Qaar ka mid ah hababka caadiga ah ee xisaabinta miisaanka alaabta birta ah:
Unugga AragtidaMiisaankaKaarboonbirPipe (kg) = 0.0246615 x dhumucda gidaarka x (dhexroorka ka baxsan - dhumucda gidaarka) x dhererka
Miisaanka birta wareega ah (kg) = 0.00617 x dhexroor x dhexroor x dhererka
Miisaanka birta labajibbaaran (kg) = 0.00785 x ballaca dhinac x dhererka dhinac
Miisaanka birta laba geesoodka ah (kg) = 0.0068 x ballac dhinaca ka soo horjeeda x ballaca dhinac ka soo horjeeda x dhererka
Miisaanka birta Octagonal (kg) = 0.0065 x ballac dhinaca ka soo horjeeda x ballaca dhinac ka soo horjeeda x dhererka
Miisaanka Rebar (kg) = 0.00617 x dhexroor la xisaabiyay x dhexroor la xisaabiyay x dhererka
Miisaanka xagasha (kg) = 0.00785 x (ballaca dhinaca + ballaca dhinaca - dhumucda dhinac) x dhumucda dhinaca x dhererka
Miisaanka birta fidsan (kg) = 0.00785 x dhumucdiis x ballaca dhinac x dhererka
Miisaanka saxanka birta ah (kg) = 7.85 x dhumucda x aagga
Miisaanka bar naxaasta wareega ah (kg) = 0.00698 x dhexroor x dhexroor x dhererka
Miisaanka bar naxaasta wareega ah (kg) = 0.00668 x dhexroor x dhexroor x dhererka
Miisaanka bar aluminium wareega ah (kg) = 0.0022 x dhexroor x dhexroor x dhererka
Miisaanka bar naxaasta labajibbaaran (kg) = 0.0089 x ballaca dhinaca x ballaca dhinac x dhererka
Miisaanka bar naxaasta labajibbaaran (kg) = 0.0085 x ballac dhinaca x ballaca dhinac x dhererka
Miisaanka bar aluminium oo laba jibaaran (kg) = 0.0028 x ballaca dhinac x dhererka dhinac
miisaanka bar naxaasta ah ee guduudan ee laba geesoodka ah (kg) = 0.0077 x balac dhinac ka soo horjeeda x ballac dhinac ka soo horjeeda x dhererka
miisaanka bar naxaasta ah ee laba geesoodka ah (kg) = 0.00736 x ballac dhinaceed x ka soo horjeeda ballac dhinaca x dhererka
Miisaanka bar aluminium ee laba geesoodka ah (kg) = 0.00242 x ballac dhinaca ka soo horjeeda x ballac dhinac ka soo horjeeda x dhererka
Miisaanka saxanka naxaasta ah (kg) = 0.0089 x dhumucdiisuna x ballac x dhererka
Miisaanka saxanka naxaasta ah (kg) = 0.0085 x dhumucdiisuna x ballac x dhererka
Miisaanka saxanka aluminiumka (kg) = 0.00171 x dhumucdiisuna x ballac x dhererka
Miisaanka tuubada naxaasta guduudan ee wareegsan (kg) = 0.028 x dhumucda derbiga x (dhexroorka dibadda - dhumucda gidaarka) x dhererka
Miisaanka tuubada naxaasta wareega ah (kg) = 0.0267 x dhumucda gidaarka x (dhexroorka dibadda - dhumucda gidaarka) x dhererka
Miisaanka tuubada aluminium wareega ah (kg) = 0.00879 x dhumucda gidaarka x (OD - dhumucda gidaarka) x dhererka
Fiiro gaar ah:Halbeegga dhererka qaacidadadu waa mitir, unugga bedkiisuna waa mitir labajibbaaran, cutubyada soo hadhayna waa millimitir.Miisaanka sare x cutubka qiimaha alaabtu waa qiimaha alaabta, oo lagu daray daawaynta dusha sare + kharashka saacadaha shaqada ee hawl kasta + alaabta baakadaha + kharashka dhoofinta + cashuurta + heerka dulsaarka = odhaah (FOB).
