Hi: We have designed a porous asphalt pavement parking lot with 3-ft +/- thick stone reservoir beneath. We have had several constructed projects constructed with clean No. 2 virgin stone aggregate and they have worked and held up well. We have had a contractor propose to use recycled concrete...
Hi. I am a civil/env enr by day, but evenings & weekends am renovating 140-yr old house (my home). A structural PE that I hire as my struct sub at work, designed following solution for me to open up one side of stairway.
House is balloon-frame. Studs on west side of stairway carry stairways of...
