Turquoise: Grade V rock in Platts classification table. Secondary rocks: class ⅵ, ⅶ and ⅷ rocks in Platts classification table. Pujianshi: Class ⅸ and ⅹ rocks in Platts classification table. Ultra-hard rocks: ⅸ ~ ⅹ rocks in Platts classification table. Work contents of ditch P22 with quota number YT 1.46 ~ YT 1.49: Stone cutting, crushing, trimming, bottom inspection, and the stone is transported out of the ditch edge1m. Definition of using groove: refers to the part whose bottom width is less than 7m below the design line 0-0. The quantity of work shall be calculated in cubic meters after the design size is increased and the overbreak is allowed. The allowable thickness of overbreak is 1, and it is stipulated that the rock of class 5 and 6 is 20cm, and the rock of class 7 and 8 is 15cm. Trench gouging is divided into sub-items according to rock types, and the corresponding quota is adopted according to the relevant geological drilling report in the design documents. Artificial stone removal refers to the removal of rocks on the spreading surface of artificial flat foundation or excavation, and it is calculated as 50m3 per1100m2. For the definitions of turquoise, secondary hard rock, ordinary hard rock and special hard rock, please refer to the definitions in quota number YT1⑶ 8 ~ YT1⑶1. P23 of foundation pit with quota number YT1(5) 0 ~ YT1(5) 3 Work contents: cutting stone, crushing, repairing the bottom of border inspection, and transporting the stone out of the groove edge1m. Definition of excavation with foundation pit: The upper mouth area is less than 20m2 below the design line 00, and the calculation method of its engineering quantity is the same as that of the pipe trench. Also increase the allowable overbreak thickness. When the upper mouth area of the foundation pit is greater than 20m2, the trench excavation quota shall be completed within 7m of the trench bottom width. When the bottom width is more than 7m, the excavation quota shall meet 1. This quota does not include the transportation work after rock excavation and blasting, and its quantities should be calculated according to the construction organization design. For the definitions of turquoise, secondary hard rock, hard rock and special hard rock, please refer to the definitions in the quota number YT1⑶ 8 ~ YT1⑶ 41. Quota number YT 1 [5] 4 ~ YT 1 [5] 7 Slope dressing P24 Work contents: Slope dressing and stone slag cleaning. Explaining slope repair: it refers to leveling the side of the pipe trench and removing stone slag. The engineering unit is 100m3, and every 100m2 is calculated as 30cm thick. Earthwork slope: in order to keep the soil stable, avoid collapse and ensure the construction safety during earthwork construction. When the excavation exceeds the depth of 1 or the fill exceeds the height of 1, the slope shall be placed. The slope of earthwork slope is expressed by the ratio of excavation depth or fill height h to its bottom width b, and the slope can be made into straight slope, step slope and broken slope. For the definitions of turquoise, secondary hard rock, ordinary hard rock and special hard rock, please refer to the definitions in quota number YT1⑶ 8 ~ YT1⑶1. View original post >>