URS Table Runs

Rod Runs

Specification of Uplift Restraint Systems

Table 1 — Allowable Loads for URS Runs

1. Tabulated allowable load is the lowest allowable load of the threaded rod, coupler nut, take-up device, and bearing plate components for each URS model.

Table 2 — Deflection Equations

1. Tabulated deflection formulas account for rod elongation, wood bearing deformation, and deflection of shrinkage compensating device. See pp. 68–69 for tabulated deflection values for various length and tension values.

Table 3 — Tabulated Deflection Tables Using RTUD

1. Tabulated deflection values include rod elongation, wood bearing deformation and deflection of shrinkage compensating device. For design loads and lengths not listed, use the deflection calculations tabulated on p. 67.
2. Noted values exceed the maximum allowable load for the URS run.
3. Noted values exceed the maximum rod elongation of 0.18" specified in Section 3.2.1.1 of ICC-ES AC391.

Typical Ratcheting Take-Up Device Assembly Installation

Table 4 — Tabulated Deflection Tables Using ATUD

1. Tabulated deflection values include rod elongation, wood bearing deformation and deflection of shrinkage compensating device. For design loads and lengths not listed, use the deflection calculations tabulated on p. 67.
2. Noted values exceed the maximum allowable load for the URS run.
3. Noted values exceed the maximum rod elongation of 0.18" specified in Section 3.2.1.1 of ICC-ES AC391.

Typical Take-Up Device Assembly Installation