20 concrete stairs step by step how much money
Third, the construction of reinforced concrete formwork calculation rules
1. In addition to the provisions of the provisions of the amount of cast, prefabricated and component categories, respectively, according to the relevant provisions of one and two.
2. Large pool tank, etc., according to the basis of the wall, plate, beam, column and other relevant provisions of the calculation and set the corresponding fixed items.
3. Hydraulic sliding steel template construction of the chimney, water tower tower, silos, etc., according to the concrete volume to m3 calculation. Prefabricated inverted conical water tower shell template according to the concrete volume to m3 calculation.
4. Prefabricated inverted conical water tower shell assembly, lifting, in place, according to different volume to seat calculation.
Second, the prefabricated reinforced concrete components template engineering calculation rules
1. The amount of prefabricated reinforced concrete formwork shall be calculated in m3 according to the volume of concrete entity, unless otherwise specified.
2. The small pond is calculated in terms of the volume in m3.
3. Prefabricated pile tip is calculated according to the virtual volume (not deducted from the virtual volume of the pile tip)
Fourth, the concrete template project engineering calculation example
1, as shown in the figure, seeking 100 pieces of prestressed reinforced concrete hollow plate template project volume.
Solution: Engineering amount = 3.28 × [(0.57 0.59) × 0.12 ÷ 2 - π / 4 × 0.0762 × 6] × 100 = 0.139 × 100 = 13.9m3
2. As shown in the figure, find the amount of cast-in-place reinforced concrete spiral staircase template (known as a three-story building, not a man's roof).
Solution: (1) ladder D = 600mm, should be deducted its occupied area.
(2) Engineering amount = (18 × 16 65) / 360 × π × (1.02-0.32) × 2 layer = 353/360 × 3.14 × 0.91 × 2 = 5.60m2
3, as shown in the figure, seeking cast steel reinforced concrete awning template project volume.
Solution: engineering amount = 1.2 × 2.4 = 2.88m2
4, as shown, seeking cast-in-place reinforced concrete arch plate template engineering (calculation of the span plate)
Solution: (1) arch plate support plate area is its inner arch area;
(2) Engineering amount = Ra π /180 × 48.00= 8.613 × 105 × 0.01745 × 48.00 = 757.50m2
5, a project of cast-in-place concrete structure column as shown in the figure, of which four are arranged at right angles to the corner, four arranged in the T-shaped corner, the project wall thickness of 240mm, structural column height of 20.04m, seeking its Template works.
