replacement of old 200 mm dia swg line to 250 mm dia swg sewer line from h.no.8-4-373/1 to h.no.8-4-373/21 and h.no.8-4-373/44 to h.no.8-4-373/55 (hanuman temple line) situated at old shastry nagar area for improvement of sewerage system under erragadda s