Prof. Ir. R.M. Sedyatmo. He was born in Karanganyar, Central Java in 1909 he was an Indonesian engineer. Ir. Sedyatmo is often nicknamed "The Kancil" because he is famous for his many ingenuity studies at the Technische Hogeschool (THS) (now ITB) Bandung.
After leaving THS in 1934, Sedyatmo worked as a planning engineer for various government agencies. Sedyatmo is known as the inventor of the "Chicken Claw Foundation" in 1962. Sedyatmo's invention was initially used in the construction of the Juanda Naval Airport Apron, Surabaya, Polonia Airport Runway, Medan, and Soekarno-Hatta Airport Runway, Jakarta. The results of these findings have been patented and used abroad.
The chicken claw foundation consists of a reinforced concrete slab with a thickness of 10-15 cm, depending on the type of construction and the condition of the soil beneath it. Under the concrete slab, pipe pits are made with an axis spacing of 2-3 m. The diameter of the pipe is 1.20 m, the thickness is 8 cm, and the length depends on the load on the plate and the soil conditions. Single reinforcement is used for pipes, while double reinforcement is used for plates.
The chicken claw foundation system is very simple, so it is very suitable to be applied in areas where modern equipment and skilled workers are hard to come by. To some extent, this system can replace pile foundations. For a 3-4 story building, for example, the chicken claw system will cost the same as a 12-meter pile foundation.
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| Chicken Claw Foundation |
However, Sedyatmo was not a scientist who was hungry for awards. His humble attitude and high dedication to the nation are the spirits of his creations. And uniquely, Sedyatmo always emphasizes the importance of intuition and observation of the universe. His chicken claw work is a testament to how his creations were inspired by the roots of the coconut tree.
Some of Sedyatmo's other well-known works are the hydraulic pump, the Jatiluhur dam, and even the Suramadu bridge built based on Sedyatmo's initial concept. Not surprisingly, his extraordinary contribution to engineering knowledge won Sedyatmo a number of international awards.
Name Ir. Sedyatmo was later immortalized as the name of the freeway (Toll Road) from Jakarta to Soekarno-Hatta airport. Professor Sedyatmo died at the age of 75 in 1984 and was buried in Karanganyar. The Indonesian government awarded Sedyatmo the Class I Mahaputra Star for his services.
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