I am trying to design some manhole rehab liners. I have always used a design process from the American Concrete Pipe Assoc. The client wants me to use a 'buckling' formula from the CIPP ASTM F1216. What are any of you using?
Improving the battery life of our devices remains one of the tech industryâ€™s biggest challenges, and the most inefficient draw on power comes from the display, more specifically, the backlight that illuminates most displays. Download Now