Steel Truss Flashcards
refers to steel bar usually of 16mm or 20mm diameter rod attached at the center or end points of the span of the purlins
Sag rod
a plate, usually triangular in shape, use to connect two or more members, or to add strength to a framework
Gusset plate
a structural or rolled steel in C shape used in steel construction; mosty used on steel roofing frame as purlins
Channel
a brace or any piece of a frame which resists truss in the direction of its own length; may be upright, diagonal or horizontal
Strut
a short pi, of a malleable metal such as iron, steel copper with ah head at one end, used to unite two metal plates by passing it through a hole in both plates and then hammering down the point to form a second head
Rivet
a connection between two members which are riveted together
Riveted joints
a hole to which rivet is driven
Rivet hole
a gastight joint obtained by uniting metal parts, such as iron and steel that require welding
Welded joints
5 advantages of using welded connections
- minimal noise in the erection of the structure
- savings on labor and materials
- rigidity of frame
- easy to correct new work to existing structure and also its repair
- simplicity in design
the term used to indicate the depth from the original surface of the base metal to the point at which fusion ceases
Penetration
the failure of the weld metal and base metal to fuse at the root of the weld
Partial penetration
three classifications of welded joints
- butt joint
- tee joint
- lap joint
the structural members are welded on the shop before delivering at the site
Shop weld
welding is done during the erection of the structural members
Field welding
ion connecting two overlapping plates by means of welding, hooles are made in one of the two plates then plug and slot welds are made at the entire area of the hole or slot
Plug and shot welds
