CONCRETE SLABS STRUCTURE BEHAVIOR WITH VARIATIONS BAMBOO DISTANCE USING FOR IRRIGATION WATERGATE

Concrete building construction in the future is not only sturdy, durable but also inexpensive and environmentally friendly. One of the cheap and environmentally friendly innovations is making irrigation floodgates from reinforced concrete slabs with bamboo reinforcement. In this study, irrigation flood gates were made with a size of 400 m x 500 mm x 30 mm, bamboo reinforcement measuring 10 mm x 10 mm which was varied using reinforcement distances of 4.5 cm, 5 cm, 6 cm and 8 cm. Each variation was made 3 samples so that the total tested was 12 samples. The slabs is then flexibly tested with line loads and the test results with 4 variations are then compared to the variation of the distance and the percentage of the remaining strength of the concrete slabs against the hydrostatic load of water. From the results of tests in the laboratory obtained a maximum load of the four types of slabs is 1058 kg and a minimum of 256 kg. The maximum deflection is 27 mm while the minimum is 8.6 mm. Flexural strength tends to decrease when the reinforcement area ratio increases up to 0.36 and at the ratio of bamboo reinforcement area around 0.37, the flexural strength of the slabs reaches the lowest limit up to 230 kg. The debris produced by the four panel variations is a type of bending collapse. All flood gates with varying distances are able to withstand the hydrostatic load of water with a safety factor between 3.49 - 14.42.