Quade999
Civil/Environmental
- May 29, 2020
- 61
Hi Everyone,
When calculating the development length of straight reinforcing bars, it is based off the center to center spacing of bars being developed. If I have a slab where the spacing of bars is variable (i.e. tight spacing near the ends, and wider spacing near the middle), how is the calculation effected? Would I consider it from a standpoint of each individual bar and calculate it based off the distance to the bars beside it, or would I look at the worst case spacing as a whole group? If it was for a beam, I would consider the worst case as there wouldn't be many bars, but since a slab would be very wide I would think it would be acceptable to calculate it based of the bars in the section under consideration (i.e. longer development lengths at the ends with tighter spacing, and shorter development lengths at the middle with wider spacing as shown in my sketch).
Thanks
When calculating the development length of straight reinforcing bars, it is based off the center to center spacing of bars being developed. If I have a slab where the spacing of bars is variable (i.e. tight spacing near the ends, and wider spacing near the middle), how is the calculation effected? Would I consider it from a standpoint of each individual bar and calculate it based off the distance to the bars beside it, or would I look at the worst case spacing as a whole group? If it was for a beam, I would consider the worst case as there wouldn't be many bars, but since a slab would be very wide I would think it would be acceptable to calculate it based of the bars in the section under consideration (i.e. longer development lengths at the ends with tighter spacing, and shorter development lengths at the middle with wider spacing as shown in my sketch).
Thanks
