Accounting for temperature changes in steel construction can make all the difference between a structure that lasts for decades and one that poses a danger to the safety of its occupants. This is because while steel is an incredibly durable and strong building material, it is also very susceptible to thermal expansion and contraction. Over time, if this thermal expansion and contraction are not accounted for, it may cause the steel to weaken and lead to structural failure. In this post, we take a closer look at what exactly thermal expansion joints are and why they are essential in steel construction.
What are Thermal Expansion Joints?
Thermal expansion joints are components that are specially designed to absorb the movement caused by temperature-induced expansion and contraction of steel structures. They create controlled gaps or flexible connections between various sections of the steel structure, enabling them to expand and contract without causing damage. They are usually made from materials such as rubber, stainless steel or sliding plates and can help to relieve internal stress within the structure.
Common Mistakes to Avoid with Thermal Expansion Joints
While thermal expansion joints are a must-have in any steel structure, there are many common mistakes people make that can impact their effectiveness. Some of these mistakes that you should avoid include:
Using the Wrong Materials
Thermal expansion joints can come in a variety of different materials that affect their properties, such as the temperature ranges that they can function effectively in and the environmental conditions that they can be exposed to. Thus, it is important to carefully consider the conditions that the thermal expansion joint will be subjected to and to choose a joint made from a material that is able to withstand these conditions.
Incorrect Sizing or Placement
At the same time, it is also important to choose a joint that is the right size. Under-sizing the joint gap can mean that there may not be enough space to accommodate expansion, causing the joint to buckle or crack under pressure. Incorrectly placed thermal expansion joints will also fail to relieve stress from the structure when needed. Ensure, therefore, that you place these joints strategically at regular intervals, especially in long spans or where movement is expected to be the greatest.
Get Your Steel from RW Steel
To ensure that your structure is able to withstand the stresses of thermal expansion and contraction, it is also important that you get your steel from a reliable supplier. This can give you the peace of mind knowing that your steel is of high quality and will be able to withstand anything that is thrown at it. RW Steel is the number one supplier of retaining wall steel in Melbourne, and we offer high-quality steel at great prices. Get a free quote from our website for the steel sections you need or contact us today to find out more about our products and services.
Image Source: Dumoulin & Associates