Reporting options - Summary construction

Summary Construction reporting is designed to populate Pavement Management Systems (PMS) with a comprehensive construction overview. It breaks the network into construction segments and reports the typical layer thickness within each segment.



The Summary Construction format reports representative average layer thickness values within construction segments at low cost. This is achieved by identifying construction changes to break the network into units of common construction. Working in this way a data analyst can obtain a reliable typical layer thickness measurement. Because the process does not involve the calculation of each thickness measurement within the construction segment the result is more cost effective, but is not strictly a true statistical average.

Summary Construction provides the pavement engineer with a broad picture from which a series of actions can follow based on knowledge rather than guesswork and assumption. Use it to:

• populate PMS Construction/Inventory Tables


• provide an objective basis for Asset Valuation


• direct coring programmes to typical and anomalous constructions


• get better value from coring by understanding the extent to which the core’s construction applies


• to help you analyse deflection data


• provide a guide to help analysis of deflection data


• identify long life pavements


• improve understanding of surface condition data such as rutting, longitudinal profile and cracking patterns.

Criteria for defining a construction change can be client-specified, but generally a step change in pavement layer thickness or a change in the construction layer type or condition would register as a construction change. A minimum construction segment length threshold can be set to avoid reporting unnecessarily short segments; this is particularly applicable to urban networks. The default minimum length reported is 100m.

A confidence rating is provided for each construction segment to reflect the quality of the GPR data (affected by road condition) and the availability and quality of calibration data (cores, DCP, trial pits, FWD data etc).


Building a better network construction picture is an on-going process. Aperio encourage the re-analysis and re-issue of Summary Construction Reports as new cores are targeted.