1. When subgrade is filled with soil, the width of filled soil is calculated as 0.4m wider than the design on each side. When filling the river, the width of each side should be calculated according to the design regulations, so as to compact the subgrade and cut the slope.

2. The engineering quantity calculation of artificial and mechanical grooved roller compacted tires is calculated according to the design width of the pavement, and the base mixture is mixed on site, with a width of 0.8m on each side to ensure sufficient mixing width, and the width of 0.4m on each side of ready-mixed and commercial base mixture is calculated.

3. The laying area of geotextile is the area surrounded by the outer edge of the anchorage ditch, including the bottom area and side area of the anchorage ditch.

4. Calculation of ash handling capacity:

(1) If there is a description in the drawing, it shall be calculated according to the engineering quantity designed in the drawing.

(2) If it is not specified in the drawings, it shall be calculated according to the actual quantities.

Second, the pavement engineering

1. The quantity of base course mixture shall be calculated according to the design base course width of 0.3m on each side. The foundation width of cement concrete pavement is calculated as 0.3m on each side. The sand cushion is calculated according to the width of 5cm on each side to ensure the mixing width and quality.

2. Various materials in the base price of basic mixture are prepared according to the commonly used mixture ratio. If the mixture ratio is inconsistent with the design mixture ratio, the material consumption can be adjusted, but the labor and mechanical consumption cannot be adjusted. Related materials can be converted according to the following formula:

ls =(Ld+Zd)× 1

Where: the number of materials converted by ls according to the design mixture ratio;

The number of materials with basic compaction thickness in Ld budget base price;

The number of materials 1cm for each increase or decrease of compaction thickness in Zd budget base price;

Material percentage of Ps design mixture ratio;

Percentage of materials expressed in Pd budget base price.

3. This chapter has a subtitle of "every increase or decrease", which is applicable to the compaction thickness within 20cm. When the compaction thickness exceeds 20cm, it should be calculated according to the double-layer structure paving.

4. The maintenance area of road engineering base mixture should be calculated according to the design base top surface area.

5. The area occupied by each well location is not deducted from the subgrade calculation.

6. The mechanical paving plant-mixed (commodity) base mixture project does not include the mixture. The quantity of the mixture is widened by 0.3m according to the designed base width, and the volume per side is multiplied by 1.02.

7. The quantities of asphalt concrete, cement concrete and other pavements in road engineering shall be calculated by multiplying the design length by the design width (including turning area), without deducting the floor area of various wells.

8. Calculated by tons, the reference compaction density of asphalt concrete is: coarse-grained asphalt concrete 2.36t/m3, medium-grained asphalt concrete 2.35t/m3 and fine-grained asphalt concrete 2.30t/m3 (2.54t/m3); For basalt asphalt concrete); If it is different from the actual situation, it can be calculated according to the actual situation.

9. The thickness of coarse-grained asphalt concrete paved on lime-fly ash soil, multi-layer soil and slag base shall be 0.5cm of asphalt concrete according to the design thickness. The thickness of coarse-grained asphalt concrete paved on the slag stone base is increased by 1cm according to the design thickness. The thickness of medium and fine grained asphalt concrete paved on coarse grained asphalt concrete shall be paved with 0.3cm asphalt concrete according to the design thickness.

10. The pavement surface layer shall be calculated in square meters according to the size shown in the design (the surface layer with flat stones shall be deducted from the flat stone area).