The five different types of roof structures are:
The ARC ROOF is a fixed construction, based on three inward curved trusses that are mounted to side masts.
The TUNNEL ROOF is a fixed construction, based on inward curved trusses that make a complete arch.
The FLAT ROOF is a tower-based structure with a sloping roof, which is very easy to build.
The MPT ROOF is a tower-based structure with a pitched roof, which guarantees optimum strength.
The ST ROOF is a tower-based structure with a pitched roof, which guarantees optimum strength.
The GIANT ARC ROOF roof is a tower-based structure, constructed from 3 to 5 arches.
The LT ROOF is a tower-based structure with a pitched roof.