Bituminous Concrete Binder and Surface Course Class I

406.21 Surface Tests. The completed surface course will be tested for smoothness in the wheel paths with a 5-m (16-ft.) straightedge. Surface variations of the mainline pavement shall not exceed 5 mm (3/16 inch). Mainline pavement is defined as all pavement other than ramps which will be posted for speeds of 70 km/h (40 mph) or less, acceleration and deceleration lanes, crossovers, side street returns, and other miscellaneous pavement surfaces as determined by the Engineer. In all areas other than mainline pavement, surface variations shall not exceed 10 mm (3/8 inch).

The smoothness test will not be performed on binder courses, but the Engineer reserves the right to require corrective measures when obvious surface variations are evident.

For each variation in the surface course that exceeds the maximum permissible specified above but is less than 20 mm (3/4 inch), a deduction will be made in the tonnage of surface course mixture measured for payment as specified in the following table:

Binder and/or Surface Course Plan Thickness, mm	Surface Course Mixture Deduction Per Variation, metric ton
(Existing Surface Not Reprofiled)
70 or more	2
Less than 70	1
(Existing Surface Reprofiled)
All	2

In all cases where the variation in surface course equals or exceeds 20 mm (3/4 inch), the entire area affected shall be removed and replaced with fresh surface course mixture at the entire expense of the Contractor.

The Contractor shall furnish a 5-m (16-ft.) straightedge and shall provide for its jobsite transportation. The cost of furnishing the straightedge and providing for its jobsite transportation shall be considered as included in the unit price bid for the various items of bituminous concrete surface course involved, and no additional compensation will be allowed.