👉Typical range of Hydraulic Conductivity are as follows:
Soil classification of an aquifer Hydraulic Conductivity (m/day) Drainage Characteristics
Gravel 100-1000 Pervious
Sand 1-10 Pervious
Silt 0.1-0.01 Slightly Pervious
Clay 10^-5 to 10^-6 Impervious
👉 Components of Water Demand:
Domestic Demand : 135 lpcd (litre per capita per day)
Public Demand : 20 lpcd
Industrial Demand : 50 lpcd
Commercial Demand : 20 lpcd
Fire Demand : 15 lpcd
Loss and waste : 50 lpcd
Total = 270 lpcd
👉Fire Fighting Water Demand
👉 Fire Fighting Water Demand Empirical Formulae:
- Buston's Formula
- Kuichling's Formula
- Freeman's Formula
- National Board of Fire Underwriter's Formula
👉 Population Forecasting Methods:
- Arithmetic Increase Method
- Geometric Increase Method
- Incremental Increase Method
- Logistic Curve Method
- Growth Composition Analysis Method
- Master Plan Method
- Decreasing Rate of Growth Method
- Simple Graphical Method
- Comparative Graphical Method
- Ratio Method
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