Soal Baja

batapPERHITUNGAN ATAP :( ATAP BANGUNAN MULTIPURPOSE)Kuda - kuda atap : WF Cas 600 x 200 x 8 x 13Kuda - kuda atap : WF 250 x 125 x 6 x 9Pembebanan :Pembebanan :Beban pada atap Q = :57kg/m2Beban pada atap Q = :57kg/m2Jarak Kuda - kuda =2.5mJarak Gording =1.5mJarak Kuda - kuda =2mJarak Kuda - kuda =2.5mBeban pada Kuda - kuda WF :Beban pada Kuda - kuda WF :Beban terbagi rata q = Q x L = 57 x 2,5Beban terbagi rata q = Q x L = 57 x 1,5q =142.5kg/m'q =85.5kg/m'Beban terpusat P1 = (57 x 2,5) x (4 + 3,25)Beban terpusat P1 = (57 x 2,5) x (4 + 3,25)P1 =1033.125kgP1 =1033.125kgBeban terpusat P2 = (57 x 2,0) x (3,25 + 2,75)P2 =684kgKuda - kuda atap : WF 200 x 100 x 5,5 x 7Kuda - kuda atap : WF 350 x 175 x 7 x 11Pembebanan :Pembebanan :Beban pada atap Q = :57kg/m2Beban pada atap Q = :57kg/m2Jarak Kuda - kuda =2.5mJarak Kuda - kuda =3.3mBeban pada Kuda - kuda WF :Beban pada Kuda - kuda WF :Beban terbagi rata q = Q x L = 57 x 2,5Beban terbagi rata q = Q x L = 57 x 3,3q =142.5kg/m'q =188.1kg/m'

IKATAN ANGINPERHITUNGAN IKATAN ANGIN ATAPb=arc tan (5.75/6)=43.760PEMBEBANANA.Beban Tetap(N)=N/cos b=1175.46/cos43.76=1628.09kgB.Beban Sementara(N)=N/cos b=1944.60/cos43.76=2693.39kgPERHITUNGAN BATANG TARIKf>L/500=600/cos43.76/500=1.6620770139cmA.Beban TetapA = N/s =1628.09/1600=1.02cm^2d = (4*A/3.14)^0.5=1.14cmB.Beban SementaraA = N/s =2693.39/2080=1.29cm^2d = (4*A/3.14)^0.5=1.28cmJadi dipakai besi beton f16mmKONTROL TERHADAP SYARAT PPBBI (pasal 7.4.2)h/L >= (0.25*Q/(E*Atepi))^0.5h=6mL=(40+2*1.5)/cos15=44.5181329701mQ=n*q*L*dk=2*30.33*44.5181329701*6=16200.3111477561kgAtepi=b * ts=125*9=1125mm^2=11.25cm^26/44.5181329701>=(0.25*16200.3111477561/(2.1*10^6*11.25))^0.50.13>=0.01....OK

GORDINGPERHITUNGAN GORDINGDATA :GORDING : CNP125.50.20.2,3KEMIRINGAN ATAP(a)=150h=125mmts=2.3mmJARAK GORDING(Lg)=1.5mb=50mmtb=2.3mmJARAK SAGROD(Ls)=2mA=5.747cm^2ix=4.88cmJARAK KAP(L)=6mW=4.51kg/miy=1.89cmBERAT ATAP=7kg/m^2Ix=137cm^4Wx=21.9cm^3LEBAR BENTANG=40mIy=20.6cm^4Wy=6.22cm^3JARAK GRID VERTIKAL PERTAMA (KANOPI)(L1)=1.5mJARAK VERTIKAL KEDUA(L2)=5.75mJARAK ANTAR GRID VERTIKAL(L3)=5.75mJUMLAH GORDING PADA L1=2buahJUMLAH GODING PADA L2=5buahJUMLAH GORDING PADA L3=5buahTINGGI KOLOM(hk)=6mPEMBEBANAN :A.Beban Mati :-Beban Atap=7*1.5=10.5kg/m-Berat Sendiri Gording==4.51kg/m-Berat Alat Penyambung=0.1*(10.5+4.51)=1.50kg/m+Qm=16.51kg/mB.Beban Hidup-Beban Air Hujan (Qh)=40-0.8*a=28kg/m^2..harusw =2.34s =1483.0187891566kg/cm2