705PCC SIDEWALK, PEDESTRIAN CONNECTIONS, AND DETECTABLE WARNING SURFACES
DE · 2026 Standard Specifications✓ Full text on BuildSpecBook pages 364–0 Save this section
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SURFACES
705.1Description.
This work consists of constructing PCC sidewalk and reconstructing 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 1045.7
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
7.Finish and cure curb and sidewalk in accordance with Section 701.3.
AND DETECTABLE WARNING SURFACE
8.Backfill sidewalk in accordance with Section 701.3, after removal of forms.
9.Install the 4-inch PVC sleeve for signs at locations shown in the contract.
10.Construct pedestrian connections in accordance with the requirements of the Standard
Construction Details, any modifications of the Standard Construction Details shown on the plans, and to the requirements of Sections 302, 701, and 705.
11.Provide and install detectable warning surfaces in accordance with the requirements of the
Standard Construction Details and in accordance with Section 705.
12.Perform bituminous patching in accordance with Section 401, or PCC patching in accordance
13.The curb and sidewalk components are not to be placed monolithically unless otherwise
directed by the contract or the engineer.
14.Adhere to the requirements of Section 501.5.3 Low Strength Concrete Adjustments.
15.For cracked or damaged sidewalks, remove and replace the complete 5-foot sections between
the joints. 705.3.2 Truncated Dome Detectable Warning Surface and Directional Tactile Surface Indicators.
A.Submit certification that the surface of the system is slip resistant, using 1 of the following
standard methods:
1.ASTM C1028 B “Determining the Static Coefficient of Friction of Ceramic Tile and Other like
Surfaces by the Horizontal Dynamometer Pull-Meter Method.”
2.ASTM D2047 B “Static Coefficient of Friction of Polish-Coated Floor Surfaces as Measured by the
James Machine.”
3.ASTM E303 B “Measuring Surface Frictional Properties Using the British Pendulum Tester.”
4.VOSI V41.21-98 B Universal Specification / Test Method for Slip Resistant Walkways, in the Field
and Laboratory, as measured by a Drag Type Friction Tester Voices of Safety International (VOSI).
B.Use the detectable warning surface pattern shown in the Standard Construction Details or
indicated in the Plans.
C.Use 1 of the following material systems:
1.Precast concrete;
2.fired clay brick paver units; or
3.cast iron plates manufactured with the detectable warning pattern, set in the concrete sidewalk
surface.
D.Fill joints to within 1/4-inch of the surface, using a method approved by the engineer.
E.Anchor the cast iron plates to the sidewalk surface in accordance with the manufacturer's
recommendations.
F.Do not use stamping systems, applied membranes, or ceramic tiles.
AND DETECTABLE WARNING SURFACE
G.Provide a detectable warning surface color in accordance with the DelDOT ‘s Pedestrian
Accessibility Standards for Facilities in the Public Right-of-Way Manual.
H.Construct the base material for the sidewalk section receiving the detectable warning system at a
lower elevation so that the concrete under the detectable warning system is the same thickness as the adjacent sidewalk.
I.Place paver units so the surface is flush with the surrounding ramp and sidewalk surfaces.
K.Place the mortar in accordance with manufacturer’s recommendations.
L.Set paver units in a bed of mortar for adhesion to the sidewalk surface.
1.Use mortar within 30-minutes after adding water. Do not retemper mortar by adding water.
2.Maintain 1/4-inch wide joints, no larger than 3/8-inch. The contractor may use plastic spacers.
3.Keep joints uniform and straight.
M.Maintain clean surfaces and joints.
N.The Department will allow a vertical edge for grade changes up to 1/4-inch.
O.Bevel edges of the system with grade changes in between 1/4-inches and 1/2-inches with a slope
no steeper than 2 to 1.
P.For brick sidewalks, use precast concrete panels or fired brick paver units and:
1.Place units on the same base material and lift thickness as under the brick sidewalk.
2.Place units to achieve a flush surface with the surrounding ramp and sidewalk surfaces.
705.4Method of Measurement.
705.4.1 Sidewalk. The Department will measure the sidewalk quantity as square feet of sidewalk acceptably completed. The template of the sidewalk is defined by the vertical planes located 12-inches outside the neat line perimeter of the sidewalk”. 705.4.2 Truncated Dome Detectable Warning Surface. The Department will measure the quantity of Truncated Dome Detectable Warning Surface as the number of square feet acceptably completed.
705.4.3 Directional Tactile Surface Indicators The Department will measure the quantity of Directional Tactile Surface Indicators as the number of square feet acceptably completed. 705.4.4 Pedestrian Connections.
A.The Department will not measure pedestrian connections constructed in conjunction with new
sidewalk, they will be measured and paid for with other items on the contract.
B.The Department will measure the quantity of reconstructed pedestrian connections as the square
feet of surface area of pedestrian connection acceptably completed. The Department will establish the template area of pedestrian connections by measurement of the top of concrete curb (and gutter), sidewalk, and taper areas shown in the contract.
AND DETECTABLE WARNING SURFACE
705.5Basis of Payment.
705.5.1 Sidewalk.
A.The Department will pay the quantity for sidewalk at the contract unit price per square feet. 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.forms and forming;
7.supplying, placing, finishing, and curing PCC;
8.joints;
9.expansion joint material;
10.sealing;
11.backfill and backfilling;
12.removing surplus materials; and
13.removing and replacing cracked or damaged sidewalk.
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 in accordance with the contract;
7.bituminous pavement patching in accordance with Section 401.
ITEM DESCRIPTION
UNIT
AND DETECTABLE WARNING SURFACE
705001 PCC SIDEWALK, 4” SF 705002 PCC SIDEWALK, 6” SF 705005 PCC SIDEWALK, 8” SF 705008 PEDESTRIAN CONNECTION, TYPE 1 SF 705009 PEDESTRIAN CONNECTION, TYPE 2, 3 AND/OR 4 SF 705010 PEDESTRIAN CONNECTION, TYPE 5 SF 705011 PEDESTRIAN CONNECTION, SPECIAL SF 705012 DIRECTIONAL TACTILE SURFACE INDICATORS SF 705013 TRUNCATED DOME DETECTABLE WARNING SURFACE SF
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Source: Delaware Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 364–0 of 786. View official source ↗
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