It was considered dÃ©classÃ© to refer to one's own townhouses, estates or villas (or those of friends) as mansions and modern etiquette books still advise that the terms house, big house or great house be used instead.
Waste weir. A waste weir on a navigable canal is a slatted gate on each canal level or pound, to remove excess water and to drain the canal for repairs or for the winter shutdown.
A weir is a device for measuring flow in an open channel flow. Weirs are frequently used for flow measurement in open unpressurized channels such as wastewater systems and sewers.Weirs and flumes can be used to measure flow in open channels such as plant effluents or sewage flows.A weir is a device for measuring flow in an open channel flow.