ALAT BANTU BELAJAR DAN BEKERJA RANGKA ATAP BAJARENCANA GORDINGPembebanan Tetap. Mx maks = Mxq + Mxp = 21218.5 kg.cm' My maks = Myq + Myp = 1900.5 kg.cm' Pembebanan Sementara. Mx maks = Mxq + Mxp + Mxwd = 21468.3 kg.cm' (a) My maks = Myq + Myp + Mywd = 1900.5 kg.cm' Atau Mx maks = Mxq + Mxp + Mxwp = 16223.8 kg.cm' (b) My maks = Myq + Myp + Mywp = 1900.5 kg.cm' Tahanan Momen Perlu,Tahanan momen wxPemb. Tetap P. Sement. (a) P. Sement. (b)

menentukan

cm 26.0

3

cm 20.1

3

cm3 17.3

Dimensi Profil Gording (dari tabel) Profil wx wy Ix cm3 cm3 cm4INP 10 C834.2 26.5 4.9 6.4 171.0 106.0

Iy cm412.2 19.4

Beratkg/m'8.3 8.6

(Sel berwarna kuning tempat mengisi data)

Kontrol Tegangan. Beban mati (DL Q) baru, Q Q Momen. 1). DL Q

= =

23.05 kg/m' (Pen. atap + 23.37 kg/m' (Pen. atap +

INP 10 ) C8 )

2). LL P 3). LL Wd 4). LL Wp

Mxq = 1/8 . Q Cos a . B2 Myq = 1/8 . Q Sin a . (B/3)2 Mxq = 1/8 . Q Cos a . B2 Myq = 1/8 . Q Sin a . (B/3)2 Mxp = 1/4 P Sin a . B Myp = 1/4 P Cos a . (B/3) Mxwd = 1/8 . Wd . B2 Mywd = 0 Wdy = 0 Mxwp = 1/8 . Wp . B2 Mywp = 0 Wpy = 0

= = = = = = = =

6724.7 286.8 6818.1 290.8 11669.8 1493.2 249.7

kg.cm' kg.cm' kg.cm' kg.cm' kg.cm' kg.cm' kg.cm'

INP 10 C8

-4994.7 kg.cm'

Pembebanan Tetap, Mx maks = Mxq + Mxp = My maks = Myq + Myp = Pembebanan Sementara, Mx maks = Mxq + Mxp + Mxwd = My maks = Myq + Myp + Mywd = Tegangan Yang Terjadi. Pembebanan Tetap, Mx maks wx My maks wy My maks wy

INP 10 18394.5 kg.cm' 1780.0 kg.cm' INP 10 18644.2 kg.cm' 1780.0 kg.cm'

C8 18487.8 kg.cm' 1784.0 kg.cm' C8 18737.5 kg.cm' 1784.0 kg.cm'

INP 10

C8 OK 978.2 kg/cm2 OK