Question 2: When can the road bed rolling test be applied? ? The quota items of subgrade shaping and rolling, sidewalk shaping and rolling include artificially digging high and filling low, with an average thickness of 10cm, leveling the bottom surface, making it form the vertical and horizontal slopes required by the design, and compacting it. Road bed rolling inspection and sidewalk shaping rolling engineering, whether new or old road reconstruction projects, need to be calculated. Fujian quota says so.
Question 3: What does the road bed rolling test mean in the municipal quota? It refers to the two work contents of "rolling" and "checking".
Question 4: Do you need to do road bed rolling inspection for track and field events? Which range to test? all
Question 5: In the project cost: What items does the road bed rolling inspection include? Is it a single finger examination? Or does it include compaction and leveling? Refers to "rolling" and "inspection".
Question 6: the problem of rolling face on the road bed is very professional. Familiar with the municipal engineering quota, you will know the answer.
1, the width part, the increased part is extra wide, that is, the working face, which is stipulated in the rules for calculating quantities. The basis is that the quota standards in various places indicate the calculation of quantities according to this regulation.
2. The coefficient problem, which means the same as above, is an auxiliary requirement for engineering quantity calculation, and the coefficient of 1. 1 is for dump trucks to carry earth. If backhoe excavators are used for loading, the number of earth-moving fleets of dump trucks is multiplied by the coefficient1.1; If it is loaded with a front shovel excavator, the times of earth-moving shifts of dump trucks are multiplied by the coefficient1.2;
Quota valuation quota is jointly issued by the Ministry of Construction and the General Administration of Quality Supervision, Inspection and Quarantine. The data inside should be the theoretical data of many years' experience and practical operation, and it is the benchmark of our current bidding quotation for engineering quantity.
Question 7: How to determine the width of subgrade, subgrade and pavement in municipal engineering? 1. Subgrade engineering.
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. Every increase or decrease of a subtitle in this chapter 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).
Question 8: What is the difference between road bed rolling and subgrade rolling? Why is the unit price of measurement so different? Road bed refers to the upper bed and the lower bed. Generally speaking, the filling material requirements of 0-30cm roadbed and 30-80cm roadbed are higher than those of subgrade, and the compaction requirements are also higher than those of subgrade. Such as (gravel cushion).
Subgrade generally refers to the upper embankment (80- 150cm) and the lower embankment (below 150cm), which are mostly filled with natural soil and have low compaction requirements (replacing soft foundation or special subgrade is usually soil subgrade).
According to the above situation, the unit price of road bed is of course higher than that of subgrade.
According to the filling length, height and width, the construction site records should be carefully and clearly, and the calculation will not be repeated. If the recalculation technician is not clear, the metrological personnel should also be able to find out. Be careful.