➢FinishingoftheSurface:
Thisisanoptionalstep.Sometimes,afinishinglayercalledcowdungwashisalso
appliedtothetopofthelaidfloor.
Forthis,cowdungandclayaremixedintoathinpasteandappliedtothecompacted
floorinathinlayer.
Someparticulartypeofpatternsortexturescanalsobeformedonthesurfacewhile
finishing.
➢CuringoftheSurface:
Thefloorshouldnotbeallowedtodryrapidly.Hence,waterissprinkledatregularand
frequentintervalstokeepthemoistureuniformlydistributedoverthethicknessofthe
layer.
Ifthecuringstepismissedout,thenthefloortendstodevelopcracks.
Cracks in Mud Flooring Upon Drying if NOT Properly Cured Finishing of Mud Flooring
MUD FLOORINGLaying Process
The merits and demerits of mud or muramflooring may be summarized below :
i.Merits:
i.It is cheap.
ii.It has smooth, hard and fairly impervious surface.
iii.It is easy in construction.
iv.It has sufficiently long life if properly maintained.
v.It maintains comfortable temperature in all seasons.
Demerits:
For perfect maintenance of the surface it has to be given cement cow-dung wash
once or twice a week. This may be objectionable from sanitary consideration.
Merits & Demerits MURAM FLOORING
Merits:
i.It is durable and sufficiently hard.
ii.It is cheaper than cement concrete, wooden or mosaic flooring.
iii.It is non-slippery.
iv.It is easily repairable.
Demerits:
i.It is absorbent.
Merits & Demerits BRICK FLOORING
Any lamIniscatedsandstone available in uniform thickness is called flag stone..
Introduction FLAGSTONE FLOORING
➢The stone slab for flooring may be square or rectangular with width not less than 38
cm. and thickness varying from 20 to 40 mm.
➢The sub-grade is prepared by laying a 10 to 15 cm. thick layer of lime concrete over
a bed of well consolidated earth.
➢On this sub-grade well wetted flag stones are laid on 20 to 25 mm. thick layer of bed
mortar.
➢When the stone slabs are properly set, mortar in the joints is raked out to a depth of
about 20 mm. and flush pointed
with cement mortar (1:3).
➢A slope of 1 to 40 is necessary to be
given in flag stone flooring for
proper drainage
Laying Process FLAGSTONE FLOORING
Depending upon the type of material used tiled flooring can be broadly divided into
the following categories.
(1)Terrazzo flooring
(2)Chequeredtile flooring
(3)Glazed tile flooring
(4)PVC tile flooring
TILED FLOORINGIntroduction
(i) TERRAZZO FLOORINGIntroduction
Terrazotiles manufactured under hydraulic pressure are available in following three
standard sizes.
200 x 200 x 20 mm. 250 x 250 x 22 mm. 300 x 300 x 25 mm.
Thetotalthicknessofthetilecomprisesoftwolayersi.e.,theupperlayerandthe
backing.Thethicknessoftheupperlayer(alsoknownaswearinglayer)variesfrom5
mm.to6mm,anditconsistsofmixofcement,marblechipaggregatesandpigment(if
required)takeninsuitableproportions.Thebackingofthetileconsistsofleanermixof
cementandaggregatesusuallytakeninproportionof1:3.
Chequeredtiles are available in the following standard sizes.
(i) 200 x 200 x 22 mm. (ii) 250 x 250 x 22 mm. (iii) 300 x 300 x 22 mm.
The method of laying tile is identical to that of terrazzo tile flooring except that the
polishing of the tile has to be done by hand.
(ii) CHEQUERED TILE FLOORING Introduction & Laying Process
Glazed tiles are available in the following standard sizes:
(i) 100 x 100 x 5 or 6 mm. (ii) 150 x 150 x 5 or 6 mm.
The tiles have only top surface glazed.
(iii) GLAZED TILE FLOORING Introduction
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P.V.C.tilesarenowmanufacturedinvarietyofshadesanddesignandarebeingcommonlyusedin
residentialaswellasnon-residentialbuildings.Itgivesadecorativefloorfinishwhichisresilient,
smoothandcanbecleanedeasily.
(iv) PVC TILE FLOORING Introduction
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➢Itcanbelaidoverapreparedbasewhichcanbeofconcrete,timberetc..
➢Priortolayingthetiles,itisnecessarytoseethatthebaseisperfectlydryand
broughttothetemperatureatwhichitwillbewhileinuse.
➢ThelayoutoftheP.V.C.tiles(totherequireddesign/pattern)ismarkedonthe
basewiththehelpofguidelines.
➢Adhesiveofspecifiedmakeisthereafterappliedonthebaseandthebackofthe
P.V.C.tileswiththehelpofanotchedtrowel.
➢Layingoftilecommencewhentheadhesivehassetsufficiently(saywithinhalf
anhour).
➢Afterlaying,thetilesarepressedsuitablywithwoodenrollers(weighting5kg.)
toensureintimatecontactwiththebase.
➢Extraadhesivethatoozesoutiswipedoffandtheflooringisfinallycleanedwith
warmsoapwaterbeforeuse.
(iv) PVC TILE FLOORING Laying Process
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Merits:
i.It is non-absorbent.
ii.It is easily repairable in patches.
iii.It offers pleasant appearance.
iv.It is durable.
v.It permits quick laying of floor.
vi.It is resistant to wear and has fairly good strength.
Demerits:
i.This type of construction is very costly both in initial cost aswellas in maintenance.
ii.Terrazotile and glazed tile flooring becomes slippery whenwet.
iii.PVC tile flooring gets damaged when in contact with burningobjectslike paper,
match stick etc.
Merits & Demerits TILED FLOORING
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This type of flooring is commonly used both in residential as well as public buildings.
