TRIANGULAR CHANNELIZING ISLANDS SECTION 702 352 SECTION 702 — TRIANGULAR CHANNELIZING ISLANDS
702.1Description.
This work consists of constructing triangular channelizing islands.
702.2Materials.
A.Bituminous Patching Section 40 1
B.Truncated Dome Detectable Warning Surfaces Section 705
C.Delineator Section 1073.1
D.Bituminous Pavement Section 1014
E.PCC, Class B Section 1022
F.Liquid Membrane -Forming Compounds for Curing Section 10 45.7
G.Expansion Joint Material Section 1042 .2.A
702.3Construction.
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.Triangular Channelizing Island.
1.Saw cut existing bituminous concrete pavement or PCC pavement in accordance with Section
762.3 and:
a.Saw cut pavement 18 inches from the proposed face of curb.
b.With the approval of the engineer, the contractor may saw cut at the proposed face of the
curb in locations adjacent to PCC pavement.
2.Remove bituminous concrete pavement, or PCC pavement, and dispose of in accordance with
3.Prepare the foundation in accordance with Section 701.3.
4.Place GABC for curb placement at the location and depths shown on the plans in accordance
with Section 301.3.
5.Layout and pour PCC Type 2 Curb in accordance with Section 701.3, unless otherwise specified
on the plans.
6.Place concrete, joints, finish and cure PCC, and PCC curb and sidewalk in accordance with
Section 701.3.
7.Backfill curb in accordance with Section 701.3, after removal of forms or upon completion of the
slip-form operation.
8.Install the 4 -inch PVC sleeve for signs at locations shown in the contract.
TRIANGULAR CHANNELIZING ISLANDS SECTION 702 353 9. Construct pedestrian connections in accordance with the Standard Construction Details and modifications of the Standard Construction Details shown in the contract, and in accordance with Sections 302 and 705.
10.Provide and place Truncated Dome Detectable Warning Surface in accordance with the Standard
Construction Details and Section 705.
11.Perform bituminous patching in accordance with Section 40 1 and PCC patching in accordance
with Section 503 as shown in the contract or otherwise match the existing pavement structure.
12.Provide and install tubular marker delineators on all corners of the island and in accordance
with Section 824.
a.Provide 28 -inch tall and 2 -inch wide orange tubular markers unless otherwise specified in the
contract or as directed by the engineer.
b.Place the maker on the islan d surface parallel to the roadway surface. Do not place the
tubular marker in the roadway.
13.Do not place curb and sidewalk monolithically unless otherwise directed by the contract or the
engineer.
702.4Method of Measurement.
The Department will measure the quantity of Triangular Channelizing Islands as the number of square feet, from face of curb to face of curb placed and accepted. The Department will measure Truncated Dome Detectable Warning Surface in accordance with Section 705.
702.5Basis of Payment.
A.The Department will pay the quantity of Triangular Channelizing Islands at the contract unit price
per square foot. Price and payment constitute full compensation for:
1.Excavation within the template of the item including the foundation ;
2.removal and disposal of existing materials;
3.foundation preparation;
4.providing and placing all 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.sign sleeves;
12.construction of pedestrian connections within the limits of the island;
13.backfill and backfilling;
14.removal of surplus materials;
TRIANGULAR CHANNELIZING ISLANDS SECTION 702 354 15. removal and replacement of cracked or damaged curb to the joints; and
16.providing and placing delineators.
B.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 contract ;
2.rock removal in accordance with Section 202 ;
3.undercut excavation in accordance with Section 202 ;
4.Truncated Dome Detectable Warning Surface in accordance with Section 705 ;
5.PCC removal in accordance with Section 211;
6.saw cutting in accordance with Section 762;
7.GABC in accordance with Section 301; and
8.bituminous pavement patching in accordance with Section 40 1.
ITEM DESCRIPTION UNIT 702000 TRIANGULAR CHANNELIZING ISLANDS SF PCC SIDEWALK, PEDE STRIAN CONNECTIONS, SECTION 705 AND DETECTABLE WARNING SURFACE 355 SECTION 705 — PCC SIDEWALK, PEDESTRIAN CONNECTIONS, AND DETECTABLE WARNING SURFACES
705.1Description.
This work consists of constructing PCC sidewalk and pedestrian connections and placing Truncated Dome Detectable Warning Surfaces and Directional Tactile Surface Indicators .
705.2Materials.
A.PCC, Class B Section 1022
B.1/2-Inch Preformed Expansion Joint Material Section 1042 .2.A
C.Bituminous Joint Sealant Section 1042 .2.B
D.Liquid Membrane -Forming Compounds for Curing Section 10 45.7
E.Mortar Section 1047.6
705.3Construction
705.3 .1 PCC Sidewalk and Pedestrian Connections .
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 with special attention to the weather limitations
described in Section 501.3.8.
C.Construction of PCC Sidewalk and Pedestrian Connections.
1.Saw cut in accordance with Section 701.3.
2.Remove bituminous concrete pavement, or PCC pavement, and dispose of in accordance with
Section 202.
3.Prepare the foundation in accordance with Section 701.3.
4.Place GABC at the location and depths shown in the contract and in accordance with Section
301.3.
5.Layout and place concrete in accordance with Section 701.3, unless otherwise specified in the
contract.
6.Joints.
a.Construct contraction joints by tool or saw cutting at a maximum width of 1/2 -inch. Place at 5 -
foot intervals, with the exception of pedestrian connection items, when concrete has cured sufficiently.
b.When there is sidewalk behind the curb, align curb joints to match sidewalk joints.
c.Place Type IV polyurethane -bonded recycled rubber expansion joint in accordance with
Section 701.3.G.
7.Finish and cure curb and sidewalk in accordance with Section 701.3.
Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 362–365 of 779.