Structure and Wood Properties
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Transcript of Structure and Wood Properties
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7/29/2019 Structure and Wood Properties
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Eonturo Wmroo
Ahsin Skkg Nmhrhntoristins
Ahsin nkjstituojts kb wkkg68) Noeeuekso -34/) tmo pri`hry nkjstituojt kb wkkg
1) Eicjij -~1?/) tmis is tmo nkjstituojt wminm civos
tmo wkkg strojctm
>) Oxtrhntivo6 nkjsistijc kb thjjij% sthrnm% kies% rosijs%
bhts% hjg whxos
7) Hsm6 bkr`ijc `ijorhes
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Wwk ahsin typos kb wkkg
^KBWSKKG^6
^kbtwkkgs hro wkkgs oxtrhntog brk` nkjiborkus kr
ovorcrooj tross* Tijo% spruno% bir% noghr% hjg rogwkkg
hro hee skbtwkkgs aut tmoy mhvo gibborojt prkportios
hjg prinos hjg hro tmorobkro usog ij gibborojt whys ij
auiegijc nkjstruntikj*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Wmo cojorhe phttorj kb skbtwkkg uso ij auiegijc
nkjstruntikj6
8) Brh`ijc6 Tijo% spruno
1) Aoh`s6 Bir% noghr% roswkkg
>) ^igijc6 Noghr% roswkkg7) ^mijceos6 Noghr
MHQGSKKG^6
Aonhuso tmo troos tmht prkguno mhrgwkkgs thlo `unm
ekjcor tk `hturo tmhj tmkso tmht prkguno skbtwkkgs%
mhrgwkkgs cojorheey nk``hjg `unm micmor prinos%
mhrgwkkgs hro cojorheey usog kjey bkr bijismijc*
Qoehtikjsmip aotwooj troo crkwtm hjg wkkg strojctm6
Skkg crkws ij hj hjjuhe bhsmikj% witmnkjnojtrin rijcs brk` tmo nojtor -ij nrkss
sontikj) `hrlijc tmo aocijjijc hjg ojg
kb ohnm yohrs crkwtm*
So spohl kb tmoso rijcs hs tmo crhij kb
tmo wkkg* Smoj roborrijc tk wkkg wo
spohl kb girontikj hs aoijc phrheeoe tk% kr
hnrkss tmo crhij< `ohjijc rospontivoey6
vortinheey hjg mkrizkjtheey witm rospont tk
tmo kricijhe sthjgijc troo*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Skkg is twk tk bivo ti`os strkjcor phrheeoe tk tmo
crhij*
Smoj spohlijc kb aoh`s it is nk``kj tk spohl kb
strossos witm rospont tk tmoir girontikj6
8) Nk`prossikj is nhusog ay pusmijc tmoojgs kb tmo aoh` tkcotmor*
1) Wojsikj is nhusog ay pueeijc tmo ojgs
kb tmo aoh` hphrt*
>) ^mohr is nhusog ay sigowhys bkrno% i*o*
bkrno jkt hekjc tmo ekjc hxis kb tmo aoh`*
Skkg is >4/ strkjcor ij nk`prossikj tmhj ij tojsikj*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Skkg is strkjcor ij rosistijc smohr hnrkss tmo crhij
tmhj it is phrheeoe tk tmo crhij*
@kisturo nkjtojt hjg sohskjijc6
Jow wkkg% tmht is wkkg ronojtey nut gkwj% nkjthijsh ehrco h`kujt kb `kisturo -tmis is ljkwj hs crooj
eu`aor)* Kvor ti`o% tmo `kisturo ovhpkrhtos% hjg tmis
gryijc nhusos tmo wkkg tk smrijl% whrp% hjg twist* Ij
cojorhe% mhrgwkkgs smrijl `kro tmhj skbtwkkgs*
@kisturo nkjtojt hjg sohskjijc6
@kist wkkg is suafont tk rkt% hjg tmorobkro% gonhy* Ij
krgor tk rosist gonhy% tmo `kisturo nkjtojt ij wkkg
`ust ao aoekw 14/* Nk``kjey% wkkg is griog tk
hakut =/ `kisturo nkjtojt bkr ijtorikr usos% hjg 81/
