Prior to paving, what position should the screed be set to?

Setting the screed to a null position prior to paving is essential for ensuring an even and consistent thickness of the asphalt layer. In the null position, the screed is leveled so that it can uniformly distribute the asphalt over the existing surface without any initial elevation or tilt. This position provides a baseline from which adjustments can be made during the paving process to accommodate any variations in the pavement profile.

Having the screed in this neutral or null position allows for optimal control over the final mat thickness and smoothness. If the screed is set at a steep angle or a raised angle, it can lead to inconsistencies in the asphalt layer, such as uneven thickness or difficulties in achieving the desired compaction of the material. Adjusting the screed during paving is crucial; however, starting from a neutral position is fundamental for establishing a quality pavement.