Multi Lake Tower is a prominent 16-story high-rise building situated in Multi Gardens B-17, Islamabad, which was constructed by Emirates builders. Given the suboptimal quality control measures during the construction process, the client sought the expertise of Prime Design Consultant to conduct a comprehensive structural health assessment of the building. The main objective of this assessment was to identify any potential structural weaknesses in the building and suggest measures to reinforce it against potential damage.
The first step in the process involved conducting a series of destructive and non-destructive tests to evaluate the concrete strength used in various structural members. These tests were aimed at providing a probabilistic estimate of the concrete strength and verifying the As-built construction in comparison to the structural drawings. After careful analysis, it was discovered that the building’s concrete strength was lower than what was specified in the structural drawings, making it susceptible to damage in the event of an earthquake.
To ensure the safety of the occupants, retrofitting of the columns and slabs was recommended. The primary goal of retrofitting was to increase the strength of the columns and slabs to make them more resistant against the gravity and earthquake demand. Most columns were retrofitted using the concrete jacketing technique. Concrete jacketing involves the application of a new layer of concrete to the column, increasing its load-carrying capacity. In some cases, where space was limited, the CFRP wrapping technique was utilized to retrofit the columns. This technique involves wrapping the column with carbon fiber sheets to increase its strength.

The Cecil Silver Apartment is a ten-story reinforced concrete edifice situated in Kalam, Pakistan, an area known for its high seismic activity and hilly terrain. Mr. Aizaz Ahmad, the client, engaged the services of Prime Design Consultant to devise an optimized and feasible structural plan for the building. In response, Prime Design Consultant undertook an earthquake-resistant design approach for the structure, along with a practical foundation design suitable for the challenging hilly slope.