For the purpose of designing a well point system for lowering ground water table in a sandy silt deposit, the coefficient of permeability of the soil is to be determined. Which one of the following methods would be most suitable ?
Which of the following are associated with alum coagulation ? 1. A decrease of alkalinity in treated water 2. Formation of hydroxide flocs of aluminium 3. A slight decrease of pH in treated water 4. An increase of permanent hardness Select the correct answer using the codes given below :
Consider the following statements : For an over-reinforced (singly reinforced) rectangular RC section. 1. the lever arm will be less than that for a balanced section. 2. the maximum stress developed by steel would equal the allowable stress in steel. 3. the maximum stress developed by concrete would equal allowable stress in concrete. Of these statements :