`kisturo nkjtojt bkr brh`ijc purpksos*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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^ohskjijc6
^ohskjijc is tmo prknoss kb prophrijc wkkg tk rosist
gonhy* Wmo `otmkgs kb sohskjijc hro hs bkeekws6
8) Hir gryijc -bkr twk tk six `kjtmos)
1) Liej gryijc
>) Trossuro troht`ojt6 ij wminm tmo wkkgis i`procjhtog witm nmo`inhes tmht
provojt gonhy*
^hwijc kb trujls6
8) Tehij shwijc6 tmis `otmkg rosuets ij tmo
crohtost yioeg*
1) Xuhrtor shwijc6 `kro oxpojsivo tmhj
pehij shwijc% tmis `otmkg eohvos tmo crhij
oxpksog% hjg rosuets ij eoss whrpijc kb
wkkg*
>) Qibtshwijc6 rhgihe nuttijc% usog bkr
oxpojsivo wkkgs*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Nmhrhntoristins kb nk``ornihe eu`aor
_jits kb `ohsuro% sizos6
Auel eu`aor is `ohsurog ij AKHQG BOOW* Kjoakhrg bkkt is gotor`ijog hs 8 tminl ] 81] 81 ij
vkeu`o* Kjo tmkushjg akhrg boot is nk``kjey
haarovihtog witm h nhpithe @* Akhrg `ohsuro is
haarovihtog a*`*
^thjghrg ijnm `ohsurog nrkss sontikjs6
8) Jk`ijhe sizo is tmo sizo kb h piono kbwkkg aobkro it is pehjog ht tmo `iee* Wmis
is tmo sizo ay wminm tmo wkkg is skeg*
Wmht is% h 1 x 7 is twk ijnmos ay bkur
ijnmos ij nrkss sontikj AOBKQO it is
pehjog*
1) Grossog sizo is tmo hntuhe sizo kb tmo
purnmhsog eu`aor* It is cojorheey
s`heeor ij ovory gi`ojsikj tmhj tmo
jk`ijhe sizo* Wmus h 1 x 7 is roheey
kjey 8 x > *
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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^thjghrgizhtikj kb sizos6
Wmo jk`ijhe sizos kb nk``orniheey hvhiehaeo eu`aor
hro sthjghrgizog aktm bkr eojctm% hjg bkr nrkss sontikj*
Wmo rosuet is ekwor nksts por akhrg bkkt tmhj bkr wkkg
nut ht kbb sizos*
8) Eojctms hro sthjghrgizog ij boot ht 1%
=% 84% 81% 87% " 82*1) Nrkss sontikj is sthjghrgizog ij
ijnro`ojts kb 1 ijnmos6
h* 8x1% 7% 2 =% 84% "
81
a* 1x1% 7% 2% =% " 84
n* 7x7% 2% =% 84% &81
Crhgijc kb eu`aor
Eu`aor is crhgog bkr strojctm% i`porbontikjs -sunm hs
ljkts)% hjg hppohrhjno*
Nhjhgihj eu`aor is crhgog ay kjo kb tmo bkeekwijc
krchjizhtikjs6
8) AN Eu`aor @hjubhnturors
Hssknihtikj
1) Sost Nkhst Eu`aor Ijspontikj Aurohu
>) Sostorj Skkg Trkgunts Hssknihtikj
7) Ohstorj ^pruno Crhgijc Nk``ittoo
?) Ohstorj Tijo Crhgijc Nk``ittoo
2) Nhjhgihj Eu`aor`hjs Hssknihtikj
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Cojorhe crhgijc bkr wkkg nkjstruntikj6
8) _tieity pkkrost% jkt cojorheey usog bkr
nkjstuntikj
1) ^thjghrg% nkjstruntikj nk``kjey
usog bkr auiegijc
>) ^oeont strunturhe aost quheity% usog bkr
ehrcor strunturhe `o`aors
Gibborojt snmo`os oxist bkr wkkgs witm sponibin usos6
8) Gonlijc wkkg ^oeont% Nk``ornihe
crhgos
1) ^kbtwkkg sigijc H%A%N%G
>) Mhrgwkkg sigijc Birsts% ^onkjgs%
^oeont% Jk* 8 Nk``kj
7) Noghr smijceos 8% 1% >
@hj-@hgo Skkg Trkgunts
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Teywkkg6
Rojoors kb wkkg hro tmij ehyors kb wkkg kathijog ay
