3.penulangan pelat lantai
DESCRIPTION
betonTRANSCRIPT
F. PENULANGAN PLAT TYPE A (4 X 4.5 M)(Perhitungan mewakili pelat type yang lain)
Data gambar
terlampir
Data - data
tebal plat 0.12 m
tebal spesi 2 cm
tebal tegel 2 cm
beban plafond 18 kg/m2 beban guna
Beban mati
pelat = 0.12 x 2400 = 288 kg/m2
spesi = 2 x 21 = 42
keramik = 2 x 24 = 48
plafond = 18
DD = 396 kg/m2
Beban hidup
air hujan = 0
guna = 250
DL 250 kg/m2
Beban berfaktor
D = 1,2 x 396 + 1,6 x 250 = 875.2 kg/m2
Statikaq 875.2 kg/m2
lx 4.00 m
ly 4.50 m
ly/lx 1.13
Jepit penuh/elastis {1/2] 1
25.00
21.00
59.00
54.00
Mlx = 0,001x 875.2 x 4.00^2 x 25 = 350.08 kgm
Mly = 0,001x 875.2 x 4.00^2 x 21 = 294.07 kgm
Mtx = 0,001x 875.2 x 4.00^2 x 59 = 826.19 kgm
Mty = 0,001x 875.2 x 4.00^2 x 54 = 756.17 kgm
Penulangan
wlx (tabel setelah interpolasi)
wly (tabel setelah interpolasi)
wtx (tabel setelah interpolasi)
wty (tabel setelah interpolasi)
Data-data
fc' (beton) 18.5 Mpa
fy' (baja) 240 Mpa
25 mm (dlm ruang)
pmin = (fc^0.5)/4fy = 0.0045
pmaks = = 0.0298
Lapangan x
Mu = 350.08 *9.8/1000kgm = 3.43 kNm
d = 120 - 25 = 95 mm
Mu = 3.43 = 380.1423
1 x 0.095^2
p = = 0.0020 <
<
ppakai = 0.0045
As = 0.0045 x 1000 x 95 = 425.64 mm2
Tumpuan x
Mu = 826.1888 *9.8/1000kgm = 8.10 kNm
d = 120 - 25 = 95 mm
Mu = 8.10 = 897.1358
1 x 0.095^2
p = = 0.0048 >
<
ppakai = 0.0048
As = 0.0048 x 1000 x 95 = 454.64 mm2
As' = 0,002 x 1000 x 120 = 240 mm2
Lapangan y
Mu = 294.0672 *9.8/1000kgm = 2.88 kNm
d = 120 - 25 = 95 mm
Mu = 2.88 = 319.3195
1 x 0.095^2
p = = 0.0017 <
<
ppakai = 0.0045
As = 0.0045 x 1000 x 95 = 425.64 mm2
Tumpuan y
d' (1)
bd2
bd2
bd2
600
6001.'85,075,0
fyfy
cf
Mu = 756.1728 *9.8/1000kgm = 7.41 kNm
d = 120 - 25 = 95 mm
Mu = 7.41 = 821.1073
1 x 0.095^2
p = = 0.0044 <
<
ppakai = 0.0045
As = 0.0045 x 1000 x 95 = 425.64 mm2
As' = 0,002 x 1000 x 120 = 240 mm2
Rekapitulasi besi 10 polosmm2 mm
425.64 ( 524 mm2 )
454.64 ( 524 mm2 )
Tumpuan X (tul bagi) 240 ( 335 mm2 )
425.64 ( 524 mm2 )
425.64 ( 524 mm2 )
Tumpuan Y (tul bagi) 240 ( 335 mm2 )
bd2
Lapangan X (tul atas) - 150
Tumpuan X (tul atas) - 150
- 150
Lapangan Y (tul atas) - 150
Tumpuan Y (tul atas) - 150
- 150
250 kg/m2
h 120 mm
b 1000 mm
0.0045
0.0298
0.0045
0.0298
0.0045
0.0298
0.0045
0.0298
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