competent design of retaining walls can maximize land use and substantially increase property value. this article discusses the required steps in the design of either concrete or masonry un-piled cantilever retaining walls. our software asdip retain will be used to support the discussion.
reinforced concrete cantilever retaining walls are recommended for heights up to 7 m. this type of walls has vertical stem monolithic with the base. a slender section can be used in this retaining wall the tensile stresses within the stem and the base is resisted by steel reinforcement.
concrete: cdot concrete class d concrete compressive strength f'c = ksi concrete unit weight γc = kcf bridge rail type 7 type 7 bridge rail weight w rail = klf center of gravity from wall back face x c.g. = in. see bridge worksheet b-606-7a appendix a example 11 - cast-in-place concrete cantilever retaining wall 13.33
recommended stem designs for reinforced cantilever retaining walls with no surcharge are contained in tables 1 and 2 for allowable stress design and strength design, respectively. these design methods are discussed in detail in allowable stress design of concrete masonry, tek 14-7a, and strength design of concrete masonry, tek 14-4a refs. 5, 6 .
n cantilever retaining walls these walls cantilever vertically from the concrete footing and typically resist overturning by the mass of the soil/material on the heel of the footing figure 3. within these three categories a number of different and innovative concrete retaining wall types are available. some manufacturers offer technical
the addition of reinforcement to concrete masonry greatly increases the tensile strength and ductility of a wall, providing higher load resistance. 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.