Traffic Safety of Kerbs

In the goal of creating a safer environment for bicyclists and pedestrians, there is an on-going debate about the usefulness of kerbs as a separation between these two modes. Right angled kerb types separate well but are not forgiving. Sloped and levelled kerb types are more forgiving, but the extent to which they separate is unknown. A video...

Flood hazard reduction by mangroves

Although mangrove forests have proven to contribute to wave dissipation significantly, these ecosystem are threatened mainly by the expanding aquaculture. International or nationwide applied greenbelt policies are often used for the preservation of the mangroves and hence the flood hazard reduction, without taking local (hydrodynamic) conditions...

Aeolian transport on a beach: Testing the AeoLiS aeolian sediment transport model against the observed recovery of Fire Island

Fire Island has been monitored since Hurricane Sandy (2012). During that period, Fire Island showed recovery (accretion on the island). Behaviour of the recovery is not yet well-known. Main processes during the recovery are also not known. Therefore, the emphasis of this thesis is on the understanding of the main processes of the recovery of...

Research on the safety level of a diaphragm wall in river dikes, using a Monte Carlo analysis

Feasibility of Velocity Measurements by a Drifter in the Yangon River

Myanmar is dealing with a large data deficit, which is in contrast with the substantial need for it. The implementation of measuring techniques to obtain hydro- and morphodynamic data is an upcoming process. Measuring velocities can be valuable for calibrating models or giving estimates of sedimentation and erosion. An example of a measuring...

Delft3D-FLOW Model of the Yangon Port Area

Large sedimentation is observed in the Yangon port area in Myanmar and this sediment is blocking the entrance channel into the port. The entrance channel is dredged intensively to keep it navigable but insight into the sedimentation processes is limited. The sedimented area rises above the water level in dry season and is known as the Inner Bar....

Double curved precast load bearing concrete elements

The construction of free form building stagnated, due to the high construction cost of it. Double curved surfaces are only applied at projects with a high profile and projects above average budget during years. The problem with double curved surfaces is mainly the formwork. The present days used techniques to construct these formworks are...

Blast-resistant building design: Methods and solutions for the blast-resistant design of buildings subjected to an LPG tank truck explosion

Because of the wish for, and the necessity of the multiple use of space the amount of tunnels and buildings in close proximity of roads are increasing. Meanwhile the number of transports of dangerous goods is also increasing. Therefore it would be desirable to have a highway network which is fully accessible for the transport of dangerous goods....

A structural solution in reinforced concrete for the roof structure of the Al Ghubaiba ferry terminal

The city of Dubai has grown extensively in the last decades. The growth of Dubai’s infrastructure has not kept pace with the growth of the city itself, which results in traffic jams and overcrowding of public transport facilities. To make the Dubai area (city and suburbs) more accessible, a ferry network is being developed to provide...

Probabilistische analyses van aanbestedingsonzekerheden

De aanleiding voor dit afstudeerwerk was de constatering van Holland Railconsult dat hun begrotingen vaak lager waren dan het laagste bod bij een aanbesteding en dat zij vermoedden dat er een grotere marge rondom de begroting benodigd is om met een bepaalde betrouwbaarheid het laagste bod te vangen dan men in eerste instantie dacht. Men wilde...

Long wave generation and behavior on a plane sloping beach

This thesis studies the relation between short wave groups and long wave motion in the shore-normal case on a uniformly sloping bottom. The short wave groups can be described through two time scales; the time scale of the individual waves and the time scale of the groups. The energy of the individual waves is dissipated through wave breaking and...

Intertidal beach level estimation from video images

Since 1992 nearshore hydrodynamics and coastal morphology have been studied from ARGUS video images, collected every hour at eight beach locations worldwide. Identification of the waterline from these images would enable us to obtain an impression of the intertidal beach bathymetry, and hence to monitor intertidal beach morphodynamics. In this...

Evolution of beach profiles under random waves

Cross-shore sediment transport is an important phenomenon in coastal engineering, which mainly accounts for the short-term changes in the coastline. To study on- and offshore transport the evolution of the beach profile is considered. For investigation of the beach profile small-scale physical models are often used. A problem in using a physical...

Energieverloop en golfopstuwing bij brekende onregelmatige golven: Metingen en berekeningen

A description is given of a model developed for the prediction of the dissipation of energy in random waves breaking on a beach. The dissipation rate per breaking wave is estimated from that in a bore of corresponding height, while the probability of occurrence of breaking waves is estimated on the basis of a wave height distribution with an...