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LOW COST
 CONSTRUCTION
  TECHNIQUES
     PROPOSED
    TECHNIQUES
         &
LITERATURE STUDIES
FUNICULAR ROOF




FUNICULAR ROOFS-AN ALTERNATE TO RCC ROOFS
THE FUNICULAR SHELL ROOF IS ONE SUCH COMPRESSION
STRUCTURE, WHICH ENSURES CONSERVATION OF NATURAL
RESOURCES BY UTILISING WASTE MATERIALS EFFECTIVELY AND
OPTIMISING THE USE OF EXPENSIVE STEEL AND CEMENT.
FURTHER, THE ARCH DISTRIBUTES
THE POINT LOAD IN ALL DIRECTION EQUALLY THUS, IS ABLE TO
WITHSTAND IMPACT LOADING AT ANY POINT.
•DIAGONAL G RID OF FUNICULAR SHELL GIVES THE ILLUSION OF
A LARGER SPACE.
•ELIMINATE USE OF HIGH-ENERGY STEEL REINFORCEMENT
USED IN THE CONVENTIONAL RCC ROOF.
•ALLOWS EFFICIENT USE OF WASTE MATERIALS AND PROVIDES
PERSONALITY, COLOUR AND TEXTURE.
• MINIMISES REQUIREMENT OF INTERNAL PLASTERS.
• PROVIDES ROOFING AT A LOWER COST.
! A DOUBLY CURVED STRUCTURE ON EDGE
BEAM ENSURES OPTIMAL UTILISATION OF STEEL
AND CEMENT.
! CAN BE DEMOULDED EVERY 48 HOURS.
! A SIMPLE YET SPLENDID ROOFING SYSTEM
USING NATURAL MATERIALS AND TECHNOLOGY
AS OPPOSED TO THE MONOTONOUS AND
COMPLEX CONVENTIONAL SYSTEM.
! FUNICULAR SHELLS CAN TAKE ANY SHAPE-
SQUARE, RECTANGLE, TRAPEZIUM, TRIANGULAR
OR ANY OTHER SHAPE. THE KNACK LIES IN THE
CASTING OF THE MOULD.
! THE UPPER HALF OF THE EDGE BEAM IS
REQUIRED TO HOLD THE STIRRUPS. IT IS CAST
ALONG WITH THE FUNICULAR SHELL;
THEREFORE, IT CAN ALSO BE A TRIANGULAR
SECTION.
! THE FUNICULAR SHELL CAN CARRY VARIOUS
CONDUITS, TOILET PIPES IN THE AREA ABOVE
THE BRICK -BAT LAYER. THESE CAN RUN ALONG
THE PERIPHERY WHERE THE MAXIMUM DEPTH
IS AVAILABLE.
! FUNICULAR SHELL ROOF FACILITATES THE
INSTALLMENT OF FIXTURES LIKE- CEILING FANS,
LIGHT FIXTURES ETC. A SKYLIGHT CAN BE
INTRODUCED IN THE ROOF. THIS CAN BE
ACHIEVED BY LEAVING A HOLLOW WHILE
CASTING, USING THE INHERENT STRENGTH OF A
RING IN COMPRESSION.
! THE FUNICULAR SHELL ALLOWS AMPLE
FLEXIBILITY IN DESIGN
GEODESIC DOMES




•THE BASIC TRIANGLE OF AN ICOSAHEDRON IS SUBDIVIDED
INTO SMALLER TRIANGLES AND EACH NODE LIFTED TO MEET
THE SURFACE OF THE SPHERE.
• THE MORE THE SUB-DIVISIONS, THE SMOOTHER THE DOME.
EACH SIDE OF THE SUBDIVIDED TRIANGLE RESULTS IN A CHORD
FACTOR, WHICH IS MULTIPLIED BY THE RADIUS TO GIVE THE
STRAIGHT LENGTH OF EACH MEMBER.
•EVEN THOUGH AN ICOSAHEDRON HAS BEEN TAKEN AS THE
BASIC STARTING CONFIGURATION, ANY POLYHEDRA CAN BE
USED BUT THE NUMBER OF VARIATIONS IN PLATE IS LIKELY TO
INCREASE DEPENDING ON THE POLYHEDRA TAKEN FOR THE
BASIC GEOMETRY.
•THE NUMBER OF VARIATIONS IN THE JOINT PLATES IS EVIDENT.
GEODESIC DOMES




! SIMPLE MILD STEEL PLATES ARE USED, WHICH ARE EASY TO
FABRICATE CONSIDERING ONLY A HOLE AND A SLOT HAVE TO
BE MADE IN IT.
! SINCE THE PLATES ARE DEPRESSING THE STRUCTURAL STEEL
NO SUB-STRUCTURE IS REQUIRED TO ACCOMMODATE
ROOFING MATERIAL
! THE TOP OF THE STRUCTURAL MEMBER SERVES FOR THE SEAT
OF THE ROOFING MATERIAL.
! A SIMPLE HOLE AND SLOT IN THE PLATES PROVIDE FOR
VARIATIONS IN ANGLES. THE HOLE FIXES THE DISTANCE AND
THE SLOT PROVIDES ADJUSTMENT FOR THE ANGLES.
! BY CURVING THE INNER AND OUTER PLATES AND MOVING
THE SLOT AND THE HOLE BY FEW MILLIMETRES CLOSER
TO THE CENTRE, THE BOLTS ARE MADE TO CONVERGE
TOWARDS THE CENTRE OF THE SPHERE.
! MEMBERS CAN BE DOUBLED IN DEPTH IF REQUIRED.
A FRAMES
•ARE WELDED FROM INCEPTION.
THESE MEMBERS ARE MORE RESILIENT
THAN REINFORCED CEMENT
CONCRETE AND HAVE A LARGER
STRENGTH EVEN WITHOUT THE
CONCRETE COMPONENT.
•THIS FORM OF REINFORCEMENT
CONSUMES 30% LESS STEEL.
•THEY PROVIDE FOR A SIMPLE
ASSEMBLY OF BEAMS WITH
CONTINUITY BARS AT JUNCTIONS IN
VARIOUS DIRECTIONS AND REQUIRE
MINIMUM FORMWORK FOR FILLING.
•THEY ARE STABLE WITHOUT
CONCRETE AS CONCRETE IS REDUCED
TO A FILLER MATERIAL.
•THE MEMBERS CAN BE FILLED WITH
CONCRETE AT ANY POINT OF TIME
SUBSEQUENTLY.
SWARAN SINGH BLOCK

