<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31472539</termId><termName>Pratt trusses</termName><termType>PT</termType><termNote><![CDATA[ Trusses having parallel chords, vertical members in compression, and diagonal members (which slant toward the center) in tension. ]]></termNote><termCreatedDate>2026-03-30 21:07:11</termCreatedDate><relation><relationType>UF</relationType><termId>31472540</termId><termName>N-trusses</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31472541</termId><termName>Pratt truss</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31472542</termId><termName>trusses, Pratt</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31458650</termId><termName>trusses by construction</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31478670</termId><termName>Parker trusses</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31478673</termId><termName>Whipple trusses</termName><termType>PT</termType></relation></term>  </Zthes>