The negative reinforcement of the multi span beam is marked at one end of the beam, whether there is

In defining negative reinforcement.

1. When labeling unilaterally, you can select the inner edge line of the support 2. When labeling bilaterally, you can select the absence of support.

If there are different beams on both sides of the support, then the support is an end support relative to the beams on both sides. The negative reinforcement on the beam end only represents the original beam, so the negative reinforcement is only in the local span, and the other beam on the other side does not have it.

You can put the beam wide.

After adding it, set the length of the negative reinforcement of the plate. Set the callout length = 1 2 beam width + the length of the illustrated callout. Take the dimensions you provided as an example.

If the beam width is 300mm, the first negative reinforcement is arranged according to the plate edge arrangement, and the right mark is 1300mm; The left of the second negative reinforcement is marked as 1150+150=1300, and the right is marked as 150+1150=1300mm; The left of the third negative bar is marked as 1000 + 150 = 1150mm, and the right is marked as 150 + the size shown in the figure. In the properties section, you can select "Non-unilateral dimensions with supports" or "Unilateral dimensions position" to adjust the property values. Make adjustments according to your actual situation.

Seismic grade and concrete marking, and then in accordance with the drawing specifications required by the drawings to reinforce, pay attention to the position of the welding joint, the length of the anchorage, the length of the extension must be subtracted, try to use raw materials butt welding can save materials, the remaining can be used as additional reinforcement of the beam, not enough length can be butt welding. Budget: the span of the beam, whether it is seismic resistant, the seismic grade, the approximate load on the beam, whether the cantilever balcony, the type and number of tensile and compression ribs of the fixed beam, if the height of the beam is too high (more than 600, including 600), the torsion bar (waist bar) can be prepared, and the beam height minus the protective layer (5 cm) is calculated from the main reinforcement.

Summary. When the elevation of the top of the beam is different, the middle support bar can not be pulled through, and it should be anchored in the support, so it should be marked on both sides. 2. When the negative reinforcement of the support is marked on one side, it means that the reinforcement on the other side is also the same.

If one end of the negative reinforcement of the beam support is marked and one is not marked, does it mean that both sides are the same?

When the elevation of the top of the beam is different, the middle support bar can not be pulled through, and it should be anchored in the support, so it should be marked on both sides. 2. When the negative reinforcement of the bearing is marked on one side, it means that the reinforcement on the other side is also the same.

Negative reinforcement A and B like the one in the figure must be the same, and is this position D the same?

I can't see your**, and if you don't understand either, call a professional to help you get it.

Summary. 1. You have to understand what it is called, the negative reinforcement of the plate, its full name is the negative moment reinforcement of the reinforced concrete plate, which is configured in the upper position of the plate.

1. You have to understand what it is called, the negative reinforcement of the plate, its full name is the negative moment reinforcement of the reinforced concrete plate, which is configured in the upper position of the plate.

What I asked was that the negative reinforcement of the support of the beam was not a slab.

The layout of this building is a standard symmetrical structure (with the 13th axis as the axis of symmetry), so only the reinforcement of the left missing part of Yu Heng is marked, and the reinforcement of the right part is symmetrical with the left side.

Hello: It should be the middle bearing negative reinforcement Kai burning. It's the same as picking out Sun Pidu in Changzhen on the left, it's not Tongchang. If the description is the right span pull-through is the length, the drawing description is the right pull-through.

This small span is only one-third of the net span, not only thirty or forty centimeters long.

Yes. If you don't understand the drawings, it's best to ask the designer.

What is the use of thirty or forty centimeters.

The designer designed it, and the one that was kept, can only ask the designer.

Answer: From the bending moment diagram of the beam, the net span value of the beam is divided into 3 equal parts, and the force at the middle 1 3 of the upper part of the beam is the smallest. For example, 1 3 places in the middle of the limb hoop are reinforced with the support, it is a great waste, and the actual length steel bar is in the middle of the upper part of the beam 1 3 places, and the same reinforcement and support are also a great waste.

Because one of the main design bases of 11G101-1 is GB50010-2010. So let's look at 11g101-1, p. 27, 4The arrangement of the upper beam through the rib or the erection bar (the bar can be lap jointed, mechanically connected or welded steel bar of the same or different diameters) ,...

If you notice the two versions of 03G101-1, the revised version has more brackets in the revised version. It has been proved that there are many designers who put forward the principle of force and waste. Modifications.