Columns foundations need strengthening in the case of applying additional loads. Widening and strengthening of existing foundations may be carried out by constructing a concrete jacket to the existing footings. The new jacket hould be properly anchored to the existing footing and column neck in order o guarantee proper transfer of loads. The size of(…)
Strengthening of Structure
STRENGTHENING OF R.C.WALLS
The dimensions of the wall and its reinforcement are in creased by the following steps: 1. Roughing the total area of the concrete surface. 2. Installing steel connectors for the whole surface at 25-30cm spaces in both directions. The diameter of the steel connectors is determined according to the design and their depth should be(…)
STRENGTHENING OF R.C.COLUMNS
Strengthening of reinforced concrete columns is needed when: 1. The load carried by the column is increased due to either increasing the number of floors or due to mistakes in the design. 2. The compressive strength of the concrete or the percent and type of reinforcement are not according to the codes’ requirements. 3. The(…)
STRENGTHENING OF R.C.BEAMS
Reinforced concrete beams need strengthening when the existing steel bars in the beam are unsafe or insufficient, or when the loads applied to the beam are increased. In such cases, there are different solutions that could be followed: I-ADDING REINFORCEMENT STEEL BARS TO THE MAIN STEEL WITHOUT INCREASING THE BEAM’S CROSS SECTIONAL AREA This solution(…)
STRENGTHENING TECHNIQUES- R.C. SLAB
Many strengthening techniques are available depending on the purpose needed from strengthening. Some of those techniques are explained in details in the following sections. Why do we strengthen or retrofit buildings? Increase in the applied loads. Mistakes or unsafe design. R.steel corrosion or insufficient number of bars Cracks in concrete or stress less than design(…)