PSI - Issue 71

Varsha Harne et al. / Procedia Structural Integrity 71 (2025) 279–286

282

Table 1. Dimensions of Columns with Reinforcement Detail

Sr. No.

Type of Prototype

Characteristic

Column Name

Size (mm) 230X300 10-16 mm ⌀ Bars 230X500 18-16 mm ⌀ Bars 300X600 16-20 mm ⌀ Bars 230X300 10-20 mm ⌀ Bars 230X500 16-20 mm ⌀ Bars 300X600 20-25 mm ⌀ Bars 300X400 12-20 mm ⌀ Bars 300X600 16-20 mm ⌀ Bars 300X750 20-25 mm ⌀ Bars 300X400 12-25 mm ⌀ Bars 300X600 16-32 mm ⌀ Bars 300X750 24-32 mm ⌀ Bars Reinforcement Detailing

Cross-section

1)

Bare Frame Strong Beam, Weak Columns

R1

R2 R3 R1

- -

2)

Infilled Wall

Strong Beam, Weak Columns

R2 R3 R1 R2 R3 R1

- -

3)

Bare Frame Weak Beam, Strong Columns

- -

4)

Infilled Wall

Weak Beam, Strong Columns

R2 R3

- -

Table 2. Dimensions of Beams with Reinforcement Detail

Type of Prototype

Sr. No.

Characteristic

Beam Name

Size (mm)

Reinforcement Detailing

Top Bottom Straight Bars Extra Bars Straight Bars Extra Bars SB1 300X500 2-10 mm ⌀ 3-12 mm ⌀ 2-10 mm ⌀ 3-12 mm ⌀ SB2 300X500 2-10 mm ⌀ 4-12 mm ⌀ 2-10 mm ⌀ 4-12 mm ⌀ SB1 300X500 2-12 mm ⌀ 2-16 mm ⌀ 2-12 mm ⌀ 2-16 mm ⌀ SB2 300X500 2-12 mm ⌀ 3-16 mm ⌀ 3-12 mm ⌀ 2-16 mm ⌀ SB1 300X400 3-12 mm ⌀ 3-20 mm ⌀ 3-16 mm ⌀ 2-16 mm ⌀ SB2 300X400 3-12 mm ⌀ 4-20 mm ⌀ 4-16 mm ⌀ 3-16 mm ⌀ SB1 300X400 2-12 mm ⌀ 3-16 mm ⌀ 3-12 mm ⌀ 2-16 mm ⌀ SB2 300X600 2-12 mm ⌀ 4-16 mm ⌀ 3-12 mm ⌀ 2-16 mm ⌀

1)

Bare Frame Infilled Wall Bare Frame Infilled Wall

Strong Beam, Weak Columns Strong Beam, Weak Columns Weak Beam, Strong Columns Weak Beam, Strong Columns

2)

3)

4)

Fig. 2. Typical cross-section of beam (SB1) for Prototype 1. Clause 7.9.2.2 (IS: 1893 – 2016): - The following principles must be followed while modelling URM infill walls with diagonal struts: The modulus of elasticity E m (in MPa) of the masonry infill wall shall be taken as, E m = 550 x f m , where f m is the compressive strength of the masonry prism (in MPa) obtained as per IS 1905 or given by the expression: