ARCH3355_2013_04_16_Foundation_Design

Raab 3 42513 arm stem toe cantilever wall retaining

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Unformatted text preview: 4” ARCH3355 | Construction III | Spring 2013 FOUNDATION DESIGN | P. RAAB 3 4/25/13 arm / stem toe cantilever wall Retaining Walls: Basic Types shallow bearing deep foundations Retaining Walls: Common Types and Components [foundations / spread footings] [piles / piers] Counterfoot: May be added to cantilever type retaining walls when height exceeds 20’ high. compression in back fill top of footing construction joint gs] deep foundations [piles / piers] heel key gravity wall column load [P] arm / stem toe counterfoot stem toe anchored wall ground level upward soil pressure common terminology otings] deep foundations [piles / piers] cantilever wall heel key heel drainage key base slab, footing tension reinforcing tension in bottom of footing h counterfoot h/3 sheet piled wall FOUNDATION DESIGN | P. RAAB ARCH3355 | Construction III | Spring 2013 ARCH3355 | Construction III | Spring 2013 counterfoot FOUNDATION DESIGN | P. RAAB P=Wxh in tension reinforcing gravity wall tension in bottom of footing h counterfoot h/3 Retaining Walls: Sizing to Resist Loads Earth Pressure at any given point: counterfoot tension reinforcing tension in bottom of footing P=Wxh P = Co(W)(h) Co = coefficient of earth pressure W = weight of soil h = height of the retaining wall h counterfoot Formula is simplified: Co is eliminated + weight of soil is considered to be equivalent to a fluid weighing 30lb/ft3 h/3 P = 30(h) counterfoot Total Earth Pressure: Sum of earth pressure acting through the centroid of the triangle. P=Wxh P = W(h)(1/2)(h) à༎ P = ½(W)h2 Maximum Earth Pressure: P = W(h) ARCH3355 | Construction III | Spring 2013 FOUNDATION DESIGN | P. RAAB 4...
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