Mich. Admin. Code R. 408.42517

Current through Vol. 24-21, December 1, 2024

Section R. 408.42517 - Construction equipment and material requirements; adoption by reference

Rule 2517.

(1) Equipment and material used in concrete construction and masonry work shall meet the applicable requirements prescribed in American national standard institute standard ANSI A10.9, "Concrete Construction and Masonry Work," 1983 edition, as adopted in R 408.42502.

(2) The minimum safety factors of formwork accessories shall be as prescribed in table 1, as follows:

TABLE 1 MINIMUM SAFETY FACTORS OF FORMWORK ACCESSORIES*
Accessory	Safety Factor	Type of Construction
Form Tie	1.5	Light formwork, 8 feet or less in height with no hazard to life.
	2.0	All formwork over 8 feet in height or hazardous to life. Formwork for architectural concrete.
Form Anchor	2.0	Formwork supporting form weight and concrete pressures only.
	3.0	Formwork supporting weight of forms, concrete, construction live loads, and impact.
Form Hangers	2.0	All applications.
Anchoring inserts used as form ties.	2.0	Precast concrete panels when used as formwork.
*Safety factors are based on ultimate strength of accessory.

Mich. Admin. Code R. 408.42517

1980 AACS; 1989 AACS; 2003 AACS; 2016 MR 16, Eff. 8/17/2016