OPENINGS
701.1Description.
This work consists of constructing PCC curbing.
701.2Materials.
A.PCC, Class B Section 1022
B.Liquid Membrane-Forming Compounds for Curing Section 1045.7
C.1/2-Inch Preformed Expansion Joint Material Section 1042.2.A
D.Bituminous Joint Sealant Section 1042.2.B
701.3Construction.
A.Provide a concrete flatwork technician with an ACI or NRMCA certification, or a certification from
another Department approved certification program, to supervise concrete finishing. Provide the certification to the engineer before placing concrete.
B.Place concrete in accordance with Section 501.3, including the weather limitations in Section 501.3.8.
C.Foundation Preparation.
1.Excavate in accordance with Section 202.3 to the width, depths, and grades shown in the contract.
2.Remove unsuitable material when encountered and replace with approved material.
3.Compact the foundation.
4.When rock is encountered, excavate 6-inches below the bottom of curb and backfill with GABC.
5.Place GABC to the required thickness in accordance with Section 301. D.Slip-forming.
Use molds of required height, width, and shape.
E.Fixed Forms.
1.Use clean wood or metal, extending the full depth of the concrete.
a.Use straight and warp free forms, with a deflection no greater than 1/8-inch in 10-feet.
b.Use forms rigid enough to resist the pressure of plastic concrete, with a deflection no greater
than 1/8-inch in 10-feet.
2.The contractor may use composite material for radius work.
F.Curb Removal and Replacement.
MONOLITHIC MEDIAN, AND CURB OPENINGS
1.Saw cut curb in accordance with Section 762.3. Cut the pavement a minimum of 18-inches from the face of the curb.
2.Remove bituminous concrete pavement, or PCC pavement, and dispose of in accordance with
Section 202.
3.Remove existing curb in accordance with Section 211.3. 4.Construct new curb in accordance with this specification.
5.Perform bituminous patching in accordance with Section 401, or PCC patching in accordance with Section 503 or as otherwise specified by the contract.
G.Placing Concrete.
1.Place concrete in accordance with Section 501.3. 2.Transition the ends of curbs, approaches, exit ends of median islands, and triangular
channelization island curb, in accordance with the Standard Construction Details.
3.Place Type IV polyurethane-bonded recycled rubber expansion joints as follows:
a.To the full curb depth;
b.at a maximum of 150-foot intervals and aligned with adjacent joints;
c.at the beginning and end of radii;
d.on both sides of structures or obstructions; and
e.when confined against rigid structures or pavement.
f.longitudinally between the edge of PCC pavement and face of curb or curb and gutter when
curb is immediately adjacent PCC pavement.
H.Finishing.
1.Finish concrete a minimum of 2-inches below finished grade.
2.Use a wood or magnesium float to rub the surface smooth.
3.Check the flow line of the gutter to ensure positive drainage. Correct deviations in the flow line
greater than 1/8-inch in 10-feet.
4.Match vertical alignment with adjacent surfaces such as curbs and drainage inlets.
5.Correct irregularities in grade or alignment of the front and back edges of the curb greater than
1/4-inch in 10-feet.
6.Round front and back edges in accordance with the Standard Construction Details.
7.Brush longitudinally along the surface.
I.Curing.
Cure in accordance with Section 501.3 and with materials in accordance with Section 1022.6.
J.Joints.
1.Construct contraction joints in accordance with the Standard Construction Details at a maximum
of 10-foot and a minimum of 4-foot intervals using a tool or by saw cutting to a 1/8-inch minimum width and to a depth of 1-inch minimum on all finished surfaces.
MONOLITHIC MEDIAN, AND CURB OPENINGS
2.Align joints with the adjacent pavement joints.
3.Form or tool the face of curbing to allow sealing when the curb is placed adjacent to PCC
pavement, as shown in the Standard Construction Details.
4.Place expansion material in accordance with Section 701.3.G.
K.Form Removal and Backfilling.
1.Remove forms when concrete has cured sufficiently.
