fabricated adapter coupling or a pipe
collar as detailed in the

Standard Plans

7-08.3(2)H

Sewer Line Connections

Storm and sanitary sewer line connections to trunks, mains, laterals, or side sewers shall
be left uncovered until after the Engineer has inspected and approved the Work. After
approval of the connection, the trench shall be backfilled as specified.

7-08.3(2)I

Side Sewer Connections

Where a storm or sanitary side sewer is larger than the trunk, main, or lateral to which
it is to be connected, the connection shall be made only at a standard manhole unless
otherwise provided in the Plans or in the Special Provisions, or unless otherwise
authorized by the Engineer.

7-08.3(3) Backfilling

Placement of pipe zone backfill shall be performed in accordance with these requirements
and the

Standard Plans

. Trenches shall be backfilled as soon after the pipe laying as

possible.

Pipe zone backfill material shall be clean earth or sand, free from clay, frozen lumps, roots,
or moisture in excess of that permitting required compaction. Rocks or lumps larger than
3 inches maximum shall not be used for pipe zone backfill.

Pipe zone backfill shall be placed in loose layers and compacted to 90 percent maximum
density. Backfill shall be brought up simultaneously on each side of the pipe to the top
of the pipe zone. The pipe shall then be covered to the top of the pipe zone and the
materials compacted in a manner to avoid damaging or disturbing the completed pipe.

Backfill above the pipe zone shall be accomplished in such a manner that the pipe will not
be shifted out of position nor damaged by impact or overloading. If pipe is being placed
in a new embankment, backfill above the pipe zone shall be placed in accordance with

Section 2-03.3(14)C

. If pipe is being placed under existing paved areas, or Roadways,

backfill above the pipe zone shall be placed in horizontal layers no more than 6 inches
thick and compacted to 95 percent maximum density. If pipe is being placed in non-
traffic areas, backfill above the pipe zone shall be placed in horizontal layers no more than
6 inches thick and shall be compacted to 85 percent maximum density. All compaction
shall be in accordance with the Compaction Control Test of

Section 2-03.3(14)D

, except

in the case that 100% Recycled Concrete Aggregate is used. When 100% Recycled

Curbs, Gutters, and Spillways

8-04

8-04.3(1)B

Roundabout Cement Concrete Curb and Gutter

Roundabout cement concrete curb and gutter and roundabout splitter island nosing curb
shall be shaped and finished to match the shape of the adjoining curb as shown in the
Plans. All other requirements for cement concrete curb and cement concrete curb and
gutter shall apply to roundabout cement concrete curb and gutter.

8-04.3(2) Extruded Asphalt Concrete Curbs and Gutters

Asphalt concrete curbs, gutters, and spillways shall be constructed of Commercial HMA
as specified in

Section 5-04

. The HMA will have a dense, uniform surface and will fully

retain its shape, grade, and line after placement. Just prior to placing the curb, a tack coat
of asphalt shall be applied to the existing pavement surface at the rate ordered by the
Engineer.

Set forms will not be required for forming gutter if slip-form equipment of a type
approved by the Engineer is used. Gutter shall be shaped and compacted to the required
line, grade, and cross section. Connections to any type of outlet shall be constructed so as
to form a watertight joint.

8-04.3(3) Vacant

8-04.3(4) Metal Spillways

Round metal spillways shall be plain metal drain pipe 8-inch diameter and when specified
in the Contract, the joints shall be sealed with rubber gaskets conforming to the
requirements of

Section 9-04.4(4)

. Half round metal spillways shall be half round metal

culvert pipe of the size, kind, and thickness shown in the Plans.

In the construction of metal spillways, sufficient bands, elbows, and joints shall be
furnished and placed by the Contractor to permit the construction and connection of the
spillways as indicated in the Plans so as to carry the drainage from gutters to the inlets
and spillways without percolation of the water under and around the Structure.

Spillway pipe shall be laid in a trench in the embankment slope and shall not be placed
until after the embankment slopes have been completed and dressed to the lines
prescribed by the Engineer. The lower end of the pipe spillway shall be adequately
protected and supported by hand placed riprap, concrete, or by other means as may be
shown in the Plans. After the spillway pipe has been placed and connected, the trench
shall be backfilled, thoroughly compacted, and the embankment slopes restored to their
original condition.

8-04.3(5) Spillways at Bridge Ends

Where spillways are required to be constructed at bridge ends, they shall be constructed
in the embankment slopes as described above and arranged so that they will connect to
the bridge drains. The pipe shall be plain metal drain pipe 8-inch diameter and the joints
shall be sealed with rubber gaskets conforming to the requirements of

Section 9-04.4(4)

Page 8-58

Curbs, Gutters, and Spillways

8-04.4 Measurement

All curbs, gutters, and spillways will be measured by the linear foot along the line and
slope of the completed curbs, gutters, or spillways, including bends. Measurement of
cement concrete curb and cement concrete curb and gutter, when constructed across
driveways or sidewalk ramps, will include the width of the driveway or sidewalk ramp.

