How to calculate rebar, rebar weight calculation formula

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Rebar meter weight formula:

w1=d*d*

d stands for diameter.

Meter weight is the weight of one meter, unit: kg

If the rebar is 12 meters.

The weight of one piece is w2=meter weight*12

i.e. w2=d*d*

10mm rebar meter weight w2 = 10 * 10 *

The weight of a 12-meter-long rebar with a diameter of 10mm is:

w3=10*10*

If 1 ton = 4000 RMB, then.

A 12-meter-long rebar with a diameter of 10mm is **.

p=10*10*yuan.

Multiply by the square of the rebar diameter (mm) by the length l

It is round 10 rebar per meter weight. The weight of the rebar is proportional to the square of the diameter (radius).

g m = weight per meter (kg) diameter of rebar (mm) diameter of rebar (mm).

a.The weight of the bar per meter (round bar) = the square of the diameter.

is the theoretical weight of the reinforcement of 10, and the diameter of 12 and below retains three decimal places;

Two decimal places are kept for diameters above 12; Rounding up to 6 when retained.

b.6 mm per meter weighs kilograms.

8 mm per meter weighs kilograms.

10 mm per meter weighs kilograms.

12 mm per meter weighs kilograms.

Formula: Diameter mm Diameter mm Length m

Example: Rebar 20mm (diameter) 12m (length) Calculation: 20 20

Rebar is the common name of hot-rolled strip crack rib Li steel bar. The grade of the hot-rolled steel bar is composed of HRB and the minimum yield point of the grade. H, R, and B are the first letters of the three words "hotrolled", "ribbed" and "bars", respectively.

The calculation method of the reinforcement weight is: diameter (mm) * diameter (mm) * reinforcement length (m) = reinforcement weight (kg), w = (1 4) is the diameter of the reinforcement centimeter and the result is kilogram meters).

The theoretical weight of steel is calculated based on the nominal size and density of the steel (in the past known as specific gravity), and the weight is called theoretical weight. This is directly related to the length dimensions, cross-sectional area and allowable deviation of the dimensions of the steel. Due to the allowable deviation of the steel during the manufacturing process, the theoretical weight calculated by the formula is different from the actual weight, so it is only used as a reference when estimating.

Hello aThe weight of the bar per meter (round bar) = the square of the diameter. is the theoretical weight of the reinforcement of 10, and the diameter of 12 and below retains three decimal places; Two decimal places are kept for diameters above 12; Rounding up to 6 when retained.

b.6 mm per kilogram per meter, 8 mm per kilogram per meter, 10 mm per kilogram per meter, 12 mm per kilogram per meter.

Summary. formula, if you want to calculate the gross weight, then you can directly use the weight of the steel plus the weight of the packaging material to get the result. At present, the most purchased specifications are 6mm, 7mm, 10mm, 12mm.

The formula for calculating the rough weight of rebar is as follows: diameter mm diameter mm length m Example: rebar 20mm (straight and good diameter) 12m (length) Calculation: 20 20

formula, if you want to calculate the gross weight, then you can directly use the weight of the steel to add the weight of the packaging material to the weight of the packaging material to bury the bright sensitivity to get the result. At present, the most purchased specifications are 6 mm, 7 mm, 10 mm, 12 mm curved branches.

In the specification, there is no internal difference crack diameter and outer diameter of the thread, which should refer to the threadTrailswithlarge diameter;

The small and large diameters of the different threads are made ofstandardsprescribed. The figure below is the calculation formula for the size of ordinary threads specified in the national standard GB192 "Ordinary Thread - Basic Tooth Shape":

Threads: Teeth with the same tooth profile and continuous convex along a helix on a cylindrical or conical surface.

Spirals on cylindrical and conical surfaces:

Tooth shape and tooth body: 1-tooth body; 2-alveolar; a - Tooth height; b - crest; c - base of teeth; D - Lateral teeth.

Thread path: The diameter of an imaginary cylinder or cone tangent to the external or internal crest.

Large diameter of the thread: The diameter of an imaginary cylinder or cone tangent to the top of the external thread or the base of the inner thread. (d,d) in the image below).

standardsIt is a uniform regulation of repetitive things and concepts, which is based on the synthesis of science, technology and practical experience, and is approved by the competent authorities by consensus of the parties concerned, and is issued in a specific form as a guideline and basis for common observance".

As a common mechanical component, threads have many series of standards related to threads in countries around the world. There are no less than hundreds of standards for threads in China. The calculation of threads should be carried out in accordance with the relevant specifications.

Use vernier calipers to measure the diameter directly: one side of the rib, one side of the smooth surface, measure the three sections to calculate the average diameter, and reduce 5% of the method.

According to the provisions of the national standard GB steel for reinforced concrete Part 2: hot-rolled ribbed steel bars, if you want to detect the cross-sectional size of hot-rolled ribbed steel bars, you should not only detect its inner diameter (it is less than the nominal diameter of the steel bar), but also test its rib height.

If both are within the allowable range of the code, the cross-section dimensions meet the requirements of the code. The specification stipulates the inner diameter of various nominal diameter steel bars, the nominal size of the rib height and the allowable error.