Yogyakarta City, as a capital city that is known as “student city” and “tourism city”,
attracts many people from many regions to study or live in Yogyakarta. It makes the city to
become more crowded in small area. Besides that, as a city that is located in Ring of Fire,
Yogyakarta is very potential to earthquake damage. Therefore, the building is expected to have
resistance for earthquake and have long live period. In small area, an alternative beside housing
area is flat because it can accommodate more people in smaller area. However, the taller the
building, the more it’s vulnerable to earthquake. Therefore, the flat must be designed
earthquake resistance by using reinforced concrete of Special Moment Resisting Frame System
(Sistem Rangka Pemikul Momen Khusus)
The building will have size of 28 x 96 m2 and 5 level story. It is located in Ki Ageng
Pamanahan Street, Yogyakarta City, Special Region of Yogyakarta. The total site area is 8,350
m2. Each story has typical 4 meters height. The building uses sustainable approach by using
green material for green roof and fasad for the architectural side. The size of the building is
considerably large and it serve as residential area, so the load is a great deal.
The references that will be used for the earthquake resistance building are SNI 1726-
2019 Tata Cara Perencanaan Ketahanan Gempa Struktur Bangunan Gedung dan Non
Gedung, SNI 2847-2019 Persyaratan Beton Struktural untuk Bangunan Gedung, SNI 1729-
2015 Spesifikasi untuk Bangunan Gedung Baja Struktural, and SNI 1727-2020 Beban Desain
Minimum dan Kriteria Terkait untuk Bangunan
The design will begin from interpreting soil data from test, determining site class,
determining the structure system, and calculate the response spectrum curve for dynamic load
analysis of earthquake. The design continues to super structure for purlin, truss, slab, beam,
column, beam-column joint, tie beam, and stair. Then, for the substructure it encompasses
liquefaction analysis, foundation type analysis, foundation bearing capacity, foundation design
for reinforced concrete structure, and settlement analysis. The output of the design is
construction drawing, where this drawing will be used for cost and time management work.
The work includes making work breakdown structure, quantity take-off, and unit price cost
analysis. Then, by the help of Microsoft Project, the analysis for workers and resources can be
done. It includes to maximize the workers and resources to have cheapest cost and shortest
duration of work. At the end, the work is presented in S-Curve.
The design result in this project for super structure are Purlin C125x50x20x2, Truss
2L90x90x7, 2 bolt connection D16 mm, sag rod D10 mm, and anchor D18mm L150 mm. For
slab will use 8 types of two way that has thickness of 1.5 cm, the beam size is 50 x 50 cm, the
column size is 65 x 65 cm, the stairs thickness is 100 cm, and the landing slab thickness is 3
cm. The substructure uses bore pile foundation with depth of 16 m and 4 types. The pile cap
thickness is 1 meter.
The cost and time analysis shows that the building construction will take 1080 days and
cost of Rp41,224,131,730.39