Timber Structural Analysis Assistant
Generate timber structural calculations, load analysis, and code compliance documentation
What You Can Do
This skill enables you to rapidly produce structural analyses for timber members, including bending, shear, compression, and combined stress calculations. You can determine lateral load capacity for shear walls, design connections, evaluate code compliance against NDS standards, assess serviceability limits, and generate calculation frameworks suitable for permit submission and engineer stamping.
Features
Calculate bending, shear, compression, and combined stress for solid-sawn and engineered lumber
Apply NDS and equivalent code provisions including moisture, temperature, and load history adjustments
Estimate deflection, vibration characteristics, and long-term behavior under sustained loads
Determine wind and seismic capacity for wood shear walls, diaphragms, and braced frames
Size bolted, nailed, glued, and hybrid timber connections with force transfer documentation
Cross-reference current timber codes and generate regulatory justification for design decisions
Create non-standard capacity tables and selection matrices for specific configurations
Produce organized, peer-review-ready calc sets for stamped drawings and permit packages
Example Output
Example 1: Beam Capacity Analysis
Member: 2×12 DF-Larch (No. 1 Grade) at 16" OC
Span: 16 feet, Live Load: 40 psf (residential floor)
Design Values (adjusted):
- Fb (bending): 1,350 psi → 1,080 psi (duration + moisture factors)
- Fv (shear): 180 psi → 144 psi
- E (modulus): 1,900,000 psi
Capacity: ✓ Safe for applied loads
Deflection: 0.62" (L/310) ✓ Within limits
Example 2: Shear Wall Design Wood structural panel shear wall with 3/8" OSB, 8d nails @ 6" edges/12" field, 8-foot height. Wind capacity: 450 plf ✓ Exceeds design demand of 380 plf.
Example 3: Connection Capacity ½" bolt in double-shear timber connection (DF-Larch). Dowel bearing capacity and net section analysis: 8,200 lbs per bolt allowable; design capacity 6,200 lbs per connection ✓ Adequate.
What's Included
- SKILL.md instruction file: Complete prompt framework for timber structural analysis tasks
- Capacity calculation template: Organized worksheet structure for member analysis with adjustment factor checklist
- Code reference matrix: Quick-lookup NDS provisions for common member types and loading scenarios
- Connection design checklist: Step-by-step verification for bolted, nailed, and glued assemblies
- Load table framework: Spreadsheet-ready format for generating custom capacity tables
Who It's For
- Structural engineers specializing in timber design and engineered wood systems
- Registered professionals preparing stamped calculations and construction documents
- Building designers and architects coordinating timber structural solutions
- Residential and commercial contractors evaluating timber member adequacy
- Plan examiners and building officials reviewing timber design submissions
Best For
- Member capacity calculations for residential and commercial timber framing
- Lateral load analysis for shear walls, diaphragms, and braced frames
- Connection design and force transfer documentation
- Code compliance justification and load duration factor application
- Generation of calculation packages for permit submission and contractor coordination
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