TUGAS 1

SI – 3121 Struktur Beton

Dosen : Prof.Bambang Budiono,Ir, M.E.,Ph.D

Disusun oleh :

Nama : Windya Wijaya

Nim : 15013024

Program Studi Teknik Sipil

Fakultas Teknik Sipil dan Lingkungan

Institut Teknologi Bandung

2015

Windya Wijaya15013024

1.

A s=8×509mm2=4072mm2

A s×f y=0.85×f c'×a×b

A s×f y=0.85×f c'×β1×c×b

4072×400=0.85×27.5×0.85×c×300

c=273.26mm

ε y=f yE s

= 400200,000

=0.002

ε s=d−cc×ε c=

452.5−273.26273.26

×0.003=1.97×10−3<ε y

2.

1

Windya Wijaya15013024

A s=3×509mm2=1527mm2

A s×f y=0.85×f c'×a×b

A s×f y=0.85×f c'×β1×c×b

1527×400=0.85×27.5×0.85×c×300

c=102.47mm

ε y=f yE s

= 400200,000

=0.002

ε s=d−cc×ε c=

452.5−102.47102.47

×0.003=1.02×10−2>ε y

3.

A s=6×509mm2=3054mm2

A s×f y=0.85×f c'×a×b

A s×f y=0.85×f c'×β1×c×b

3054×400=0.85×27.5×0.85×c×300

c=204.94mm

ε y=f yE s

= 400200,000

=0.002

ε s=d−cc×ε c=

452.5−204.94204.94

×0.003=3.62×10−3>ε y

2