•TAKE A SIMPLE, MANUALLY
OPERATED BLOCK MAKING MACHINE
AS AVAILABLE WITH MOST OF THE
BUILDING CENTRES
•TAKE A STIFF PVC SHEET OR RED
MUD PLASTIC SHEET CUT TO THE
SIZE OF THE BASE OF THE MOULD.
• COAT IT WITH USED MOBIL OIL TO
PREVENT ADHESION AND
FACILITATE EASY DEMOULDING
FROM THE SURFACE OF THE BLOCK.
•STONE PIECES OF DIFFERENT
COLORS AND ARRANGE THEM IN
PATTERNS AS MAY BE DESIRED FOR
THE PURPOSE OF ARTICULATION OF
MATERIALS.
•PREPARE A 1: 3 MIX OF CEMENT
AND SAND MORTAR. POUR THE
MORTAR EVENLY OVER THE STONE
CHIPS
•THE VIBRATION HELPS
INTEGRATION OF THE STONE
•PIECES WITH THE CEMENT MORTAR
TO FORM AN IMPERMEABLE
DIAPHRAGM..
•PREPARE ANOTHER MIX OF MUD
WITH 2% CEMENT OR 5% LIME OR
THE COMBINATION OF THE TWO.
THIS MIX FORMS THE MAJOR
PORTION OF THE BODY OF THE
BLOCK. .
•TAKE A JUTE PIECE LITTLE
SMALLER THAN THE SIZE OF
THE BASE AND DIP IT IN
CEMENT SLURRY. PLACE
THE JUTE PIECE IN THE
MOULD AND FILL THE REST
OF THE MOULD WITH THE
SAME MIX TO ABOUT 2/3 RD
OF THE MOULD AND ADD
ANOTHER LAYER OF JUTE
DIPPED IN CEMENT SLURRY.
•NOW FILL THE MOULD TO
THE TOP. LOCK THE LID AND
USE THE COMPRESSOR TO
COMPRESS THE BLOCK
•SURFACE OF THE WALL AND
WILL REQUIRE A FLASH
COAT LATER IF AT ALL, ONLY
TO EVEN OUT THE SURFACE.
INTERLOCKING HOLLOW
  CONCRETE BLOCKS
VENE BLOCKS
•THE VENE BLOCK IS ESSENTIALLY AN ADOBE BLOCK MAKING
MECHANISM THAT IS SIMPLE AND
EFFICIENT.
•IT COMPRISES OF A MOULD MADE OF TIMBER. THE MOULD IS USED
TO MAKE THE ADOBE BLOCKS RIGHT WHERE THE WALL IS TO BE
ERECTED, AND RELIES ON A SIMPLE NON-MECHANISED
PROCEDURE.
•THE MOULD IS PLACED WHERE REQUIRED AND THEN EARTH MIXTURE
IS POURED IN AND COMPACTED WITHIN THE MOULD. ONCE THE
MOULD IS FILLED AND ALL THE EARTH WITHIN COMPACTED, THE
MOULD IS LIFTED OUT AND MOVED AHEAD TO MAKE THE NEXT BLOCK.
•THE SAME PROCESS IS REPEATED. THE MOULD ENSURES THAT THE
BLOCKS ARE LAID PRECISELY AND GIVES IT A
CLEANER FINISH THAN THE ROUGH, HAND COMPACTED ADOBE WALLS.
•BY INTEGRATING THE RAM LOCHAN TILE INTO THE VENE BLOCK
MAKING PROCESS, PLACING THE TILE INTO THE MOULD BEFORE WE
START COMPACTING THE EARTH, WE PROTECT THE ADOBE WALL
FROM
EROSION.
•THE RAM LOCHAN TILE IS A FABRICATED ON SITE A SIMPLE MOULD.
TO ACCOMMODATE THIS 10 MM TILE TILE, THE SIZE OF THE VENE
BLOCK
MOULD IS INCREASED SLIGHTLY.
• BOTH THE REGULAR AND THE CORNER MOULDS ARE MODIFIED IN
THIS MANNER. THE RAM LOCHAN TILE IS ALSO MODIFIED
TO ALLOW FOR TWO DOVETAIL LOCKS.
•FOR THE CORNERS ONE OF THE DOVETAILS IS MADE SHORTER TO
ALLOW
FOR A CLEAN JOINT.THE LOWER DOVETAIL OF THE TILE ALLOWS FOR A
PRECISE OVERLAPPING OF THE TILES.
•THE RAM LOCHAN TILE IS INSERTED INTO THE VENE
BLOCK MOULD DURING CONSTRUCTION AND IS MADE
TO OVERLAP THE LOWER COURSE BY HALF AN INCH ,
FILLER SLAB
COST REDUCTION
            TECHNIQUES
1 FOUNDATION
•   NORMALLY THE FOUNDATION COST COMES TO ABOUT 10 TO
    15% OF THE TOTAL BUILDING AND USUALLY FOUNDATION
    DEPTH OF 3 TO 4 FT. IS ADOPTED FOR SINGLE OR DOUBLE
    STOREY BUILDING AND ALSO THE CONCRETE BED OF 6″(15
    CMS.) IS USED FOR THE FOUNDATION WHICH COULD BE
    AVOIDED.
•   IT IS RECOMMENDED TO ADOPT A FOUNDATION DEPTH OF 2
    FT.(0.6M) FOR NORMAL SOIL LIKE GRAVELY SOIL, RED SOILS
    ETC.,
•   USE THE UNCOURSED RUBBLE MASONRY WITH THE BOND
    STONES AND GOOD PACKING.
•   SIMILARLY THE FOUNDATION WIDTH IS RATIONALIZED TO 2 FT.
    (0.6M).
•   TO AVOID CRACKS FORMATION IN FOUNDATION THE
    MASONRY SHALL BE THOROUGHLY PACKED WITH CEMENT
    MORTAR OF 1:8 BOULDERS AND BOND STONES AT REGULAR
    INTERVALS.
•   IT IS FURTHER SUGGESTED TO ADOPT ARCH FOUNDATION IN
    ORDINARY SOIL FOR EFFECTING REDUCTION IN
    CONSTRUCTION COST UP TO 40%.
•   THIS KIND OF FOUNDATION WILL HELP IN BRIDGING THE
    LOOSE POCKETS OF SOIL WHICH OCCURS ALONG THE
    FOUNDATION.
•   IN THE CASE OF BLACK COTTON AND OTHER SOFT SOILS IT IS
    RECOMMEND TO USE UNDER REAM PILE FOUNDATION WHICH
    SAVES ABOUT 20 TO 25% IN COST OVER THE CONVENTIONAL
    METHOD OF CONSTRUCTION.
REAMED PILE FOUNDATION
ARCH FOUNDATION
2 WALLING
•WALL THICKNESS OF 6 TO 9″ IS RECOMMENDED FOR ADOPTION IN
THE CONSTRUCTION OF WALLS ALL-ROUND THE BUILDING AND 41/2 ”
FOR INSIDE WALLS.
• IT IS SUGGESTED TO USE BURNT BRICKS WHICH ARE IMMERSED IN
WATER FOR 24 HOURS AND THEN SHALL BE USED FOR THE WALLS
3 RAT – TRAP BOND WALL
•IT IS A CAVITY WALL CONSTRUCTION WITH ADDED ADVANTAGE OF
THERMAL COMFORT AND REDUCTION IN THE QUANTITY OF BRICKS
REQUIRED FOR MASONRY WORK.
•BY ADOPTING THIS METHOD OF BONDING OF BRICK MASONRY
COMPARED TO TRADITIONAL ENGLISH OR FLEMISH BOND MASONRY, IT
IS POSSIBLE TO REDUCE IN THE MATERIAL COST OF BRICKS BY 25% AND
ABOUT 10TO 15% IN THE MASONRY COST.
•BY ADOPTING RAT-TRAP BOND METHOD ONE CAN CREATE
AESTHETICALLY PLEASING WALL SURFACE AND PLASTERING CAN BE
AVOIDED.
COMPARISON
• 4 CONCRETE BLOCK WALLING
•   IN VIEW OF HIGH ENERGY CONSUMPTION BY BURNT BRICK IT IS
    SUGGESTED TO USE CONCRETE BLOCK (BLOCK HOLLOW AND SOLID)
    WHICH CONSUMES ABOUT ONLY 1/3 OF THE ENERGY OF THE
    BURNT BRICKS IN ITS PRODUCTION.
•    BY USING CONCRETE BLOCK MASONRY THE WALL THICKNESS CAN
    BE REDUCED FROM 20 CMS TO 15 CMS.
•     CONCRETE BLOCK MASONRY SAVES MORTAR CONSUMPTION,
    SPEEDY CONSTRUCTION OF WALL RESULTING IN HIGHER OUTPUT
    OF LABOUR, PLASTERING CAN BE AVOIDED THEREBY AN OVERALL
    SAVING OF 10 TO 25% CAN BE ACHIEVED.
5 SOIL CEMENT BLOCK TECHNOLOGY
•IT IS AN ENERGY EFFICIENT METHOD OF CONSTRUCTION WHERE SOIL
MIXED WITH 5% AND ABOVE CEMENT AND PRESSED IN HAND
OPERATED MACHINE AND CURED WELL AND THEN USED IN THE
MASONRY.
•THIS MASONRY DOESN’T REQUIRE PLASTERING ON BOTH SIDES OF
THE WALL.
•THE OVERALL ECONOMY THAT COULD BE ACHIEVED WITH THE SOIL
CEMENT TECHNOLOGY IS ABOUT 15 TO 20%
•6 DOORS AND WINDOWS
•IT IS SUGGESTED NOT TO USE WOOD FOR DOORS AND WINDOWS
AND IN ITS PLACE CONCRETE OR STEEL SECTION FRAMES SHALL BE
USED FOR ACHIEVING SAVING IN COST UP TO 30 TO 40%.
•SIMILIARLY FOR SHUTTERS COMMERCIALLY AVAILABLE BLOCK
BOARDS, FIBRE OR WOODEN PRACTICAL BOARDS ETC., SHALL BE USED
FOR REDUCING THE COST BY ABOUT 25%.
•BY ADOPTING BRICK JELLY WORK AND PRECAST COMPONENTS
EFFECTIVE VENTILATION COULD BE PROVIDED TO THE BUILDING AND
ALSO THE CONSTRUCTION COST COULD BE SAVED UP TO 50% OVER
THE WINDOW COMPONENTS.
•ALUMINIUM, IRON, CONCRETE FRAMES CAN BE USED




