What does the inverted triangle symbol in steel structure paper mean?

Indicates that the above data are elevation values. The unit should be meters.

In tekla, the symbols marking the surface, front view and side view of the component are corresponding.

The arrow indicates the direction, and the original drawing is the column butt joint drawing, which shows the lower end of the butt joint column, so that the column will not be reversed during field hoisting. Such a sign on the beam is also a direction indicator, and the upper and lower flanges of the beam hoisted according to the sign will not be reversed.

That triangle is the symbol of "welding mode", which is usually drawn at the end of a lead, indicating that the welding mode is "fillet welding". If the symbol is a small circle, it means welding around the workpiece.

Extended data:

There are three classification methods:

1, according to the relative position between the connected components, it can be divided into four types: flat welding, lap welding, T-connection and fillet welding.

2. According to the different weld structure, it can be divided into butt weld and fillet weld.

3. According to the spatial relative position of welds between weldments, it can be divided into flat welding, vertical welding, horizontal welding and overhead welding.

Weld forms are divided into butt weld, fillet weld, plug weld, groove weld and end weld.

Welding joints are divided into butt joint, T-joint, cross joint, lap joint, plug welding lap joint, groove welding joint, corner joint, end joint, sleeve joint, oblique butt joint, pressure joint and bottom lock joint, *** 12 kinds.

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