1. The document discusses different types of recyclable building boards and papers that can be used in construction, including plywood, hardboard, insulating fiberboard, chipboard, particle board, gypsum board, strawboard, asbestos-cement board, corkboard, paperboard, and mineral fiberboard. 2. It provides details on the composition and manufacturing process for each type of board. For example, it explains that plywood is made by bonding thin layers of wood at right angles, and each layer is called a veneer. 3. The document outlines common applications of these boards in architecture, as furniture, ceiling designs, building structures, and interiors. Building boards offer various benefits

1. RECYCLABLE WASTE PRODUCTS,
BUILDING BOARDS
AND PAPERS

2. BUILDINGBOARDS
–A group ofsheets ofbuilding materialsoftenfacedwith paperor vinyl, suitableforuse asa finished
surfaceonwalls ,ceiling, etc.
-Flat,relatively thinin sectionandhavebeen madetostandardsizes,(usually4x8 ft)
-usedfora varietyof purposes

3. Kinds of
BuildingBoards

4. 1. PLYWOOD
2. HARDWOOD
3. INSULATING FIBERBOARD
4. CHIPBOARD
5. PARTICLE BOARD
6. GYPSUM BOARD
7. STRAWBOARD
8. ASBESTOS-CEMENT BOARD
9. CORKBOARD
10. PAPERBOARD
11. MINERAL FIBERBOARD
12. PLASTIC FOAMBOARDS

5. 1. Plywood- is made by bonding togetherthin layers of wood in a way that the grain
of each layer is at right angles to the grain of each adjacentlayer.

6. Each layerof plywood is called aVENEER, and commonlymade by rotary cutting.
Rotarycutting–a log isfixedin lathe androtatedagainsta
knifeso thatthe veneer is peeled fromthe log in continuous
sheet.

7. 1. Marine plywood – absolutely waterproofed
2. Fancy plywood – nonwaterproofed, used for panelling and cabinets
-narra bookmatched, kalantas rotarycut, lauan rotarycut, dao bookmatched , ribbon grained
tanguile, rosewood
3. Ordinaryplywood
4. Form plywood
5. Pre-finished plywood paneling
a. Paper – overlaid
b. Printed – comes in14 color tones, no need to varnish orpaint. Nailedthrough v-
grooves or glued.
*bookmatched–the assemblingof wood veneersfrom the sameflitch so that successivesheetsare alternatedface up and
face down.
*ribbon grained– a seriesof stripsuniting severalparts.

8. 2. Hardboard – madefromprocessedwoodchips.
- Theyareuniform,hard,grainless sheets,smoothandwithoverlaps.Used for
interiorpanelsanddurablesidings.

9. Gradesof Hardboard :
a.Standard–light, flexible tobequiteeasily bent,light brownin colorandnotsuitableforexteriorwork.
b.Tempered Hardboard – brittleand stiffbutresistanttowaterpenetration,darkbrownin color,ideal
forexterioruse.
c.Low Density –notasstronganddurableas1 & 2 ,fordecorativeboardsandoftenusedas blackboard.
Unlikesolidwood,hardboardisvery homogeneouswith
nograin. A woodveneer canbegluedontoit togive the
appearanceofsolid wood.OtheroverlaysincludeFormica,
laminatedpapers,ceramics,andvinyl.

10. PRODUCTSOF HARDBOARD

11. 3. InsulatingFiberboard
- Madefromthreetypesof fiber–wood,sugarcane,asbestos,andbinder, formedinto aboard.

12. Two BasicGrades
• InsulatingGrade
–made upforinsulating,decorativepanelsandceiling tiles, V-notchplasterbase,and
roofinsulation
• Sheathing Grade
– surfaces and edges are coated with
asphalt and or with fibers impregnated with asphalt
during manufacture.

13. Woodfibers -Producedby pressing logs againsta
grindstonewhich breaks downthe
woodinto fibers
CaneFiberboard – shreddedcaneand
processedinto fibers.
MineralFiberboard –madeformasbestosfibersmixed
withcementing agentideal forfireproofingand
acousticalpurposes.

14. 4. Chipboard
made from building boardparticles and a binder (phenolic resin/urea formaldehyde
glue) often faced with veneer.

