Slab reinforcement in In the Building Design Suite is based on of AEC|BOLT, the reinforcement of slabs is accomplished through the generation of three design rectangles:i)
Reinforcement Intensity Rectangle (yellow)
...
...
Rebar Distribution Rectangle (white)
...
...
Rebar Length Rectangle (dark blue)
...
1
...
.Reinforcement Intensity Rectangle on Columns
Reinforcement The calculation of reinforcement demand is calculated according to determined based on the reinforcement intensity rectangle. To find determine the width of the yellow intensity rectangle in a certain specific direction,
...
Measure the linear center-to-center distance of between the columns connected with stress lines in the desired direction.
Measure the linear center-to-center distance of between the columns connected with stress lines in the adjacent directions.
25% of the shortest distance is the distance The distance between the center of the column and the yellow rectangle in the desired direction is 25% of the shortest distance measured.
...
For example ;
Min (166.125”,281”,315.50”) = 166.125”
0.25*(166.125”) = 41.53125”
...
→ Average intensity = 4.4365/6.5729=0.67496
Rebar decision
Column Strip Top Rebar Decision
Rebar diameter and spacing is being decided from table according to the determined intensity.
...
Note : Column top rebar can not be less than minimum required rebar.
Middle Strip Top Rebar Decision
...
Reinforcement intensity for the span between two columns is the maximum strip value between the intensity rectangles of two columns.
...
Note : Maximum Rebar Spacing = min(2*Slab Thickness , 18”)
2) Rebar Distribution Rectangle
Top slab reinforcement is being distributed in certain areas. Distribution rectangle indicates in which area the reinforcement will be distributed. And the number of rebar is calculated according to this rectangle.
...
→ Number of rebar is not specified for middle strip.
Reinforcement Condition of Columns Linked by Beams
In cases where beam and column are connected, the aim is to meet the reinforcement needs in the direction parellel to the beam from the beam reinforcement. The method we set is as follows;
...
→ Reinforcement perpendicular to beam direction is required in both conditions.
Kalan kısmı eklenecek
3) Rebar Length Rectangle
Rebar length is equal to navy blue rectangle width of desired direction.
Column Top Rebar Length
...
Navy blue rectangle is drawn as follows ;
...
Note : If slab edge is rotated, 0.3*measured maximum distance must be equal or greater than the distance from column face to slab edge.
...
Middle Strip Reinforcement Length
...
Middle strip reinforcements are generated between columns connected with stresslines.For example, determining the reinforcement length of the middle strip region indicated with white circle is as follows;
...
→ Reinforcement length will be shorter than two times of calculated value.
Merge Column Reinforcements
2 Columns Combine
If navy blue (length) rectangles of two columns intersect, column rebars must be merged.
...
3 Columns Combine
...
If three navy blue (length) rectangles of columns intersect, determine the critical rebar. Then measure the longest width of length rectangles and place the reinforcement. The number of reinforcement is not specified but the direction of the reinforcement must be specified in the drawing.
...
Merge Middle Strip Reinforcements
...
If two or more middle strip rectangles intersect, user must merge reinforcements manually.
...