193 SECTION 411
411.01 Description
This work consists of milling pavement surface.
411.02 Equipment
Equipment Section Milling Machine 156.03
411.03 Materials
Reserved.
411.04 Construction Requirements
Remove deleterious material fr om the pavement before milling. Mill the surface parallel to the centerline, beginning at the centerline and progressing outward to the edge of pavement. If using the adjacent lane for traffic, do not leave a longitudinal drop off in place for greater than one day. Provide a smooth trans ition to the original pavement surface when stopping. Mill the surface to prevent water from ponding on surface. Provide a milled surface free of irregularities exceeding 1/4 inches when measured with a 10 foot straightedge. Remove loose material from the milled sur face before opening to traffic. Coordinate milling and paving operations so that no section of milled roadway has public or construction traffic operating on it for more than 5 days. If public or construction traffic operates on the milled surface for more than 5 days, repair the roadway as directed by the Engineer at no additional cost to the Department.
411.05 Method of Measurement
The Engineer will measure, as specified in Section 109.01, “Measurement of Quantities”.
411.06 Basis of Payment
Pay Item Pay Unit Milling Pavement Surface Ton or Square Yard Such payment is full compensation for furnishing all materials, equipment, labor, and incidentals to complete the work as specified. Section 420 194 SECTION 420 BITUMINOUS SEAL COAT
420.01 Description
This work consists of an application of bitumen followed by an application of cover coat material on a prepared surface.
420.02 Equipment
Equipment Section Self-Propelled Pneumatic -Tired Rollers 151.01 A.3 Aggregate Trucks 152.01 C Bituminous Tank Truck 152.01 E Bituminous Equipment 154 Liquid Bitumen Distributors 154.02 B Aggregate Spreader 154.02 C Use a broom with a positive means of controlling the vertical pressure on the broom head.
420.03 Materials
Item Section Aggregate 816 Bitumen 818.02 E
420.04 Construction Requirements
A.General. Begin seal work after May 15 and on or before September 1. Allow material to cure as shown in Table 420-01 before applying seal coat materials. Table 420 -01 Curing Period Material Type Curing Period Prime Coat 4 days Asphalt Cement Pavements 7 days Emulsion Pavements 15 days Schedule the work so that the last bitumen application of the day is sufficiently cured to allow installation of the short-term pavement marking before sunset.
B.Preparation of Surface.
1.General. Prepare the surface by removing loose dirt and deleterious material .
Source: North Dakota Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 228–228 of 550.