The Gujarat Housing Board has decided to construct Housing under "The Affordable Housing Mission" at Hathijan, Ahmedabad, Gujarat submitted a proposal for construction of DHP on the land of Gujarat Housing Board measuring 20000 sq.mts. After discussion, it was finalized to constructed 40 EWS units under PMAY (U) for the beneficiaries on portion of land admeasuring 2350 Sq.mts using emerging / new technology. The proposed DHP will consists of 40 dwelling units in G+3 configuration using one of the emerging technology namely PRECAST CONCRETE CONSTRUCTION SYSTEM - Integrated Hybrid Solution-One.

The DHP has been undertaken as part of PMAY (U). The project is partially funded by Ministry of Housing & Urban Affairs under TSM and remaining share is contributed by state and beneficiaries.

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

The details of the Projects are as under:

Salient Features of the Project:

• Plot Area for DHP         :   2506 Sqmt.
• Total Covered Area      :   2056.80 Sqmt.
• No. of Units/Rooms     :   40 (G+3)
• Carpet Area of a unit   :   35.78 Sqmt.
• Each unit consist of a living room, bed room, lobby kitchen, bath, WC, verandah and separate wash area.

About the Technology

Load bearing 200mm thick interlocking blocks manufactured with special machines, having strength of 75 kg/cm2 made out of cement, coarse sand and flyash. The blocks shall be laid without mortar. However, the first course/layer, the immediate course above lintel band and the course below the floor slab level shall be laid with mortar 1 : 6 (1 cement : 6 coarse sand) or cement slurry.

Intermediate floor / roof shall be in precast R.C. Planks & joists, system. The planks shall be precasted with moulds on vibrating table and pallets in M-25 concrete. The planks shall have 3 nos. 6mm dia main bars and 6mm dia at 200mm c/c distribution bars. The RC planks shall have haunches which shall be filled with M-25 in situ concrete. The joists shall be 150mm wide. The depth and reinforcement shall be as per design and shall be partially precast with M-25 concrete. The RC planks shall be placed on wall to joist, joist to joist and joist to wall. After placing the RC planks, 6mm dia extra bars will be placed through the haunches (2nos. in each RC plank across the joists) providing temporary supports below the joists before laying in-situ concrete. Within 24 to 72 hours of laying slab, in-situ concrete a course/layer of ferrocement 12mm thick with mesh reinforcement shall be laid, mixed with water proofing compound on the slab including the walls area. Thus the total thickness of the effective slab shall be 72mm.

Foundation	Floor Slabs/Roofing
Strip-step footing with plinth bend for earthquake resistant structure Walling Load bearing interlocking blocks (Hydra Form Blocks)	Precast RC Planks and Joists System with screeding.

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