Find the engineering quantity calculation rules for the painting project of steel fence gate, steel

According to the new "Valuation Rules for Bills of Quantities of Construction Projects" GB50500-2008, the metal grille door is calculated by area according to the quantity shown in the design drawing or the size of the opening shown in the design drawing; Railings are calculated based on the length of the centerline.

However, you are talking about the painting project, according to the rules, you can find that it is calculated according to the size of the design drawing and the area of the paint part.

It's by area! The budget will fully consider these steel pipes! Let's not think it's too little! Just count the area of its opening!

According to the new "Valuation Rules for Bills of Quantities of Construction Projects" GB50500-2008, the painting works of metal grille doors, steel window grilles and steel railings are calculated according to the size shown in the design drawings and the area of the painted part.

But in actual operation, because the size of the railing component is small, the model is too much and the surface area is complex, so the measurement of the railing brush paint in the project does not need to calculate the actual painting area, according to the relevant provisions of the provincial valuation, according to the construction quota prepared by the empirical data, the pricing of such projects is based on the weight of the steel component, and the unit obtained by multiplying the empirical coefficient of the number of paint consumed per ton of component**. The quota includes two kinds of wood surface paint and metal surface paint, and the railing brush paint can be recorded according to the weight of the iron component of the paint.

It's usually calculated by length, which is how much money is per meter, and the same is true for paint.

For this kind of maintenance project, you should use the repair quota or build a supplementary quota by borrowing the state of simplicity. Maintenance items include eradication, coating, grinding, patching, painting, etc.

How to calculate the engineering area of the general railing paint, the construction of the railing in the construction is not easy to do with the construction of the large plane, and the calculation is usually calculated according to the virtual square and the unit price is calculated in ammi. If it can be calculated according to the area of the steel pipe, the unit price is better, after all, a manual brush can not be many meters a day, converted to the square and then calculated according to the cost of the large plane, may not even be enough for the living expenses of the workers.

There is no quota for this kind of construction project, and the shutters are multiplied by the length by the width, so you can't square the leaves one by one.

However, the specific unit price depends on the amount and difficulty of the project!

You can discuss with the construction unit, it seems that it can also be calculated according to the meter**.

Length, width (height), calculated according to the area.

According to the budget quota, the weight of the main material can be used.

The calculation is based on the actual coating rate, regardless of the theoretical coating rate.

Total paint needed: 5200

Total paint sets needed: 14689 20 = 735 sets.

The loss rate of steel structure materials, the current building quota of each province is generally 6%, while the previous quota is 8%, and the margin is additional. The total installation quota depends on the different losses of the steel structure components. Although the current loss rate of steel structure production in general enterprises is controlled at about 4%, but the 6% stipulated in the quota should be a coefficient of comprehensive consideration, for example, the length of the steel plate is 6m and the actual blanking, in principle, the remaining rice can be diverted for other purposes, but sometimes due to the constraints of factors such as plate thickness, it may be necessary to wait for the next few batches of production before using it, and this waiting process is a capital occupation for the remaining materials, so it is necessary to consider the cost of its occupation, as well as the occupation of space in the processing site, The ineffective labor of workers to carry the material, etc., is difficult to determine due to this occupation, so it can only be digested in the attrition rate as a whole.

This is the reason why the quota consumption factor is slightly larger than the actual consumption.

Now, there is no uniform rule for calculating steel structures. The quantity of metal structure specified in the "Specification for Valuation of Bills of Quantities of Construction Projects" can represent the settlement rules of steel structure projects, but there are also unreasonable elements in it. And there are many steel structure projects that exist in practice that are not included.

Therefore, when calculating, we should try to make the engineering quantity we calculate close to the actual situation, and we should simplify the calculation method, and do not turn very simple things into very cumbersome things to calculate!

I suggest that people who are learning cost for the first time should calculate more and calculate more details. In the future, if you are proficient, you only need to count the key components, and the rest of the additional components can be estimated!

There is no fixed calculation model for this, so you have to figure it out on your own!

Rigid Structural Engineering Calculation Rules.

1) Steel roof truss, steel grid.

1) According to the size shown in the design drawing, the weight of the steel is calculated, and the weight of the eyelet, trimming and limb is not deducted, and the weight of welding rods, rivets, bolts and other weights is not increased.

2) Irregular or polygonal steel plates, calculated by their external regular rectangular area.

3) The steel grid frame should be divided into spherical nodes, steel plate nodes and other connection forms.

4) The unit of measurement is t.

2) Steel brackets, steel trusses.

1) According to the size shown in the design drawing, the weight of the steel is calculated. The weight of eyelets, trimmings, and limbs is not deducted, and the weight of welding rods, rivets, bolts, etc. is not increased.

2) Irregular or polygonal steel plates, calculated by their circumscribed rectangular area.

3) The unit of measurement is t.

3) Steel columns, steel beams.

1) According to the size shown in the design drawing, the weight of the steel is calculated. The weight of eyelets, trimmings, and limbs is not deducted, and the weight of welding rods, rivets, bolts, etc. is not increased.

Irregular or polygonal steel plates, calculated by their circumscribed rectangular area.

Specifically, it includes solid belly columns, hollow belly columns, steel pipe columns, steel beams and steel crane beams. The unit of measurement is t.

