- #1
websocket
- 4
- 0
I need to erect a hoist beam with a 10' span using square tubing. Which is stronger, 3"x3" 1/4" wall or 4"x4" x 3/16"? Also, how much weight could I lift at the center?
3x3 and 4x4 square tubing refer to the dimensions of the square tube, with 3x3 indicating a square tube with sides measuring 3 inches and 4x4 indicating a square tube with sides measuring 4 inches. This means that the 4x4 square tubing is larger and has a greater cross-sectional area than the 3x3 square tubing.
Bending strength, also known as flexural strength, is the ability of a material to resist deformation or breakage when subjected to a bending force.
The bending strength of a square tube can be calculated using the formula: Bending Strength = Moment of Inertia x Yield Strength / Section Modulus. The moment of inertia and section modulus can be determined based on the dimensions of the tube, while the yield strength is a material property that can be obtained from testing or reference tables.
Assuming both tubes are made of the same material, the 4x4 square tubing will be stronger due to its larger cross-sectional area. This means that it can withstand a greater bending force before deforming or breaking compared to the 3x3 square tubing.
The bending strength of square tubing can be affected by several factors, including the material properties, dimensions of the tube, and the type of bending force applied. Other factors such as the presence of any defects or imperfections in the tube can also impact its bending strength.