STUDI ALTERNATIF SOLUSI MASALAH RETAKAN LANTAI BANGUNAN DI ATAS TANAH LEMPUNG EKPANSIF
ABTRACT: Floor Cracks often
occur on a building above ekpansif soil caused by swelling in the rainy season
and the shrinkage in the dry season. This study is testing in full scale of
four alternative solutions used to overcome the floor cracks; 1) replace the
layer of ekpansif with non ekpansif
soil, 2) floor reinforced concrete 3) adding of a layer of sand 10 cm thickness at 1,0 m depth below the floor and 4) lime
stabilisation of ekpansif soil under the floor. Cracks during the first wet-dry
cycles was observed to measure the degree of damage. Budget analysis was conducted to determine
the cost of each alternative solution. Drilling and laboratory testing performed to identify ekpansif soil.
Based on drilling and laboratory testing known ekpansif soil with high
potential swelling are found from the surface to a depth of 2.1 m. Results of
the bugged analysis showed that cost per m2 of floor without improvement, alternative
solutions 1, 2, 3 and 4 is Rp. 46,300, - (forty-six thousand three hundred
rupiah), Rp. 188 700, - (one hundred and eighty-eight thousand seven hundred
rupian), Rp. 58.000, - (fifty eight thousand rupiah), Rp. 103,300, - (one
hundred and three thousand three hundred rupiah) and Rp. 76 400, - (seventy six
thousand four hundred rupiah). Alternative 2 have a best performance.
Penulis: Teguh Widodo
Kode Jurnal: jptmesindd150141
