Provision of new Portable toilets for Watch Tower including construction of Septic Tank inside operational area at Coimbatore Airport

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, for all lift, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering All work up to plinth level : 1:4:8 (1 Cement : 4 coarse sand (zone-III) : 8 graded stone aggregate 40 mm nominal size). all complete as per the direction of Engineer-in-charge.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering All work up to plinth level : 1:2:4 (1 Cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size). all complete as per the direction of Engineer-in-charge.

Centering and shuttering including strutting, propping etc. and removal of form for all heights : Foundations, footings, bases of columns, etc. for mass concrete. all complete as per the direction of Engineer-in-charge.

Providing, supplying, transporting, unloading, positioning , achoring, assembling, and commissioning of factory manufactured pre-fabricated puf Toilet of Minimum Size:1219 mm x 1219 mm x 2134 mm ( W X D X H ) with the following specification 1. Wall: 50mm Thick Puf Wall 2. Roof: 30mm Thick (Single lope) 3. Polymeric Section False Ceiling 4. 200 litrs Water Tank top of Roof to be fixed on top of additional Ms Structure and necessary electrical plug point, sqitches, Tube Light , Bulk Head Lamp, Water Tap, EWC, Internal Plumbing and Tile Flooring all as per Particular Specification and directions of EIC

Providing, supplying, transporting, and erecting a 2000-liter capacity prefabricated PVC (Polyvinyl Chloride) or high-grade polyethylene septic tank, designed for underground installation and long-term durability. The unit shall be manufactured from UV-stabilized, corrosion-resistant, and chemical-resistant polymer material, ensuring a leak-proof and root-resistant structure with Capacity of 2000 liters effective volume. The Material should be Heavy-duty, multi-layered PVC/Polymer molded shell with design which is Cylindrical or specialized modular shape with ribbed walls for high structural strength against soil pressure. The installation shall be complete in all respects, including:Inlet/Outlet: Provision for standard PVC inlet and outlet pipe connections with minimum 110 mm diameter.Inspection Manhole should be Integrated manhole cover with a threaded or bolt-down airtight lid for easy desludging and maintenance.There shoild be Provision for a vent pipe connection to ensure the release of biogas.Partitioning: Internal baffle walls (if required by manufacturer specification) to facilitate effective anaerobic digestion and solid-liquid separation.

Constructing soak pit 1.20x1.20x1.20 m filled with brickbats including S.W. drain pipe 100 mm diameter and 1.20 m long complete as per standard design.

Providing and laying unplasticised PVC (6 kgf/cm2) in sewer line, vent pipe conforming to IS 13592 type B . as per standards as directed by EIC with required adhesive special etc. complete as per the direction of Engineer-in-charge.The rate is inclusive of cutting, finishing etc., with required slope as per the direction of Engineer-in-charge : External Work 110mm dia