What is the eyebrows?

is a structural element used in construction. It is usually a straight rod with a hole or "eye" at both ends and is often made of metal. Other components can be attached to the eye on the holes at each end, and when the structure is designed, the eye cards are placed so that they are more filled than compressed. This means that the forces are pulling on the pole rather than pushing it, because the structural integrity of this bar relys on the towing forces rather than pushing or compressing forces.

is very often an eye bar or a metal beam that has a profile in the shape of I. The ends of the eye in this case can contain one opening on both or more; If the piece contains several holes, it is usually attached to another structural element by means of screws or rivets for added force. In other cases, eyebrows may have a rectangular profile rather than shape for structural rigidity and easy construction. A common place to see such a component is on certain types of volumes, especially lattice bridges.

The rod itself is usually uniform in thickness, although the length of the component may vary significantly according to its purpose. It can be secured at both ends and other components can be attached to the eye, anywhere after its length, even if the forces located on the bar will have to be carefully analyzed during construction to ensure that excess force is not located in such a way that the beam can fail. The rods are usually cooked for greater durability and are made of rough metals, most often steel. Sometimes the holes at each end are made slightly smaller than necessary and are selected in place for close.

Sometimes eye cards are connected to mutually to spread the load tolerated by the overall structure. This is sometimes known as the structure of the chain connection, because the joining of the eye panels is similar to the chain, like those found on wheels or motorcycles. End of each eye is often fromAoblen and the hole is open in the middle of the rounded end. Other eye panels may be attached to the first with a pin, screw or rivet; The size of the connecting component will vary depending on the size and function of the structure, as well as the size of the rod itself.