Why are main bars placed in the shorter span?
Table of Contents
- 1 Why are main bars placed in the shorter span?
- 2 What is the function of Main Bar and distribution bar?
- 3 In which slab main steel is provided along shorter span?
- 4 Why bent up bars are provided?
- 5 Why we provide bent up bars in beam?
- 6 Why we bend half of the slab bars to the top at the supports?
- 7 Why main reinforcement bar is provided at the shorter span direction?
- 8 What is the difference between Main and distribution bars in slab?
- 9 Where is the main reinforcement bar provided in a one way slab?
Why are main bars placed in the shorter span?
Main reinforcement bar is provided at the shorter span direction in order to transfer the bending moment developed at the bottom of the slab. The purpose of providing main bar is to transfer the bending load developed at the bottom of the slab to the beams.
What is the function of Main Bar and distribution bar?
Main Reinforcement Bars are used to transfer the bending moment developed at the bottom of the slab. Distribution Bars are used to hold the slabs on either way and to resist the cracks and shear stress developed at the top.
What is longer span and shorter span?
Long-span structures have traditionally been associated with buildings that require programmatic flexibility and must accommodate large influxes of people. Short-span structures provide a counterpoint where space and structure correspond one-to-one or in modules thereof.
In which slab main steel is provided along shorter span?
Difference between One Way Slab and Two way slab:
| One Way Slab | Two Way Slab |
|---|---|
| Main reinforcement is provided on shorter span due to bending | Main reinforcement is provided in both sides due to bending occurs on both sides |
Why bent up bars are provided?
Bent up bars are provided to counter the Shear force. As you seeing that towards the ends of the beam shear is increasing and bending moment is decreasing. We also know that longitudinal reinforcement is provided to counter the bending moment stress or flexural stress.
What does short span mean?
adj. 1 of little length; not long. 2 of little height; not tall. 3 of limited duration. 4 not meeting a requirement; deficient.
Why we provide bent up bars in beam?
Why we bend half of the slab bars to the top at the supports?
Cranked bars / Bent up bars are provided on top of the reinforcement to resist negative bending moment/Hogging at the supports of the slab. To resist the shear force at the supports. To reduce the risk of a brittle failure of slab-column connection.
What’s a time span?
DEFINITIONS1. the period of time between two events or during which an event continues. a timespan of ten to fifteen years.
Why main reinforcement bar is provided at the shorter span direction?
Main reinforcement bar is provided at the shorter span direction in order to transfer the bending moment developed at the bottom of the slab. The purpose of providing main bar is to transfer the bending load developed at the bottom of the slab to the beams.
What is the difference between Main and distribution bars in slab?
Main reinforcement bar is used to transfer the bending moment to beams. Distribution bars are used to resist the shear stress, and cracks developed at the top of the slab. Why Crank Bars Are provided In Slab?
What is the difference between main reinforcement and distribution bars?
For a one way slab, the slab is analysed as a beam of unit width , and the main reinforcement is provided parallel to the short span, while distribution bars are provided parallel to the long span. Minimum steel can be used as distribution bars.
Where is the main reinforcement bar provided in a one way slab?
1. Main reinforcement bar is provided at the bottom of the slab at the shorter direction. 2. Stronger dimension bar is used as main bar. In one way slab, the slab is supported by beams on the two opposite sides where main reinforcement bar is provided.