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Mix loading

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Mixed Tire Loading
Tires And Other Mixes

Mix Loading Different Sizes into Containers

Generally speaking, mix loading tires of different sizes is so common. How many tires of each size I would load to maximize the use of the limited container space in this case? Follow me step by step and we will know the answer! First of all, it is important to know how many tires can fit in a certain size into each 40HQ. Now let’s start our study journey of today!

If you don’t know anything about it

How many tires can fit into a sea container?

Mix Loading Different Sizes Into
A Container / Containers

STEP 1
STEP 2
STEP 3

Find The Volume Coefficient Per Tire After knowing the quantity/40HQ of each wanted size, we can calculate the volume coefficient per tire easily with a formula.
Single tire volume coefficient = 1 / loading quantity per 40HQ of this Size
For example, 1*40HQ can load 280pcs of 11R22.5 truck tire. Then the volume factor of a single tire for this tire is: 1/280=0.00357
Find The Volume Coefficient Per Size Here is a formula:
The volume coefficient of the single tire of this Size * the corresponding quantity = the volume coefficient of the Size
For example, when the number of 11R22.5 is 100, we can derive: 0.00357*100=0.357
sum up all volume coefficients of each size We sum up all volume coefficients of each size, and when the result is less than and close to 1, we will get the quantity of tires of a 40HQ container. Formula stands below
Size A volume coefficient * Size A quantity + Size B volume coefficient * Size B quantity + …=1
For example:When we mix 11R22.5 and 385/65R22.5 into a 40HQ, how do we calculate the quantity of each size? Similarly, according to the above calculation formula, the volume coefficient of 385/65R22.5 is about 0.00513 (1/195~=0.00513)

Calculate Tire Standards For
Large Size Differences

Calculate Size

This formula is also suitable for calculating the packing volume of tires with large size differences (larger tires mixed with smaller tires).

Size	Quantity	Volume Coefficient Per Tire	Volume Coeflicient * Quantity	olume Coeflicient For Each Size
11R22.5	132	0.00357	0.00357*132	0.47124
385/65R22.5	100	0.00513	0.00513*100	0.513
Total Volume Coe Ficient				0.98424

It is worth noting that when the result is close to 0.43, these tires can be loaded into a 1*20GP.
So, when the result is close to X.43 (e.g. 1.43, 2.43, 3.43…), 20GP container can be used to load tires.
For example, when the sum result is 5.43, these tires need totally 6 containers, 5*40HQ+1*20GP.

Quantity Formula For Multiple Containers

Multiple Container Formula
If you need to calculate the quantity of more than one container, this formula also applies
Size A volume coefficient * Size A quantity + Size B volume coefficient * Size B quantity + … = Container quantity
(PS: If there is a decimal in the obtained result, the result will be calculated as +1 after removing the decimal.) For example, when the result is 1.23 + 2.15 + 0.42 = 3.8, remove 0.8 and change 3 + 1 = 4. “4” means that 4 containers are needed.
Notes On Calculation Formulas

It is worth noting that when the result is close to 0.43, these tires can be loaded into a 1*20GP. So, when the result is close to X.43 (e.g. 1.43, 2.43, 3.43…), 20GP container can be used to load tires. For example, when the sum result is 5.43, these tires need totally 6 containers, 5*40HQ+1*20GP.

TNR Tire Mix Loading Cases

Mix Loading Of Tires And Other Parts

When we mix tires with other machines, can we just use this formula to calculate? The answer is no. So how do we calculate it.
Let’s do the math step by step!

Understand The Volume Of A
1*40HC Container

40 ft High cube	Container
Dimensions	External	12.192X2.438×2.896	M
	External	40x8X9.5	FT
	Internal	12.031X2.348X2.695	M
Door Opening(W*H)		2.336×2.585	M
Inside Cubic Capacity		76	CBM
Maximum Gross Weight		30,480	KG
Tare Weight		3,990	KG
Maximum Payload		26,490	KG

Understand The Volume Of A
1*40HC Container

It is crucial to consider the actual volume occupied by the product instead of the volume of the product itself.
For example, there are 9 wooden boxes of 0.7m*1m*0.85m (product description: lamps), which will be loaded with tires. As you can see, there are two ways to place these wooden boxes

How To Place Wooden Boxes

To make it more intuitive, the color green will mark available space for the tires, the second way to load the tires should be taken, as taking the second way reduces the wasted space. Besides,we also need to take into account that lamps are fragile and should not be placed on tires.

now it’s easy to calculate dimension not available for tires.

Calculate The Space Where The Tires Can Be Placed

Bring the data in and you get

Tyre space = total container volume – dimension not available for tires

Space available for tires =
12.031*2.348*2.695-4.81575=76.13-4.82=71.31

Calculate the sum of the volume coefficients of the tire

The sum of the size volume coefficient is the proportion of space available for tires to the entire internal volume of the container. Based on this relationship, we can derive the formula:

Space available for tires / Container volume = available volume coefficient

Bringing in the data, we get
71.31/76.13=0.937 This result is the sum of the volume coefficients of the tires

Calculate The Number Of Tires
Using The Total Tire Volume
Coefficient

After knowing the total volume factor of the tire, we can get the following formula:
Tire usable volume coefficient = Size A volume coefficient * Size A quantity + Size B volume coefficient * Size B quantity +… Size F volume coefficient * Size F quantity
For exmaple, mix with 11R22.5 and 315/80R22.5

Size	Volume Coefficient Per Tire	Volume Coeflicient * Quantity	Quantity	Volume Coeflicient For Each Size
11R22.5	0.00357	0.00357*132	50	0.285
385/65R22.5	0.00513	0.00513*100	126	0.513
Total Volume Coe Ficient			176	0.64638

Real Cases For Mixing Tires With Parts

Depending on different occasions, there will be some discrepancies between the theoretical results and the actual quantity.

If you need to adjust quantity to balance your container, you could contact us. TNR , as a team well experienced in mix loading, will provide you a perfect solution.