PERENCANAAN PONDASI BORE PILE PADA PEMBANGUNAN MASJID ISLAMIC CENTER KOTA SURABAYA

Islamic Center Mosque in Suarabaya has a strategic location because it is located in the middle of the city and densely populated. For this reason, in its construction, it is necessary to consider its planning because of limited mobility space and consider the densely populated project location. The Islamic Center was built using a pile foundation with a diameter of 120 cm and a depth of 32 m at drill point B1, the SPT value obtained during soil testing of 50 shows that the soil at that depth has reached a medium soil layer that is stable enough for foundation planning. In this planning using a bore pile foundation with a foundation diameter of 40cm and 60cm with a depth of 30.1m, from the planning of pile cap and pile dimensions, several types of piles were obtained, namely type 1 pile cap found on the square-shaped DE-0 grid with 1.8 m x 1.8 m x 0.7 m D22-100 mm reinforcement was used, while for reinforcement for D19-150 mm, for the repetition of bore poles dimensions of 40 cm using 16D13 mm with spiral reinforcement D8-30 mm, pile cap type 2 is found on the grid B-4 in the form of a square with 1.8 m x 1.8 m x 0.7 m used reinforcement D22-250 mm, while for reinforcement for D19-150 mm, for repetition of bore poles dimensions of 40 cm using 16D13 mm with spiral reinforcement D8-30 mm, type 3 pile cap is located on a square-shaped A-7 grid with 1.8 m x 3.6 m x 0.7 m D22-250 mm reinforcement is used, while for reinforcement for D19-150 mm, for repetition of bore poles dimensions of 40 cm using 16D13 mm with spiral reinforcement D8-30 mm, type 4 pile cap is located on a square-shaped E-7 grid with 1.8 m x 5.4 m x 0.7 m D22-250 mm reinforcement is used, while for reinforcement for D19-150 mm, for repetition of bore poles dimensions of 60 cm using 16D13 mm with spiral reinforcement D8-30 mm, pile cap type 5 is located on a rectangular D-7 grid with 1.8 m x 5.4 m x 0.7 m D22-250 mm reinforcement is used, while for reinforcement for D19-150 mm, for repetition of bore poles dimensions of 40 cm using 16D13 mm with spiral reinforcement D8-30 mm, The type 6 pile cap is located on the rectangular C-7 grid with 1.8 m x 5.4 m x 0.7 m D22-250 mm reinforcement, while for D19-150 mm reinforcement, for repetition of bore poles the dimensions of 40 cm use 16D13 mm with D8-30 mm spiral reinforcement. From the calculation of immediate settlement and consolidation settlement, the largest result lies in the C-7 grid column with a value of 1.47 cm.