12-07-2011, 06:15 AM
Dear All
Any one knows about Timber headings in Excavation of Cross Passages for tunneling (sandy soils).
any books & papers.
Thanks & Regards
RajuK
Any one knows about Timber headings in Excavation of Cross Passages for tunneling (sandy soils).
any books & papers.
Thanks & Regards
RajuK
Thanks & regards
Apple
Apple