The steps of RCC lintel design single span or continuous with a few openings are same as the design of a simple beam. Concrete lintels are available in a range of lengths including: mm, mm, mm, mm, mm and mm. Prestressed concrete Lintels may be cut using a high speed diamond cutting disc. Under no circumstances should the Ultra-Fire Range of Lintels be cut down in size. When drilling into a concrete lintel, you should start with the smallest drill bit for masonry you have in your set.
A drill bit of 3mm is a good place to start, and you can then work up from there to get the size of hole you need. When it comes to concrete, the smaller the drill bit, the easier it will penetrate…. The top door frame should not ever bear loads. Internal walls in a double brick house are normally single skin, and may or may not bear some of the roof load.
You would usually have a lintel bar above the opening…. The bar is in the centre to enable the lintel to work upright or on its side. Upright would be stronger but horizontal would be strong enough for this application. If a steel lintel starts to thin because of pitting rust that starts to eat away at the metal there is a possibility a lintel can fail. Step cracking around the mortar joints of the window or door that the lintel is supporting can be a sign the lintel has failed or is starting to See Figure 3 Below.
You may also note some cracking window panes which can be a sign the window is bearing structural weight. For a failed stone lintel the signs via mortar cracking can be similar however you may note a crack on the stone itself.
Fixing these broken lintels can be expensive as it requires removing several layers of bricks, removing the old lintel and replacing with a new one. That is why keeping up with maintenance and detecting issues early can be key to saving yourself some cash down the road.
As always, if you have any questions on this or any other blog post, please feel free to reach out to us at info homeinspectiongeeks. We provide Inspection services to the Chicago Metro Area. What is lintel in architecture? What is the function of lintel? What does lintel mean? What is the difference between a girder and lintel?
What is difference between lintel and beam? Is lintel a beam? Is a lintel the same as a header? What is the difference between a header and a beam? What is the purpose of a header in construction? What is the purpose of a header? What is a sill in construction? How many jack studs go under a header? Are jack studs necessary? How long is a jack stud? What is a cripple stud? What stud is on the bottom of the wall? What are common studs? Does a double top plate mean load bearing?
Why do you need a double top plate for framing? Aside from carrying the load from above, contrary to its name, headers can also be placed under openings to distribute the weight from below as well to maintain the integrity of the building.
Headers are also commonly supported by a king stud or a jack stud. Difference in function. Headers are usually used in construction to help with the support of either load-bearing or non-load-bearing walls.
When headers are installed, they will always have a part in maintaining the overall health and structural integrity of a building. On the other hand, even though lintels function the same as headers and helps in supporting and balancing weight, they can also be used in architecture for aesthetic purposes.
Depending on the material used, lintels can be fully customized in their shape, length, and desired color. When an owner wants to make a statement, architects make use of lintels in a creative manner and place them in areas that can be easily seen, such as on top of columns. Depending on many factors such as the size of your building and how much weight it has to carry, you may opt to use or not to use them, but in essence, getting one or two installed is often recommended.
You can never go wrong with investing in additional support for your home or building as they help maintain the integrity of your home. If you want to determine whether you will need headers or lintels on your home, getting the opinion and recommendation of your trusted contractor would probably the best course of action. Headers can be customized depending on the preference and needs of the owner.
In some locations, headers must follow the required codes set by their local construction standards. Some of the most common headers are:. The materials that are commonly used for making headers are:.
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