Mich. Admin. Code R. 408.10753

Current through Vol. 24-19, November 1, 2024

Section R. 408.10753 - Materials

Rule 753.

(1) Wood guards may be used if the presence of fumes or if manufacturing conditions cause rapid deterioration of metal guards, in construction work, and in locations outdoors if extreme cold or extreme heat makes metal guards and railings undesirable.

(2) Material sizes and clearances shall be pursuant to table A. See Figure 2, and Appendices A and B.

(3) Table A reads as follows:

TABLE A STANDARD MATERIALS AND DIMENSIONS FOR MACHINERY GUARDS
Size and Clearance of Filler Materials
Material	Clearance From Moving Part At All Points (Inches)		Largest Mesh or Opening Allowable B (Inches)		Minimum Gauge (U.S. Standard) Or Thickness
Woven Wire	Under 2 2-4 4-15		3/8 1/2 2	No. 16-1/8 In. No. 16-1/2 No. 12-2
Expanded Metal	Under 4 4-15		1/2 2	No. 18-1/2 In. No. 13-2
Perforated Metal	Under 4 4-15		1/2 2	No. 20-1/2 In. No. 14-2
Sheet Metal	Under 4 4-15		- - -	No. 22 No. 22
Wood Or Metal Strips Crossed	}	Under 4 4-15	1/2 2	}	3/4 In. Wood Or No. 16 Metal
Wood Or Metal Strips Not Crossed	}	Under 4 4-15	1/2 The Width One Width
Plywood, Plastic Or Equivalent	Under 4 4-15		- - -	1/4 In. 1/4 In.
Standard Railing	Min. 15 Max. 20		- - -	- - -

Mich. Admin. Code R. 408.10753

1979 AC; 1982 AACS; 2016 MR 5, Eff. 3/15/2016