<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31376469</termId><termName>flat slab systems</termName><termType>PT</termType><termNote><![CDATA[ Structural systems based on two-way concrete slabs with drop panels and often with capitals but without beams. ]]></termNote><termCreatedDate>2026-03-30 20:41:33</termCreatedDate><relation><relationType>UF</relationType><termId>31376474</termId><termName>flat-slab construction</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376475</termId><termName>systems, flat slab</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376476</termId><termName>two-way flat slab construction</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376477</termId><termName>two-way flat slab systems</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376478</termId><termName>two-way flat-slab construction</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376470</termId><termName>flat slab and drop panel systems</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376471</termId><termName>flat slab construction</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376472</termId><termName>flat slab system</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31376473</termId><termName>flat slabs</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31345518</termId><termName>two-way structural systems</termName><termType>PT</termType></relation></term>  </Zthes>