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Explain the Typical Wastewater Characteristics?
Total Suspended Solids = 100 - 350 mg/L (200 mg/l is the typical value)
BOD5 = 100-300 mg/L (200 mg/L is the typical value)
33% of the total solids (ST) are suspended (60% of these suspended solids are settle able and 40% are colloidal) and 67% are dissolved.
Total Solids (ST) = Fixed or Inorganic Solids (SF or SI) + Organic or Volatile Solids (SV or SO)
The solids removed during primary and secondary treatment are referred to as sludge (high solids concentration).
Explain is Vadose Zone - Ground water In an unconfined aquifer, it is the area located above the water table and aquifer, where the soil and rock are not saturated with water.
TIMBER Timber refers to wood utilized for construction works. Actually the word timber is derived from an old English word 'Timbrian' that means 'to build'. A tree that yields
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list some applications of quadratic equation in civil engineering
surveying of building sites with chain
Basic Considerations Governing Selection of Road Alignment: The following considerations shall be kept in view in selecting the road alignment: Roads in Plain Areas (a)
Explain the Dupuit Equations for Unconfined Aquifers Using natural log: Q = ΠK((h 2 ) 2 - (h 1 ) 2 )/ln(r 2 /r 1 ) Using log 10 : Q = K((h 2 ) 2 - (h 1 ) 2 )/((1055)l
State the term - transverse force on concrete We know that in pre-stressed concrete, tendons are placed in a stretched condition and they always would try to regain their origi
(i) A dry soil has a void ratio of 0.65 and its grain exact gravity is = 2.80. What is its unit weight? (ii) Water is added to the sample so that its degree of saturation is 60%
Assessing Maintenance Needs: Maintenance needs can be assessed by a careful inspection of roads at regular intervals, observing defects such as : potholes cracks
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