What is the major design force for a ring beam in a circular water tank?

Special Designs The ring beam (girder) is subjected to compression, bending, and torsion due to the weight of the tank and contents and horizontal wind or seismic force.

What is the standard spacing between reinforcement bars used in a concrete slab?

The minimum spacing between the two bars can be about 50–75 mm. What Is The Maximum Bar Spacing In Reinforced Beams According To IS 456? Normally this spacing will be as mentioned below: For beams, these distances are 300 mm, 180 mm and 150 mm for grades of main reinforcement of Fe 250, Fe 415 and Fe 500, respectively.

What is the minimum distance for spacing in main reinforcement bars?

The minimum vertical distance between two main bars shall be The minimum spacing between the two bars can be about 50–75 mm.

Why do the cover of bars and the spacing of those bars affect required development lengths?

; if the bar spacing is increased (e.g. if only two instead of three bars are used), more concrete can resist horizontal splitting horizontal splitting. bar spacing of slabs and footings is greater than that of beams Thus less development length is required of beams. Thus less development length is required.

Why and where the maximum spacing is provided for shear reinforcement stirrups in beams?

Maximum Spacing of Vertical Stirrups in a rectangle beam is at its Midspan. It’s because the Shear force at the Midspan is very less and We use Vertical Stirrups to counter shear force. The spacing of Vertical Stirrups is minimum near the Supports due to Maximum shear force at the Supports.

What is the purpose of a ring beam?

Ring beams reinforce the building along its sides, sharing in the transmission of horizontal forces. They are usually placed under the ceiling structures. It is recommended to make a reinforcing ring beam under each ceiling structure, and another reinforcing ring beam under the roof structure.

What is the purpose of providing ring beam at the base of the roof dome of water tank?

Ring beam B3 connects the tank wall conical dome. The vertical load at the junction of the wall with conical dome is transferred to ring beam B3 by meriodional thrust in conical dome. The horizontal component of thrust cause hoop tension at the junction. Ring beam takes up this hoop tension.