Chart for Section B - Wire Rope Cable Intermediate Rail Pass-through Resistance to 4" Sphere.
This chart was prepared by The Cable Connection to summarize the calculations in Section B
(Pass-through resistance to 4" sphere) based on 300-400 pounds of tension on each cable.
| Cable Diameter | Center to Center Cable Spacing on End Post | Anchor End Post Spacing | Cable Support Spacing | Cable Spread with 4 inch Sphere Load Applied as Required by 2006 IRC Codes |
|---|---|---|---|---|
| 1/8" | 3.10" | 50 feet | 42" | 3.474" |
| 3/16" | 3.10" | 50 feet | 42" | 3.439" |
| 3/16" | 3.25" | 50 feet | 42" | 3.699" |
| 1/4" | 3.10" | 50 feet | 42" | 3.405" |
| 1/4" | 3.36" | 50 feet | 42" | 3.880" |
| 5/16" | 3.10" | 50 feet | 42" | 3.368" |
| 5/16" | 3.25" | 50 feet | 42" | 3.567" |
| 5/16" | 3.36" | 50 feet | 42" | 3.735" |
| 3/8" | 3.10" | 50 feet | 42" | 3.328" |
| 3/8" | 3.25" | 50 feet | 42" | 3.513" |
| 3/8" | 3.36" | 50 feet | 42" | 3.659" |
| Files in (pdf) | Description |
|---|---|
| Section A | Derivation of equations for code requirements intermediate railing sphere pass-through resistance |
| Section B | Calculations for various code diameters for pass-through resistance for 4" sphere |
| Section C | Derivation of equations for code required load |
| Section D | Cable end reaction under code required loading for various cable diameters |