2.Backfill in accordance with the contract.
L.Cracked or damaged curbs.
1.For curbs with one hairline crack that does not exhibit signs of displacement, sawcut and seal
the crack as directed by the engineer.
2.For curbs with more than one crack or otherwise damaged curbs, remove and replace the full
curb section between the joints.
M.Adhere to the requirements of Section 501.5.3 Low Strength Concrete Adjustments. 701.4Method of Measurement.
A.The Department will measure PCC Curb and Integral PCC Curb as the number of linear feet
measured along the linear face of acceptably placed and completed curb.
B.The Department will measure PCC Monolithic Median as the number of linear feet measured
along the centerline of the median.
C.The Department will measure curb openings as the number of curb openings installed.
701.5Basis of Payment.
A.The Department will pay the quantity of PCC Curb, Integral PCC Curb, and PCC Monolithic Median
at the contract unit price per linear foot. The Department will pay the quantity of curb opening at the contract unit price for each. Price and payment will constitute full compensation for:
1.Excavating within the template of the item including the foundation;
2.removal and disposal of existing materials;
3.foundation preparation;
4.providing and placing materials;
5.compaction;
6.providing forms and forming;
7.supplying, placing, finishing, and curing PCC;
8.constructing joints;
9.expansion joint material;
10.sealing;
11.backfilling;
12.removing surplus materials; and
MONOLITHIC MEDIAN, AND CURB OPENINGS
13.removing and replacing cracked or damaged curb.
B.The Department will pay the quantity of curb opening at the contract unit price per each. Price
and payment will constitute full compensation for:
1.Excavating within the template of the item including the foundation;
2.removal and disposal of existing materials;
3.foundation preparation;
4.providing and placing materials;
5.compaction;
6.providing forms and forming;
7.supplying, placing, finishing, and curing PCC;
8.constructing joints;
9.expansion joint material;
10.sealing;
11.backfilling;
12.removing surplus materials; and
13.removing and replacing cracked or damaged curb.
C.The Department will pay for:
1.Excavation and embankment outside the template of the item in accordance with Section 202 at the direction of the engineer or as otherwise required by the contact.
2.Rock removal in accordance with Section 202; 3.undercut excavation in accordance with Section 202; 4.PCC removal in accordance with Section 211; 5.saw cutting in accordance with Section 762; and 6.GABC in accordance with Section 301. ITEM DESCRIPTION UNIT 701010 PCC CURB, TYPE 1-2 LF 701011 PCC CURB, TYPE 1-4 LF 701012 PCC CURB, TYPE 1-6 LF 701013 PCC CURB, TYPE 1-8 LF 701014 PCC CURB, TYPE 2 LF 701015 I.PCC CURB AND GUTTER, TYPE 1-2 LF 701016 I.PCC CURB AND GUTTER, TYPE 1-4 LF 701017 I.PCC CURB AND GUTTER, TYPE 1-6 LF
MONOLITHIC MEDIAN, AND CURB OPENINGS
ITEM DESCRIPTION UNIT 701018 I.PCC CURB AND GUTTER, TYPE 1-8 LF 701019 I.PCC CURB AND GUTTER, TYPE 2 LF 701020 I.PCC CURB AND GUTTER, TYPE 3-2 LF 701021 I.PCC CURB AND GUTTER, TYPE 3-4 LF 701022 I.PCC CURB AND GUTTER, TYPE 3-6 LF 701023 I.PCC CURB AND GUTTER, TYPE 3-8 LF 701025 PCC CURB TYPE 2 ROUNDABOUT
LF 701026 PCC MONOLITHIC MEDIAN LF 701027 PCC CURB TYPE 1-2 ROUNDABOUT LF 701031 CURB OPENING, 2’ OPENING EACH 701032 CURB OPENING, 4’ OPENING EACH 701033 PCC CURB, TYPE 1-2, MEDIAN GUARDRAIL LF 701034 PCC CURB, LAYDOWN LF
Referenced in this section
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Source: Delaware Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 356–0 of 786.
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