The Urban Development Department, Government of Tripura submitted a proposal for construction of DHP on the land of Social Welfare & Education Department measuring 2360 sq.mts. to be used as Shelter for Destitute Women using STAY IN PLACE FORMWORK SYSTEM - Structural Stay In Place Steel Formwork System (COFFOR). The proposed Demonstration Housing Project consists of 40 units in G+1 configuration with other provisions. The DHP is undertaken as part of PMAY (U).

The onsite infrastructure development works include Boundary Wall, CC Road, pavements with interlocking tiles, landscaping, water supply, sewerage, Drainage, rain water harvesting tank, external electrification, Solar street light etc.

The details of the Projects are as under:

Project Profile:

• Plot Area for DHP         :   2360 Sq.mts.
• Total Covered Area      :   1833.74 Sq.mts.
• No. of Units/Rooms     :   40 (G+1)
• Carpet Area of a unit   :   21.86 Sq.mts.
• Each unit consist of room with attached toilet and Pantry
• Other provisions includes Guest Room Medical Room, Care Taker Room, Common Dining Room with Kitchen and Activity Room

About the Technology

This patented Structural Stay in Place Steel Formwork System is known as ‘Coffor’ to build load bearing monolithic concrete wall structures based on shear wall concept. The formwork system comprises of two filtering grids made of rib mesh reinforced by ‘C’ channel vertical stiffeners. The grids are connected by rebar which act as horizontal stiffeners and connector which act as a shear link. The grids on both faces act as sacrificial formwork in which concrete is poured in-situ.

After the erection of formwork panels in alignment, corners, edges of doors and windows frame are closed with rebar positioning & concrete of required grade is poured in the panels. The concreting is done with a pump, bucket or with a shovel loader. The inside and outside walls are finished with cement plaster of suitable grade.
The panels are prefabricated according to a structural plan (based on architectural plans) designed by structural engineers.

Foundation	Walling
Isolated RCC column footing with Plinth beam	Structural Stay in Place Steel Formwork (Coffor) Floor Slabs/Roofing Cast in situ RCC Slab

Door frame/shutters	Window Fame/ Shutter	Flooring	Wall Finishes
Pressed steel door frame with flush shutters PVC door frame with PVC Shutters in toilets.	uPVC frame with glazed panel and wire mesh shutters.	Vitrified tile flooring in Rooms & Kitchen Anti-skid ceramic tiles in bath & WC Kota Stone Flooring in Common area and Staircase	Weather Proof Acrylic Emulsion paint on external walls Oil Bound distemper over POP on internal walls

S.No	Description	Action
1.	DHP Drawings	View