STATES

Andra predesh, Karnataka, tamil nadu, kerala, goa, dam an and diu, dadra & nagar haveli,  andaman & nicobar islands, lakshwadeep and pondicherry.

EXISTING CONDITIONS

AND

CONSTRUCTION

PRACTICES

This zone covers areas of poor quality soil for brick, red soil, lateritic soils, coastal marine soil and some hilly areas. Some areas are having very thick forestation and have two seasons of monsoons. The houses are made with soil blocks, lateritic blocks, bricks, stone walls, and the roofs are with RCC Mangalore tiles and RBC.

INNOVATION OF

MATERIALS,

COMPONENTS

AND

TECHNOLOGIES

·       Instead of mud blocks for walling, stabilized clay interlocking blocks with cement /lime/ bitumen shall be produced.  Stone or concrete blocks for walling.

·        Production of good quality bricks from interior soils by adding opening materials comprising of cinder/ grog/flyash.

·        In place of RR masonry, solid concrete blocks of 30x20x15 cm and 30x15x15 cm with designed concrete mixes using 50 mm aggregate/stone spalls or hollow concrete blocks of 40x20x20 cm shall be used. The partition wall block shall be 30x1 Ox10 cm solid or 40x20x10 cm hollow.

·        Precast cement concrete blocks with laterite aggregates can be produced in 30x20x15 cm and 30x1Ox10 cm

Foundation

·        Burnt clay bricks in cm1:6

Wailing

·       Rat-trap bond walling with burnt bricks which saves 25% bricks and mortar in plastering can be used as filler walls in RC framed structure.

·        19 cm thick burnt brick wall for buildings upto 2 storeys provide around 20% saving in bricks and mortar and greater floor area for the same plinth area can be used or as filler walls in R.C. framed structure.

·        Hollow concrete blocks or solid concrete blocks for walling instead of RR masonry saves in cubic content of masonry thereby reducing weight on foundations and achieving savings in foundation as well as masonry walling. It will provide speedier construction and greater floor area for the same plinth area

Lintels

·        75 mm thick precast RCC lintels, with or without sunshades, can be provided in brick or block masonry walls.

·        RC plinth bands, lintel bands and roof band using cement concrete M20 concrete.

Doors and

Windows

·        Braced and battened doors of secondary species timber with pivots at top and bottom can be provided with or without any frame.

·        RCC frames and shutter for doors and windows can be provided.

·        Ferrocement shutters for doors

Roofing

·        Precast RCC joist with prefab brick panels / RC plank / funicular shell / Precast Jackarch panel and concrete panels in roofs along with prefab brick panel system can be provided.

·        Cast in-situ RC solid or filler slabs with RCC grid beams and hollow tiles or Mangalore tiles.

·        Precast channel units of RCC or ferrocement especially for 'panchayat-ghar' / school building /health centres/post office / bank can be provided.

·        AC/CGI sheets with purlins of steel/ RCC /  ferrocement.

Flooring

·        PCC 1 :2:4 flooring 25 mm thick over a base course of lean concrete (1:5:10) 75 mm thick

Sanitation

·        Single stack system of plumbing.

·        G.!. I PVC pipes for water supply.

·        CII PVC soil I waste pipes