Si loo go’aamiyo muddada qalajinta ee alwaaxyada dhogorta leh ee la xidhiidha arrimo kala duwan, habka lagu sameeyay Machadka Cilmi-baarista Sayniska ee Dhexe ee Farsamada Qoryaha Farsamada ayaa lagula talinayaa.

Habka ayaa saadaaliyay isku-xirnaanta miisaska1-8. Waxay tixgeliyaan nooca qoryaha, dhumucda, ballaca iyo dhererka alaabta, tayada qalajinta, dhismaha qalajiyaha, qoyaanka bilowga iyo ugu dambeeya.

Isku-xirnaanta iyadoo loo eegayo nooca iyo cabbirka alwaaxdu

Shaxda1- Isku-dhafan iyadoo loo eegayo nooca alwaax

Shaxda1: Isku-dhafan iyadoo loo eegayo nooca alwaax
Nooc alwaax ah Spruce, fir Bor Geed beedka Beech geed Larch Geed
Iskudubarid 0 4 26 41 46 71

Shaxda2- Isku-dhafan iyadoo loo eegayo dhumucda alaabta

Shaxda2: Isku-dhafka sida waafaqsan dhumucda alaabta
Dhumucda, mm 13 16 19 22 25 30 35 40 45 50 55 60
Iskudubarid 0 9 16 23 28 36 43 49 54 59 65 70
Dhumucda, mm 70 80 90 100 110 120 130 140 150 180 220 280
Iskudubarid 80 89 97 104 110 116 121 126 130 142 155 171

Shaxda3- Isku-dhafan iyadoo loo eegayo ballaca alaabta

Shaxda3: Isku-dhafka sida waafaqsan ballaca alaabta
Saamiga ballaca maaddada ilaa dhumucdeeda W:D ku1,5 2 3 5 10
Iskudubarid 0 5 9 14 18

Shaxda4- Isku-dhafan iyadoo loo eegayo dhererka alaabta

Shaxda4: Isku-dhafan iyadoo loo eegayo dhererka alaabta
Dhererka, m 0,3 – 0,4 0,5 – 0,6 0,7 – 0,8 0,9 – 1,0 dhaaftay1,0
Iskudubarid 0 6 11 14 15

Coefficients iyadoo loo eegayo tayada qalajinta iyo qalajiyaha

Shaxda5- Isku-dhafan iyadoo loo eegayo tayada qalajinta ee alaabta

Shaxda5: Isku-dhafka sida waafaqsan tayada qalajinta ee alaabta
Qaybta qalajinta Qalajinta alwaaxda caadiga ah (qaybta II) Qalajinta tayada sare leh ee alwaaxyada alaabta guriga, samaynta gaadhiyada... (Qaybta I) Qalajinta tayada sare leh ee samaynta taayirrada, qaansoroobaad geedkii.
Iskudubarid 0 8 20

Shaxda6- Isku-dhafka sida waafaqsan naqshadaynta qalajiyaha

Shaxda6: Isku-dhafka sida waafaqsan naqshadaynta qalajiyaha
Nooca nuxurka SRC Iyada oo wareegga ka soo horjeeda Wareegga wadista dabiiciga ah ama daciifka ah Dhuumaha wareegga dabiiciga ah
Iskudubarid 0 4 8 15

Walxaha shuruuda ah ayaa la tixgaliyay marka la xisaabinayo isku-xirnaanta. Walxaha shuruudaysan macnaheedu waa looxyada geed qaro weyn50 mm, balac150 mmoo dhererkeedu dhammaatay1 m, oo leh qoyaan hore60%iyo ugu dambayn12%. Qalabkan, oo lagu dhejiyay suuf qaro weyn25 mm, waa in lagu qallajiyaa qalajiyaha leh wareegga hawada dabiiciga ah inta lagu jiro6maalmo.

