Retaining Wall Engineering Design
Soil bearing and stability 8.
Retaining wall engineering design. Bidding contractors estimate the materials labor and final engineering costs. The design involves the determination of following parameters. Sketches of the retaining wall forces should be considered to properly distinguish the different forces acting on our retaining wall as tackled in the previous article retaining wall. Forces on retaining walls 6.
Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider. Soil mechanics simplified 4. If you have your retaining wall built figure about 15 per square face foot for a timber wall 20 for an interlocking block system or poured concrete and 25 for a natural stone wall. To determine if an engineering plan is needed for your retaining wall project take the time to evaluate the following.
Engineering design for retaining walls gives a detailed direction for the works and gives us the builder a clear plan which has been mathematically calculated to suit your retaining needs. For level top surface the base width of wall is determined in the same way as the cantilever type retaining wall. A registered engineer should be engaged to design retaining walls of any height that are part of a terraced slope or that include sloping grades either behind the wall or in front of it or walls that are adjacent to other building structures. Counterfort type retaining walls are more economical when height of wall is equal to 6 m.
Design procedure overview 3. How tall is your wall. Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance. In such a case the specifier provides the retaining wall product type location layout grading and soils information.
Alternatively specifiers often require the wall engineering plans to be provided as part of the retaining wall construction package design build. Preparing a troublesome site one that includes clay soil or a natural spring for example can raise costs substantially. Earthquake seismic design 7. Engineering designs are usually the first point of call for a job and have a strong influence on the overall scope and cost of the job so it is important.
Building codes and retaining walls 5.