There are six main types of structures: frame, shell, arch, mix-and-match, mass, and suspension. Frame structures are composed of long elements joined at the ends. Shell structures have a thin outer layer surrounding an empty or filled volume. Arches can be semicircular and were commonly made of stone in Roman times. Mix-and-match structures combine different structural elements. Mass structures are thick and made of clumped materials. Suspension structures hold beams from tall columns using cables.

1. STRUCTURES

2. A structure is a group of elements somehow united to support a load with stability There are 6 types of structures.

3. Frame Structures

4. Shell Structures

5. Arch

6. Mix and Match

7. Mass Structures

8. Suspension Structures

9. FRAME STRUCTURES Is the most common choice of structure.

10. These structures are composed of long elements joined to each other at the ends.

11. SHELL STRUCTURES Shell structures are made out of a thin outer layer of material that surrounds a volume.

12. That volume can be empty space or can be filled with something that has no structural relevance.

13. ARCH There are many types,but the semicircular Arch,which was the Roman arch,still remains the most used.

14. In Roman times,they were made of stone.