CEE 366 - Wartman - Winter 2012 - Homework 3

CEE 366 - Wartman - Winter 2012 - Homework 3 - Homework 3...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Homework 3 Solutions Problem 1: The figure below shows the soil profile at the site of an existing warehouse (ie, covers a large area) that causes a surface loading of 2000 psf. Draw (but don't hand in) the σ v and σ v ' profiles with depth. What is the total and effective stress at 48ft (in pcf)? Figure is not to scale, but all important data is shown | | | | | | | | | | 2000psf v v v v v --------------- 0ft Fine Silty Sand γ t = 116 pcf γ d = 110 pcf --------------- 12ft (GWT starts here) Clay γ t = 119 pcf ---------------- 38ft Dense sand γ t = 121 pcf ----------------48ft (end of data) Solution: Stresses due to unit weights Above the water table: Incremental stress: σ = σ’ = γ d *Δz Below the water table Incremental stress: σ = γ sat *Δz σ’ = γ b *Δz Where γ b = γ sat – γ water Soil Type Depth (ft) Unit weight (pcf) Total Stress (psf) Effective Stress (psf) Fine Silty Sand 12 110 1320 1320 Clay 38 119 4414 2792 Dense Sand 48 121 5624 3378
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/31/2012 for the course CEE 366 taught by Professor Arduino,p during the Winter '08 term at University of Washington.

Page1 / 3

CEE 366 - Wartman - Winter 2012 - Homework 3 - Homework 3...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online