/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: DavidDumaPrEng https://cdn.slidesharecdn.com/profile-photo-DavidDumaPrEng-48x48.jpg?cb=1619592031 I have 21 years post graduate experience in civil engineering project planning, design, construction & maitenance programming and project management. http://www.redeemedconsulting.com