Hydrology-Thiessen Polygon Method
A catchment may consist of several rainfall gauge stations. Thiessen polygon method can be used to determine the mean precipitation over that catch…
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Hydrology-Point Rainfall
Rainfall depth data collected by a station can also be presented in the form of point rainfall. It is usually plotted for certain timeframe, such a…
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Construction Materials-Aggregate Specific Gravity
Knowing the aggregate weight at certain moisture level, we can proceed to determine its specific gravities. Specific gravity is the ratio of sample…
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Point Rainfall Frequency
Point rainfall data collected by a station can be processed and produce a helpful tool in predicting future rainfall. First, we need to rearrange the…
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Construction Materials-Aggregate Moisture Content
The weight of aggregate is depending on its moisture level. The moisture conditions can be categorized as: oven dry, air dry, saturated surface dry…
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Hydrology-Hyetograph
A hyetograph is a plot of rainfall intensity against time interval. It can be derived from mass curve, and commonly illustrated using bar charts. …
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