Verification Example - Single Nail Lateral Design - Single Shear - Wood-to-Wood Connection (ASD)

Tekla Tedds
Zmodyfikowany: 17 gru 2024
2024
Tekla Tedds Tekla Tedds for Word

Verification Example - Single Nail Lateral Design - Single Shear - Wood-to-Wood Connection (ASD)

Description

This verification example utilizes Tekla Tedds to calculate the lateral design value of a wood-to-wood connection in single shear with a nail. This example is based on Design Example E2.2 of 2015/2018 Structural Wood Design Examples by American Wood Council (AWC) (pages 86 to 90). Comparisons and contrasts are tabularized and discussed regarding the results from Tedds and the AWC Design Example. The Tedds file used in this example is provided in the Tedds “Select Calculation” window, under Verification Examples.

Problem statement

Determine the allowable stress design (ASD) reference lateral design value for a nail connection in single shear with the configuration shown in Figure 1.

References

2015/2018 Structural Wood Design Examples by American Wood Council

2018 National Design Specification for Wood Construction

Example information

Main member: Nominal 3x Douglas Fir-Larch

Side member: Nominal 1x Douglas Fir-Larch

Both members are loaded parallel to grain; G=0.5

Fastener Dimensions:

10d Common Nail

Length = 3”

Notes / Assumptions

  • All adjustment factors = 1

  • End distance = 2” leading to full design strength of connection.


Figure 1: Wood-to-wood connection configuration

Comparison of Results between Tedds and AWC Design Example E2.2
Component Tedds Result AWC Design Example E2.2 % Difference
Dowel bearing strength parallel to grain (main member), Fem 4,637 psia 4,650 psi 0.3%
Dowel bearing strength parallel to grain (side member), Fes 4,637 psia 4,650 psi 0.3%
Mode Im,ZIm 656 lbs 658 lbs 0.3%
Mode Is, ZIs 234 lbs 235 lbs 0.4%
Mode II, ZII 219 lbs 219 lbs 0.0%
Mode IIIm, ZIIIm 229 lbs 230 lbs 0.4%
Mode IIIs, ZIIIs 105 lbs 105 lbs 0.0%
Mode IV, ZIV 117 lbs 118 lbs 0.9%

Comparison Notes

a Determined from NDS 2018 Table 12.3.3 Note 2 (Fl = 16600 * G1.84). The AWS Design Example utilizes the tabulated values from Table 12.3.3 which are rounded to the nearest 50 psi.

Conclusion

Upon reviewing the results above, the determination of the capacity of a single nail in single shear in a wood-to-wood connection using Tekla Tedds is consistent with the result of AWC Design Example 2.2. Differences between Tedds and the example can be attributed to rounding. Users should feel confident that results determined in the Tedds Wood Connection Design module are in agreement with NDS and SDPWS.

Czy to było pomocne?
Wstecz
Dalej