PERENCANAAN TIANG PANCANG DINDING PENAHAN TANAH (RETAINING WALL) BASEMENT PADA PROYEK APARTEMEN SUN CITY RESIDENCE SIDOARJO

Abstract

Apartment Suncity Residence Sidoarjo is an apartment that was set up right behind Mall Suncity Sidoarjo. The number of basement floors in the Suncity Residence Sidoarjo Apartment development project only consists of 1 floor. On the retaining wall, the type of foundation used is a borepile foundation with Ø 60 cm and a length of 38 m. So the purpose of writing this thesis is to provide an alternative foundation structure planning using a concrete pile foundation with a length of 35 m, 38 m, and 40 m with Ø 30, 40 and 50 cm. The method of implementation erection is by using a Hydraulic Static Pile Driver. The data needed are work drawings, soil data, and Surabaya City HSPK 2019. For the calculation of the carrying capacity of the foundation using the N-SPT method and structural calculations assisted by the RSAP program. From the analysis results obtained (1) load for type A = 17,966.79 kg and for type B = 21,962.32 kg. (2) the supporting capacity of the pile obtained alternative 2 with Qtiang Ø 50 = 27,918 kg (3) the number of piles type A is 2 piles and type B is 3 piles type B = 13.36 cm (5) this foundation work uses a fee of Rp. 2,591,177,369, - with a price ratio of 17.99% smaller than the existing foundation.