Surfacing work has a major influence on the life span of a structure. An uneven surface, or inconsistent layer thickness or cross-slope, may lead to premature failure. The need to succeed in surfacing work is therefore essential to the economy of a project. The range includes small pavers for street work, where the accent is on manoeuvrability, to large pavers with extendible screeds for multi-lane highways, where capacity is a key factor. There are wheeled and tracked versions to cover all job-site conditions.