Unit price analysis of pile foundation excavation
According to the pile foundation with a diameter of 2m and a pile depth of 10m, a special blasting company is responsible for blasting the excavated pile.
1. Cost of concrete retaining wall: retaining wall thickness 15cm, volume per meter 1.0 1m3, C30 grade of concrete, unit price of 230 yuan /M3, and cost of 232.3 yuan; Eight longitudinal secondary 12 threaded steel bars are used for reinforcement, and the spiral steel bar is φ 10 every 30cm. Reinforcement needs:
8 *10 * 0.888+34 * 0.617 * 3.14 *1.08 * 2 = 213.09 kg, which is equivalent to 2/kloc per meter of reinforcement material.
2. Labor cost for digging hole: the pile length is 10m, the upper part is 3.5m clay layer, the middle part is 1.5m gravel layer, and the lower part is 5m secondary rock. Each side of clay needs 1.2 man-days, each side of gravel needs 1.46 man-days, and each side of secondary rock needs 2.6 1 man-days. The labor cost required for digging holes is:
(3.5 * 3. 14 * 1.2 * 80+ 1.5 * 3. 14 * 1.46 * 80+5 * 3. 14 * 2.6 1 * 88
3. Cost of mechanical equipment: Mechanical equipment includes single-cylinder slow hoist, air compressor and small machines and tools within 50KN. Each cubic meter needs 0.83 machine shifts of single drum winch, 0. 138 machine shifts of air compressor, and 4 yuan for small machines and tools. The cost is calculated as follows:
0.83 *100+0.138 *160 * 0.7+4 =102.5 yuan.
The unit price per meter for 2m diameter pile foundation is: 309+63.6+488.33+102.5 * 3.14 =1182.8 yuan/meter.
The converted unit price of each concrete is:1182.8/3.1415 = 376 yuan/m.
1.2m diameter pile foundation unit price per meter is: 376* 1. 13=424.9 yuan/meter.
1.8m diameter pile foundation unit price per meter: 376*2.54=955.04 yuan/meter.
The above is the price introduction of manual digging piles provided by Zhong Da Consulting for builders. For more information about architectural terminology, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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