Kerala Rural Water Supply And Sanitation Agency-KRWSA has published Tender For Construction Of Individual Gray Water Management Systems In Marayoor Grama Panchayath Of Idukki District. Submission Date for this Tender is 07-02-2023. Water Treatment Plant Tenders in marayoor Kerala. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Gray Water Management Systems |
| 2 | Earthwork excavation in all kinds of soil of size 120x 120 cm with depth 150 cm conveying depositing the soil within initial lead of 50m, filling the pit with 225 mm B/s for 30 cm high and 65 mm B/s for next 30 cm. Supplying , conveying and placing in position precast concrete circular rings 3 nos of dia 60 cm and height 30cm filling the gap between rings and earth surface with 20 mm B/s as per direction of Engineer in charge . Top of the rings covered with precast concrete cover slab of thickness 7.5 cm. Construct a boundary wall with brick of height 20 cm and width 10 cm around the pit, Construct a platform as size 120cmx120cm with cement concrete 1:2:4 with 20 mm b/s and provide boundary with brick work of size 20 cm height and 10 cm thickness as shown in the drawing attached, plastering the brick work with CM 1:6 12 mm thick and finishing with paint as per instruction. Construct an inspection chamber of size 45 X 45 cm with brick work in between platform and filter chamber. Supplying and fixing 75 mm Class 3 pipe from platform to inspection chamber and inspection chamber to filter chamber (average length 1.5m) |
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