2. BRICK IS AN BUILDING MATERIAL
THIS MATERIAL IS USED FOR CONSTRUCTION
BECAUSE OF BEING CHEAP,DURABLE,AND
EASY TO HANDLE AND WORK WITH.CLAY BRICKS ARE
USED FOR BUILDING- UP EXTERIOR AND INTERIOR
WALLS,PARTITIONS,FOOTINGS AND OTHER LOAD
BEARING STRUCTURES.
3. A BRICK IS RECTANGULAR IN SHAPE AND SIZE THAT
CAN BE CONVINIENTLY HANDLED WITH ONE HAND
LENTH OF BRICK =2 X WIDTH OF BRICK+TCKNESS OF
MORTOR
HEIGHT OF BRICK=WIDTH OF BRICK
STANDARD SIZE OF A BRICK
19 X 9 X 9 CM
4.
5. THE SURFACES OF A BRICK HAVE NAMES:
TOP AND BOTTOM SURFACES ARE BEDS.
ENDS ARE HEADERS AND HEADER FACES.
SIDES ARE STRETCHERS OR STRETCHER FACES.
6. A STANDARD METRIC BRICK HAS COORDINATING
DIMENSIONS OF 225 X 112.5 X 75 MM (9''×4½" ×3“)
CALLED NOMINAL SIZE AND
WORKING DIMENSIONS (ACTUAL DIMENSIONS) OF 215 X
102.5 X 65 MM (8.5“ * 4 *2.5) CALLED ARCHITECTURAL
SIZE
11. PERFORATED BRICK SHALL HAVE HOLES NOT
EXCEEDING THE 25% OF THE GROSS VOLUME OF THE
BRICK; MINIMUM 30% SOLID ACROSS THE WIDTH OF
BRICK.
12. FROGGED BRICKS
FROGGED BRICKS SHALL HAVE DEPRESSIONS IN
ONE OR MORE BED FACES BUT THEIR TOTAL VOLUME
SHALL NOT EXCEED 20% OF GROSS VOLUME OF A
BRICK.
14. FIRST CLASS BRICKS
THESE ARE THOROUGHLY BURNT AND OR OF DEEP RED
,CHERRY COLOUR.
THESE SHOULD BE FREE FROM FLAWS ,CRACKS AND
STONES.
THE SURFACE SHOULD BE SMOOTH AND RECTANGULAR
,WITH PARALLEL ,SHARP AND STRAIGHT EDGES AND
SQUARE CORNERS
THESE SHOULD HAVE UNIFORM TEXTURE
WATER ABSORPTION SHOULD BE
12-15% OF ITS DRY WEIGHT WHEN
IMMERSED IN COLD WATER
FOR 24 HOURS.
USES:
THESE BRICKS ARE RECOMMENDED
FOR POINTING,EXPOSED FACEWORK IN
MASONRY STRUCTURES.
15. SECOND CLASS BRICKS
THESE ARE SUPPOSED TO HAVE THE SAME
REQIREMENTS AS THE FIRST CLASS BRICKS
1. SMALL CRACKS AND DISTORTIONS ARE PERMITTED.
2. A LITTLE HIGHER WATER ABSORPTION OF ABOUT 16-
20% OF ITS DRY WEIGHT IS ALLOWED
3. THE CRUSHING STRENGTH SHOULD NOT BE
LESSTHAN
7.0 N/mm^2.
USES:
THESE ARE RECOMMENDED FOR
ALL MASONRY WORKS
16. THIRD CLASS BRICKS
THESE ARE UNDERBURNT.
THEY ARE SOFT AND LIGHT COLOURED PRRODUCING
A DULL SOUND
WATER ABSORPTION IS ABOUT 25% OF DRY WEIGHT
USES:
IT IS USED FOR BUILDING TEMPORARY
STRUCTURES
17. FOURTH CLASS BRICKS
THESE ARE OVERBURNT AND BADLY DISTORTED
IN SHAPE AND SIZE AND BRITTLE IN NATURE.
USES:
THE BALLAST OF SUCH BRICKS IS USED
FOR FOUNDATION AND ROAD METAL.
18. USES:
COMMON BRICK: IT IS A GENERAL MULTIPURPOSE
UNIT MANUFACTURED ECONOMICALLY WITHOUT
SPECIAL REFERRENCE TO APPEARANCE
FACING BRICK:THESE ARE MADE PRIMARLY WITH A
VIEW TO HAVE GOOD APPEARANCE AND TEXTURE
ENGINEERING BRICKS:THESE ARE STRONG
IMPERMIABLE SMOOTH TABLEMOULED.
