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How do I determine if my existing subfloor joist spacing can support the dead load of a cement mortar bed and thick-set ceramic tile installation?

ChatGPTgpt-61 query11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
How do I determine if my existing subfloor joist spacing can support the dead load of a cement mortar bed and thick-set ceramic tile installation?
1 real search · 1 real-search pass
cement mortar bed tile floor dead load joist deflection subfloor requirements TCNA ANSI A108 mortar bedGoogle ↗
OBSERVEDInstruction

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 (1)
Short factOther / navigationalComparisonConsequenceReasonDefinitionInstruction100%Yes / no

Classes come from the query-classifier (a local Laya model).

Searches and sources

ChatGPT1 real searches · gpt-6
cement mortar bed tile floor dead load joist deflection subfloor requirements TCNA ANSI A108 mortar bed Google ↗
  1. Mortar Bed · tcnatile.com
  2. ANSI Standards · tcnatile.com

Queries

1 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
cement mortar bed tile floor dead load joist deflection subfloor requirements TCNA ANSI A108 mortar bed
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
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