Following picture shows the shuttering used for slabs.
This kind of steel shuttering is very useful as it reduces the plastering works. More over wooden logs are hard to remove and also cause breaking of edges. The steel shuttering when used with proper oiling is much easier to remove and also offers excellent finishing. All large projects use this kind of shuttering, only small house constructions are still using wooden planks and that too only in developing countries
If you have a query, you can ask a question here.
Yes,its useful for large slab area.
While removing they just drop it from that height due to heavy weight.
Any dent will reflect on the finished slab..hard to rectify.
Have few pro & cons.
Can i plaster a shuttered boundry wall and how do i prepare it.
I am civil engineer
I like this page for information