19. ENGLISH BOND
THE FACING BRICKS ARE LAID IN ALTERNATE
COURSES OF HEADERS AND STRETCHERS.
QUEEN-CLOSER INSERTED NEXT TO QUOIN-HEADERS
TO PRODUCE OVERLAP.
ENGLISH BOND IS THE STRONGEST.
a. AVOIDS CONTINUOUS VERTICAL JOINTS.
DISADVANTAGE:
PENETRATION OF DAMP THROUGH TRANSVERSE
JOINTS.
APPEARANCE NOT AS GOOD AS FLEMISH BOND.
20.
21. FLEMISH BOND
IN THIS BOND A QUEEN CLOSER IS PROVIDED AFTER EVERY
QUEEN HEADER IN THE ALTERNATE COURSES TO BREAK
THE CONTINUITY OF VERTICAL JOINTS.
BRICK BATS ARE TO BE USED FOR FORMING THIS BOND
WHEN THICKNESS OF WALL IS MULTIPLE OF HALF BRICK.
22. HEADING OR HEADER BOND
HEADING OR HEADER BOND IS LAID ON HEADERS.
USED FOR ROUND QUICK SWEEPS, AS IN FIG. 4.
SHOULD NEVER BE USED IN STRAIGHT WORK, AS IT IS VERY
WEAK
23. STRETCHING OR STRETCHER BOND
BRICKS ARE LAID IN STRETCHERS, AS IN THE FIGURE
BELOW.
USED IN WALLS OF HALF-BRICK IN THICKNESS.
DUE TO ITS CONSTANT OCCURRENCE IN THE LAST
POSITION IT IS ALSO CALLED CHIMNEY BOND.
24. GARDEN-WALL BOND
USED FOR 9 INCH WALLS.
USED WHEN A FAIR FACE IS REQUIRED ON BOTH SIDES.
WALL IS COMPOSED OF THREE OR FOUR COURSES OF
STRETCHERS ALTERNATING WITH ONE OF HEADERS, AS
IN THE FIGURE BELOW.
25. RAT TRAP BOND
IT IS MADE BY PLACING THE BRICKS ON THEIR SIDES
HAVING A CAVITY OF 4″ (100 MM)
ALTERNATE COURSE OF STRETCHERS AND HEADERS.
IT IS STILL USED IN INDIA AS AN ECONOMICAL BOND.
26. DONOT BURN, BUCKLE OR MELT.
DONOT ROT AND ALLOW TERMITES TO INVADE.
DONOT RUST AND CORRODE.
DONOT DENT.
DONOT FADE FROM THE SUN'S UV RAYS.
WILL NOT BE DAMAGED BY HIGH WINDS, RAIN OR
HAIL.
DONOT REQUIRE CONSTANT MAINTENANCE.
DNOT DEVALUE.
DONOT LIMIT YOUR PERSONAL EXPRESSION.
DONOT LIMIT YOUR DESIGN OPTIONS.
27. LOAD BEARING MASONRY HAS A HIGH SELF-WEIGHT OR
LOW STRENGTH-TO-WEIGHT RATIO.
LABOUR INTENSIVE CONSTRUCTION
MOISTURE PENETRATION.
THERMAL EXPANSION
A SLOW AND TEDIOUS PROCESS.
REQUIRES SKILLED MASONS.
LOW TENSILE STRENGTH, CAN FAIL DURING
EARTHQUAKES.
STRUCTURAL LIMITATIONS :
MASONRY HAS HIGH COMPRESSIVE STRENGTH UNDER
VERTICAL LOADS BUT HAS LOW TENSILE STRENGTH
(AGAINST TWISTING OR STRETCHING) UNLESS
REINFORCED.
THE TENSILE STRENGTH OF MASONRY WALLS CAN BE
INCREASED BY THICKENING THE WALL, OR BY BUILDING
MASONRY PIERS (VERTICAL COLUMNS OR RIBS) AT
INTERVALS.
