Mich. Admin. Code R. 408.30506 - [Rescinded effective 8/29/2025] Submittal documents

Rule 506. Sections R 106.1.4 and R802.10.1 of the code are amended and Section R106.1.4 and figure 802.10.1 are added to the code to read as follows: R106.1.4. Truss design data. As an alternative to the submission of truss design drawings, figure R802.10.1, the truss design data sheet, may be provided to the building official as part of the construction documents at the time of application. Truss design drawings shall be submitted to the building official prior to truss installation as required by Section R802.10.1. R802.10.1 Truss design drawings. Truss design drawings, prepared in conformance with Section R802.10.1, shall be provided to the building official and approved prior to installation. The truss design data sheet, figure R802.10.1, may be provided to the building official at the time of permit application, as an alternative to design drawings as permitted in Section R106.1.4. Truss design drawings shall include, at a minimum, the information specified below. Truss design drawings shall be provided with the shipment of trusses delivered to the jobsite.

(1) Slope or depth, span, and spacing.

(2) Location of all joints.

(3) Required bearing widths .

(4) Design loads as applicable.

(a) Top chord live load (including snow loads).

(b) Top chord dead load.

(c) Bottom chord live load.

(d) Bottom chord dead load.

(e) Concentrated loads and their points of application.

(f) Controlling wind and earthquake loads.

(5) Adjustments to lumber and joint connector design values for conditions of use.

(6) Each reaction force and direction.

(7) Joint connector type and description (e.g., size, thickness, or gauge) and the dimensioned location of each joint connector except where symmetrically located relative to the joint interface.

(8) Lumber size, species, and grade for each member.

(9) Connection requirements for the following:

(a) Truss to truss girder .

(b) Truss ply to ply.

(c) Field splices.

(10) Calculated deflection ratio and/or maximum description for live and total load.

(11) Maximum axial compression forces in the truss members to enable the building designer to design the size, connections, and anchorage of the permanent continuous lateral bracing. Forces shall be shown on the truss design drawing or on supplemental documents.

(12) Required permanent truss member bracing location.

Notes

Mich. Admin. Code R. 408.30506

2001 AACS; 2004 AACS.; 2008 AACS; 2010 AACS; 2015 AACS; 2021 MR 11, Eff. 6/4/2021; 2025 MR 10, Eff. 8/29/2025