rkthry nuttijc* Teywkkg smoots hro nk`pksog kb
sovorhe ehyors kb wkkg vojoor% ceuog tkcotmor*
8) Ohnm ehyor kb peywkkg mhs its crhij
kbbsot 94 gocroos tk tmo hgfkijijc ehyors
tk provojt whrpijc*1) Teywkkg is nkjstitutos kb bhnno peios
hjg nkro peios*
Teywkkg6
Ohnm bhno pey is crhgog hnnkrgijc tk hppohrhjno hjg
gurhaieity kj h snheo kb H tk G ij gosnojgijc quheity%
hs bkeekws6
h* H0 s`kktm hjg phijthaeo
a* A0nkjthijs rophir peucs% hjg+ kr
ticmt ljkts
n* N0 nkjthijs ljkts% speits% hjg+kr
peucs
g* G0 jkt suithaeo tk ao oxpksog% ijjor
kjey
o* J0 is h sponihe nhtockry wmoro h
bijism vojoor -sunm hs whejut) is hppeiog
tk tmo bhno< it ijginhtos broogk` brk`
gobonts*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Teywkkg is nk``kjey crhgog witm twk eottors< kjo bkr
ohnm bhno pey* ^k`o nk``kj crhgos kb peywkkg hjg
tmoir nk``kj usos hro hs bkeekws6
h* JJ% JH% JA usog bkr burjituro%
nhaijotwkrl
a* HH usog wmoro aktm sigos wiee ao
visiaeon* HA usog tk nkvor ujbijismog brh`ijc
g* HN usog bkr rkkb gonlijc
o* AN usog bkr cojorhe utieity
b* AA usog bkr bkr`wkrl
c* NN usog bkr rkucm+to``pkrhry
situhtikjs
Teywkkg is hvhiehaeo ij Ijtorikr hjg Oxtorikr Crhgos%
wminm hro gotor`ijog ay wmotmor kr jkt `kisturo
rosisthjt hgmosivos hro usog -Oxtorikr Crhgo is
nmhrhntorizog ay `kisturo rosisthjno)*
Mhrgakhrg
Mhrgakhrg gosnriaos h `htorihe `hgo
brk` wkkg biaors wminm hro akjgog ujgor
moht hjg prossuro*
Its twk bkr`s hro ahsin hjg probijismog
-wminm is ljkwj hs `hskjito)* @hskjitonhj ao whtorprkkbog ib jonosshry*
Nk``kj usos ijneugo ujgorbekkrs%
nhaijot wkrl% hjg noieijcs*
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon
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Thrtineo akhrg6
Thrtineo akhrg gibbors brk` mhrgakhrg ij
tmht tmo nmips kr wkkg pionos hro ceuogtkcotmor witm rosijs hjg ktmor aijgors*
It nk`os ij ijtorikr hjg oxtorikr crhgos*
Hspojito is h lijg kb phrtineo akhrg witm
rhtmor ehrco nkjstituojt biaros* It is
nk``kjey usog bkr smohtmijc hs h
suastituto bkr peywkkg*
Nk`pksito akhrg6
Nkjsists kb h mk`kcojokus ehyors kb
robijog wkkg prkgunt -nhrg phpor)*
I`procjhtog witm hspmhetin `htorihes*
Aonhuso it is whtorprkkb% it is usog hs
eicmt nkjstruntikj smohtmijc*
Ckkg hnkustin quheitios% it is kbtoj usog
bkr noieijcs hjg ijtorikr whee bijismos*
Tuep hjg Thpor prkgunts6
8) Auiegijc phpor is boet phpor
i`procjhtog witm hspmhet% sk`oti`os
roijbkrnog witm biarocehss* It is
whtorprkkb% usog hs smohtmijc phpor% hjg
rkkbijc boets -hnts hs vhpkr ahrrior)*
1) Hspmhet ^mijceos hro rhcs kb wkkg hjg
puep% wminm hro shturhtog witm hspmhet*
Crhjueos kb `hraeo hro hbbixog tk tmo
oxpksog surbhno*
>) Nkjnroto bkr`s6 rkujg nkjnroto
nkeu`js hro kbtoj pkurog ijtk h skjktuao6
h nyeijgor kb phpor nkhtog witm whx%
wminm is pooeog hwhy*
7) Hnkustin biaorakhrgs -ahsinheey tmo
sh`o hs nk`pksito akhrg)
o> bieo6+++C6+Ogunhtikj+Eonturo jktos ij htorihes hjg tostijc+eon