Help calulating bolt strength to prevent beam bending

In summary, without complete information, it is difficult to accurately determine the size and strength of bolts required for a water tank lined with Marine Ply and bolted to a fixed bottom section. Factors such as the dimensions of the tank and the material of the bottom section, as well as the type and thickness of the Marine Ply must be considered in order to accurately calculate the minimum bolt strength needed to prevent the tank from bending.
  • #1
Whatamiat
16
0

Homework Statement


The attachment shows a side section of a water tank.(lined with Marine Ply)

The section will be bolted to a fixed bottom section with 4 bolts.

I'm trying to determine the size and strength of bolts required to do this.

Homework Equations



Hydrostatic force?
UDL beam loading?

The Attempt at a Solution



My attempt at starting this problem is shown in the attachment.

Ive calculated the the hydrostatic force on the section.
The pressure on the section varies with depth from 9810pa to 0pa at the top.

Is this a varying uniform load beam problem?
Or is it a point load problem acting at the centroid of the triangle (2/3rds of the way down)

Am I wrong here?

Also where do I go from here to calculate the minimum strength of each of the four bolts to prevent the section from bending?
 

Attachments

  • side section presure.JPG
    side section presure.JPG
    31.6 KB · Views: 376
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  • #2


it is important to consider all factors and gather all necessary information before making a determination. In this case, there are a few key pieces of information that are missing from the forum post. Without this information, it is difficult to accurately determine the size and strength of bolts required for this water tank.

Firstly, the dimensions of the water tank and the material of the fixed bottom section are not specified. This information is crucial in determining the overall weight and size of the tank, which will affect the type and strength of bolts needed.

Secondly, the attachment mentions that the tank is lined with Marine Ply, but it does not specify the thickness or type of Marine Ply being used. This is also important as different types and thicknesses of Marine Ply have different strengths and may require different bolt sizes and strengths.

In terms of the equations being used, the hydrostatic force equation is appropriate for calculating the pressure on the section, but it is important to also consider the weight of the water in the tank. This will add to the overall load on the bolts and must be taken into account in the calculations.

As for the type of loading, it is likely a combination of both varying uniform load and point load. The water pressure will create a varying uniform load, while the weight of the water and the weight of the tank itself will act as point loads at specific points.

In order to accurately determine the minimum strength of each bolt, it is important to consider the maximum expected load on each bolt, taking into account the weight of the tank, the weight of the water, and the varying uniform load from the water pressure. This can then be compared to the strength of different bolt sizes and materials to determine the appropriate size and strength.

In conclusion, as a scientist, it is important to gather all necessary information and consider all factors before making a determination. In this case, more information is needed to accurately determine the size and strength of bolts required for this water tank.
 

What is the purpose of calculating bolt strength when preventing beam bending?

The purpose of calculating bolt strength is to ensure that the bolts used in a beam construction are strong enough to resist the bending forces acting on the beam. This helps to prevent failure and maintain the structural integrity of the beam.

What factors affect bolt strength in preventing beam bending?

The factors that affect bolt strength in preventing beam bending include the material and size of the bolt, the type of loading on the beam, and the conditions of the environment where the beam will be used.

How do I calculate the required bolt strength for a specific beam?

To calculate the required bolt strength, you will need to know the weight and dimensions of the beam, the type of loading it will experience, and the safety factor desired. You can then use equations and tables to determine the appropriate bolt size and strength needed to resist the bending forces.

What are some common mistakes when calculating bolt strength for beam bending?

Some common mistakes when calculating bolt strength for beam bending include using incorrect equations or tables, not considering all the necessary factors, and not accounting for the potential for fatigue or corrosion of the bolts over time.

Why is it important to ensure proper bolt strength when preventing beam bending?

Proper bolt strength is important when preventing beam bending because it helps to ensure the structural stability and safety of the beam. Insufficient bolt strength can lead to failure and potential collapse of the beam, resulting in property damage, injuries, and even loss of life.

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