INSTRUCTIONS:

Design a cantilever retaining wall by:

Part $1$: Proportion the wall. $(10$ marks$)$

Part $2$: Assess the stability of the wall. $(25$ marks$)$

Part $4$: Provide a detailed drawing of the retaining wall. $(15$ marks$)$

SCOPE

A modern residential property is being proposed in Stoney Hill that requires the design of a cantilever retaining wall.

The wall should support $9$ feet of soil and the lead engineers design recommend the wall should be anchored $3ft$ below grade.

To complete the design please to read the data sheet given:

Description Data

The unit weight of backfill $120$ pcf

The unit weight of concrete $,150pcf$

The coefficient of friction between concrete and soil $0\mathrm{.}55$

Allowable soil bearing capacity $5\mathrm{.}12ksf$

Wall concrete strength $3$ksi

Grade $60$ steel

Recommendation by Assessing Engineer:

Base Thickness $=\frac{H}{10}$

Base Length $=2\frac{H}{3}$

Length of Toe$=\frac{H}{8}$

Stem Thickness $=\frac{H}{6}$

Top of the Stem $=1\mathrm{.}5$ foot $($The vertical side of the wall should be the bearing face$)$

Submission Requirements

Drawings

a$.$ Wall dimensions should be clear and available for building purposes.

Calculation $s$

a$.$ Submitted in PDF format JohnBrown$\_$DA$2$

b$.$ Clear and readable