In response to proposal of the Ministry of Housing & Urban Affairs, Govt. of India to partner the Demonstration Housing Project in the State, the Govt. of Bihar designated Biharsharif Nagar Nigam as nodal agency for the demonstration project. The land measuring 1350 sqm. was allotted for the demonstration project in Biharsharif by local administration. The technology, plan, sections, layout plan of Demonstration Housing Project was finalised in discussion with Biharsharif Nagar Nigam. BMTPC has completed construction of 36 Demonstration Houses (G+2) using emerging technology namely, STAY IN PLACE FORMWORK SYSTEM - Structural Stay In Place Steel Formwork System.

Besides Pradhan Mantri Awas Yojana (Urban), the other Partnering & Funding agencies for the project are Department For International Development (DFID) & National Housing Bank (NHB). DFID and NHB is working on “Making affordable housing market work for faster & sustained economic growth” in eight identified low income States in India and one of the strategies is to test innovative technologies and approaches for Green construction. Under this strategy, NHB and DFID have become partners with BMTPC in demonstration housing project implemented in Biharsharif and provided partial financial support.

The project also includes on-site infrastructure work such as internal road, pathways, boundary wall, septic tank, external electrification and water supply work, horticulture work, drainage & disposal, etc.

The details of the project are as follows:

Project Profile

• Number of Houses   :   36 (G+2)
• Carpet area of each unit   :   29.67 sqm.
• Built area of each unit including common area   :   45.54 sqm.
• Technology: STAY IN PLACE FORMWORK SYSTEM - Structural Stay In Place Steel Formwork System
• Each residential unit consists of a multi-purpose room, a bedroom, kitchen, separate bathroom and W.C.
• Includes Earthquake Resistant Features.

About the Technology

This patented structural stay in place 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	Wall/Slab/Roof	Door frames	Window frames	Flooring	Kitchen Counter	Staircase	Wall finishes	Others
RCC column foundation (isolated footings)	Structural Stay-in-Place CR Steel Specially Designed Formwork System (Coffor) for walls (load bearing) with concrete on both sides RCC Slab	Pressed Steel Door Frame instead of wood Flush door shutters as wood substitute PVC door frame & shutter in toilet	MS Section window frame with guard rail and glazed shutter	Ceramic tile flooring in rooms Ceramic tile flooring in WC & Bath Kota stone in passage	RCC cooking counter top with marble	RCC staircase with kota stone flooring	Acrylic distemper on internal wall surface Weather resistant paint on external wall surface	Pathways with concrete pavers

S.No	Description	Action
1.	Elevation (Type A)	View
2.	ELEVATION (Type B & C)	View
3.	Layout Plan	View
4.	Floor Plan Unit-A	View
5.	Floor Plan unit B & C	View
6.	Floor Plan unit B & C	View
7.	Sections (Type-A)	View
8.	Sections (Type-B & C)	View