Assessment Form B-52 Problems

A surfacing with coarse aggregate clearly visible is described as Medium texture type.

In a Fine texture type, the coarse aggregate in the surfacing is always visible.

If two types of seal are applied on a segment and the texture varies across the width of the road, it should be marked as Varying.

A new 6.7mm single seal is an example of Varying texture type.

Fine slurry seal, sand seal, and smooth asphalt are examples of Fine texture type.

If a road segment with a 13mm single seal is bleeding in the wheel paths, the texture should be marked as Coarse.

A coarse textured surface may need a pre-treatment like a fine slurry before resurfacing.

Texture and voids are key factors considered in the condition index calculation for road surfaces.

The texture depth is not relevant to skid resistance under wet conditions.

The list of abbreviations for surfacing types in Table B.1 includes AM, AG, and AS.

Texture can be described as fine, medium-coarse, and extra coarse according to Table B.2.

TMH9: Visual Assessment Manual is presented in Part A of the document.

Table B.1 provides TRH 14 codes for different surfacing types.

Table B.3 describes various degrees of surface patching.

Table B.6 details the degrees of surfacing cracks.

Table B.8 provides information about degrees of Binder Condition.

Table B.4 lists the description of Texture Types.

Table B.9 indicates Aggregate Loss Activity.

Undulations in the road can be caused by patches, potholes, corrugations, and failures.

Degree 1 undulation results in a road profile that is smooth and comfortable to ride on.

Degree 3 undulation has no effect on riding quality and driving speed.

Degree 5 undulation results in a very poor and uncomfortable ride on the road.

The purpose of rating undulations is to highlight differential settlement, consolidation, or heaving related deformation.

Minor problems resulting in general unevenness of the road should be assessed under the undulation item.

Skid resistance is mainly determined by the hardness of the road surface.

The ability of the road surface to prevent skidding is known as skid resistance.

Potholes, patching, undulations, and corrugation are all problems that result in poor riding quality.

According to the description in Table B.23, a road with 'Very good' skid resistance is suitable for roads carrying high-speed traffic.

The surface texture depth of a road is related to the smoothness of the stones on the surface.

Roads with extensive rutting and uneven patching often have a comfortable driving speed higher than the speed limit.