•7 LINTELS AND CHAJJAS
•THE TRADITIONAL R.C.C. LINTELS WHICH ARE COSTLY CAN BE
REPLACED BY BRICK ARCHES FOR SMALL SPANS AND SAVE
CONSTRUCTION COST UP TO 30 TO 40% OVER THE TRADITIONAL
METHOD OF CONSTRUCTION.
• BY ADOPTING ARCHES OF DIFFERENT SHAPES A GOOD
ARCHITECTURAL PLEASING APPEARANCE CAN BE GIVEN TO THE
EXTERNAL WALL SURFACES OF THE BRICK MASONRY.
LAURIE BAKER
LAURIE BAKER, AN ARCHITECT FROM
BIRMINGHAM,    NOW    SETTLED  IN
THIRUVANANTHAPURAM,           HAS
EFFECTIVELY COMBINED TRADITIONAL
TECHNIQUES    WITH     INDIGENOUS
INNOVATIONS AND HAS MANAGED TO
BRING    DOWN    THE    COST   OF
CONSTRUCTION BY HALF.

HIS TECHNIQUES NOT ONLY USE CHEAPER
MATERIALS BUT ALSO ELIMINATE
REDUNDANT DETAILS FROM THE DESIGN.

CONCRETE IS RARELY USED. MANGALORE
TILES ARE USED FOR THE ROOF WHICH
MAKES IT LIGHT AND INEXPENSIVE.
• HIS APPROACH AND SIMPLE PRINCIPLES TO LOW COST
  HOUSING ARE GANDHIAN, WHICH CAN BE ADOPTED BY
  EVERY BUILDER. THE FOLLOWING ARE THE MAINSTAY OF
  DESIGN AND CONSTRUCTION OF HIS HOUSES.
• PLANNING OF SPACE– LESSER WALLS, MULTIPLE USES OF
  SPACE, SHORT SPANS OF ROOF, AGGLOMERATION OF
  BUILDING SERVICES, FLEXIBILITY IN GROWTH.

• LOCAL BUILDING MATERIAL– BRICKS, TILES, LIME,
  SURKHI, TIMBER, THATCH, STONE, PALM, MUD.

