四川省水利水电建筑工程预算定额的土方工程说明（Earthwork engineering specification of budget quota for water conservancy and hydropower construction project in Sichuan）.docVIP

四川省水利水电建筑工程预算定额的土方工程说明（Earthwork engineering specification of budget quota for water conservancy and hydropower construction project in Sichuan） Chapter 1 earthwork budget of water conservancy and hydropower construction project in Sichuan Province Explain First, this chapter includes earthwork excavation, transportation, compaction and other fixed total of 50 sections, applicable to water conservancy, electricity, construction works earthwork. Two. The unit of measurement for earthwork quotas shall be calculated in accordance with the natural law except as noted. Three. The name of earthwork quota Natural Square: refers to the natural state of the earth without disturbance. Pine: refers to the natural side by manual or mechanical excavation and loose soil. Solid side: refers to the filling (backfill) and after the compaction of finished products. Four, soil class division, in addition to frozen soil, according to the earth rock sixteen classification method of the first four grades, soil class level. Five, earthwork excavation and filling engineering, in addition to work quota provisions, including digging ditches and small slope repair, remove the ground turf debris, traffic control, safety facilities and road construction and maintenance work area and dumping field. Six, the general earthwork excavation quota applies to the general open excavation earthwork and the opening width of more than 16m of the channel and the mouth area is greater than 80m2 column pit earthwork. Seven, the quota of earthwork excavation of the canal is suitable for the earthwork of the trapezoidal section, the long strip shape and the bottom edge which need to be trimmed and the channel width is less than or equal to 16m. Eight, trench excavation quota, suitable for wide is less than or equal to 4m or slope steeper than rectangular section 1: 0.5 trapezoidal, rectangular length greater than 3 times the width of the bottom slope, only repair does not repair the earthworks, such as wall, wa