I am trying to do pre-plaster inspection,who can recommend a good one for me?
Thanks

I just mean after the first stage-- concrete slab finished,how to check the concrete is good or not?
And who knows how height is the concret for H-D class?
Thanks

does any one know how high the H-D class concrete slab is? and how to check whether the concrete slab is good or not?

But they have different levels.
The standard is M level and then H,then H-D
so its reasonable to charge more than 17000 to build a H-D concrete slab?
But one of friends said…

Just have a urgent question:
What is the cost of your slab of H-D level of 23 squares?
The construction company will charge me more than 17,700.I think its too much.
Any…