• BRICKS AND JALIS – PLAY OF LIGHT AND SHADE,
  UNIDIRECTIONAL VISION.
• UNPLASTERED WALLS.
• LINTELS AND ARCHES.
• ATTENTION TO DETAILS.
•   BAKER’S WORKS INCLUDE, PRIVATE RESIDENCES,
    SOME INSTITUTIONAL BUILDINGS, LIKE ‘CENTER FOR
    DEVELOPMENT STUDIES’, KERALA. HE IS VERY ACTIVE
    IN THE WORKS OF ALL THE BUILDING CENTERS
    WORKING IN KERALA AS WELL AS IN THE OTHER
    PARTS OF COUNTRY. RATHER IT WAS HIS INITIAL
    EFFORT TO PROMOTE THE LOW COST HOUSING IN
    INDIA, WHERE HOUSING IS A BIG PROBLEM.

•   HIS TECHNIQUES NOT ONLY USE CHEAPER
    MATERIALS BUT ALSO ELIMINATE UNNECESSARY
    DETAILS FROM THE DESIGN. CONCRETE IS SPARINGLY
    USED. MANGALORE TILES ARE USED FOR THE ROOF
    WHICH MAKES IT LIGHT AND INEXPENSIVE.

•   HIS PROJECTS FOR LOW COST BUILDINGS INCLUDE

1. CENTER   FOR  DEVELOPMENT   STUDIES –
   TRIVANDRUM
2. 'THE HAMLET', LAURIE BAKER'S HOME
   THIRUVANANTHAPURAM,
CENTER FOR DEVELOPMENT
    STUDIES - TRIVANDRUM -1975
•        LESLIE      BAKER’S
  ‘MASTERPIECE,’ THE CENTRE
  FOR DEVELOPMENT
  STUDIES IN KERALA, IS A 10
  ACRE CAMPUS AT A COST OF
  RS15 LAKHS,
  DEMONSTRATED           THE
  EFFECTIVENESS OF HIS PLAN.
• THE INSTITUTE INCLUDES
 A RESEARCH INSTITUTE.

 A    GRADUATE      SCHOOL
  DEDICATED TO UTILIZING
  THE STUDY OF ECONOMICS
  TO HELP THE POOR.
MAIN FEATURES OF THIS BUILDING:
• HE DESIGNED THE BUILDINGS AT
  THE CENTRE TO PRACTICALLY
  COOL THEM.
• HE RENDERS JALIS, A PERFORATED
  WOODEN SCREEN FOUND IN
  TRADITIONAL INDIAN
  ARCHITECTURE, IN BRICK;
• THE OPEN GRILLWORK ALLOWS
  COOL BREEZES TO WAFT INTO THE
  INTERIOR WHILE FILTERING
  HARSH, DIRECT SUNLIGHT.
• SOME BUILDINGS INCLUDE A
  SERIES OF SMALL COURTYARDS
  CONTAINING SHALLOW POOLS IN
  THE CENTER, WHOSE
  EVAPORATION HELPS COOL THE
  AIR.
• PAYING CLOSE ATTENTION TO THE
  EXISTING SITE AS HE BEGAN TO
  DESIGN THE PROJECT, BAKER LEFT
  AS MANY COCONUT PALM TREES
  IN PLACE AS POSSIBLE TO CAST
  COOLING SHADE ONTO THE
  CAMPUS.
• THE COMPUTER CENTRE AT THE
  CENTRE FOR DEVELOPMENT
  STUDIES,
  THIRUVANANTHAPURAM. HERE
  BAKER      EVOLVED        AN
  INNOVATIVE     SYSTEM     OF
  CURVED DOUBLE WALLS TO
  SAVE ON COST AND TO
  CONSERVE THE ENERGY .
• IN EVALUATING THE CAMPUS
  FOR THE CENTRE, BAKER
  PLANNED ROADS ALONG THE
  LOWER, WHILE FOOTPATHS
  WERE     ROUTED       ALONG
  NATURALLY         OCCURRING
  ELEVATED AREAS; FOLLOWING
  THE NATURAL TOPOGRAPHY
  HELPS TO LIMIT EROSION AND
  DESPOILMENT       OF     THE
  ENVIRONMENT.
• BRICKWALLS WERE LEFT
  UNPLASTERED AND BRICK
  CORBELLING WAS USED
  RATHER     THAN      MORE
  EXPENSIVE       CONCRETE
  LINTELS.
• WITH HIS MASTERY OVER HIS
  MEDIUM, BAKER CREATES A
  VARIETY OF TEXTURES AND
  PATTERNS     BY     SIMPLE
  MANIPULATION OF THE WAY
  IN WHICH BRICKS ARE
  PLACED IN THE WALL.
• THE ARCHITECTURE OF THIS
  ACADEMIC COMPLEX WAS
  CONCEIVED       AS       A
  DEMONSTRATION           OF
  ECONOMICALLY
  RESPONSIBLE      BUILDING
  PRACTICES.
BAKER’S HOUSE “THE HAMLET”

•  BAKER’S OWN RESIDENCE IS
  CALLED ‘THE HAMLET’. IT
  HAS    BEEN     BUILT    IN
  THIRUVANANTHAPURAM,
  BUILT ON A STEEPLY SLOPING
  AND ROCKY HILLSIDE THAT
  HARDLY       HAD       ANY
  VEGETATION WHEN BAKER
  STARTED CONSTRUCTING.
• BAKER HAS TRULY ADOPTED
  HIS MOTTO TO “MAKE LOW-
  COSTERY A HABIT AND A
  WAY OF LIFE” BY REUSING
  EVERYTHING, FROM BRICK
  TO GLASS BOTTLES, AS
  BUILDING MATERIALS.
• KEY FEATURES OF HIS HOUSE
ARE:
ALL THE WALLS ARE MADE OF

MUD BRICKS.
TIMBER SALVAGED FROM AN OLD

BOAT JETTY.
• ONE    OF      THE    OTHER
  SIGNATURE ELEMENTS OF HIS
  DESIGN INCLUDES THE USE
  OF CIRCULAR WALLS, WHICH
  USE FAR LESS BRICK THAN
  RECTANGULAR WALLS.
• IN ADDITION, WHEN HE DOES
  USE CONCRETE FOR A ROOF,
  HE EMBEDS CHIPPED OR
  BROKEN      TERRA     COTTA
  ROOFING TILES INTO THE
  MIXTURE.
• THESE      TILES,     WHICH
  NORMALLY       WOULD     BE
  THROWN                AWAY,
  CONTRIBUTE        TO    THE
  STRENGTH OF THE ROOF,
  ALLOW     LESS     OF   THE
  EXPENSIVE CONCRETE TO BE
  USED, AND REDUCE THE
  STRUCTURAL LOAD OF THE
  BUILDING.
• HE USED BROKEN TILES FOR
  THE OUTER PAVED AREA OF
  HIS GARDEN.
• HE MADE AN EXTENSIVE USE
  OF TIMBER IN HIS HOUSE, LIKE
  IN THE LIVING ROOM OF
  HOUSE, THE DETAILING IN
  WOOD AND MUD BRICKS ARE
  WONDERFUL.
• THE LIVING ROOM, AN
  INTEGRATION      OF    NEW
  BUILDING AND SALVAGED
  TIMBER FROM TRADITIONAL
  BUILDINGS THAT WERE BEING
  DEMOLISHED.
• BAKER'S INNOVATIVE USE OF
  DISCARDED BOTTLES, INSET IN
  THE WALLS GIVING A VERY
  GOOD EFFECT OF LIGHT AND
  CREATING AN ILLUSION OF
  STAINED GLASS.