Cufis-jiidad gaar ah oo walxaha sida caadiga ah loo isticmaalo
Birta = 7.85 aluminium = 2.7 Copper = 8.95 birta aan daahin = 7.93
Qaaciddada xisaabinta fudud ee miisaanka birta aan fiicnayn
Miisaan fidsan oo bir ah halkii mitir laba jibaaran (kg) caanaha: 7.93 x dhumucdiisuna tahay (mm) x ballac (mm) x dhererka (m)
304, 321Birta aan Daxalka lahayn ee PipeUnugga AragtidaMiisaanka mitirkiiba (kg) caanaha: 0.02491 x dhumucda gidaarka (mm) x (dhexroorka ka baxsan - dhumucda gidaarka) (mm)
316L, 310SBirta aan Daxalka lahayn ee PipeUnugga AragtidaMiisaanka mitirkiiba (kg) caanaha: 0.02495 x dhumucda derbiga (mm) x (dhexroorka dibadda - dhumucda gidaarka) (mm)
Miisaanka birta wareegsan ee aan lahayn mitirkiiba (kg) caanaha: dhexroorka (mm) x dhexroorka (mm) x (nikkel aan lahayn: 0.00623; chromium ahama: 0.00609)
Xisaabinta miisaanka aragtida ee birta
Xisaabinta miisaanka aragtida ee birta waxa lagu cabbiraa kiiloogaraam (kg).Qaacideeda aasaasiga ah waa:
W (miisaanka, kg) = F (aagga isdhaafka ah mm²) x L (dhererka m) x ρ (cufnaanta g/cm³) x 1/1000
Noocyada kala duwan ee qaabka miisaanka aragtida birta waa sida soo socota:
Bir wareeg ah,Gariiradda (kg/m)
W=0.006165 xd xd
d = dhexroor mm
Dhexroor 100mm bir wareegsan, hel miisaanka halkii m.Miisaanka halkii m = 0.006165 x 100² = 61.65kg
Rebar (kg/m)
W=0.00617 xd xd
d = dhexroorka qaybta mm
Soo hel miisaanka halkii m ee rebar dhexroorkiisu yahay 12mm.Miisaanka halkii m = 0.00617 x 12² = 0.89kg
Bir labajibbaaran (kg/m)
W=0.00785 xa xa
a = balac dhinac mm
Soo hel miisaanka halkii m ee bir labajibbaaran oo ballac dhinaceedu yahay 20mm.Miisaanka halkii m = 0.00785 x 20² = 3.14kg
Bir fidsan (kg/m)
W=0.00785×b×d
b = balac dhinac mm
d= dhumuc mm
Bir fidsan oo ballac dhinaceedu yahay 40mm iyo dhumucdiisuna tahay 5mm, hel miisaanka halkii mitir.Miisaanka halkii m = 0.00785 × 40 × 5 = 1.57kg
Bir saddex geesood ah (kg/m)
W=0.006798×s×s
s= fogaan dhanka ka soo horjeeda mm
Soo hel miisaanka halkii m ee birta laba geesoodka ah oo masaafo dhan 50mm u jirta dhinaca ka soo horjeeda.Miisaanka halkii m = 0.006798 × 502 = 17kg
birta Octagonal (kg/m)
W=0.0065×s×s
s= fogaan dhinaca mm
Soo hel miisaanka halkii m ee birta octagonal ah oo u jirta 80mm dhinaca ka soo horjeeda.Miisaanka halkii m = 0.0065 × 802 = 41.62kg
Bir xagal siman (kg/m)
W = 0.00785 × [d (2b-d) + 0.215 (R²-2r²)]
b = balac dhinaceed
d = dhumucda gees
R = radius gudaha ah
r = radius of arc dhamaadka
Soo hel miisaanka halkii m ee 20 mm x 4 mm xagal siman.Laga soo bilaabo buug-gacmeedka birta, R ee xagal siman 4mm x 20mm waa 3.5 rkuna waa 1.2, dabadeed miisaanka m = 0.00785 x [4 x (2 x 20-4) + 0.215 x (3.52 - 2 x) 1.2²)] = 1.15kg
xagal aan sinnayn (kg/m)
W=0.00785×[d(B+bd) +0.215(R²-2r²)]
B=ballaca dhinaca dheer
b=ballac dhinaca gaaban
d=Duufaan dhinaca
R=radius gudaha ah
r=dhamaadka radius
Soo hel miisaanka halkii m ee 30 mm × 20 mm × 4 mm xagal aan sinnayn.Laga soo bilaabo buug-gacmeedka birta si loo helo 30 × 20 × 4 xaglaha aan sinnayn ee R waa 3.5, r waa 1.2, markaa miisaanka m = 0.00785 × [4 × (30 + 20 - 4) + 0.215 × (3.52 - 2 × 1.2 2) )] = 1.46kg
Birta kanaalka (kg/m)
W = 0.00785 × [hd + 2t (bd) + 0.349 (R²-r²)]
h=dherer
b=dhererka lugta
d= dhumucda dhexda
t=celcelis ahaan dhumucda lugaha
R=radius gudaha ah
r = radius of arc dhamaadka
Soo hel miisaanka halkii m ee birta kanaalka 80 mm × 43 mm × 5 mm.Laga soo bilaabo buug-gacmeedka birta, kanaalka wuxuu leeyahay 8, R ah 8 iyo r 4. Miisaanka m = 0.00785 × [80 × 5 + 2 × 8 × (43 - 5) + 0.349 × (82 - 4²)] = 8.04kg
I-beam (kg/m)
W=0.00785×[hd+2t(bd)+0.615(R²-r²)
h=dherer
b=dhererka lugta
d= dhumucda dhexda
t=celcelis ahaan dhumucda lugaha
r=radius gudaha ah
r=dhamaadka radius
Soo hel miisaanka halkii m ee isha I-beam ee 250 mm × 118 mm × 10 mm.Laga soo bilaabo buug-gacmeedka qalabka birta I-beam wuxuu leeyahay 13, R ah 10 iyo r 5. Miisaanka m = 0.00785 x [250 x 10 + 2 x 13 x (118 - 10) + 0.615 x (10² - 5²)] = 42.03kg
Saxan bir ah (kg/m²)
W=7.85×d
d= dhumucnaan
Soo hel miisaanka halkii m² ee saxan bir dhumucdiisuna tahay 4mm.Miisaanka halkii m² = 7.85 x 4 = 31.4kg
Dhuumaha birta ah (oo ay ku jiraan tuubo bir ah oo aan fiicneyn iyo welded) (kg/m)
W=0.0246615×S (DS)
D= dhexroor ka baxsan
S = dhumucda gidaarka
Soo hel miisaanka halkii m ee tuubo bir ah oo aan xidhnayn oo leh dhexroor ka baxsan 60mm iyo dhumucdiisuna tahay 4mm.Miisaanka halkii m = 0.0246615 × 4 × (60-4) = 5.52kg
Waqtiga boostada: Oct-08-2023