Nomenclature - Glossary of Terms
A steel member with an 'H' cross section.
Reinforcement bars used in distributing forces from the column foundation to the floor slab.
![Hair Pin](img/glos/05202052.png)
Horizontal and vertical pipes fixed to stair stringers, edges of mezzanine floors, openings in floors and platform walkways.
A large multi-leaf door that is used in aircraft hangars or similar buildings.
![Hangar Door](img/glos/05302053.png)
Intersection of the column and rafter. Also referred to as Knee.
A horizontal member over an opening in a wall.
![Header](img/glos/05402054.png)
Any bolt made from steel having a tensile strength in excess of 690 megapascal (MPa). Some examples are: ASTM A325, A354, A449 and A490.
A washer having non-parallel faces normally used on brace cables or rods. Also known as Bevel Washer.
![Hillside Washer](img/glos/05502055.png)
See Pinned Base.
A lifting device that is mechanically, electrically or manually operated.