How to make a good curtain wall budget?

Someone has to get it. . . . Let me write something simple.

Problems that should be paid attention to when calculating quotation:

First of all, we should observe which items are included in the project for quotation, generally including aluminum profiles, adhesives, accessories and iron parts. Then calculate by category.

1. profile, if you don't have the profile category shown on the drawing (there is no reference weight in the book), then calculate the profile section, and the formula w (weight. KG)=F (cross-sectional area, 2) * l (length, m)*p (density, g/3) * 65438+. Density of steel = 7.85; Density of stainless steel =7.98 (please pay attention to unit conversion). Generally, aluminum alloy pressure plates are 50mm long, and the row density in the Far East is every 300 mm

2. Glue, which can be converted into cm (mm in general drawings) when calculating glue. For example, the glue is 6mm wide, 22mm high and 1m long.

The formula is: how many milliliters is 0.6*2.2* 100, and then how many pieces can be calculated according to the capacity of each rubber brand. If you don't want to make a detailed calculation, you can probably use the dosage, such as 0.7 pieces of weather-resistant glue/㎡ (with small round bars); Structural adhesive 1.2 PCs/㎡ (with double-sided adhesive on the side),

3. Accessories, including many accessories, such as the above-mentioned double-sided tape, small round stick, rubber strip (EPDM), and sometimes 1.2mm insect net or fire-proof galvanized sheet (for fire prevention and heat insulation). If there are windows, there should be window fittings.

4. It is necessary to calculate the weight of iron parts, similar to the contour algorithm mentioned above. If there is no reference weight at hand, it is still based on calculation. Weight is calculated by multiplying the cross-sectional area by the density and length.

For example, 36*36*3 angle steel can be used (0.036+0.036) * 0.003 * 7850 =1.6956kg/㎡ (pay attention to the conversion unit).

5. Finally, labor costs, management fees, site fees and other expenses are added, which are different according to the requirements of each company.

6. The calculated price should be the quotation per square meter, and those mentioned above will be divided by the selected area during calculation (don't leave it out).

To calculate the budget quotation, you still need to learn to use CAD. Generally, we always calculate by looking at pictures, because sometimes the details will not be marked on the drawings, so we need to use CAD tools to measure or calculate the area. This will save a lot of unnecessary calculations. And the picture is clear, and every facade can be clearly observed. It is also important not to leave out items and make sure to see clearly which items are included.

Look, look at those things that have not been mentioned. You can ask me again.