TYPES OF TRUSS | ARCHITECTURAL CONSTRUCTION

USE AND PRACTICAL APPLICATION

1. TYPES OF TRUSS AND MATERIALS SUBHADIP MONDAL SOUKTIK BHATTACHERJEE KETAN SHING ANIRUDTH RATHI NAINEEK CHANDRA SOUMO SARKAR ROOF STRUCTURES WITH METERIAL ANALYSIS

2. TRUSS Members of a typical bridge truss Members of a typical roof truss MATERIALS – in general we use structural steel or mild steel of various grades and different sections The steel grades with yield strengths of 250 N/ sq mm and 350 N/ sq mm are generally used for structural members. The higher strength steel with yield strength around 450 N/ sq mm is now being used more and more in the construction. DISADVANTAGES *Maintenance cost *Fire proofing cost *Fatigue *Brittle fracture

3. CASE STUDY ROOF TRUSS – 1.KING POST TRUSS 2.HOWE TRUSS 3. PRATT TRUSS 4. FINK TRUSS

4. ROOF TRUSS KING POST TRUSS King post truss at pedestrian bridge at Waria railway station , west Bengal , India MATERIALS Top chords Angle 90 (structural steel thickness – 6mm) Bottom chord Angle 90 (structural steel thickness – 10mm) King post Angle 90 (structural steel thickness – 10mm) Metal gussets Steel plate (structural steel thickness – 15mm)

5. ROOF TRUSS HOWE TRUSS KALYAN INDUSTRIES, DURGAPUR , west Bengal , India MATERIALS Top chords Angle 90 (structural steel thickness – 6mm) Bottom chord Angle 90 (structural steel thickness – 10mm) King post and truss web Angle 90 (structural steel thickness – 10mm) Metal gussets Steel plate (structural steel thickness – 15mm)

6. ROOF TRUSS PRATT TRUSS DUTTA NISSAN FACTORY, DURGAPUR , west Bengal , India MATERIALS Top chords Angle 90 (structural steel thickness – 6mm) Bottom chord Angle 90 (structural steel thickness – 10mm) King post and truss web Angle 90 (structural steel thickness – 10mm) Metal gussets Steel plate (structural steel thickness – 15mm)

7. ROOF TRUSS FINK TRUSS DURGAPUR STEEL PLANT – SECTION MILL SITE , west Bengal , India MATERIALS Top chords Angle 90 (structural steel thickness – 6mm) Bottom chord Angle 90 (structural steel thickness – 10mm) Truss web Angle 90 (structural steel thickness – 10mm)

8. STRUCTURAL STEEL (THAT ARE USED IN CONSTRUCTION) ANGLE 90 CROSSECTION Legs – 90 mm Thickness – 6mm Unit weight – 8.2kg/m CROSSECTION Legs – 90 mm Thickness – 8mm Unit weight – 10.8kg/m MEDIUM BEAMS CROSSECTION Width – 250 mm Flange – 125mm Web- 6.9mm Unit weight -37.3kg/m CROSSECTION Width – 300 mm Flange – 140mm Web- 7.7mm Unit weight -46kg/m WIDE PARRAEL BEAMS CROSSECTION Width –148mm Flange – 160mm Web- 4.5mm Unit weight -23.83kg/m CROSSECTION Width – 152 mm Flange – 160mm Web- 6mm Unit weight -30.44kg/m CROSSECTION Width – 180 mm Flange – 166mm Web- 14mm Unit weight -76.33kg/m NARROW PARALLEL BEAMS CROSSECTION Width – 100 mm Flange – 55mm Web- 4.1mm Unit weight -8.1kg/m CROSSECTION Width – 200 mm Flange – 100mm Web- 5.8mm Unit weight -22.36kg/m CROSSECTION Width – 250 mm Flange – 125mm Web- 6mm Unit weight -30.11kg/m MEDIUM CHANNEL CROSSECTION Width – 300 mm Flange – 90mm Web- 7.3mm Unit weight -36.3kg/m

9. CONCLUSION THANK YOU As we have studied steel roof truss and the material of it WE CONCLUDE Tension members and compression members of the steel truss varies with respect to their load on it and the sections are different which lowers the economy .