Strengthing Reinforced Concrete Retaining Wall

The base is divided into two parts the heel and toe.

Strengthing reinforced concrete retaining wall.

This method is used for brick masonry as well as for stone masonry walls. These consists of a concrete or masonry wall of uniform thickness vertical wall reinforcing and transverse footing reinforcing are all designed for the lateral shear and cantilever bending movement plus the vertical weights of the wall footing and earth fills. Rebar is a very sturdy metal that is used inside concrete of buildings sidewalks and other structures to increase its strength. One is the check for an overturning moment and the other one is the check for sliding.

Strength of reinforced concrete sections amount of rebar a s the project calls for 5 10 and 5 12 are used. B short retaining walls vertical walls up to about 3m in height are usually built as shown in figure 1 b. Mortar joints between bricks are cleaned. Refer to figure a 4 for the mass or weight calculations.

Built in english bond the wall was supported on a mass concrete retaining wall. Reinforced concrete rc jackets technique for strengthening of masonry structure consists of application of jackets on one or both sides of masonry walls. When you use rebar as a bracing material for brick retaining walls it will effectively block any earth that is cascading toward it. The stem may have constant thickness along the length or may be tapered based on economic and construction criteria.

Material properties of reinforced concrete elements compressive strength of concrete at 28 days f. C 150 pcf minimum yield strength of reinforcing steel f. In cantilever retaining walls the concrete base or footing holds the vertical masonry wall in position and resists overturning and sliding caused by lateral soil loading. Reinforced concrete cantilever retaining walls consist of a relatively thin stem and a base slab.

For using reinforcement jackets first the plaster is removed from the walls. The brick wall was believed to be constructed from london stocks with a lime mortar and the strengthening scheme was therefore designed assuming a characteristic compressive strength of the masonry of 2 3n mm2. Strength reduced from 136 7 to 114 9 in kips. The weight of the retaining wall including the gravity loads within it plays a vital role in performing the stability check.

C 3 6 ksi 4 0 ksi for mse panels reinforced concrete unit weight γ. To prevent the collapse of masonry walls during earthquake it is advisable to use reinforced brick masonry walls in new construction. The heel is the part of the base under the backfill. Out of plane strengthening of partitions can be clubbed together with lateral strengthening of building by providing reinforced concrete jackets to the partitions.

Use rebar that is 12 inches taller than the wall is high. The addition of reinforcement to concrete masonry greatly increases the tensile strength and ductility of a wall providing higher load resistance.