Telengana State Housing Corporation Limited (TSHCL), Hyderabad had allotted 1085 sq.mts. of land at Nirmithi Kendra, Gachibowli, Hyderabad for the Demonstration Housing Project. Based on the discussions held with the officials of TSHCL the Plan, Sections and Layout Plan of Demonstration Housing Project was finalised.

In order to demonstrate different emerging technologies, the Council constructed, two blocks for 32 Demonstration Houses (G+3) using two different technologies i.e (i) STAY IN PLACE FORMWORK SYSTEM - Structural Stay In Place Steel Formwork System (16 houses) and (ii) LIGHT GAUGE STEEL STRUCTURAL SYSTEM (16 houses) under this project as part of PMAY(U).

The project also includes on-site infrastructure work like internal road, pathways, Septic tank, external electrification and water supply work, horticulture work, drainage & disposal, etc.

The details of the project are as follows:

Project Profile

• No. of houses   :   32 (G+3)
• Carpet area of each unit   :   38.74 sqm. and 39.50 sqm.
• Built up area of each unit including common area   :   53.18 sqm. and 53.10 sqm.
• Technology: (i) STAY IN PLACE FORMWORK SYSTEM - Structural Stay In Place Steel Formwork System (16 houses) and (ii) LIGHT GAUGE STEEL STRUCTURAL SYSTEM (16 houses)
• Each Unit consists of One living room, two bedroom, kitchen and two Bath with WC.
• Includes Earthquake Resistant Features.

About the Technology

Structural Stay In Place Steel Formwork System
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.

Light Gauge Steel Structural System
Light Gauge Steel Framed Structures (LGSF) is based on factory made galvanized light gauge steel components, designed as per codal requirements. The system is produced by cold forming method and assembled as panels at site forming structural steel framework of a building of varying sizes of wall and floor. The assembly is done using special types of screws and bolts. LGSF is a well-established technology for residential construction in North America, Australia and Japan and is gaining ground in India.

LGSF is typically ideal for one to three storey high buildings, especially for residential and commercial buildings. Due to its flexibility, fast construction and durability, this technology has great potential for counties like India. LGSF can be combined with composite steel / concrete deck resting on light steel framing stud walls.

Foundation	Wall/Slab/Roof	Door frames	Window frames	Flooring	Kitchen Counter	Staircase	Wall finishes
RCC column / Coffor wall foundation	Structural stay in place CR steel specially designed formwork system Light Gauge Steel Structural System (LGSF) RCC Beam / LGSFS 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

S.No	Description	Action
1.	Elevation	View
2.	Elevation	View
3.	Ground Floor PLan	View
4.	Ground Floor Plan Coffor Wall	View
5.	Layout Plan	View
6.	Typical Floor PLan	View