ᐅ Garage Construction – How Much Reinforcement Steel Is Needed in the U-Shaped Concrete Beam (Lintel)
Created on: 12 May 2020 09:46
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FreizeitmaurerF
Freizeitmaurer12 May 2020 09:46Hello,
I am currently planning my garage. Material: aerated concrete blocks, 24 cm (9.5 inches). Garage door width: 3.50 m (11.5 feet). Wall length: 5 m (16.5 feet).
Above the garage door, there will be a visible masonry section of 1 m (3.3 feet). Behind this is a flat roof. The beams will rest on the two side walls, not on a lintel. My question is: what kind of reinforcement mesh should be placed in the U-channels? I know a structural engineer needs to calculate this, but perhaps someone here has built something similar and can share their experience. No guarantees are expected. It’s not exactly a high-rise building. Thank you very much!
I am currently planning my garage. Material: aerated concrete blocks, 24 cm (9.5 inches). Garage door width: 3.50 m (11.5 feet). Wall length: 5 m (16.5 feet).
Above the garage door, there will be a visible masonry section of 1 m (3.3 feet). Behind this is a flat roof. The beams will rest on the two side walls, not on a lintel. My question is: what kind of reinforcement mesh should be placed in the U-channels? I know a structural engineer needs to calculate this, but perhaps someone here has built something similar and can share their experience. No guarantees are expected. It’s not exactly a high-rise building. Thank you very much!
Vicky Pedia16 May 2020 19:01The U-shaped formwork serves as the ring beam. It holds everything together. There are prefabricated steel mesh cages available for this purpose. That should be sufficient. Since this is a standard situation, standard reinforcing steel is also available.
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Freizeitmaurer22 May 2020 09:11Hello Vicky Pedia,
thank you for your response. In this case, the U-shaped lintel is not the ring beam. I need a lintel for my garage door, which is at a height of 2 m (6.5 ft). The ring beam is located on the two opposite walls that are 8 m (26 ft) long. The door is on the 5 m (16 ft) side. Above it are four courses (wall inner height + parapet) of aerated concrete blocks. There is no additional load, as the weight is carried by the other walls. OK, instead of U-shaped lintels, one can/should use formwork. That is the point. Someone must have experience with something like this before. It is meant only for information exchange and does not guarantee anything.
Thank you.
thank you for your response. In this case, the U-shaped lintel is not the ring beam. I need a lintel for my garage door, which is at a height of 2 m (6.5 ft). The ring beam is located on the two opposite walls that are 8 m (26 ft) long. The door is on the 5 m (16 ft) side. Above it are four courses (wall inner height + parapet) of aerated concrete blocks. There is no additional load, as the weight is carried by the other walls. OK, instead of U-shaped lintels, one can/should use formwork. That is the point. Someone must have experience with something like this before. It is meant only for information exchange and does not guarantee anything.
Thank you.
Hello Freizeitmaurer
If I understand you correctly, the "ring beam" is only resting on two walls. In that case, it’s not really a ring beam. As the name suggests, a ring beam is a continuous loop. Its purpose is to reinforce the walls so they cannot tip over. Ideally, you would design the ring beam (or bond beam) to also serve as the lintel for the garage door.
A clear span of 5 meters (16 feet) is quite substantial. If you don’t have a structural engineer, formwork it properly and build it fairly high, then insert plenty of reinforcing steel—16 mm (5/8 inch) bars. Pour the concrete in, and it should hold.
However, I’m just an amateur, and this is a layman’s explanation without any guarantee of accuracy.
Steven
If I understand you correctly, the "ring beam" is only resting on two walls. In that case, it’s not really a ring beam. As the name suggests, a ring beam is a continuous loop. Its purpose is to reinforce the walls so they cannot tip over. Ideally, you would design the ring beam (or bond beam) to also serve as the lintel for the garage door.
A clear span of 5 meters (16 feet) is quite substantial. If you don’t have a structural engineer, formwork it properly and build it fairly high, then insert plenty of reinforcing steel—16 mm (5/8 inch) bars. Pour the concrete in, and it should hold.
However, I’m just an amateur, and this is a layman’s explanation without any guarantee of accuracy.
Steven
Hello
This is not a standard situation, even though various 3.5m (11.5 ft) gate widths have already been spanned, and there are no standard steel supports for this either. The lintel probably also serves another purpose beyond just supporting the stones stacked above it. If you, as a DIY mason, cannot assess this yourself, you should consult a structural engineer.
Olli
This is not a standard situation, even though various 3.5m (11.5 ft) gate widths have already been spanned, and there are no standard steel supports for this either. The lintel probably also serves another purpose beyond just supporting the stones stacked above it. If you, as a DIY mason, cannot assess this yourself, you should consult a structural engineer.
Olli
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Freizeitmaurer23 May 2020 12:06Hello,
the idea about the ring beam was a misunderstanding. Okay, lesson learned. It’s true that this is not a standard situation. That’s why I wanted to exchange experiences with someone who might have already built something like this. Nothing more. In the past, people simply placed a double T beam across the wall opening and cast concrete around it.
That has stood for 40 years. Today, everyone just wants to make money. I don’t mind that either. But things should be kept reasonable. Some structural engineers charge way too much. I’m talking about a garage construction here, not a residential building. Thank you very much for your replies.
the idea about the ring beam was a misunderstanding. Okay, lesson learned. It’s true that this is not a standard situation. That’s why I wanted to exchange experiences with someone who might have already built something like this. Nothing more. In the past, people simply placed a double T beam across the wall opening and cast concrete around it.
That has stood for 40 years. Today, everyone just wants to make money. I don’t mind that either. But things should be kept reasonable. Some structural engineers charge way too much. I’m talking about a garage construction here, not a residential building. Thank you very much for your replies.
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