Material | A Clearance from moving part at all points | B Largest mesh or opening allowable | C Minmum gauge (U.S. Standard) or thickness |
(See Fig. G-2) | (See Fig. G-1) | ||
Inches | Inches | Gauge/Inches | |
Woven wire .......................... | Under 2 .......................... | 3/8.......................... | No. 16 |
2-4.......................... | 1/2.......................... | No. 16 | |
4-15.......................... | 2.......................... | No. 12 | |
Expanded metal .......................... | Under 4.......................... | 1/2 .......................... | No. 18 |
4-15.......................... | 2.......................... | No. 13 | |
Perforated metal .......................... | Under 4.......................... | 1/2.......................... | No. 20 |
4-15.......................... | 2.......................... | No. 14 | |
Sheet metal .......................... | Under 4.......................... | .......................... | No. 22 |
4-15.......................... | .......................... | No. 22 | |
Plastic .......................... | Under 4.......................... | 1/2.......................... | * |
4-15.......................... | 2.......................... | * | |
Plywood or equivalent .......................... | Under 4.......................... | .......................... | 5/16 |
Plywood or equivalent .......................... | 4-15.......................... | .......................... | 5/16 |
Solid wood .......................... | Under 4.......................... | .......................... | 1 |
Solid wood .......................... | 4-15.......................... | .......................... | 1 |
Wood or metal strip crossed .......................... | Under 4.......................... | 3/8.......................... | Metal No. 16 Wood 3/4 |
4-15.......................... | 2.......................... | Metal No. 16 Wood 3/4 | |
Wood or metal strip crossed .......................... | Under 4.......................... | 1/2.......................... | Metal No. 16 Wood 3/4 |
4-15.......................... | 1.......................... | Metal No. 16 Wood 3/4 | |
Standard rail .......................... | Min. 15.......................... | .......................... | .......... |
Max. 20.......................... | .......................... | .......... | |
Other materials that meet the strength requirements of this table and provide equivalent protection may be used. | |||
* Tensile strength of 10,000 lb/in2 |
Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 7, grp. 6, art. 37, tbl. G-1