Design of Power Angle Steel Tower

Factory test:Tensile test,Elements analysis, Sharpy test(impact test), Cold Bending, Preece test, Hammer test

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Design

1. Design Code

ANSI/TIA-222-G/F

2. Design Wind Speed

Up to 250 km/h

3. Allowable deflection

0.5 degree @ operational speed

Structure Steel

High Tensile Steel

Mild Steel

4. Grade

GB1591: Q345B, Q345C,Q3455D

GB700: Q235B, Q235C,Q235D

EN10025: S355JR, S355J0, S355J2

EN10025: S235JR, S235J0, S235J2

ASTM A572 Gr50

ASTM A36

5. Tension strength (Mpa)

470~630 Mpa

360~510 Mpa

6. Yield strength (t≤16mm) (Mpa)

355 Mpa

235 Mpa

7. Elongation (%)

20

24

8. Sharpy V-notch Test

27J(20°C)

Q345B/S355JR

27(20°C)

Q235B/S235JR

27(0°C)

Q345C/S355J0/A572 Gr50

27(0°C)

Q235C/S235J0/A36

27(-20°C)

Q345D/S355J2

27(-20°C)

Q235D/S235J2

Bolts & Nuts

9. Grade

Grade 4.8, 6.8, 8.8

10. Standards for mechanical properties

10.1 Bolts

ISO 898-1

10.2 Nuts

ISO 898-2

10.3 Washers

ISO 6507-1

11. Standards for Dimensions

11.1 Bolts

DIN7990, DIN931, DIN933

11.2 Nuts

ISO4032, ISO4034

11.3 Washers

DIN7989, DIN127B, ISO7091

Marking

12. Method of marking of the members

Hydraulic Press Stamping

Welding

13. Method

CO2 Shielded Arc Welding & Submerged Arc Welding(SAW)

14. Standard

AWS D1.1

Galvanizing

15. Galvanization standard of steel sections

ISO 1461 or ASTM A123

16. Galvanization standard of bolts and nuts

ISO 1461 or ASTM A153

Capacity

17. Maximum Production Capacity of Steel Tower per annum

100,000 TON per annum

18. Maximum Capacity of Galvanizing Plant per annum

100,000 TON per annum

Test

19. Factory test

Tensile test,Elements analysis, Sharpy test(impact test), Cold Bending, Preece test, Hammer test

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