泥浆护壁钻孔桩桩径允许偏差为_______,人工挖孔桩桩径允许偏差为。_______

泥浆护壁钻孔桩桩径允许偏差为_______,人工挖孔桩桩径允许偏差为。_______
【正确答案】:±50mm;+50mm