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AWC Standards
Categories
NDS
WFCM
SDPWS
PWF
National Design Specification (NDS)
Where can I find historic timber design values and standards?
Where can I find design information on smooth shank stainless steel nail withdrawal strength for wood?
Can carriage bolts be designed per the National Design Specification (NDS) for Wood Construction?
For fire resistive construction, does the heat of the fire affect the allowable stress design values of wood?
How can I determine the fire endurance of an exposed wood member?
Why don't you cover plastic design considerations in your standards?
Where can I find design values for tropical hardwoods, imported species, or other species not listed in the NDS Supplement?
Where can I find information on Timber Poles and Piles?
If there's an existing structure where the MC<19% for southern pine timbers, could the designer back out the wet service adjustment from the NDS published design values in table 4D?
What is the difference between southern pine and southern pine-misiones Argentina?
Why did shear parallel to grain (horizontal shear) design values increase in the 2001 NDS?
Are there design values for shear perpendicular to grain?
Where can I obtain information on designing post frame structures (sometimes referred to as pole buildings or pole barns)?
How do I design for notches in a bending member?
What is the difference between 2012 NDS 3.5 and 2012 IBC Table 1604.3 Footnote d for adjusting long-term deflection of wood members?
What are the safety factors (factor of safety) that are used to derive allowable design values for wood fasteners, lumber design values, etc. referenced in the NDS?
Where can I find more information about the NDS reference, Square and Hex Bolts and Screws, Inch Series?
Where can I find more information on all of the NDS references?
Where can I find referenced standards for dimensional tolerances for nails?
Where can I find design values, span tables, allowable load tables, and other information for structural softwood and hardwood lumber?
For LRFD in the 2005 NDS®, why does the resistance factor cancel out when adjusting nominal resistances using the LRFD Format Conversion Factor and the resistance factor?
What is the purpose of the NDS Format Conversion Factor, K
F
?
What is the load duration factor (C
D
)?
What is the difference between full diameter and reduced diameter body lag screws (also known as lag bolts)?
Are self-tapping lag screws covered by provisions in the NDS?
Where can I find background on In-Grade Testing for the NDS supplement?
Does gypsum provide lateral support for wall studs?
Can finger jointed lumber (also known as end-jointed and edge-glued) be substituted for sawn lumber?
Where can I find design values, span tables, allowable load tables and other information for structural glued-laminated timber?
Where can I find design values for lumber and glued laminated timber?
Where do I find decking design values?
Where can I find design values for cypress for structural use?
What is creep and how can I address it?
Where can I find resistance values, connection details and other general information for bolts, lag screws, wood screws, nails, split ring and shear plate connections?
Where can I find information about designing anchor bolts per ACI 318 Appendix D and the NDS?
Where can I find information for nominal 1", 1-1/4", and 1-1/2" stress-rated boards?
Where can I find information on evaluation, maintenance and repair of existing structures?
Wood Frame Construction Manual (WFCM)
What is the difference between a collar tie and a rafter tie?
What is a dropped header?
Can the WFCM be used to design for wind Exposure D?
Are staples acceptable as alternate fastening per ESR 1539 Table 27 for roof sheathing?
What load combinations are taken into account in the 2015 WFCM?
Why is rafter slope limited to 12:12?
Are there any examples illustrating roof connections to raised heel trusses?
How do you resolve the diaphragm shear loads for sloped roofs?
Does it matter if the joist spacing is 16" or 24" o.c. for the blocking?
If you use a rafter strap over the top of the rafter at the peak can you eliminate the collar ties in the upper one third?
What is the maximum roof pitch angle, beyond which the sloped roof can no longer be considered an effective resistive diaphragm element for transfer of lateral loads?
If multiple connectors are used, are their capacities additive?
What is the limit on height of studs in design of perforated or segmented shear wall design?
If the corner walls from both directions are used as shear walls, can we use one hold-down for one direction only?
Can you eliminate the collar tie with the use of a mechanical connection over or at the ridge beam?
I noticed that MWFRS coefficients are used. That's ok for walls, but I typically use C&C coefficients for truss anchorages. How does WFCM address this?
