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What are the current building code requirements for adding a deck attached to the back of a house in most states, specifically regarding railing height and ledger board flashing?

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
What are the current building code requirements for adding a deck attached to the back of a house in most states, specifically regarding railing height and ledger board flashing?
2 real searches · 1 real-search pass
2024 International Residential Code deck guard height R312.1.2 ledger flashing R507.2.4 requirementsGoogle ↗
OBSERVEDInstruction
state residential building code deck railing height 36 42 inches ledger flashing IRC adoption variationsGoogle ↗
OBSERVEDConsequence

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigationalComparisonConsequence50%ReasonDefinitionInstruction50%Yes / no

Classes come from the query-classifier (a local Laya model). 1 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
2024 International Residential Code deck guard height R312.1.2 ledger flashing R507.2.4 requirements Google ↗
state residential building code deck railing height 36 42 inches ledger flashing IRC adoption variations Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
2024 International Residential Code deck guard height R312.1.2 ledger flashing R507.2.4 requirements
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
of 1
state residential building code deck railing height 36 42 inches ledger flashing IRC adoption variations
OBSERVED
Google ↗
AI Mode ↗
—Consequence——1x
of 1