How do you calculate cement mortar in 230mm thick brick
I think you meant concrete pad not cement. A 6 in pad should work for you.
how many bags of cement for a pad 4x7x4 inches thick
As a guideline, 4 inches thick, but it would depend on what is going to be sitting on top of it. You may need thicker and/or to reinforce it with rebar.
Rubber cement can dry in 15 minutes if it is not a very thick coat. If it is a thick coat, it will take longer.
Use a curling wand instead of a curling iron. A wand should be about an inch thick and has no clip on it. You hand wrap your hair around it and just hold it there. Then, once you're done, split your curls (break them in two)!
"Hair curling tongs hold the hair in place while a section of it is getting curled. These are used for people with especially thick hair, and are effective when it comes to banana curling."
To make zinc oxide cement for dental use, mix zinc oxide powder with a liquid such as eugenol to form a thick paste. The mixture should be smooth and free of lumps before being applied to the tooth surface. Allow the cement to set and harden before any further dental work is done.
one yard of cement will make a 8 x 10 square foot slab at 4 inches thick, that's 80 sq. feet per yard of cement at 4 inches thick.
thick brick
1.85 cubic yards of cement.
One sixteenth of an inch