c1 Refereed Journal Article. kq 18/10/13,  ID 23665 duplicate deleted LL 13/3/14. Changed name from: Ng, Anne Wai Man to Ng, A. W. M  as requested by author (Anne) see email in LibShare, May 2014--MMM Blue in Sherpa: Author's Pre-print:   archiving status unclear 
Author's Post-print:   author can archive post-print (ie final draft post-refereeing) 
Publisher's Version/PDF:   archiving status unclear 
General Conditions: Publisher's version/PDF cannot be used, except on Intranet. Internet website or institutional repository. Must link to publisher version at ASCE Civil Engineering Database(http://cedb.asce.org) Publisher copyright and source must be acknowledged 
LL 8.7.14. Requested (Chris) Accepted v. & Permission, 6.8.14-MMM. Accepted v. received, still waiting for Permission, 11.8.14-MMM