28. SIZE AND SHAPE
THE BRICKS SHOULD HAVE UNIFORM SIZE AND PLANE
,RECTANGULAR SURFACES WITH PARALLEL SIDES AND
SHARP STRAIGHT EDGES
COLOUR
THE BRICK SHOULD HAVE A UNIFORM DEEP RED OR
CHERRY COLOUR AS INDICATIVE OF UNIFORMLY IN
CHEMICAL COMPOSITION
TEXTURE AND COMPACTNESS
THE SURFACES SOULD NOT BE TOO
SMOOTH TO CAUSE SLIPPING OF MOTOR
THE BRICK SHOULD HAVE PRECOMPACT
AND UNIFORM TEXTURE
29. HARDNESS AND SOUNDNESS
THE BRICK SHOULD BE SO HARD THAT
WHEN SCRATCHED BY A FINGERNAIL
NO IMPRESSION IS MADE
WATER ABSORPTION
IT SHOULD NOT EXCEED 20% OF ITS
DRYWEIGHT WHEN KEPT IMMERSED IN
WATER FOR 24 HOURS
CRUSHING STRENGTH
IT SHOULD NOT BE LESS THAN
10N/MM^2
BRICKEARTH
IT SHOULD BE FREE FROM STONES ,
KANKARS,ORGANICMATTER
,SALTPETRE ETC
30. PVC IS REPLACING TRADITIONAL BUILDING
MATERIALS SUCH AS WOOD, METAL, CONCRETE
AND CLAY IN MANY APPLICATIONS.
POLYVINYL CHLORIDE, PVC, IS ONE OF THE MOST
POPULAR PLASTICS USED IN BUILDING AND
CONSTRUCTION. IT IS USED IN WINDOW FRAMES,
FLOORING AND ROOFING FOILS, WALL COVERINGS,
CABLES AND MANY OTHER APPLICATIONS
AS IT PROVIDES A MODERN ALTERNATIVE TO
TRADITIONAL MATERIALS SUCH AS WOOD, METAL,
RUBBER AND GLASS
31. MADE FROM SALT (57 PER CENT) AND OIL/GAS (43
PER CENT).
WAS FIRST PRODUCED COMMERCIALLY IN THE LATE
1920S.
32. PVC IN MEDICAL APPLICATIONS
PVC IN TRANSPORT
PVC IN BUILDING AND CONSTRUCTION
PVC IN TOYS
PVC IN CONSUMER GOODS AND EVERYDAY LIFE
PVC IN PACKAGING
PVC IN ART AND DESIGN
33. DURABLE, STRONG, LIGHTWEIGHT
LOW MAINTANENCE REQUIRED
ONE OF THE MOST WIDELY RECYCLED PLASTICS
HIGH PERFORMANCE AT LOW COST
HELPS CONSERVE ENERGY AND NATURAL
RESOURCES
SAFE AND INERT TO USE (PLAYS A MAJOR ROLE
IN SAVING PEOPLE’S LIVES)
DOESN’T SUPPORT COMBUSTION (INHERENTLY
FIRE RESISTANT)
34. MAJOR APPLICATIONS IN THE BUILT
ENVIRONMENT INCLUDE:
WINDOW FRAMES
DRAINAGE PIPES
WATER SERVICE PIPES
RESILIENT FLOORINGS
ROOFING MEMBRANES
35. WINDOW PROFILES
PVC REPRESENTS A GOOD ECONOMIC AND
ECOLOGICAL BALANCE COMPARED TO ALTERNATIVES
AND, BECAUSE LITTLE MAINTENANCE IS REQUIRED,
PVC AVOIDS THE NEED FOR CLEANING
CHEMICALS, SOLVENTS AND PAINT.
CLADDING
PVC CLADDING IS AN ATTRACTIVE WAY OF ADDING
VALUE TO A PROPERTY. IT OFFERS HIGH RESISTANCE TO
THE ELEMENTS AND REQUIRES LITTLE MAINTENANCE.
ROOFLINE DRAINAGE, DRAINPIPES,
SOFFITS, BARGEBOARDS
36. CONSERVATORIES AND ATRIA
PVC IS A STRONG AND DURABLE CONSTRUCTION
MATERIAL ALLOWING MASS-PRODUCED OR
ONE-OFF DESIGNS FOR APPLICATIONS SUCH AS
CONSERVATORIES, SWIMMING POOL ROOMS
AND ATRIA.
WALLCOVERINGS
PVC WALLCOVERINGS OFFER THE WIDEST VARIETY OF
FINISHES IN DOMESTIC OR COMMERCIAL
BUILDINGS. FROM FASHIONABLE PRINTED VINYL
WALLPAPER TO HIGH-TECH SPECIALIST
COVERINGS IN AREAS SUCH AS OPERATING THEATRES.
37. DAMP-PROOF COURSE
PVC IS IMPERVIOUS SO AN IDEAL MATERIAL FOR
DAMP-PROOFING WALLS
CABLING
DUCTING FOR CABLES
LIGHTWEIGHT, MODULAR DUCTING ALLOWS EASY
ACCESS TO BUILDING SERVICES INCLUDING
WATER, POWER AND TELECOMS.
