Estimating flow rates through individual outlets of siphonic roof drainage systems

Siphonic roof drainage system analysis utilising unsteady &ow theory

Over the past three years a UK EPSRC research programme has been underway at Heriot-Watt University investigating siphonic roof rainwater systems. This text aims to report the principle 8ndings of the project to date. A brief description of experimental and numerical aims is given. The priming procedure which occurs in an idealised system is documented. The test procedures employed are describe...

Acid Mine Drainage: Flow-Through Experiments Examining Pyrite Dissolution Rates

Estimating Individual Discount Rates With Field Experiments

We estimate individual discount rates with respect to time streams of money using controlled laboratory experiments. These discount rates are elicited by means of field experiments involving real monetary rewards. The experiments were carried out across Denmark using a representative sample of 268 people between 19 and 75 years of age. Individual discount rates are estimated for various househo...

Roof Drainage: Not my problem ... Maybe

Many strucrural engineers are surprised to learn that the In~rnotional Building Code (IBC, 2009) requires the roof structure to be engineered for standing water weight in the vicinity of the drains and scuppers regardless of roof slope. In addition, some low-slope roofs also require special attenlion for water weight and stiffness for safety against ponding failures or protection against accele...

Investigation into the performance characteristics of mult–

Previous research at Heriot-Watt University has led to a better understanding of the performance characteristics of siphonic rainwater systems, with particular reference to the priming of such systems. This has resulted in the development of a numerical model capable of accurately simulating the priming phase of single outlet siphonic rainwater systems. However, the majority of installed system...