kehilangan tegangan akibat relaksasi fst’ (30) / fy = 1159 / (0,85 x 1862 ) = 0,732
DESCRIPTION
Kehilangan Tegangan akibat Relaksasi fst’ (30) / fy = 1159 / (0,85 x 1862 ) = 0,732 RET = { 1159 x ( log 26280 - log 720 ) / 10 } x (0,732 - 0,55 ) = 33 Mpa Kehilangan Tegangan akibat Rangkak: CR = ( UCR ) (SCF ) (PCR ) x fc - PowerPoint PPT PresentationTRANSCRIPT
Kehilangan Tegangan akibat Relaksasi
fst’ (30) / fy = 1159 / (0,85 x 1862 ) = 0,732
RET = { 1159 x ( log 26280 - log 720 ) / 10 } x (0,732 - 0,55 )
= 33 Mpa
Kehilangan Tegangan akibat Rangkak:
CR = ( UCR ) (SCF ) (PCR ) x fc
UCR = ( 95 - 20 x E c ksi )=(95 - 20 x 4,415 ) = 6,7 < 11 dipakai 11
SCF = 0,87 ; V / S = 3 , SCF = 0.87--------- Tabel 3
PCR = 0.65 ; 30 hari--1095 hari PCR = ( AUC ) t - ( AUC ) ti
= 1 - 0,35 = 0.65 ------------Tabel 5
fc’ tepat pd tendon ?
fst (30) sesudah kehilangan Relaksasi =1111 - 33 = 1078 Mpa
F = 1078 x 1975 = 2129050 N = 2129 KN
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