Concrete Block Retaining Wall Design Guide

Of leveling sand and half the height of the first course of blocks.
Concrete block retaining wall design guide. Geotextilea permeable polymeric material which may be woven non woven or knitted. Design procedure overview 3. These phases are explained briefly. Concrete block retaining wall construction consists of number of phases including excavation foundation soil preparation retaining wall base construction concrete block unit placement grouting and drainage system installation.
Building codes and retaining walls 5. How to build a concrete wall figure a. Soil mechanics simplified 4. Concrete masonry unitsconcrete blocks manufactured to provide an attractive durable stable face to a retaining wall.
They are commonly h or double u configuration. The geo mat is attached to the blocks with galvanized steel fixing. Concrete block design table you can use the concrete lego block retaining wall design table above as a guide. Of compacted base 1 in.
Reinforced earth walls can be built to 15 20m high and is a very economical solution to high retaining walls. Tall wall excavate a trench deep enough to accommodate 4 to 6 in. The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line. An information series from the national authority on concrete masonry technology ncma tek 15 8a 1 guide to segmental retaining walls introduction segmental retaining walls are modular block retaining walls used for vertical grade change applications.
The system consists. Excavation work for concrete block retaining walls. Soil bearing and stability 8. Forces on retaining walls 6.
The table gives you a number of wall heights and the number and size of blocks required for the height of the wall. The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block. Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on. Follow the block manufacturer s instructions for wall height limits.
Earthquake seismic design 7. Foundation all concrete block walls must rest on a sturdy foundation of poured concrete. It is commonly used to separate drainage material from other soil. Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance.