Simple Basement Egress 8 Reinforced Retaining Concrete Wall Design Drawing

Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance.

Simple basement egress 8 reinforced retaining concrete wall design drawing.

In this example the structural design of the three retaining wall components is performed by hand. In seismic zones 2 3 and 4 ubc requires fully reinforced construction. Walls generally concrete block basement walls are built without reinforcing steel. If such obstacles are present in your home plan a new route for any pathway that would have to be disturbed by the construction.

A sideways force against a basement wall puts one face of the wall in tension see figure 1 next page and concrete s tensile strength is much lower than its compressive strength. Building codes and retaining walls 5. Steel is required only if the soil exerts extreme lateral pressures loads are unusually heavy the basement is built more than 8 feet below grade or there s seismic risk. Structural design principles basement walls basement walls are designed as propped cantilevers in reinforced concrete the basement slab acting as the prop at base level.

Soil mechanics simplified 4. Forces on retaining walls 6. Even though no water table was found the walls will be designed for a water table 2 00m above. Designing a wall to prevent failure in bending requires a proper analysis of the soil loads and an appropriate structural design of the wall.

The walls are designed using parameters relevant to the london clay. Ce 437 537 spring 2011 retaining wall design example 1 8 design a reinforced concrete retaining wall for the following conditions. Earthquake seismic design 7. Designing a basement egress window.

The addition of the egress well complicates the design because obstacles outside of the foundation such as a walkway might inhibit a well s placement. Design procedure overview 3. Two equations are developed. F c 3000 psi fy 60 ksi natural soil development of structural design equations.

Aci e702 example problems buried concrete basement wall page 5 of 9 calculations references flexure and axial design vertical reinforcement at base of wall using section 14 4 design method walls designed as compression members based on preliminary investigation try 6 bars at an 8 inch spacing 6 8. Concrete strength al ൯ne for an 10 thick wall with 5 10 and 2 5 clear to strength steel will only reduce the nominal moment capacity of the secti對on from 136 68 to 135 66 inch kips 尩 if the concrete strength decreased from 3 5 to 3 0 ksi.