CEMENT CONCRETE FLOORINGIntroduction
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Themethodoflayingcementconcreteflooringongroundfloorofabuildingcanbe
broadlydividedinthefollowingsteps.
➢Preparationofsub-base.Theearthfillinginplinthisconsolidatedthoroughlysoas
toensurethatnoloosepocketsareleftinthewholearea.A10to15cm.thicklayer
ofcleancoarsesandisthenspreadoverthewholearea.Thesandlayera
consolidatedanddressedtotherequiredlevelandslope.
➢Layingofbaseconcrete.Thebaseconcreteusedunderfloorsmaybecement
concreteorlimeconcretelaidtoathicknessvaryingfrom7-5to10cm.Incaseof
cementconcrete,themixcommonlyusedis1:5:10(1cement:5sand:10stoneor
overburntbrickaggregates40mm.nominalsize).Limeconcrete,ifused,shouldbe
madeupoutof40mm.nominalsizestone/overburntbrickaggregateand40%
mortarcomprisingof1lime2sand/surkhior1lime1surkhi/ash:1sand.
➢Thebaseconcretelayerisdepositedoverthoroughlytampedandlevelledtoa
roughsurface.
CEMENT CONCRETE FLOORINGLaying Process
TIMBER FLOORINGIntroduction
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Inhillyareas,wheretheclimateisdampandwoodiseasilyavailable,woodenfloorsprove
economicalandassucharecommonlyused.Itsuseisnotextensiveinotherplaces.However,they
areusedfordancinghalls,carpentryhalls,auditoriumsetc.Inthistypeoffloor,preventionof
dampnessisofgreatimportanceandhenceeveryprecautionistakentocheckthedampnessfrom
risingabove.
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TIMBER FLOORINGLaying Process
➢Theentireareaofgroundbelowtheflooriscoveredwitha15cm.layerofcement
concrete.Thislayeriscalled"siteoroversiteconcrete".
➢Timberfloorsessentiallyconsistofboardingsupportedontimberjoistscalled
bridgingjoistsorfloorjoistswhicharenailedtowallplatesattheirendsand
supportedbyintermediatewallscalledsleeperordwarfwalls,alongtheirlength.
➢Thesleeperwallsaregenerally10cm.thickandarehoney-combed.Theyare
intendedtoreducethespanforthefloorjoists.Thesleeperwallsareseldom
spacedmorethan18m.apartandarehoney-combedtoenablefreecirculationof
airinthespacebelowthefloor.
➢Longitudinaltimbermemberscalled'sleeperplates'arefixedonthetopofsleeper
walls.Thefloorjoistsaresecuredtothesleeperwallsbybeingnailedtothesleeper
wallplates.
➢Adamp-proofcourselayerislaidimmediatelybelowthewallplatestopreventthe
risingofdampness.Thehollowspacebetweentheflooringandtheoversite
concreteiskeptdryandfullyventilated.
TIMBER FLOORING
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The selection of flooring material is done based on the following factors:
➢Initial cost
➢Durability
➢Hardness
➢Smoothness
➢Cleanliness
➢Appearance
➢Sound insulation
➢Thermal insulation
➢Damp proof
➢Fire resistance
➢Maintenance
FACTORS AFFECTING SELECTION OF FLOORING MATERIAL
Glass Flooring
Glassisusedasflooringmaterialforspecialconditionsliketotransmitlightfromupperfloortolowerflooretc.Theyare
availableintileswhicharefixedincloselyspacedframes.Eventhoughitisverycostlyitprovidesbeautifulappearance.
OTHER FLOORING MATERIALS
Ceramic Flooring
Ceramictilesarefamousfloorcoveringmaterials.Ceramicisinorganicmaterialanditpossess
propertieslikegoodcompressiveresistance,brittlenessandhardnessetc..
OTHER FLOORING MATERIALS
Plastic Flooring Tiles
Plastictilesorpolyvinylchloride(PVC)tilesarewidelyusednowadayswhicharelaidonconcretebase.
Thesetilesareavailableindifferentshapes,sizesandcolors.Plastictilesareofslipperynatureandcanget
easilydamagedbyfire.
OTHER FLOORING MATERIALS
Cork Flooring
Corkisobtainedfromthecorkoaktree.Itisusedasflooringmaterialintheformofcarpets.Thesecarpetsare
noiselessandarerequiredmainlyinlibraries,theatersetc.Corktilesarealsoavailablewhicharemadefromhigh
gradedcorkbarusingcompressioninmoldings.
OTHER FLOORING MATERIALS
Linoleum Flooring
Linoleumistheproductobtainedbyoxidizinglinseedoilingum,resins,pigments,corkdustetc.
Itisavailableinsheetswhichisgenerallyusedascoveringforconcreteorwoodenflooring.The
sheetsmaybeplainordesignprinted.
OTHER FLOORING MATERIALS
Asphalt Flooring
Asphaltishighlyviscousliquidformofpetroleum.Asphaltisusedasflooringmaterialindifferentways.
Ifasphaltandsandaremixedin1:2proportionthenitiscalledasphaltmasticwhichispouredon
concretebaseasflooringcover.Ifsandisreplacedbymarblechipsthenitiscalledasasphaltmosaic.
Asphalttilesarealsoavailablewhicharepreparedfromtheasphaltfibers,inertmaterialsandmineral
pigments.
OTHER FLOORING MATERIALS
Rubber Flooring Tiles
Rubbertilesorsheetsarealsoavailableinmarketforflooringpurposes.They
aremadefrompurerubberwhichismixedwithcottonfibers,asbestosfiber.
Suitableadhesivesareusedtofixtherubbertileswithconcreteorwooden
base.Rubberflooringisnoiselessandprovidedinlibraries,officesetc.
OTHER FLOORING MATERIALS