4.3.10 Perhitungan Momen Tahanan Balok Memanjang Lantai 2 9,3 m 4.3.10.1 Tumpuan
Mu = -379,2622 KNm
As = 4 D 22 = 4 x 3,14 x 11
2
= 1519,76 mm
2
As’ = 3 D 22 = 3 x 3,14 x 11
2
= 1139,82 mm
2
b = 400 mm
h = 900 mm
d’ = 50 mm
d = h – d’ = 900 mm – 50 mm = 850 mm
fc’ = 9,424 Nmm
2
fy
s
= 339,44 Nmm
2
� =
�� �.�
=
1519,76 mm
2
400 mm x 850 mm
=
0,0044699 �′ =
��′ �.�
=
1139,82 mm
2
400 mm x 850 mm
=
0,0033524
� �
=
��−�
′
�.��
�
0,85.�1.��′
=
0,0044699
−
0,0033524
� 339,44 Nmm
2
0,85 � 0,85 �
9,424
Nmm
2
� �
=
0,055711
�� ∅.�.�
2
=
�
′
. ��
�
.
ρ �
′
− 1. 1 - 0,425.
� �
+ 1 –
�′ �
�� = {�
′
. ��
�
.
ρ �
′
− 1. 1 - 0,425.
� �
+ 1 –
�′ �
} . ∅. �. �
2
Mr = {0,0033524
� 339,44 Nmm
2
x
0,0044699 0,0033524
− 1
x
1 - 0,425 x 0,055711 + 1 –
50 mm 850 mm
}
x 0,8 x 400 mm x 850 mm
2
Mr = 303,2233 KNm
4.3.10.2 Lapangan
Mu = 206,1728 KNm
As = 4 D 22 = 4 x 3,14 x 11
2
= 1519,76 mm
2
As’ = 3 D 22 = 3 x 3,14 x 11
2
= 1139,82 mm
2
b = 400 mm
h = 900 mm
d’ = 50 mm
d = h – d’ = 900 mm – 50 mm = 850 mm
fc’ = 9,424 Nmm
2
fy
s
= 339,44 Nmm
2
� =
�� �.�
=
1519,76 mm
2
400 mm x 850 mm
=
0,0044699 �′ =
��′ �.�
=
1139,82 mm
2
400 mm x 850 mm
=
0,0033524
�� ∅.�.�
2
=
∅. � . ��
�
. 1 - 0,588. � .
��
�
��′
�� = {∅. � . ��
�
. 1 - 0,588. � .
��
�
��′
} . ∅. �. �
2
Mr = {0,8 x 0,0044699 x 339,44 Nmm
2
x 1 – 0,588 x 0,0044699 x
339,44 Nmm
2
9,424
Nmm
2
} x 0,8 x 400 mm x 850 mm
2
Mr = 254,0659 KNm
4.3.11 Perhitungan Momen Tahanan Balok Melintang Lantai 2 7,3 m 4.3.11.1 Tumpuan
Mu = -379,2622KNm
As = 3 D 22 = 3 x 3,14 x 11
2
= 1139,82 mm
2
As’ = 2 D 22 = 2 x 3,14 x 11
2
= 759,88 mm
2
b = 400 mm
h = 900 mm
d’ = 50 mm
d = h – d’ = 900 mm – 50 mm = 850 mm
fc’ = 9,424 Nmm
2
fy
s
= 339,44 Nmm
2
� =
�� �.�
=
1139,82 mm
2
400 mm x 850 mm
=
0,00335242 �′ =
��′ �.�
=
759,88 mm
2
400 mm x 850 mm
=
0,00223494
� �
=
��−�
′
�.��
�
0,85.�1.��′
=
0,00335242
−
0,00223494
� 339,44 Nmm
2
0,85 � 0,85 �
9,424
Nmm
2
� �
=
0,0557096
�� ∅.�.�
2
=
�
′
. ��
�
.
ρ �
′
− 1. 1 - 0,425.
� �
+ 1 –
�′ �
�� = {�
′
. ��
�
.
ρ �
′
− 1. 1 - 0,425.
� �
+ 1 –
�′ �
} . ∅. �. �
2
Mr = {0,00223494
� 339,44 Nmm
2
x
0,00335242 0,00223494
− 1
x
1 - 0,425 x 0,0557096 + 1 –
50 mm 850 mm
}
x 0,8 x 400 mm x 850 mm
2
Mr = 303,2218 KNm
4.3.11.2 Lapangan
Mu = 206,1728 KNm
As = 3 D 22 = 3 x 3,14 x 11
2
= 1139,82 mm
2
As’ = 2 D 22 = 2 x 3,14 x 11
2
= 759,88 mm
2
b = 400 mm
h = 900 mm
d’ = 50 mm
d = h – d’ = 900 mm – 50 mm = 850 mm
fc’ = 9,424 Nmm
2
fy
s
= 339,44 Nmm
2
� =
�� �.�
=
1139,82 mm
2
400 mm x 850 mm
=
0,00335242 �′ =
��′ �.�
=
759,88 mm
2
400 mm x 850 mm
=
0,00223494
�� ∅.�.�
2
=
∅. � . ��
�
. 1 - 0,588. � .
��
�
��′
�� = {∅. � . ��
�
. 1 - 0,588. � .
��
�
��′
} . ∅. �. �
2
Mr = {0,8 x 0,00335242 x 339,44 Nmm
2
x 1 – 0,588 x 0,00335242 x
339,44 Nmm
2
9,424
Nmm
2
} x 0,8 x 400 mm x 850 mm
2
Mr = 195,5305 KNm
4.3.12 Perhitungan Gaya Geser Tahanan Balok Utama Lantai 2 90x40 cm