Presentatie gegeven tijdens de woensdagborrel van Sociëteit het Meisjeshuis op 19 november 2008 over de voordelen van het herstel van de stadssingel te Delft
De Stedelijke Jeker (Maastricht), water als drager van kwaliteitNanda Sluijsmans
In mijn stageopdracht wilde ik laten zien hoe men de binnenstad van Maastricht een ruimtelijke en economische impuls kan geven door de Stedelijke Jeker als kwaliteitdrager te zien.
De Stedelijke Jeker (Maastricht), water als drager van kwaliteitNanda Sluijsmans
In mijn stageopdracht wilde ik laten zien hoe men de binnenstad van Maastricht een ruimtelijke en economische impuls kan geven door de Stedelijke Jeker als kwaliteitdrager te zien.
Step by step instructions for completing the one-time registration process for MindTap through Blackboard. Links to and instructions for purchasing the physical/digital textbook or MindTap access are also included.
Screening Hydroplaning Risk Area By Hsd DataDr Wei Liu
According to road safety reports from various RCAs, about 30%-40% of road crashes occurred in wet conditions and among these wet road crashes, at least 50% of the drivers experienced loss-of-control of the vehicle in a partial or full degree, an indication of hydroplaning, which often resulted in serious injury or even fatal accidents. Unfortunately, risk of hydroplaning is often only considered in the design stage of roads and highways by providing sufficient drainage and proper selection of surface materials. During the operation and maintenance of roads and highways, there is still no direct and practical method to quantify hydroplaning risk for existing roads and highways.
Although several vehicle, roadway, and environmental factors affect the probability of hydroplaning, a general rule of thumb for highways is that hydroplaning can be expected for speeds above 70kph where water ponds to a depth of 2.5mm or greater over a distance of 10m or greater. In other words, for any set of driver inputs, tyre conditions and surfacing material, hydroplaning is only a function of water depth and vehicle speed. In this paper, a methodology for identifying and screening of hydroplaning risk area through analyzing the pavement transverse and longitudinal profile measurement from HSD survey will be introduced. Examples will be given to demonstrate that it will be a useful tool for road controlling agencies to evaluate the risk of hydroplaning for their road networks and to plan and carry out necessary maintenance actions to provide a safer road network for the public.
Step by step instructions for completing the one-time registration process for MindTap through Blackboard. Links to and instructions for purchasing the physical/digital textbook or MindTap access are also included.
Screening Hydroplaning Risk Area By Hsd DataDr Wei Liu
According to road safety reports from various RCAs, about 30%-40% of road crashes occurred in wet conditions and among these wet road crashes, at least 50% of the drivers experienced loss-of-control of the vehicle in a partial or full degree, an indication of hydroplaning, which often resulted in serious injury or even fatal accidents. Unfortunately, risk of hydroplaning is often only considered in the design stage of roads and highways by providing sufficient drainage and proper selection of surface materials. During the operation and maintenance of roads and highways, there is still no direct and practical method to quantify hydroplaning risk for existing roads and highways.
Although several vehicle, roadway, and environmental factors affect the probability of hydroplaning, a general rule of thumb for highways is that hydroplaning can be expected for speeds above 70kph where water ponds to a depth of 2.5mm or greater over a distance of 10m or greater. In other words, for any set of driver inputs, tyre conditions and surfacing material, hydroplaning is only a function of water depth and vehicle speed. In this paper, a methodology for identifying and screening of hydroplaning risk area through analyzing the pavement transverse and longitudinal profile measurement from HSD survey will be introduced. Examples will be given to demonstrate that it will be a useful tool for road controlling agencies to evaluate the risk of hydroplaning for their road networks and to plan and carry out necessary maintenance actions to provide a safer road network for the public.