What should be the thickness of the wall inside the pit and is it possible that the pit wall may collapse if the thickness is less?
Related Questions
- What should be the thickness of the wall inside the pit and is it possible that the pit wall may collapse if the thickness is less?
- How does the operator measure the thickness of a wall plus all the layers of plaster added over the years?
- Is it possible that the insects may come outside the pit wall through its pores?