Does the rafter to top plate uplift connector put the top plate into cross grain bending?
Is roof diaphragm blocking required at the top plate to transfer shear from the diaphragm boundary?
For diaphragm blocking, does the number of joist bays blocked depend on the spacing of the joists or rafters (e.g., 16" or 24" o.c.)?
Are there specific design requirements in the WFCM for the nail head, diameter, and length for different types of sheathing?
If a rafter strap is used at the peak can collar ties be eliminated?
Should an interior shear wall on the top floor extend through the attic to the underside of the roof?
Are there excel spreadsheets or other calculators available based on the WFCM?
Are portal frames covered in the WFCM?
What is Mean Roof Height (MRH) and does WFCM impose a limit on it?
Can wind exposures vary around a structure?
What's the definition of Exposure B, C, and D?
What is the difference between the envelope procedure and directional procedure and which approach is used in the WFCM?
How does the WFCM address floor plan offsets that result from wall extensions and recesses?
Where can I find information on conventional wood frame construction?
What force should the vertical members next to wall openings (chords) be designed for in perforated shear walls? Is it the same as the end chords?
What resources are available for wood construction in high seismic areas and why build with wood in earthquake-prone areas?
What is the difference between the perforated shear wall method and the segmented shear wall method?
What is the maximum shear wall aspect ratio for various wood wall assemblies?
How do I calculate a capacity for lumber sheathing or heavy timber decking diaphragms?
Are there deflection limits for cantilevers?
What are the design manuals for wood construction in high wind areas?
What is splicing and how does it affect the structure?
Special Design Provisions for Wind and Seismic (SDPWS)
Are wood diaphragms presumed to be non-rigid in the 2015 International Building Code (IBC)?
Can proprietary connectors be used to meet the hold down and anchorage requirements in SDPWS
Does the 3x member framing requirement apply to shear walls designed only for wind?
Are shear wall capacities available or calculable for use with collated (nail gun) nails?
Can you provide clarification for how to interpret Table 4.2A?
Wind capacity for diaphragms has been 40% more than seismic in past versions of SDPWS. Does this still apply with the new wind loads given by ASCE 7-10 versus ASCE 7-05?
Is summation of capacities allowed for shear walls sheathed on both sides with different materials?
Should the 3” x 3” washers specified for shear wall anchorage be corrosion resistant?
Do you have to block diaphragms for open front structures? If not, what are the criteria where you don't need to?
Does the SPDWS address Omega loads in shear walls which are part of a two stage analysis in typical podium structures?
Are there restrictions on the orientation of blocking? Should it be oriented flatwise or vertically?
Do the Special Design Provisions for Wind and Seismic supersede methods in the IBC or IRC?
Special Design Provisions for Wind and Seismic (SDPWS) specifies diaphragm unit shear values for lateral loads due to wind or seismic. What diaphragm unit shear values should be used to resist lateral loads from soil?
What force should the vertical members next to wall openings (chords) be designed for in perforated shear walls? Is it the same as the end chords?
What resources are available for wood construction in high seismic areas and why build with wood in earthquake-prone areas?
Can the effective shear stiffness values, Ga, in Special Design Provisions for Wind and Seismic (SDPWS), be used for calculation of diaphragm and shear wall deflections due to wind loads?
What is the difference between the perforated shear wall method and the segmented shear wall method?
What is the maximum shear wall aspect ratio for various wood wall assemblies?
How do I calculate a capacity for lumber sheathing or heavy timber decking diaphragms?
Where do I find decking design values?
Per 2008 Special Design Provisions for Wind and Seismic (SDPWS), can anchor bolts in a 2-sided 2x6 shear wall be staggered to meet the ½" edge distance for 3x3 plates or do custom plates need to be installed?
Permanent Wood Foundation (PWF)
Special Design Provisions for Wind and Seismic (SDPWS) specifies diaphragm unit shear values for lateral loads due to wind or seismic. What diaphragm unit shear values should be used to resist lateral loads from soil?
Where can I find technical papers on Timber Retaining Walls?
What publications do you have on Permanent Wood Foundations?
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