The number of stirrups in the reinforced concrete beam should be calculated according to the net length of the beam, that is, the net length of the beam minus 50mm * 2.
That is: quantity of reinforcement in slab = (net length (or net width) of slab – reinforcement spacing) / reinforcement spacing + 4 How should the quota be applied to the double-sided clean water wall? Answer: there are only quota sub items of single-sided clean water wall in the general quota, so the quota can be directly applied to single-sided clean water wall, while there are no corresponding quota sub items in the general quota of double-sided clean water wall, so we can deal with it in this way: check the quota sub items of single-sided clean water wall and mixed water wall with the same thickness in the quota, and calculate the price difference between single-sided clean water wall and mixed water wall, Then add it to the fixed unit price of single-sided clean water wall, so it should be the unit price of corresponding double-sided clean water wall.
The principle of conversion is equal replacement.
For example, the excavated earth of a project is 100m3 and the actual backfill is 40m ³ (loose) 46m ³）， Outward earthwork 60m ³ (loose) 68m ³） The quantities of applying the quota shall be based on the excavation of 100m ³， Backfilling earth 40m ³ Outward earthwork 60m ³ calculation.
The unit price of mixed mortar is 88.38 yuan / m ³， Mixed mortar M7 5.
The virtual volume of the pile tip is not deducted, but the hollow part of the hollow pipe pile needs to be deducted when calculating the quantities of the pipe pile.
How to divide the foundation and wall body of masonry? Answer: when the same material is used for the foundation and the wall body or column body, the quota sub items of the wall body or column body shall be applied above the ground and the quota sub items of the foundation shall be applied below the ground.
5.
That is, the number of stirrups in the column = (column height – column protective layer) / stirrup spacing + 1.
This is because the first reinforcement of the stressed reinforcement of the slab should be arranged half a distance from the support of the slab in actual construction, and there is just one reinforcement spacing on both sides.
How should the quantities be calculated? A: the quota stipulates that the earthwork shall be calculated based on the volume in the natural dense state, that is, whether it is excavation, backfilling and outward transportation, the quantities shall be calculated according to the dense state.
How to divide the quantities of ring beam and lintel? A: when the ring beam passes through the upper part of the door and window openings, this part of the ring beam is used as a lintel, that is, where the ring beam is used instead of the lintel.
The stirrup quantity of reinforced concrete column should be arranged along the full length of the column, while the stirrup quantity of reinforced concrete beam is calculated to the side of the column.
That is to say, if the quantity of masonry mortar with rated content is replaced with masonry mortar with the same design grade, the price difference will be included in the direct cost of the project.
9.
What is the difference between the quantity calculation of reinforced concrete beam and column stirrup? Answer: the calculation method of stirrup quantity of reinforced concrete beam and column is different.
10.
After deducting the concrete protective layer of the column, divide it by the stirrup spacing of the column, and the obtained value shall be rounded up plus one.
8.
When different materials are used for the foundation and wall body, if they are located within 300 of the design indoor ground, different materials shall be used as the dividing line.
2.
For example, for one brick thick mixed water wall, the fixed unit price is 1354.85 yuan / 10m ³， The masonry mortar included in the quota is m2 5.
6.
Here 50mm is the distance from the first Stirrup on the beam to the side of the column, also known as the starting distance.
Mixed mortar 2.25m ³。 If the designed masonry mortar is mixed mortar M7 5，M2.
If they exceed 300, the design indoor ground shall be used as the dividing line.
Is the virtual volume of the pile tip deducted when calculating the quantities of precast reinforced concrete piles? Answer: the volume of precast reinforced concrete pile, including the quantities of bored cast-in-place pile, shall be calculated by multiplying the design pile length by the pile section area.
That is: number of stirrups of beam = (net length of beam – 50 * 2) / stirrup spacing + 13 How to calculate the reinforcement quantity of reinforced concrete slab? Answer: the quantity of reinforcement in reinforced concrete slab should be the net length of the slab along the distribution direction of stressed rigid reinforcement minus the spacing of reinforcement divided by the spacing of reinforcement, and the obtained value should be rounded up plus one.
If the hollow part of the pipe pile needs to be poured with concrete or other filling materials according to the design requirements, it shall be calculated separately.
7.
The ring beam at the door and window openings is calculated according to the lintel, and the division of the ring beam and lintel should be divided according to the design drawings.
How to calculate the number of stirrups in reinforced concrete beams and columns? Answer: the stirrup of reinforced concrete column shall be calculated according to the full height of the column.
Should the quantities of steel pipe cast-in-place piles be calculated according to the inner diameter of the steel pipe or the outer diameter of the steel pipe? Answer: the volume of cast-in-place pile is calculated by multiplying the design pile length by the outer diameter cross-sectional area of steel pipe hoop, and the virtual volume of pile tip is not deducted.
If there is a basement, it shall be bounded by the indoor ground of the basement, the wall body above the ground and the foundation below the ground.
If there is no division in the design drawings, The length of lintel shall be calculated according to the opening size plus 250mm on each side.
The unit price is 99.74 yuan / m ³。.
The collision between project budget and construction, you must know the cost knowledge! 1.
How to convert when the design mark of masonry mortar of masonry engineering is different from the quota mark? Answer: if the grade of masonry mortar contained in masonry engineering quota is different from the design grade, it can be converted.
For example, the unit price of one brick thick single-sided clean water wall in a certain quota is 1620.74 yuan / 10m ³， The unit price of one brick thick mixed water wall is 1555.39 yuan / 10m ³ The price difference between the two is 1620.74-1555.39 = 65.35 yuan / 10m ³， Then the unit price of double-sided clean water wall can be determined as 1620.75 + 65.35 = 1686.10 yuan / 10m ³。 5.
Earthwork backfilling and earthwork outward transportation are loose earthwork.