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low cost construction

  • 1. LOW COST CONSTRUCTION TECHNIQUES PROPOSED TECHNIQUES & LITERATURE STUDIES
  • 2. FUNICULAR ROOF FUNICULAR ROOFS-AN ALTERNATE TO RCC ROOFS THE FUNICULAR SHELL ROOF IS ONE SUCH COMPRESSION STRUCTURE, WHICH ENSURES CONSERVATION OF NATURAL RESOURCES BY UTILISING WASTE MATERIALS EFFECTIVELY AND OPTIMISING THE USE OF EXPENSIVE STEEL AND CEMENT. FURTHER, THE ARCH DISTRIBUTES THE POINT LOAD IN ALL DIRECTION EQUALLY THUS, IS ABLE TO WITHSTAND IMPACT LOADING AT ANY POINT. •DIAGONAL G RID OF FUNICULAR SHELL GIVES THE ILLUSION OF A LARGER SPACE. •ELIMINATE USE OF HIGH-ENERGY STEEL REINFORCEMENT USED IN THE CONVENTIONAL RCC ROOF. •ALLOWS EFFICIENT USE OF WASTE MATERIALS AND PROVIDES PERSONALITY, COLOUR AND TEXTURE. • MINIMISES REQUIREMENT OF INTERNAL PLASTERS. • PROVIDES ROOFING AT A LOWER COST.
  • 3. ! A DOUBLY CURVED STRUCTURE ON EDGE BEAM ENSURES OPTIMAL UTILISATION OF STEEL AND CEMENT. ! CAN BE DEMOULDED EVERY 48 HOURS. ! A SIMPLE YET SPLENDID ROOFING SYSTEM USING NATURAL MATERIALS AND TECHNOLOGY AS OPPOSED TO THE MONOTONOUS AND COMPLEX CONVENTIONAL SYSTEM. ! FUNICULAR SHELLS CAN TAKE ANY SHAPE- SQUARE, RECTANGLE, TRAPEZIUM, TRIANGULAR OR ANY OTHER SHAPE. THE KNACK LIES IN THE CASTING OF THE MOULD. ! THE UPPER HALF OF THE EDGE BEAM IS REQUIRED TO HOLD THE STIRRUPS. IT IS CAST ALONG WITH THE FUNICULAR SHELL; THEREFORE, IT CAN ALSO BE A TRIANGULAR SECTION. ! THE FUNICULAR SHELL CAN CARRY VARIOUS CONDUITS, TOILET PIPES IN THE AREA ABOVE THE BRICK -BAT LAYER. THESE CAN RUN ALONG THE PERIPHERY WHERE THE MAXIMUM DEPTH IS AVAILABLE. ! FUNICULAR SHELL ROOF FACILITATES THE INSTALLMENT OF FIXTURES LIKE- CEILING FANS, LIGHT FIXTURES ETC. A SKYLIGHT CAN BE INTRODUCED IN THE ROOF. THIS CAN BE ACHIEVED BY LEAVING A HOLLOW WHILE CASTING, USING THE INHERENT STRENGTH OF A RING IN COMPRESSION. ! THE FUNICULAR SHELL ALLOWS AMPLE FLEXIBILITY IN DESIGN
  • 4. GEODESIC DOMES •THE BASIC TRIANGLE OF AN ICOSAHEDRON IS SUBDIVIDED INTO SMALLER TRIANGLES AND EACH NODE LIFTED TO MEET THE SURFACE OF THE SPHERE. • THE MORE THE SUB-DIVISIONS, THE SMOOTHER THE DOME. EACH SIDE OF THE SUBDIVIDED TRIANGLE RESULTS IN A CHORD FACTOR, WHICH IS MULTIPLIED BY THE RADIUS TO GIVE THE STRAIGHT LENGTH OF EACH MEMBER. •EVEN THOUGH AN ICOSAHEDRON HAS BEEN TAKEN AS THE BASIC STARTING CONFIGURATION, ANY POLYHEDRA CAN BE USED BUT THE NUMBER OF VARIATIONS IN PLATE IS LIKELY TO INCREASE DEPENDING ON THE POLYHEDRA TAKEN FOR THE BASIC GEOMETRY. •THE NUMBER OF VARIATIONS IN THE JOINT PLATES IS EVIDENT.
  • 5. GEODESIC DOMES ! SIMPLE MILD STEEL PLATES ARE USED, WHICH ARE EASY TO FABRICATE CONSIDERING ONLY A HOLE AND A SLOT HAVE TO BE MADE IN IT. ! SINCE THE PLATES ARE DEPRESSING THE STRUCTURAL STEEL NO SUB-STRUCTURE IS REQUIRED TO ACCOMMODATE ROOFING MATERIAL ! THE TOP OF THE STRUCTURAL MEMBER SERVES FOR THE SEAT OF THE ROOFING MATERIAL. ! A SIMPLE HOLE AND SLOT IN THE PLATES PROVIDE FOR VARIATIONS IN ANGLES. THE HOLE FIXES THE DISTANCE AND THE SLOT PROVIDES ADJUSTMENT FOR THE ANGLES. ! BY CURVING THE INNER AND OUTER PLATES AND MOVING THE SLOT AND THE HOLE BY FEW MILLIMETRES CLOSER TO THE CENTRE, THE BOLTS ARE MADE TO CONVERGE TOWARDS THE CENTRE OF THE SPHERE. ! MEMBERS CAN BE DOUBLED IN DEPTH IF REQUIRED.
  • 6. A FRAMES •ARE WELDED FROM INCEPTION. THESE MEMBERS ARE MORE RESILIENT THAN REINFORCED CEMENT CONCRETE AND HAVE A LARGER STRENGTH EVEN WITHOUT THE CONCRETE COMPONENT. •THIS FORM OF REINFORCEMENT CONSUMES 30% LESS STEEL. •THEY PROVIDE FOR A SIMPLE ASSEMBLY OF BEAMS WITH CONTINUITY BARS AT JUNCTIONS IN VARIOUS DIRECTIONS AND REQUIRE MINIMUM FORMWORK FOR FILLING. •THEY ARE STABLE WITHOUT CONCRETE AS CONCRETE IS REDUCED TO A FILLER MATERIAL. •THE MEMBERS CAN BE FILLED WITH CONCRETE AT ANY POINT OF TIME SUBSEQUENTLY.
