The concealed column stirrup has internal bending angle, which is not allowed.
The reinforcement on the upper part of the beam adopts binding joints, but the stirrups are not densified at the joint position.
Common wall errors 1.
The top side columns are not set with bending.
It is strictly forbidden to make holes in the beam, but it is inevitable to make holes in the beam.
The horizontal reinforcement outside the outer wall shall be located in the area of one third of the span or one quarter of the wall height, and the inner side of the outer wall shall be located near the support and support.
7.
The horizontal reinforcement of the wall (outer side and inner side) is overlapped at the same position, and the joint is not staggered according to the joint percentage.
5.
8.
The remedial measure is to strengthen the hole.
According to the specification, the vertical reinforcement outside the outer wall should be located in the middle third of the wall height, and the vertical longitudinal reinforcement inside the outer wall should be located in the quarter of the root of the wall height.
7.
The bending inner diameter of the upper longitudinal bar of the roof beam does not meet the specification, and the specification requirement is >6d.
4.
4.
The column beam joint is the core node and the key node for earthquake resistance.
The outer side of the outer wall is in direct contact with soil and water, and the protective layer is not less than 40mm.
When the number of upper and lower reinforcements of the column changes, the length of the vertical reinforcement is not adjusted in the lower layer, resulting in the joint failure to stagger.
3.
The anchorage length of the lower longitudinal bar of the non torsional non frame beam extending into the support is 12D, which is completely unnecessary waste.
3.
11g101 stipulates that when overlapping outside the column is adopted, the outer side of the column may not be bent, but the reinforcement inside the column is required to be bent when the beam height is less than the anchorage.
The reinforcement of beam support, including the negative reinforcement of the first row of support, extending into the support is l0/4 (design problem).
The top middle column is bent.
2.
6.
The beam tie bars are missed or inclined, and some are not bound, which cannot play the role of tie bars.
First raise the beam, fix it with steel pipe support, and then drop the beam after the upper and lower reinforcement of the beam, including the waist reinforcement, are all tied.
9.
The horizontal bar joint of the wall is not set at the place with the minimum stress.
One end can be processed to 90 ° first, and then bent to 135 ° with a wrench after binding.
The hanging bar is constructed according to the height of the secondary beam, which should be constructed according to the height of the main beam.
If the horizontal bar of the wall is not pulled, or the length of the tie bar is wrong.
The lap length of the longitudinal reinforcement of the wall is too long, which is directly based on the height of the wall.
9.
The length of the longitudinal reinforcement of the column is not staggered, which is the problem of reinforcement proofing.
The full-length reinforcement of the bottom plate is not bound into a parallel straight line, resulting in different numbers of reinforcement in the same section.
2.
3.
Alternatively, the full-length reinforcement on the horse stool uses the longitudinal reinforcement in the same direction on the upper part of the raft.
6.
Of course, both ends of the hook are processed to 135 °, which is not easy to put.
7.
The practice of beam cushion block is wrong, and the cushion block is crushed due to insufficient strength, resulting in the beam directly contacting with the formwork, and there is no doubt that the reinforcement is exposed; Some are directly supported on the plate with horizontal bars.
13.
The beam bottom reinforcement is generally not bound.
The edge banding structure of the raft did not comply with the specifications and design, and the bending length of the upper and lower longitudinal bars of the raft was set without authorization.
It is better to place less longitudinal bars than to omit stirrups in the beam column joint.
Connect the pile reinforcement together.
During construction, it is not vertical but oblique.
If you change the direction, each row of horse stool can save a full-length reinforcement for fixing.
4.
Common mistakes of beam 1.
The top formwork of the outer reinforcement of the outer wall has no protective layer, and the exposed reinforcement of the outer reinforcement of the outer wall has serious consequences, which eventually destroys the entire outer wall.
Some concealed columns are very long, and the concealed stirrups are U-shaped.
The position of the second row of reinforcement of the beam is wrong, and the distance from the beam top is too large to play a stress role.
The beam joint is not set at the place with small stress (the upper longitudinal reinforcement is one-third of the mid span area), but at the place with the maximum stress.
The bending of the longitudinal reinforcement of the outer wall is reduced by the wall thickness.
The stirrup of column beam node is not set or the spacing is too large.
The binding of wall tie bars is not standard, either the spacing is wrong or the practice is wrong.
3.
The raft longitudinal reinforcement joint is set in the post cast strip (the longitudinal reinforcement joint should not be set in the post cast strip).
10.
5.
If not binding, the beam reinforcement is tangled together, affecting its stress.
According to the specification, transverse stirrups are set at the joint position with a spacing of min (5d, 100), which is actually difficult to achieve.
Common mistakes of columns 1.
Some of the upper reinforcement of the beam is set at or near the beam support.
Not binding belongs to cutting corners.
The length of the longitudinal reinforcement joint of the bottom plate is too long, more than one lap length, and some are too short to meet the length required by the specification.
4.
8.
5.
If the longitudinal reinforcement of the top middle column meets the straight anchor in the beam, it does not need to be bent.
This is a simple construction process.
The reserved length of raft reinforcement joints at the construction joints is not enough, and the joints are not staggered.
The angle formed by the intersection or anchorage of two stirrups does not belong to the internal folding angle.
2.
I don’t know what the construction basis is, but I still take it for granted.
At the junction of primary and secondary beams, additional stirrups are added on both sides of the main beam.
The general description of the structure does not indicate whether the roof is a simple support or an elastic embedded support of the outer wall, and the construction is not carried out according to it.
No reinforcement is arranged around the beam opening.
Common mistakes of foundation 1.
6.
6.
The position of the foundation beam joint is wrong.
11.
If it is done according to the specification, it will almost become fully densified..
When the wall is capped, the vertical reinforcement of the wall should be minus the reserved length below and then the lap length.
The raft has a large area, but the joint percentage is still 50%, and the joint percentage is not 25%, resulting in the waste of reinforcement joints.
The column protective layer does not meet the minimum protective layer thickness.
8.
5.
It is set according to the position of the floor frame beam joint, and it is not staggered (the stress of the foundation beam and the frame beam is exactly the opposite, and the joint is the same).
The excuse of the worker is that it can’t be tied.
12.
The main beam is not arranged with normal stirrups at the secondary beam position, and three additional stirrups are directly arranged.
The joint position of the vertical reinforcement of the outer wall of the basement is wrong.
The reinforcement joints should be closed stirrups, which can save reinforcement.
The densification of columns without basement is from h0/3 above plus or minus zero, which should be calculated from the top surface of the foundation.
The foundation horse stool is placed incorrectly.
2.
One end of the beam hook is 90 °, and the other end is 135 °, which should be 135 °.
The cushion cap is not reduced according to the specification, and the design “optimization” is reduced according to the independent foundation structure, which belongs to the design of Jerry building.
However, this is generally impossible.
In fact, it can be tied completely.
7.
