Related Experiment Video
Updated: Aug 18, 2026

Design and Construction of an Urban Runoff Research Facility
Published on: August 8, 2014
A system to test the ground surface conditions of construction sites--for safe and efficient work without physical
Ernst Koningsveld1, Maarten van der Grinten, Henk van der Molen
1TNO Work and Employment, PO Box 718, AS Hoofddorp 2130, The Netherlands. e.koningsveld@arbeid.tno.nl
Abstract:
Ground surface conditions on construction sites have an important influence on the health and safety of workers and their productivity. The development of an expert-based "working conditions evaluation" system is described, intended to assist site managers in recognising unsatisfactory ground conditions and remedying these. The system was evaluated in the period 2002-2003. The evaluation shows that companies recognize poor soil/ground conditions as problematic, but are not aware of the specific physical workload hazards. The developed methods allow assessment of the ground surface quality and selection of appropriate measures for improvement. However, barriers exist at present to wide implementation of the system across the industry. Most significant of these is that responsibility for a site's condition is not clearly located within contracting arrangements, nor is it a topic of serious negotiation.
Related Concept Videos
Slump Test
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
Non-destructive Tests for Concrete Strength
Taping Over Different Ground Profiles
Design Example: Managing Concrete Workability
To address...
Compacting Factor test
The procedure begins by placing concrete into the upper hopper without any compaction. Once filled, the bottom door of this hopper is opened,...
Design Example: Maintaining Level of an Embankment

