The telephone number of your concrete pipe supplier.

If you want to do it the hard way

The area of the OD - Area of the ID (as in pi x R²)

multiplied by the length

Multiplied by the weight/unit volume.

Couplings and extras must be added.

Thanks Hendrik I have since found an easy formula to work out the overall weight of a given length of pipe. (i.e. concrete) Length x Width x Wall thickness x Pi (3.14) = ....... x sq weight = total weight. As in say a concrete pipe of : 3.65m (Length) x 2.4m (Width) x 100mm (Wall thickness) x 3.14 (Pi) = 2.75064 x 2.4 tonnes (being the given weight of a sq meter of concrete) = 6.601 tonnes being the total weight of the concrete pipe.

Best bet... Call the local concrete company.

You need the grade of concrete if you must throw it into a formula.

Best bet is to get the weight of a yard of the particular type of concrete (fiber impregnated, slump, etc), break it down to weight per cubic foot. Get the cubic feet of the pipe... thickness of the pipe is important since this will determine the actual mass of concrete.

Do the simple brain-racking math and drink plenty of water!

JL Mealer

this is true if you need to know an exact grade and weight, but as a general rule to find out the estimated weight, then one can leave out the exact grade of concrete and just do the maths, but when it comes to lifting i.e. cranes then estimates are okay yes

Hi JL Mealer So the question was this : As a crane operator you are sent to a site to lift a large concrete pipe from the ground up onto the back of a truck, as there is nothing marked on the pipe to tell you the weight of the pipe, so how are you going to work out the given weight so you will know what size of sling you will need to use to safely lift the pipe. So you arrive at the site and the 1st thing you do is to measure the pipe, so as a crane operator you should know the given estimated weight of a sq metre of concrete, i.e. 2.4 tonnes, so with this info and the formula shown you can then work out the overall estimated weight and thus select the correct sling to safely lift the pipe. So no need to call the concrete pipe supplier, as there is no reception out here in the bush, just a simple formula, easy when you know how. Thanks for all your help ! cheers Brent C

You may use this formula which is simple;

Get the circumference of the pipe at centerline using 2*pi*r in meter

Multiply this by length, you'll get area in m2

Multiply this with thickness of the pipe (OD - ID)/2), you will get volume in m3

Multiply this by 2500 kg and you'll get the wt of the pipe.

1 for good answer

(pi r one square-pi r two square)*length of pipe*density of concrete.

where,

pi=3.14

r one= outer radius of pipe

r two= inner radius of pipe

thanks

sorry, on this key pad , i do not find scientific notations.

Πr₁² - Πr₂² --- FYI , the "scientific notation" are afforded as insertable options via the CR4 message-editing window, where you type your reply/post in.

Look at the "Toolbar" above the area where you are typing... click on the tools and check them out!

Cheers ~

thanks.

Hi,

22/28(O.D.squared - I.D.squared)X Length of the pipe X Specific gravity of the concrete. Take into consideration if steel or any other reinforcement is done.

Job.

_{22/7 instead of 22/28}

Dear Gust,

22/28 is not an error: Think about it. What is the formula for area of a circle? As I recall, it is Pi * (D squared) / 4.

Pi = 22/7 and therefore Pi/4 = 22/28

Therefore CSA of a pipe = 22/28 X (OD squared - Id squared)

You may use this simple formula:

Weight in LBS/FT = 3.23xTx(D-T) where D= Outside Diameter of the pipe in INCH

T= thickness of the pipe in INCH

(Note: This formula uses typical concrete weight of 148 LBS/CFT. Concrete weight ranges from 112 LBS/CFT to 155 LBS/CFT. Adjust the formula by the ratio for this difference. May need to adjust for Reinforcement if considerable)