Design 3 units of grit chamber for peak flow condition to serve for a population of 100,000 . Town planning unit has also addressed the state's government decision to construct a general hospital which can occupy number of 2,000 beds. Given detention time is 3 hours, depth is 5m and length to width ratio is equal to 4 . State all assumptions as addressed in Malaysian Standard 1228. a) By considering wastewater flow from residentials and hospital, compute the size of each grit chamber including the freeboard and total volume of tank. (6 marks) b) Following question 1a, compute the surface overflow rate (SOR) when only 2 chambers are in operation. (4 marks) Water demand for various premises (MS 1228) Design 3 units of grit chamber for peak flow condition to serve for a population of 100,000 . Town planning unit has also addressed the state's government decision to construct a general hospital which can occupy number of 2,000 beds. Given detention time is 3 hours, depth is 5m and length to width ratio is equal to 4 . State all assumptions as addressed in Malaysian Standard 1228. a) By considering wastewater flow from residentials and hospital, compute the size of each grit chamber including the freeboard and total volume of tank. (6 marks) b) Following question 1a, compute the surface overflow rate (SOR) when only 2 chambers are in operation. (4 marks) Water demand for various premises (MS 1228)