Isticmaalka isku-beegyada lagu sheegay jaantusyada1-8, ereyga caadiga ah ee qalajinta alwaaxyada dhogorta ayaa la go’aamin karaa.

Tusaalaha Xisaabinta

Waa lagama maarmaan in la go’aamiyo muddada caadiga ah ee qalajinta looxyada geed qaro weyn40 mm, balac20 mm(qiyaasta ballac ilaa dhumucda200:40=5) oo dhererku dhaafo1,0 m. Looxyada waxaa loogu talagalay in lagu soo saaro xargaha caleenta albaabka, ie. tayada qalajinta waa qaybta I, waxaana lagu qallajiyaa qalajiyaha oo leh wareegga hawada ee degdega ah ee qoyaanka hore.60%qoyaan xad dhaaf ah9%.

Isku-dhafka u dhigma ayaa bixiya:

K = 4 + 49 + 14 + 15 + 8 + 0 + 82 = 172

Isku-xireyaasha iyadoo loo eegayo huurka iyo heerarka qallajinta

Shaxda7- Isku-dhafka sida waafaqsan qoyaanka bilowga iyo ugu dambeeya ee alwaaxyada la jarjaray

Shaxda7: Isku-dhafan iyadoo loo eegayo qoyaanka bilowga iyo ugu dambeeya ee alwaaxyada la jarjaray
Qoyaanka hore,% Qoyaanka kama dambaysta ah,%
6 7 8 9 10 11 12 13 14 15 18 20 22 25
20 62 56 50 45 38 32 25 18 9 0 / / / /
25 70 65 60 55 50 45 41 35 30 25 6 / / /
30 75 70 66 62 58 54 50 46 42 38 25 15 30 /
35 79 75 71 67 64 60 57 54 50 47 38 29 21 7
40 82 78 75 71 68 65 62 59 56 53 44 38 32 21
45 85 81 77 75 72 69 66 63 61 58 50 45 40 31
50 87 83 80 77 75 72 69 67 65 63 55 51 46 38
55 89 85 82 80 77 75 72 70 68 65 59 55 50 44
60 90 87 84 82 79 77 75 72 70 68 62 58 55 48
65 92 89 86 84 81 79 77 75 73 71 65 61 58 52
70 93 90 88 85 83 81 78 76 75 73 67 64 61 55
75 94 92 89 87 85 82 80 78 77 75 69 66 63 58
80 95 93 90 88 86 84 82 80 78 77 71 68 65 61
85 96 94 91 89 87 85 83 82 80 78 73 70 67 63
90 97 95 92 90 88 86 85 83 81 79 75 72 69 65
95 98 96 93 91 89 87 86 84 82 81 76 73 71 67
100 99 97 94 92 90 88 87 85 83 82 77 75 73 69
110 101 98 96 94 92 90 89 87 85 84 80 77 75 74
120 102 99 97 95 94 92 90 89 87 86 82 79 77 76
140 104 102 100 98 96 95 93 92 90 89 85 83 81 78

Shaxda8- Isku-dubarid dib-u- xisaabinta habka qalajinta wakhtiga iyadoo loo eegayo hoos u dhaca huurka

Shaxda8: Isku-xirnaanta dib-u- xisaabinta habka qalajinta wakhtiga iyadoo loo eegayo hoos u dhaca qoyaanka
Luminta qoyaanka alaabta, % 60-50 50-40 40-35 35-30 30-25
Isku dheelitirnaanta marxaladda qalajinta 0,11 0,14 0,08 0,10 0,11
Luminta qoyaanka alaabta, % 25-20 20-15 15-12 12-10 10-8
Isku dheelitirnaanta marxaladda qalajinta 0,14 0,17 0,15 0,11 0,14

Mawduucyada la xidhiidha: softwood iyo alwaax adag, qoryo qallajin, heerkulka iyo huurka hawada inta lagu jiro qalajinta alwaax, wax soo saarka daaqadaha iyo albaabada alwaax iyo codsiga xigashada.