First, the preparatory work before the budget
 For a beginner should do Qingyuan steel pre-budget necessary some knowledge, we must first know Qingyuan steel construction technology, specifically how each process is picking, how cutting, how construction, which can make the calculation of quantities later when not leak, we can also know where some more losses; also learn Qingyuan steel construction norms such as iron Feet is how to arrange, what are the requirements, the number is the number; non-destructive testing, H-shaped steel butt weld NDT needs to know which is the H-beam flange, which is H-beam web and weld needs a wing of 100% over the probe, the web two welds required to obtain 20% exploration and so on, but also to understand the scale, metal structure fabrication and installation process know What subheadings fixed quotas, a specific project which sets the amount of the subheadings in order to calculate the papers clearly marked on different sub-purpose engineering, in order to facilitate future viewing.

After reading quota, quota know what subdirectory go to study engineering calculation rules, based on the fixed sub-headings have learned in the learning calculation rules, learn the calculation rules for each subdirectory in the calculation of what it should be noted, such as metering the unit is m or m2, such as super-steel probe to the weld length "m" as a unit of measurement, surface inspection of sheet metal plate to plate area "m2" as the unit of measurement; in particular, to remember what is a joint platform, because the United internet subheadings cost is relatively high, set this more appropriate, joint internet platform is the platform more than two devices composed of interconnected easy access used when calculating the amount of the project including ladders, railings, handrails weight platform. For example, when we compute platform framework, in addition to columns and beams, all of the remaining quantities can be regarded as a joint platform; also carefully look at steel construction technical measures, such as how the framework is fragmented or segmented lifting , what reinforcement, so that the calculated quantities of reinforcement steel erection, can also calculate the required specifications and the number of lifting lugs when lifting out the measures, what kind of platform depends on technical measures in the laying of prefabricated steel structures, much like when you calculate these quantities incidentally also calculated.

When calculating a plan should not be considered a plan, even if the level of the elevation of all ladders, so easy to calculate weight and relatively trouble, for example, you forget this layer count ladder when the plane 10m of elevation, to the elevation of 20m layer also forget this layer ladder, then the ladder counted two most likely from 10m on 20m or 20m at 10m ladder ladder, two ladder is actually a ladder. After another count isochronous engineering, unified calculation ladders, so you can go to a different elevation rate test, not easy to count heavy dew is not easy to count and can count the number of different ladder, there can be calculated as a ladder the quantities, only after the number is multiplied by a ladder on it, and you can come up with a detailed view of the ladder after the ladder has been calculated to avoid the calculation of a ladder to find a detail, counted after the close up, count under a ladder looking ladder detail, which can greatly improve the efficiency and accuracy of the calculation.

In calculating the length of the bar to pay attention to the column foot elevation, but also the thickness of the floor and lose column capitals plate column base plate thickness can be seen from the drawings, but no specific drawings in capitals plate thickness, different columns there are different thicknesses capitals plate thickness from the junction diagram it can be found. Steel gusset plate calculation is a calculation of quantities of difficulty, so before computing node plate must be read carefully to count node in the node graph board. In calculating the gusset plate, if the node is not a regular rectangular plate, the longest side and most graphically broadside in a rectangular area calculation, to distinguish what is a steel beam connection, what is hinged beam, different LEONG Support beam different corresponding node board is also different, so we must pay attention bearing beams corresponding model in the calculation of the gusset plate, in the gusset plate combination of computing nodes to be careful not to count the weight, but also the top of the column and the column FIG distinguish central node to count, but two beams at a height greater than 50 and less than 50 nodes map is different, you should pay attention to distinguish to count.

In the calculation of some special way to the project amount means the amount of its production and installation of the project worked out, such as when a fan platform computing quantities, specifications and the way the number of mold when making its angle ring out statistics needed to prevent later to find trouble. After all count quantities can be calculated after the required number of H-beam over the probe according to specifications calculated according to the weight of reinforcing steel erection and other technical measures.

Second, how to apply a fixed budget and matters needing attention
After the electronic document to be entered, easier to find and to facilitate future calculations. To complete the project after the entry of the amount calculated according to different fixed subheadings summarize, the main material preparation table, preparing the main material to form the basis of the amount of the project calculated by multiplying the previous two losses, the loss rate is in different places not the same, I remember there is no loss of steel bulkhead. Careful study of the quota, the calculated quantities to cover the budget, keep in mind that the amount of the budget is the net amount calculated, in the calculation of anti-corrosion steel brush oil separator to remember not brush oil is generally only part of the H-beam fire brush paint brush not finish all the remaining part of both paint brush and paint brush, but the concrete depends on the specific requirements of the drawings. End Quota set and all its subheadings summary, but also for ultra-high corrosion calculation, general corrosion is part of the man-machine ultrahigh part multiplied by 15% in the calculation of the ultra-high scaffolding costs, labor costs by 8% to take into account , obtained directly fixed costs, during take charge. Making preparation based fee of the table. If your area Party asked to use the software, you can learn the software to output into Excel in the form of budget software version can also be directly input into the budget version of the software, the software calculates the ultra-high fees and fee Scaffolding demolition is very convenient.

Third, how the amount of engineering drawings and expense issues should be noted
Then you can pick up the drawing Figure, first do not be afraid, do not be intimidated by a thick sheet, the first sheet of steel do not actually very simple, as long as you get down to seriously look is easy to understand, but to get after drawing to rush to pick up the drawings FIG Pa, I think first of all have a look at the drawings are complete from beginning to end, take a look at his own expense to the drawing which is part of the gallery is a tube, frame, ladders, etc., carefully watching the technical description requirements of the drawings, as well as each page marked in the drawing from start to finish to see if and where do not understand, I want to look around carefully in conjunction with, until understand this. Understand the future and do not rush to dig up map, to look at the drawings to be grilled specified node maps, to know what is the column strong axis, what is the column weak axis, read beams coupled to the bar, beam and column connections combination node graph, also called clear some specific, such as cantilever: at one end of the beam and the column or beam steel pick, while the other end is hinged beam, beam type / FL, then indicate left steel beam model / FR showing right steel pick. Grilled quantities when drawing papers required by law to clear, for later in the investigation to know how the original count, different subheadings in the manuscript must be clearly marked, such as the amount of which is part of the framework, which amount is part of a joint platform , as well as papers in models such as steel Q235B, Q345B must be clearly distinguished.

The following can be numbered sequentially to drawing Pa map, although it is a sequence diagram a steak, but when combined with grilled FIG also around, and do not count and do not re-count leak. A fixed beam elevation plan view drawings in elevation in just do not compute, because the plan in computing more intuitive, if the elevation where the operator to calculate the weight, and in some elevation where there is no specific elevation beam the plan, then when you want to calculate the elevation of quantities, such as the plan is all elevation 10m, 20m, 30m, 12m elevation and elevation there, and to calculate the amount of the project, but pay attention to some specific small platform there is no such level, this level do not have to calculate the quantities in elevation, the calculation of the amount of its project in the future a small platform in a plan view can be calculated in a plan view in relatively simple and straightforward and does not reveal. There is no plan in the calculation of the amount of cantilever bracing works, so you want to calculate the elevation in the boom quantities bracing.