Delaware Administrative Code
Title 2 - Transportation
2000 - Department of Transportation
2400 - Division of Transportation Solutions
2402 - Manual on Uniform Traffic Control Devices (MUTCD)
Part 6 - Temporary Traffic Control
Chapter 6G - TYPE OF TEMPORARY TRAFFIC CONTROL ZONE ACTIVITIES
Section 6G.20 - Vertical Difference

01 (DE Revision) A vertical difference is created whenever a difference in grade of more than 1 inch exists:

02 (DE Revision) Possible causes of vertical differences include, but are not limited to, milling or excavation for paving, repaving lifts, and utility operations.

Guidance:

03 (DE Revision) Operations should be sequenced so vertical differences greater than 2 inches do not exist across a traveled way open to traffic or between adjacent traveled ways open to traffic.

Standard:

04 (DE Revision) Vertical difference treatments shall be based on the criteria indicated in Table 6G-1.

05 (DE Revision) Where a fillet of wedge material is used at the edge of pavement in accordance with Table 6G-1, pavement millings, or a similar suitable material, shall be used for the wedge material.

Guidance:

06 (DE Revision) Where a fillet of wedge material is used between a traveled way and pavement box in accordance with Table 6G-1, base course material should be used for the wedge material and should be placed at no greater than the slope specified in Table 6G-1. The base course material should be compacted after placement.