MASS HOUSING & PRECASTING USING HOLLOW CORE SLAB

IS : 10297 -1982
(Reaffirmed 2003)
Edition 1.1
(2006-12)
Indian Standard
CODE OF
PRACTICE FOR DESIGN AND CONSTRUCTION
OF FLOORS AND ROOFS USING PRECAST
REINFORCED/PRESTRESSED CONCRETE
RIBBED OR CORED SLAB UNITS
(Incorporating Amendment No. 1)
© BIS 2007
B U R E A U O F I N D I A N S T A N D A R D S
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
Price Group 4
9 / IS 5751 : 1984 Specification for Precast Concrete Coping Blocks / 2007
10 / IS 5758 : 1984 Specification for Precast Concrete Kerbs, Channels, Edgings, Quadrants and Gutter Aprons / 2005
11 / IS 5820 : 1970 Specification for precast concrete cable cover / 2007
12 / IS 6061 : Part III : 1981 Code of Practice for Construction of Floor and Roof with Joists and Filler Blocks - Part III : With Precast Hollow Clay Block Joists and Hollow Clay Filler Bl / 2007
13 / IS 6061 : Part IV : 1981 Code of Practice for Construction of Floor and Roof with Joists and Filler Blocks - Part IV : With Precast Hollow Clay Block Slab Panels / 2007
14 / IS 6523 : 1983 Specification for Precast Reinforced Concrete Door and Window Frames
15 / IS 6523 : 1983 Specification for Precast Reinforced Concrete Door and Window Frames / 2007 / 2
16 / IS 9375 : 1979 Specification for precast reinforced concrete plant guards / 2007
17 / IS 9872 : 1981 Specification for precast concrete septic tanks / 2007
18 / IS 9893 : 1981 Specification for precast concrete blocks for lintels and sills
19 / IS 9893 : 1981 Specification for precast concrete blocks for lintels and sills / 2007 / 1
20 / IS 10297 : 1982 Code of practice for design and construction of floors and roofs using precast reinforced/prestressed concrete ribbed or cored slab unit / 2008 / 1
21 / IS 10297 : 1982 Code of practice for design and construction of floors and roofs using precast reinforced/prestressed concrete ribbed or cored slab unit
22 / IS 10505 : 1983 Code of practice for construction of floors and roofs using precast concrete waffle units
23 / IS 10505 : 1983 Code of practice for construction of floors and roofs using precast concrete waffle units / 2008 / 1
24 / IS 12440 : 1988 Specification for precast concrete stone masonry blocks / 2005
25 / IS 12592 : 2002 Precast Concrete Manhole Cover and Frame - Specification / 1
26 / IS 12592 : Part 1 : 1988 Specification for precast concrete manhole covers and frames: Part 1 Covers
27 / IS 12592 : Part 2 : 1991 Specification for precast concrete manhole covers and frames: Part 2 Frames
28 / IS 13356 : 1992 Specification for precast ferrocement water tanks up to 10000 litres capacity / 2007
29 / IS 13990 : 1994 Specification for precast reinforced concrete planks and joist for flooring and roofing / 2005
30 / IS 13994 : 1994 Design and Construction of Floor and Roof with Precast Reinforced Concrete Planks and Joists - Code of Practice / 2005
31 / IS 14143 : 1994 Specification for prefabricated brick panel and partially precast concrete joist for flooring and roofing / 2005
32 / IS 14201 : 1994 Specification for precast reinforced concrete channel unit for construction of floors and roofs / 2005
33 / IS 14213 : 1994 Code of practice for construction of walls using precast concrete stone masonry blocks / 2005
34 / IS 14215 : 1994 Design and Construction of Floors and Roofs with Precast Reinforced Concrete Channel Units - Code of Practice / 2005
35 / IS 14241 : 1995 Precast Reinforced Concrete L-panel for Roofing - Specification / 2005
36 / IS 15658 : 2006 Precast Concrete Blocks for Paving - Specification
MASS HOUSING & PRECASTING USING HOLLOW CORE SLAB
OR Tee BEAMS WITH HOLLOW BLOCKS
A. HOLLOW CORE SLAB - PAGE 1
·  / The development of Mass Housing has become a matter of Great urgency to provide shelters to our people. A breakthrough in housing technology is necessary to build houses at affordable cost on mass scale. The technology of complete fabrication will greatly speed up housing construction on mass scale. However, it may not result in cost reduction. As such. Appropriate technology based on use of indigenous resources has to be developed. Partial Prefabrication employing the use of prefab building components, particularly for flooring can reduce the cost as well as time of construction. The success can be achieved once we have traversed some part pf learning curve (after constructing few buildings). The prefab floor slabs can rest on insitu RC frames or load bearing walls. Keeping in mind the above parameters, an attempt has been made to study two types of precast slabs for use in Mass Housing as well as in industrial plants.
(a) Hollow Core Slab.
(b) Inverted Tee Beams with Hollow Blocks.
·  / Hollow Core Slabs (HCS) are favorites of both, the Structural Engineers and the Contractors the world over. The cost of HCS is comparable with that of solid slabs and is usually available off the self in standard width of 1200 mm. The HCS are produced in North America and Europe by extrusion process and are of prestressed concrete. The high cost of machinery and infrastructure prohibits the construction of HCS @ a centralized precasting plant in India. The HCS that we are proposing is of reinforced concrete, up to a maximum span of 6.0 m and easy to mass produce at site without any special machinery or resource. The code for design and construction of precast HCS units is IS 10297 - 1982. However, our design does not wholly confirm to IS 10297.
ISOMETRIC VIEW OF HOLLOW CORE SLAB
TYP. SECTION THROUGH HOLLOW CORE SLAB
SHOWING STEEL
TYP. JOINTS BETWEEN HOLLOW CORE SLAB
MASS HOUSING & PRECASTING USING HOLLOW CORE SLAB
& Tee BEAMS WITH HOLLOW BLOCKS
B. INVERTED TEE BEAMS WITH HOLLOW BLOCKS - PAGE 2
·  The Inverted Tee Beam and Hollow Core Filler Block construction conforms to IS 6061 Part 1. This prefab system requires precasting of Inverted Tee Beams and placing Hollow Blocks between them. A 50 mm topping completes the floor construction. This system can span up to 4.50 m. Before placing hollow blocks and casting topping concrete, the Inverted Tee Beam shall be centrally propped for a period of 7 days. The beauty of this system lies in its simplicity.
ISOMETRIC VIEW OF INVERTED TEE BEAM
SECTION THROUGH SLAB
PRECAST COLUMN TO BASE CONNECTION BY
ANCHOR BOLTS
PRECAST COLUMN TO BASE CONNECTION IN A SOCKET
PRECAST COLUMN TO COLUMN CONNECTION BY
WELDED STEEL BEARING FACES
PRECAST COLUMN TO COLUMN CONNECTION BY BOLTS
BEAM TO BEAM CONNECTION FOR
COMPOSITE ACTION BY WELDING
BEAM TO BEAM CONNECTION BY
INSITU CONCRETE JOINT
BEAM TO BEAM CONNECTION WITH NOTCHED BEAM ENDS
JOINTS BETWEEN INTERNAL &
EXTERNAL WALL PANELS
VERTICAL JOINTS BETWEEN INTERNAL WALL PANELS
BEAM TO COLUMN CONNECTION BY
STEEL BEARING PLATES
BEAM TO COLUMN CONNECTION BY
STEEL COVERED FACES
BEAM TO COLUMN CONNECTION BY TIE RODS OR
HIGH TENSILE BARS