  • 7. SWARAN SINGH BLOCK •TAKE A SIMPLE, MANUALLY OPERATED BLOCK MAKING MACHINE AS AVAILABLE WITH MOST OF THE BUILDING CENTRES •TAKE A STIFF PVC SHEET OR RED MUD PLASTIC SHEET CUT TO THE SIZE OF THE BASE OF THE MOULD. • COAT IT WITH USED MOBIL OIL TO PREVENT ADHESION AND FACILITATE EASY DEMOULDING FROM THE SURFACE OF THE BLOCK. •STONE PIECES OF DIFFERENT COLORS AND ARRANGE THEM IN PATTERNS AS MAY BE DESIRED FOR THE PURPOSE OF ARTICULATION OF MATERIALS. •PREPARE A 1: 3 MIX OF CEMENT AND SAND MORTAR. POUR THE MORTAR EVENLY OVER THE STONE CHIPS •THE VIBRATION HELPS INTEGRATION OF THE STONE •PIECES WITH THE CEMENT MORTAR TO FORM AN IMPERMEABLE DIAPHRAGM.. •PREPARE ANOTHER MIX OF MUD WITH 2% CEMENT OR 5% LIME OR THE COMBINATION OF THE TWO. THIS MIX FORMS THE MAJOR PORTION OF THE BODY OF THE BLOCK. .
  • 8. •TAKE A JUTE PIECE LITTLE SMALLER THAN THE SIZE OF THE BASE AND DIP IT IN CEMENT SLURRY. PLACE THE JUTE PIECE IN THE MOULD AND FILL THE REST OF THE MOULD WITH THE SAME MIX TO ABOUT 2/3 RD OF THE MOULD AND ADD ANOTHER LAYER OF JUTE DIPPED IN CEMENT SLURRY. •NOW FILL THE MOULD TO THE TOP. LOCK THE LID AND USE THE COMPRESSOR TO COMPRESS THE BLOCK •SURFACE OF THE WALL AND WILL REQUIRE A FLASH COAT LATER IF AT ALL, ONLY TO EVEN OUT THE SURFACE.
  • 9. INTERLOCKING HOLLOW CONCRETE BLOCKS
  • 10.
  • 11.
  • 12. VENE BLOCKS •THE VENE BLOCK IS ESSENTIALLY AN ADOBE BLOCK MAKING MECHANISM THAT IS SIMPLE AND EFFICIENT. •IT COMPRISES OF A MOULD MADE OF TIMBER. THE MOULD IS USED TO MAKE THE ADOBE BLOCKS RIGHT WHERE THE WALL IS TO BE ERECTED, AND RELIES ON A SIMPLE NON-MECHANISED PROCEDURE. •THE MOULD IS PLACED WHERE REQUIRED AND THEN EARTH MIXTURE IS POURED IN AND COMPACTED WITHIN THE MOULD. ONCE THE MOULD IS FILLED AND ALL THE EARTH WITHIN COMPACTED, THE MOULD IS LIFTED OUT AND MOVED AHEAD TO MAKE THE NEXT BLOCK. •THE SAME PROCESS IS REPEATED. THE MOULD ENSURES THAT THE BLOCKS ARE LAID PRECISELY AND GIVES IT A CLEANER FINISH THAN THE ROUGH, HAND COMPACTED ADOBE WALLS.
  • 13. •BY INTEGRATING THE RAM LOCHAN TILE INTO THE VENE BLOCK MAKING PROCESS, PLACING THE TILE INTO THE MOULD BEFORE WE START COMPACTING THE EARTH, WE PROTECT THE ADOBE WALL FROM EROSION. •THE RAM LOCHAN TILE IS A FABRICATED ON SITE A SIMPLE MOULD. TO ACCOMMODATE THIS 10 MM TILE TILE, THE SIZE OF THE VENE BLOCK MOULD IS INCREASED SLIGHTLY. • BOTH THE REGULAR AND THE CORNER MOULDS ARE MODIFIED IN THIS MANNER. THE RAM LOCHAN TILE IS ALSO MODIFIED TO ALLOW FOR TWO DOVETAIL LOCKS. •FOR THE CORNERS ONE OF THE DOVETAILS IS MADE SHORTER TO ALLOW FOR A CLEAN JOINT.THE LOWER DOVETAIL OF THE TILE ALLOWS FOR A PRECISE OVERLAPPING OF THE TILES. •THE RAM LOCHAN TILE IS INSERTED INTO THE VENE BLOCK MOULD DURING CONSTRUCTION AND IS MADE TO OVERLAP THE LOWER COURSE BY HALF AN INCH ,
  • 15. COST REDUCTION TECHNIQUES 1 FOUNDATION • NORMALLY THE FOUNDATION COST COMES TO ABOUT 10 TO 15% OF THE TOTAL BUILDING AND USUALLY FOUNDATION DEPTH OF 3 TO 4 FT. IS ADOPTED FOR SINGLE OR DOUBLE STOREY BUILDING AND ALSO THE CONCRETE BED OF 6″(15 CMS.) IS USED FOR THE FOUNDATION WHICH COULD BE AVOIDED. • IT IS RECOMMENDED TO ADOPT A FOUNDATION DEPTH OF 2 FT.(0.6M) FOR NORMAL SOIL LIKE GRAVELY SOIL, RED SOILS ETC., • USE THE UNCOURSED RUBBLE MASONRY WITH THE BOND STONES AND GOOD PACKING. • SIMILARLY THE FOUNDATION WIDTH IS RATIONALIZED TO 2 FT. (0.6M). • TO AVOID CRACKS FORMATION IN FOUNDATION THE MASONRY SHALL BE THOROUGHLY PACKED WITH CEMENT MORTAR OF 1:8 BOULDERS AND BOND STONES AT REGULAR INTERVALS. • IT IS FURTHER SUGGESTED TO ADOPT ARCH FOUNDATION IN ORDINARY SOIL FOR EFFECTING REDUCTION IN CONSTRUCTION COST UP TO 40%. • THIS KIND OF FOUNDATION WILL HELP IN BRIDGING THE LOOSE POCKETS OF SOIL WHICH OCCURS ALONG THE FOUNDATION. • IN THE CASE OF BLACK COTTON AND OTHER SOFT SOILS IT IS RECOMMEND TO USE UNDER REAM PILE FOUNDATION WHICH SAVES ABOUT 20 TO 25% IN COST OVER THE CONVENTIONAL METHOD OF CONSTRUCTION.