Roundabout splitter island nosing curb will be measured per each.

Except for metal spillways, excavation for these Structures shall be incidental to the items
involved. Structure excavation required for the installation of metal spillways will be
measured in accordance with the provisions of

Section 2-09

Hand placed riprap will be measured in accordance with

Section 8-15.4

8-04.5 Payment

Payment will be made for each of the following Bid items that are included in the
Proposal:

“Cement Conc. Traffic Curb and Gutter”, per linear foot.
“Cement Conc. Traffic Curb”, per linear foot.
“Mountable Cement Conc. Traffic Curb”, per linear foot.
“Dual-Faced Cement Conc. Traffic Curb and Gutter”, per linear foot.
“Dual-Faced Cement Conc. Traffic Curb”, per linear foot.
“Cement Conc. Pedestrian Curb”, per linear foot.
“Roundabout Central Island Cement Concrete Curb”, per linear foot.
“Roundabout Truck Apron Cem. Conc. Curb and Gutter”, per linear foot.
“Roundabout Cement Concrete Curb and Gutter”, per linear foot.
The unit Contract price per linear foot for “Roundabout Cement Concrete Curb
and Gutter” shall be full payment for all costs for the specified Work including
transitioning the roundabout cement concrete curb and gutter to the adjoining curb
shape.
“Roundabout Splitter Island Nosing Curb”, per each.
The unit Contract price per each for “Roundabout Splitter Island Nosing Curb”
shall be full payment for all costs for the specified Work including transitioning the
roundabout splitter island nosing curb to the adjoining curb shape.
“Extruded Curb”, per linear foot.
“Cement Conc. Gutter”, per linear foot.
“Cement Conc. Spillway”, per linear foot.
“Asphalt Conc. Gutter”, per linear foot.
“Asphalt Conc. Spillway”, per linear foot.

Curbs, Gutters, and Spillways

8-04

“Drain Pipe ___ In. Diam.”, per linear foot.
“Half Round Plain St. Culv. Pipe ___ In. Th. ___ In. Diam.”, per linear foot.
“Half Round Tr. 1 St. Culv. Pipe ___ In. Th. ___ In. Diam.”, per linear foot.
“Half Round Plain Al. Culv. Pipe ___ In. Th. ___ In. Diam.”, per linear foot.
“Half Round Tr. Al. Culv. Pipe ___ In. Th. ___ In. Diam.”, per linear foot.
“Hand Placed Riprap”, per cubic yard.
Hand placed riprap will be paid for as provided in

Section 8-15.5

When catch basin gutter pans are required in the Plans, all costs for providing the
widened area of gutter pan shall be included in the curb and gutter Bid item.

8-06

Cement Concrete Driveway Entrances

8-06.1 Description

This Work shall consist of constructing the types of cement concrete driveway entrances
shown in the Plans and in accordance with these Specifications and the

Standard Plans

The widths of the entrances shall be as noted in the Plans. When no width is noted in
the Plans, the entrance shall be constructed to the minimum dimensions shown in the

Standard Plans

8-06.2 Materials

Materials shall meet the requirements of the following sections:
Cement

9-01

Aggregates

9-03

Premolded Joint Filler

9-04.1

8-06.3

Construction Requirements

Cement concrete driveway approaches shall be constructed with air entrained concrete
Class 4000 conforming to the requirements of

Section 6-02

or Portland Cement or

Blended Hydraulic Cement Concrete Pavement conforming to the requirements of

Section 5-05

Driveway entrance concrete may be placed, compacted, and finished using hand methods.
The tools required for these operations shall be approved by the Engineer. After troweling
and before edging, the surface of the driveway entrance shall be brushed in a transverse
direction with a stiff bristled broom. Curing of the concrete shall be in accordance with

Section 5-05.3(13)

. The driveway entrances may be opened to traffic in accordance with

Section 5-05.3(17)

When noted in the Plans, the Contractor shall construct the driveway entrance in two
or more segments to permit access to an existing driveway. At these locations, the
Contractor shall provide a well-graded and drained temporary approach suitable for
vehicular traffic from the abutting Roadway to the existing driveway and a firm surface
for pedestrians crossing the approach. When the concrete in this segment of the entrance
has reached the desired compressive strength, the Contractor shall route traffic over it,
remove the temporary approach, and construct the remaining driveway entrance segment
or segments. The joints between segments shall be filled to full cross-section with ⅜-inch
premolded joint filler.

8-06.4 Measurement

Cement concrete driveway entrances will be measured by the square yard of finished
surface.

Cement Concrete Driveway Entrances

8-06

Standard Specifications for Road, Bridge, and Municipal Construction 2020 (M 41-10) - page 75