PIPES AND FITTINGS
ECONOMY, EASY INSTALLATION, CHEMICAL
RESISTANCE, GOOD FLOW PROPERTIES, AND
MINIMAL MAINTENANCE ALL MEAN SIGNIFICANT
ADVANTAGES FOR PVC PIPES AND FITTINGS
IN CONSTRUCTION PRODUCTS.
38. CABLING FOR TV
DOORS
BETTER SOUND AND HEAT INSULATION TOGETHER
WITH IMPROVED SECURITY ARE JUST SOME OF
THE BENEFITS OF A WELCOMING PVC DOOR.
FLOORING
39. THIS RANGE IS USED IN DECORATING HOMES, WALL
CLADDING AND POSSESS PIVOTAL FEATURES THAT
ENHANCE THE APPEAL OF A ROOM.
THESE WALL PANELS ARE HIGHLY DEMANDED BY
CUSTOMERS FOR GIVING THEIR INTERIOR A
ELEGANT AND STYLISH LOOK.
40. STRONG AND LIGHTWEIGHT
EASY TO INSTALL
DURABLE
COST-EFFECTIVE
SAFE MATERIAL
FIRE RESISTANT
GOOD INSULATOR
VERSATILE
41. ALL PVC WALL CLADDING PRODUCTS HAVE SILVER
IONS EMBEDDED AT THE TIME OF MANUFACTURE
MEANING THAT IT HAS ANTIMICROBIAL
PROTECTION THROUGHOUT THE SHEET
THIS MEANS THE BIOCLAD PVC CLADDING SYSTEM
WILL REMAIN EFFECTIVE EVEN WHEN SCRATCHED
AS THE ANTIMICROBIAL PROTECTION CANNOT BE
WASHED AWAY LIKE OTHER SYSTEMS.
THE BIOCLAD PVC CLADDING SYSTEMS HAS BEEN
PROVEN TO BE EFFECTIVE IN REDUCING BACTERIA,
MICROBES, PROTOZOAN AND FUNGI.
Editor's Notes
History of Bricks:
Bricks are one of the oldest types of building blocks.
They are an ideal building material because they are relatively cheap to make, very durable, and require little maintenance.
A brick is a block of ceramic material used in masonry construction, usually laid using various kinds of mortar.
Bricks dated 10,000 years old were found in the Middle East.
Examples of the civilizations who used mud brick are the ancient Egyptians and the Indus Valley Civilization, where it was used exclusively. In particular, it is evident from the ruins of Buhen, Mohenjo-Daro and Harappa.
The first sun-dried bricks were made in Mesopotamia (what is now Iraq), in the ancient city of Ur in about 4000 BC
The coordinating dimensions are a measure of the physical space taken up by a brick together with the mortar required on one bed , one header face and one stretcher face.
The working dimensions are the sizes to which manufacturers will try to make the bricks.
Methods of manufacture for many units and components are such that the final piece is not quite the size expected but it can fall within the defined limits.
This can be due to the things like shrinkage, distortion when drying out, firing etc.
The difference between the working and coordinating dimensions of a brick is 10mm (0.5“)and this difference is taken up with the layer of mortar into which the bricks are pressed when laying.
The working dimensions are also known as the nominal size of a brick.
ADVANTAGES OF FLEMISH BOND:
It is highly economical.
Walls one brick in thickness are easier to produce a fair face on both sides in Flemish than in English bond.
The appearance of Flemish bond is more appealing to eye than that of English bond.
THE ADVANTAGES OF RAT TRAP BOND:
It is highly economical because:
Can make a wall of one brick thickness with fewer bricks than a solid bond.
Strength is equal to the standard 10″ (250 mm) brick wall, but consumes 20% less bricks.
Cost saving on material is 26% as compared to the traditional 10″ brick wall.
Maintains thermal comfort inside the building due to air medium.
Bricks aligned on both sides, plastering not required.
It is quite strong as building constructed about 40 years ago still does not show any signs of distress.
THE ADVANTAGES OF RAT TRAP BOND:
It is highly economical because:
Can make a wall of one brick thickness with fewer bricks than a solid bond.
Strength is equal to the standard 10″ (250 mm) brick wall, but consumes 20% less bricks.
Cost saving on material is 26% as compared to the traditional 10″ brick wall.
Maintains thermal comfort inside the building due to air medium.
Bricks aligned on both sides, plastering not required.
It is quite strong as building constructed about 40 years ago still does not show any signs of distress.