  • 18. 2 WALLING •WALL THICKNESS OF 6 TO 9″ IS RECOMMENDED FOR ADOPTION IN THE CONSTRUCTION OF WALLS ALL-ROUND THE BUILDING AND 41/2 ” FOR INSIDE WALLS. • IT IS SUGGESTED TO USE BURNT BRICKS WHICH ARE IMMERSED IN WATER FOR 24 HOURS AND THEN SHALL BE USED FOR THE WALLS 3 RAT – TRAP BOND WALL •IT IS A CAVITY WALL CONSTRUCTION WITH ADDED ADVANTAGE OF THERMAL COMFORT AND REDUCTION IN THE QUANTITY OF BRICKS REQUIRED FOR MASONRY WORK. •BY ADOPTING THIS METHOD OF BONDING OF BRICK MASONRY COMPARED TO TRADITIONAL ENGLISH OR FLEMISH BOND MASONRY, IT IS POSSIBLE TO REDUCE IN THE MATERIAL COST OF BRICKS BY 25% AND ABOUT 10TO 15% IN THE MASONRY COST. •BY ADOPTING RAT-TRAP BOND METHOD ONE CAN CREATE AESTHETICALLY PLEASING WALL SURFACE AND PLASTERING CAN BE AVOIDED.
  • 20. • 4 CONCRETE BLOCK WALLING • IN VIEW OF HIGH ENERGY CONSUMPTION BY BURNT BRICK IT IS SUGGESTED TO USE CONCRETE BLOCK (BLOCK HOLLOW AND SOLID) WHICH CONSUMES ABOUT ONLY 1/3 OF THE ENERGY OF THE BURNT BRICKS IN ITS PRODUCTION. • BY USING CONCRETE BLOCK MASONRY THE WALL THICKNESS CAN BE REDUCED FROM 20 CMS TO 15 CMS. • CONCRETE BLOCK MASONRY SAVES MORTAR CONSUMPTION, SPEEDY CONSTRUCTION OF WALL RESULTING IN HIGHER OUTPUT OF LABOUR, PLASTERING CAN BE AVOIDED THEREBY AN OVERALL SAVING OF 10 TO 25% CAN BE ACHIEVED.
  • 21. 5 SOIL CEMENT BLOCK TECHNOLOGY •IT IS AN ENERGY EFFICIENT METHOD OF CONSTRUCTION WHERE SOIL MIXED WITH 5% AND ABOVE CEMENT AND PRESSED IN HAND OPERATED MACHINE AND CURED WELL AND THEN USED IN THE MASONRY. •THIS MASONRY DOESN’T REQUIRE PLASTERING ON BOTH SIDES OF THE WALL. •THE OVERALL ECONOMY THAT COULD BE ACHIEVED WITH THE SOIL CEMENT TECHNOLOGY IS ABOUT 15 TO 20%
  • 22. •6 DOORS AND WINDOWS •IT IS SUGGESTED NOT TO USE WOOD FOR DOORS AND WINDOWS AND IN ITS PLACE CONCRETE OR STEEL SECTION FRAMES SHALL BE USED FOR ACHIEVING SAVING IN COST UP TO 30 TO 40%. •SIMILIARLY FOR SHUTTERS COMMERCIALLY AVAILABLE BLOCK BOARDS, FIBRE OR WOODEN PRACTICAL BOARDS ETC., SHALL BE USED FOR REDUCING THE COST BY ABOUT 25%. •BY ADOPTING BRICK JELLY WORK AND PRECAST COMPONENTS EFFECTIVE VENTILATION COULD BE PROVIDED TO THE BUILDING AND ALSO THE CONSTRUCTION COST COULD BE SAVED UP TO 50% OVER THE WINDOW COMPONENTS. •ALUMINIUM, IRON, CONCRETE FRAMES CAN BE USED •7 LINTELS AND CHAJJAS •THE TRADITIONAL R.C.C. LINTELS WHICH ARE COSTLY CAN BE REPLACED BY BRICK ARCHES FOR SMALL SPANS AND SAVE CONSTRUCTION COST UP TO 30 TO 40% OVER THE TRADITIONAL METHOD OF CONSTRUCTION. • BY ADOPTING ARCHES OF DIFFERENT SHAPES A GOOD ARCHITECTURAL PLEASING APPEARANCE CAN BE GIVEN TO THE EXTERNAL WALL SURFACES OF THE BRICK MASONRY.
  • 23. LAURIE BAKER LAURIE BAKER, AN ARCHITECT FROM BIRMINGHAM, NOW SETTLED IN THIRUVANANTHAPURAM, HAS EFFECTIVELY COMBINED TRADITIONAL TECHNIQUES WITH INDIGENOUS INNOVATIONS AND HAS MANAGED TO BRING DOWN THE COST OF CONSTRUCTION BY HALF. HIS TECHNIQUES NOT ONLY USE CHEAPER MATERIALS BUT ALSO ELIMINATE REDUNDANT DETAILS FROM THE DESIGN. CONCRETE IS RARELY USED. MANGALORE TILES ARE USED FOR THE ROOF WHICH MAKES IT LIGHT AND INEXPENSIVE.
  • 24. • HIS APPROACH AND SIMPLE PRINCIPLES TO LOW COST HOUSING ARE GANDHIAN, WHICH CAN BE ADOPTED BY EVERY BUILDER. THE FOLLOWING ARE THE MAINSTAY OF DESIGN AND CONSTRUCTION OF HIS HOUSES. • PLANNING OF SPACE– LESSER WALLS, MULTIPLE USES OF SPACE, SHORT SPANS OF ROOF, AGGLOMERATION OF BUILDING SERVICES, FLEXIBILITY IN GROWTH. • LOCAL BUILDING MATERIAL– BRICKS, TILES, LIME, SURKHI, TIMBER, THATCH, STONE, PALM, MUD. • BRICKS AND JALIS – PLAY OF LIGHT AND SHADE, UNIDIRECTIONAL VISION. • UNPLASTERED WALLS. • LINTELS AND ARCHES. • ATTENTION TO DETAILS.
