In earthquake prone area buildings have to be designed according to the
criteria specified in earthquake loading code. This final project will consider
“Asuransi Astra” building which is located at kav 15 Tb. Simatupang street,
Cilandak Barat, Jakarta. This building will be designed based on SNI 03 2847 -
2002, SNI 03 1729 - 2002 and SNI 03 - 1726 - 2002. The building will be
considered as dual system.
In analyzing “Asuransi Astra” ETABS non linear was used to obtain
internal forces of the structure. For columns and structural walls design the
PCACOL version 2.30 was used in order to obtain the longitudinal reinforcement.
For irregular building the effect of earthquake should be computed based on
dynamic analysis where V
dynamic
> 0.8 V
to satisfy SNI 03 - 1726 – 2002.
From building simulation, the first mode and the second mode of seismic
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response were dominant in translation so its satisfy the requirement of SNI 03 –
1726 – 2002 section 7.1. From analysis was found that the service story drift Δ
=
6.4 mm < Δ
s
drift required = 14.12 mm, ultimate story drift Δ
drift = 38.08 mm <
Δ
m
m
drift required = 80 mm, so that both service story drift and ultimate story drift
have satisfy SNI 03 - 1726 – 2002. For designing truss, the author use WF 300 x
150 for beam and H 300 x 300 for column. The entire slab has the thickness 120
mm and designed as two way slab with reinforcement bar P10 mm. Except for
skew pararellogram, it will use D13. Stair has the thickness 120 mm, with
reinforcement bar D13 mm. Dimension of concrete beam is 800 mm x 400 mm,
longitudinal reinforcement for support area are 5D25 (top reinforcement), 3D25
(bottom reinforcement), longitudinal reinforcement for midspan area are 2D25
(top reinforcement), 3D25 (bottom reinforcement). Size of square column is 1000
mm x 1000 mm, longitudinal reinforcement has 24D25, and transversal
reinforcement has 4D16.