15. Chipboard is made by binding phenolic resin or urea formaldehyde glue in the form of a 4
ft. wide board.
Chipboards are usedboth for interior and exterior which include of sheathing for walls,
and roof, subflooring, and fencepaneling.
Sub - types are :
a.Plain –maybeunsanded,sandedon oneside orsandedontwosides.
b. Patterned–have one groovedsurfaceeitherevenly or random.

16. 5. ParticleBoard –
A hardboard madefrom relativelysmallparticles,graduatedfrom coarseat the centerof the
board to fineat the surfaceto produce a product witha smooth densesurface.

17. Bothsurfacesaresanded,andone surfaceand
the edges maybefilled toprovidea still
smootherdensesurfaceforparticular
uses.
Commonusesarefloorunderlay,using
polyvinylacetateadhesive, divergent
pointstaplesorannular-grooved
underlayflooringnailsforfastening.

18. 6.GypsumBoard
is a panel made of gypsum plaster pressed between two thick sheets of
paper. It is used to make interior walls and ceilings.

19. Variations:
A. Special paperface where variety of wood patterns can beprinted and can be
nailed with colored nails
B. Glue laminated to an interior surface toproduce a wood-grain effect.
C. Vinyl sheetfaced made to imitate a textile surface held by glue, aluminum or
plastic moldings.

20. 7.Strawboard
- hardboard madeof compressed wheat straw, processedat 350°F - 400°F with
tough Kraftpaper
-Strawboardis Envirowallspanel madeof100% wastestraw.

21. Grades
Structuralboard – used fornon- bearingpartitions,plasterbase,
insulatingpurposes, exteriorsheathing,roof decking,and inner
formfacefor concretebasementwall.
Insulationgrade – intendedprimarilyforroof deckinsulation.

22. 8. Asbestos Cement Board
a dense, rigid,boardcontaininghigh proportion of asbestosfibers
bondedwithPortlandcement.

23. Resistanttofire,flameandweathering,haslowresistancetoheatflow.
Usedas buildingmaterialinsheetformandcorrugatedsheeting.Alltypesmust
bedrilledforinsertionofscrews,boltssandotherfasteners.

24. from the outer bark ofthe cork oak tree, cork granules are mixed with synthetic resin,
compressed andformed into sheet from 1 – 6 in. thick and baked underpressure into
rigid boards.
Used exclusively as thermal insulating material and for vibration control.

25. 10. Paperboard
Either:
a. A paperpulppressed intoboards3/16”,or¼” thick,4’ wide, and6-8’long. Usuallyonesurfaceis
primed foreasierfinishing
b. A layerofstiffpaperfoldedintocorrugatedformandfacedonbothsides witha thickpaperbacking,
cemented tothe core

26. 11. Mineralfiberboard
thick mats of mineral
fibers (glass/rock
wool) coveredwith a
backing of stiff
paperon one or both sides to form rigid boards, ranging in thickness from ½ to 2in.
Theusual board size is 24 x 48in. and areused for roof deck insulation and are
cementedto the deck with asphalt adhesive.

27. polystyrene & polyurethane plastics are formed by a patented process to about 40 times
their original volume.
This foamed material is molded into boards from ½ - 3in. thick, 12 or 24in. wide and
from 4 to 12ft. long .

28. Used for perimeterinsulation for concrete slabs, for wall and roof-deck insulation, and
for roof decks when properly supported.
These plastic boards have high insulation value and relatively high compressive
strength, and areflexible enough to fit over curvedsurface.

29. Propertiesof Boards/ Wood
1. Strong across as well as alongthe panel ,more
pliesmeans a near equal instrength in both
directions.
2. Shrinkingand swellingcan be neutralized because
woodgrains run in onedirectioninhalf whilethe
other half is at right angles.
3. Splitin its planeis impossible,because of
successive layers at right angles to each other,

30. 4. Plywoodcan bent more easilythanordinary woodof
the same thickness.
5. The curvature depends onthickness and islimitedby
strengthof outer pile in tensionand inner pilesin
compression.
6. Plywoodoffers innumerable possibilitiesfor decoration
because of great variety in colors andtextures.
7. Decorative effects is alsopossibleto the face ply by
pressure, sandblastingor etching with wire brushes.

31. BUILDING BOARDS USED IN
ARCHITECTURE

32. AS FURNITURE

33. AS CEILING DESIGN

34. AS BUILDING STRUCTURE

35. AS INTERIOR