  • 25. BAKER’S WORKS INCLUDE, PRIVATE RESIDENCES, SOME INSTITUTIONAL BUILDINGS, LIKE ‘CENTER FOR DEVELOPMENT STUDIES’, KERALA. HE IS VERY ACTIVE IN THE WORKS OF ALL THE BUILDING CENTERS WORKING IN KERALA AS WELL AS IN THE OTHER PARTS OF COUNTRY. RATHER IT WAS HIS INITIAL EFFORT TO PROMOTE THE LOW COST HOUSING IN INDIA, WHERE HOUSING IS A BIG PROBLEM. • HIS TECHNIQUES NOT ONLY USE CHEAPER MATERIALS BUT ALSO ELIMINATE UNNECESSARY DETAILS FROM THE DESIGN. CONCRETE IS SPARINGLY USED. MANGALORE TILES ARE USED FOR THE ROOF WHICH MAKES IT LIGHT AND INEXPENSIVE. • HIS PROJECTS FOR LOW COST BUILDINGS INCLUDE 1. CENTER FOR DEVELOPMENT STUDIES – TRIVANDRUM 2. 'THE HAMLET', LAURIE BAKER'S HOME THIRUVANANTHAPURAM,
  • 26. CENTER FOR DEVELOPMENT STUDIES - TRIVANDRUM -1975 • LESLIE BAKER’S ‘MASTERPIECE,’ THE CENTRE FOR DEVELOPMENT STUDIES IN KERALA, IS A 10 ACRE CAMPUS AT A COST OF RS15 LAKHS, DEMONSTRATED THE EFFECTIVENESS OF HIS PLAN. • THE INSTITUTE INCLUDES  A RESEARCH INSTITUTE.  A GRADUATE SCHOOL DEDICATED TO UTILIZING THE STUDY OF ECONOMICS TO HELP THE POOR.
  • 27. MAIN FEATURES OF THIS BUILDING: • HE DESIGNED THE BUILDINGS AT THE CENTRE TO PRACTICALLY COOL THEM. • HE RENDERS JALIS, A PERFORATED WOODEN SCREEN FOUND IN TRADITIONAL INDIAN ARCHITECTURE, IN BRICK; • THE OPEN GRILLWORK ALLOWS COOL BREEZES TO WAFT INTO THE INTERIOR WHILE FILTERING HARSH, DIRECT SUNLIGHT. • SOME BUILDINGS INCLUDE A SERIES OF SMALL COURTYARDS CONTAINING SHALLOW POOLS IN THE CENTER, WHOSE EVAPORATION HELPS COOL THE AIR. • PAYING CLOSE ATTENTION TO THE EXISTING SITE AS HE BEGAN TO DESIGN THE PROJECT, BAKER LEFT AS MANY COCONUT PALM TREES IN PLACE AS POSSIBLE TO CAST COOLING SHADE ONTO THE CAMPUS.
  • 28. • THE COMPUTER CENTRE AT THE CENTRE FOR DEVELOPMENT STUDIES, THIRUVANANTHAPURAM. HERE BAKER EVOLVED AN INNOVATIVE SYSTEM OF CURVED DOUBLE WALLS TO SAVE ON COST AND TO CONSERVE THE ENERGY . • IN EVALUATING THE CAMPUS FOR THE CENTRE, BAKER PLANNED ROADS ALONG THE LOWER, WHILE FOOTPATHS WERE ROUTED ALONG NATURALLY OCCURRING ELEVATED AREAS; FOLLOWING THE NATURAL TOPOGRAPHY HELPS TO LIMIT EROSION AND DESPOILMENT OF THE ENVIRONMENT.
  • 29. • BRICKWALLS WERE LEFT UNPLASTERED AND BRICK CORBELLING WAS USED RATHER THAN MORE EXPENSIVE CONCRETE LINTELS. • WITH HIS MASTERY OVER HIS MEDIUM, BAKER CREATES A VARIETY OF TEXTURES AND PATTERNS BY SIMPLE MANIPULATION OF THE WAY IN WHICH BRICKS ARE PLACED IN THE WALL. • THE ARCHITECTURE OF THIS ACADEMIC COMPLEX WAS CONCEIVED AS A DEMONSTRATION OF ECONOMICALLY RESPONSIBLE BUILDING PRACTICES.
  • 30. BAKER’S HOUSE “THE HAMLET” • BAKER’S OWN RESIDENCE IS CALLED ‘THE HAMLET’. IT HAS BEEN BUILT IN THIRUVANANTHAPURAM, BUILT ON A STEEPLY SLOPING AND ROCKY HILLSIDE THAT HARDLY HAD ANY VEGETATION WHEN BAKER STARTED CONSTRUCTING. • BAKER HAS TRULY ADOPTED HIS MOTTO TO “MAKE LOW- COSTERY A HABIT AND A WAY OF LIFE” BY REUSING EVERYTHING, FROM BRICK TO GLASS BOTTLES, AS BUILDING MATERIALS. • KEY FEATURES OF HIS HOUSE ARE: ALL THE WALLS ARE MADE OF MUD BRICKS. TIMBER SALVAGED FROM AN OLD BOAT JETTY.
  • 31. • ONE OF THE OTHER SIGNATURE ELEMENTS OF HIS DESIGN INCLUDES THE USE OF CIRCULAR WALLS, WHICH USE FAR LESS BRICK THAN RECTANGULAR WALLS. • IN ADDITION, WHEN HE DOES USE CONCRETE FOR A ROOF, HE EMBEDS CHIPPED OR BROKEN TERRA COTTA ROOFING TILES INTO THE MIXTURE. • THESE TILES, WHICH NORMALLY WOULD BE THROWN AWAY, CONTRIBUTE TO THE STRENGTH OF THE ROOF, ALLOW LESS OF THE EXPENSIVE CONCRETE TO BE USED, AND REDUCE THE STRUCTURAL LOAD OF THE BUILDING. • HE USED BROKEN TILES FOR THE OUTER PAVED AREA OF HIS GARDEN.
  • 32. • HE MADE AN EXTENSIVE USE OF TIMBER IN HIS HOUSE, LIKE IN THE LIVING ROOM OF HOUSE, THE DETAILING IN WOOD AND MUD BRICKS ARE WONDERFUL. • THE LIVING ROOM, AN INTEGRATION OF NEW BUILDING AND SALVAGED TIMBER FROM TRADITIONAL BUILDINGS THAT WERE BEING DEMOLISHED. • BAKER'S INNOVATIVE USE OF DISCARDED BOTTLES, INSET IN THE WALLS GIVING A VERY GOOD EFFECT OF LIGHT AND CREATING AN ILLUSION OF STAINED GLASS.