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What is the correct fastener spacing and torque specification when reinforcing a wobbly staircase stringer with structural lag screws?

ChatGPTgpt-62 queries11/1/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
What is the correct fastener spacing and torque specification when reinforcing a wobbly staircase stringer with structural lag screws?
2 real searches · 1 real-search pass
structural screw installation guide wood framing spacing edge distance pilot hole torque manufacturer Simpson Strong-Tie SDWSGoogle ↗
OBSERVED
IRC stair stringer structural repair sister stringer fastener requirements building codeGoogle ↗
OBSERVED

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Classifying 2 queries…

Searches and sources

ChatGPT2 real searches · gpt-6
structural screw installation guide wood framing spacing edge distance pilot hole torque manufacturer Simpson Strong-Tie SDWS Google ↗
IRC stair stringer structural repair sister stringer fastener requirements building code Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
structural screw installation guide wood framing spacing edge distance pilot hole torque manufacturer Simpson Strong-Tie SDWS
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
IRC stair stringer structural repair sister stringer fastener requirements building code
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1