JC75
- The primary building blocks of our truss system is ¢Ù C-Section ¢Ú Batten .
- The type of building, roof pitch, roof length, wind load and rain density are some of the deciding factors determining the design of our roof truss system.
D = depth , t = thickness (TCT) , b1 = top flange , b2 = base flange , s = lips
| Section Type E |
D (mm) |
t (mm) |
b1 (mm) |
b2 (mm) |
s (mm) |
Area (Ag in mm²) |
Weight (Kg/m) |
Ix (mm⁴) |
Iy (mm⁴) |
rx (cm) |
ry (cm) |
Zx (mmᶟ) |
Zy (mmᶟ) |
|
| 1 | JC75 x 35 x 0.75mm | 75 | 0.75 | 37.4 | 35.2 | 6.4 | 117.5 | 0.96 | 103305 | 17897 | 3.013 | 1.254 | 2755 | 734 |
| 2 | JC75 x 35 x 0.80mm | 75 | 0.80 | 37.4 | 35.2 | 6.4 | 125.1 | 1.02 | 109828 | 18983 | 3.010 | 1.251 | 2929 | 779 |
| 3 | JC75 x 35 x 1.00mm | 75 | 1.00 | 37.4 | 35.2 | 6.4 | 152.71 | 1.31 | 137515 | 24386 | 3.001 | 1.264 | 3667 | 1013 |
Product Tolerances
Fort Steel light weight trusses are produced within the following tolerances :
| Length | Web (Dim.H) | Flange (Dim.B) | Thickness |
| ± 5mm | ±1mm | ± 2mm | ± 0.05mm |
| Longitudinal Tensile | Tensile Strength | Yield Strength | Protective Coating |
| G550 | Min 550 Mpa | Min 550 Mpa | T-Maz™ |
| Standard Coating Mass | Surface Finish | Surface Colour | |
| Y12 | Non-spangled | Oak |