2) The corbels attached to the steel column are incorporated into the steel column engineering quantity.

3) The gusset plate, reinforcing ring, lining pipe, corbel, etc. on the steel pipe column are incorporated into the engineering quantity of the steel pipe column.

4) the design stipulates that when the steel brake beam, steel brake truss and car block are set, the engineering quantity should be incorporated into the steel crane girder.

4) Profiled steel floor slabs, wall panels.

Profiled steel plate floor: calculated according to the size shown in the design drawing, calculated by laying the horizontal projection area, columns, stacks and the hole area within 0 3m2 are not deducted. The unit of measurement is m2.

Profiled steel plate wallboard: calculated according to the size shown in the design drawing, based on the paving area. The area of the hole within 0 3m2 is not deducted, and the area of cornering, edging, and window sill flooding is not calculated.

The unit of measurement is m2. The profiled steel plate floor slab is poured with reinforced concrete, and the concrete and steel bars are calculated according to the relevant provisions of concrete and reinforced concrete.

5) Steel components.

The general calculation rules for steel members are as follows:

1) According to the size shown in the design drawing, the weight of the steel is calculated. Such as steel supports, steel purlins, steel skylight frames, steel wall frames (including columns, beams and connecting rods), steel platforms, steel walkways, steel railings, steel funnels, steel brackets, sporadic steel components, etc. The weight of eyelets, trimmings, and limbs is not deducted, and the weight of welding rods, rivets, bolts, etc. is not increased.

2) Irregular or polygonal steel plates, calculated by their circumscribed rectangular area. The unit of measurement is t.

6) Metal mesh.

Calculated by area according to the dimensions shown in the design drawing, including production, transportation, installation, painting, etc.

Embedded anchors:

Calculate the budget according to the specification and length**: Calculate the number of sets according to the specification**Internal settlement: calculate the length by tonnage (a+b) * The theoretical weight of the specification set, the nut and backing plate need to be calculated separately (the theoretical weight of the round steel = * d2).

Embedded parts: 1), steel column embedded parts:

Base plate: a*b*The theoretical weight of this specification.

Stiffener: (A+C)*B2*The theoretical weight of the specification.

1. The column base plate of the steel column and.

2) Door frame column embedded parts: the engineering quantity of stiffener plate and embedded parts.

Embedded plate: A1*B1*The theoretical weight of the specification.

Screw: (L1+L2) * The theoretical weight of the specification (the theoretical weight of the steel plate t).

Theoretical weight of round steel

Steel Column (H-Type):

1), steel column (equal section):

Flange plate (steel column top elevation, column bottom plate bottom elevation, column base plate thickness, top gusset plate thickness) *flange plate width, *theoretical weight of flange plate.

Web (Steel Column Top Elevation, Column Bottom Slab Elevation, Column Base Plate Thickness, Top Gusset Plate Thickness) *This web section.

Face height (Thickness of two flange plates) *Theoretical weight of the web.

2) Steel column (variable cross-section): the calculation method of the flange plate is the same as that of the flange plate of the equal-section column;

Web (steel column top elevation, column bottom plate bottom elevation, column base plate thickness, top gusset plate thickness) *The web is the largest.

The average value of the cross-section height to the minimum cross-section height (Thickness of the two flange plates) *The theoretical weight of the web.

3) The actual height of the steel column (equal section) * the theoretical weight of the model.

Theoretical weight calculation method: flange plate width * flange plate theoretical weight * 2 + (web section height two flange plate thickness.

degrees) * theoretical weight of the web (theoretical weight of the steel plate

Steel beam (H-type):

1) Steel beam (roof slope verticality): ratio flange plate (actual length of beam, thickness of end gusset plate) * width of flange plate * theoretical weight of flange plate web (actual length of beam, thickness of end gusset plate) * (web section height of the minimum thickness of two flange plates) * theoretical weight of web.

2) steel beam (honeycomb beam): the actual length of the beam * the theoretical weight of the model Theoretical weight calculation method: flange plate width * flange plate theoretical weight * 2 + (web section height two flange plate thickness) * web theoretical weight (need to deduct the hole area occupied by a single void area on the web).

Theoretical weight of the steel plate

Calculated in tons according to the size of the construction drawing.

Contact me, I can't send an answer here.

One minute to read the calculation of reinforcement quantities.

1.Pay attention to the theoretical weight and length, the theoretical weight of many components is different, such as H-shaped steel, ordinary I-beam, C-shaped purlin, round steel, round pipe are ready-made, you can check the hardware manual, and then, according to the length of each profile in the drawing, multiply and then add it appropriately to get the engineering quantity.

2. Using related software, such as Glodon, etc., it is worth mentioning that the STS module in PKPM has the function of calculus, when you complete the design of a single gantry rigid frame or steel roof truss, its weight will be provided to you to help you make a budget, so the result is more accurate, and you can calculate the weight of irregular cross-section, such as variable cross-section H-shaped steel, saving you trouble.

Check the theoretical weight For example, 250*125*6*9 finished steel Find out the theoretical weight per meter, and then multiply it by the number of meters is the weight of this h steel.

If it's an iron plate, for example, 10 x 150 x 200 iron plate, it should be 10 times multiplied by the density of iron, which is the weight of the iron plate.