DESIGN OF SIMPLE FLATS WITH SUSTAINABLE ARCHITECTURE APPROACH IN YOGYAKARTA CITY FROM STRUCTURAL, GEOTECHNICAL, AND COST AND TIME MANAGEMENT ASPECTS

Pinayungan, Bernardinus Sandiko and Syahdaputra, Muhammad Reza Ramadhani (2023) DESIGN OF SIMPLE FLATS WITH SUSTAINABLE ARCHITECTURE APPROACH IN YOGYAKARTA CITY FROM STRUCTURAL, GEOTECHNICAL, AND COST AND TIME MANAGEMENT ASPECTS. S1 thesis, Universitas Atma Jaya Yogyakarta.

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Abstract

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

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