PSI - Issue 52

Rakesh Katam et al. / Procedia Structural Integrity 52 (2024) 72–88 Rakesh Katam/ Structural Integrity Procedia 00 (2019) 000 – 000

76

5

Construction

Ground floor- 1983, First & Second floors 2010

Present Usage

Residential

Structural Information Beam

230 mm X 425 mm 230 mm X 300 mm

Columns

Slab

125 mm

Foundation

2700 mm depth Yes, done in 2005

Maintenance History

3.2. Condition survey

The objective of the investigation is to gather enough information to understand the structure's problems as well as the degree and locations of the damage. In Fig. 4, dampness in the slab panels is shown. The dampness is present throughout the panels, except for a small area, and the locations of cracks in columns and beams are also shown. NDT is advised following the completion of the examination of the building.

Fig. 4. Condition mapping.

At the ground floor level, there is considerable cracking in every column at the bottom (1/3rd to half), varying in width from 2 to 4 mm. At the point where RCC meets brickwork and along the reinforcement in RCC structural components, cracks have been seen. Columns with poor concrete quality and insufficient steel support may develop parallel vertical cracks. When the concrete column was subjected to its full load, splitting cracks started to appear. If the concrete cross-section or reinforcing ratio is insufficient, the column's maximum load-carrying capacity is exceeded as shown in Fig. 5.