How to calculate the length of the steel bar inside the circle, and how to calculate the steel bar o

The calculated length of the reinforcement is divided into the budget length and the blanking length. The budget length refers to the calculated length of the steel bar engineering quantity, and the blanking length refers to the calculated size of the steel bar construction preparation, which is both related and different. Both the budget length and the blanking length are the same reinforcement entity of the same component, and the blanking length can be calculated from the budget length adjustment.

The main difference is that the connotation is different and the accuracy is different. In terms of connotation, the budget length is calculated according to the size shown in the design drawing, which includes the lap length that has been specified in the design, and the lap length that is not specified in the design is not calculated (the lap length that is not specified in the design is considered in the quota loss, and the list pricing is considered in the ** composition) However, in practice, the lap length is added to the length of the fixed length. The cutting length is based on the sizing situation of the construction feed, the actual reinforcement connection mode and the specific requirements of the construction specification for the number and location of the reinforcement joints, considering the calculated length of all laps (the relative quota consumption only excludes the production loss), and sometimes the construction technology and construction process should be considered, and if it is a sectional construction, the reinforcement connection between the two flow sections should also be considered.

For example, the lap joint of the foundation reinforcement of the vertical component of the column and wall, the lap joint of the steel bar between the upper and lower layers, the longitudinal reinforcement of the closed ring beam and the lap joint of the circular stirrup and the welded closed stirrup are all regarded as the lap joints specified in the design and should be calculated in the engineering quantity. The steel bar lap produced by the short length of the reinforcement reinforcement relative to the length of the reinforcement of the reinforcement belongs to the lap that is not specified in the design, and the list of engineering quantities is not calculated, like a 50m long raft foundation, how many lap joints are needed in the middle of a steel bar, and the construction blanking should be considered according to the stress of the component reinforcement.

In terms of accuracy, the budget length is calculated according to the illustrated dimensions, i.e., the geometric dimensions of the component, the thickness of the reinforcement cover and the bending adjustment value, and does not take into account the difference between the read out illustrated dimensions and the actual dimensions of the rebar production, and the blanking length should all be taken into account. For example, for a rectangular stirrup, the budget length only considers the cross-sectional width and height of the component, the thickness of the rebar protective layer and the two 135° hooks, and does not consider the three 90° straight bends. The length of the blanking should be considered.

The purpose of discussing this issue is not only to accurately calculate the amount of reinforcement to determine the cost, but also to calculate the actual cutting length accordingly, in order to guide the construction. The shape of the rebar blanking is accurate, the number of roots and the length of the rebar are accurate, otherwise it will cause catastrophic consequences, and the rebar budget is only a quantitative error, at most the error rate exceeds the allowable range and is recalculated. In the calculation difficulty loading and unloading is higher than the budget requirement, and the calculation of a complex sump blanking calculation of different heights and sizes of special-shaped height must be highly accurate, and the current reinforcement budget software is mostly rough calculation, although the amount is not much different, but can not be used for construction.

There are several key factors in construction blanking: its operability, standardization, and optimization of blanking. The rebar software that can be used for construction cutting must be used for budgeting, and vice versa.

How to calculate the reinforcement of the circular foundation pro! Hello, happy to answer your <>. The reinforcement calculation for a pro-circular foundation is:

The square of the radius minus the square of the spacing multiplied by 2 equals the length of the straight section of the next steel bar. Circular foundation reinforcement calculation reinforcement length calculation formula = r 2-h 2 radius a - thickness of the reinforcement protective layer h - reinforcement distance circle is widely used in housing construction, light rail, bridges and other projects stirrups to connect closed ring stirrups, as well as part of the connection of short reinforcement after the material is broken, change the lashing, I hope mine can help you <>

Do you have any other questions?

Calculation formula of reinforcement length = [[r 2-h 2] r - radius a - thickness of the reinforcement protective layer h - distance between the reinforcement and the center of the circle.

Draw a circle proportionally, draw a diameter through the center of the circle, make a straight line with a spacing of 150 and parallel to the diameter in proportion, then trim off the parts outside the circle, measure the length one by one, and then subtract the thickness of the protective layer, add the length of the hook, and add it up.

If the circular plate is bidirectional, you only need to find the length of the rebar at the diameter of the circle 1 4 as the average length, and then multiply it by the total number of roots. The number of roots is the diameter distribution spacing (take the integer plus 1, for example, it is 53) + 1 (54), bidirectional *2, if it is a double bidirectional *4.

Bright round rebar. In fact, it is a small round steel and a disc round of ordinary mild steel. Deformed steel bars are ribbed steel bars with a surface, usually with 2 longitudinal ribs and transverse ribs evenly spaced along the length.

There are three types of transverse ribs: spiral, herringbone, and crescent. It is expressed in millimeters of nominal diameter. The nominal diameter of the deformed reinforcement is equivalent to the nominal diameter of the light round reinforcement with equal cross-section.

Steel bars are mainly subjected to tensile stresses in concrete.

This is very easy to calculate, the length of the first one is 10 meters, the length of the last one is 0, if it is a circle with a diameter of ten meters every 20 centimeters, use 10 meters divided by 20 centimeters is equal to 50, that is to say, a total of 50 steel bars are placed in a single row, and 50 steel bars actually have 49 empty, that is to say, divide 10 meters by 49 is equal to, this result is the decreasing value of each steel bar, that is, subtract 10 meters is the length of the second steel bar, and then subtract. 02040816 is the length of the third one, and so on until the 49th is OK, which is a single row, and then multiplied by 2 is the two-way upper and lower layers of steel bars.

Calculation formula: steel bar length = plate net span ln + length extending into the left and right supports + hook increase length. (Data can be brought in to calculate).

Calculation of specific data:

Bottom reinforcement length = net length + 2 * max (support width 2,5d) + 2 * primary reinforcement) + lap.

Number of roots = (net length - 2 * 50) spacing + 1

Gluten length = net length + 2 * la + 2 * primary reinforcement) + lap.

Number of roots = (net length - 2 * 50) spacing + 1

LA: non-seismic; LAE: Earthquake resistant.

The length of the negative reinforcement of the end support = net length + LA + plate thickness - 2 * protective layer).

Number of roots = (net length - 2 * 50) spacing + 1

The length of the negative reinforcement of the middle support = left net length + right net length + 2 * (plate thickness - 2 * protective layer).

Calculation formula: steel bar length = plate net span ln + length extending into the left and right supports + hook increase length. (Data can be brought in to calculate).

Calculation of specific data:

Bottom reinforcement length = net length + 2 * max (support width 2,5d) + 2 * primary reinforcement) + lap.

Number of roots = (net length - 2 * 50) spacing + 1

Gluten length = net length + 2 * la + 2 * primary reinforcement) + lap.

Number of roots = (net length - 2 * 50) spacing + 1

LA: non-seismic; LAE: Earthquake resistant.

The length of the negative reinforcement of the end support = net length + LA + plate thickness - 2 * protective layer).

Number of roots = (net length - 2 * 50) spacing + 1

The length of the negative reinforcement of the middle support = left net length + right net length + 2 * (plate thickness - 2 * protective layer).

Hello, the calculation method of the length of the reinforcement stirrups: 1. The general algorithm is the stirrup length = (beam width - protective layer * 2 + beam height - protective layer * 2) * 2 + , 75mm) * 22, if the actual calculation and blanking length, then the algorithm is: 90 90 stirrup reinforcement calculation formula is:

Stirrup inner circumference - 5 90° hook endothelial difference (the length of the straight section at each hook (10d 75mm, the straight length is 10d, 10d 75mm, the straight length is 75mm) that is, when the reinforcement specification is 10d 75mm, the stirrup length = component perimeter - 8 protective layer thickness + steel bar specification is 10d 75mm, that is, when the stirrup diameter is 6mm, stirrup length = component perimeter - 8 protective layer thickness +