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href="/ontology/term/uk.cam-perthnasol" showAs="cam perthnasol"/><TLCTerm eId="term-relevant-step" href="/ontology/term/uk.relevant-step" showAs="relevant step"/><TLCTerm eId="term-diffyg-perthnasol" href="/ontology/term/uk.diffyg-perthnasol" showAs="diffyg perthnasol"/><TLCTerm eId="term-relevant-defect" href="/ontology/term/uk.relevant-defect" showAs="relevant defect"/><TLCTerm eId="term-y-cyfnod-perthnasol" href="/ontology/term/uk.y-cyfnod-perthnasol" showAs="y cyfnod perthnasol"/><TLCTerm eId="term-the-relevant-period" href="/ontology/term/uk.the-relevant-period" showAs="the relevant period"/><TLCTerm eId="term-gwaith-perthnasol" href="/ontology/term/uk.gwaith-perthnasol" showAs="gwaith perthnasol"/><TLCTerm eId="term-relevant-works" href="/ontology/term/uk.relevant-works" showAs="relevant works"/><TLCTerm eId="term-landlord-neu-gwmni-rheoli" href="/ontology/term/uk.landlord-neu-gwmni-rheoli" showAs="landlord neu gwmni rheoli"/><TLCTerm eId="term-landlord-or-management-company" href="/ontology/term/uk.landlord-or-management-company" showAs="landlord or management company"/><TLCTerm eId="term-risg-diogelwch-adeilad" href="/ontology/term/uk.risg-diogelwch-adeilad" showAs="risg diogelwch adeilad"/><TLCTerm eId="term-building-safety-risk" href="/ontology/term/uk.building-safety-risk" showAs="building safety risk"/><TLCTerm eId="term-trosi" href="/ontology/term/uk.trosi" showAs="trosi"/><TLCTerm eId="term-conversion" href="/ontology/term/uk.conversion" showAs="conversion"/></references><notes source="#"><note ukl:Name="Commentary" ukl:Type="I" class="commentary I" eId="key-0bc72512e50b8dc87750cd0da1df62c3" marker="I1"><p>A. 113  ddim mewn grym ar y Cydsyniad Brenhinol, gweler <ref eId="n88f23cb899471706" class="subref operative" href="http://www.legislation.gov.uk/id/asc/2026/5/section/138/2">a. 138(2)</ref></p></note></notes><proprietary xmlns:ukm="http://www.legislation.gov.uk/namespaces/metadata" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dct="http://purl.org/dc/terms/" source="#"><dc:identifier>http://www.legislation.gov.uk/asc/2026/5/section/113/welsh</dc:identifier><dc:title>Deddf Diogelwch Adeiladau (Cymru) 2026</dc:title><dc:language>cy</dc:language><dc:publisher>Statute Law Database</dc:publisher><dc:modified>2026-06-25</dc:modified><dc:contributor>Expert Participation</dc:contributor><dct:valid>2026-04-28</dct:valid><ukm:PrimaryMetadata><ukm:DocumentClassification><ukm:DocumentCategory Value="primary"/><ukm:DocumentMainType Value="WelshParliamentAct"/><ukm:DocumentStatus Value="revised"/></ukm:DocumentClassification><ukm:Year Value="2026"/><ukm:Number Value="5"/><ukm:EnactmentDate Date="2026-04-27"/><ukm:ISBN Value="9780348114010"/><ukm:UnappliedEffects><ukm:UnappliedEffect Type="coming into force" RequiresWelshApplied="true" RequiresApplied="true" AffectingNumber="5" AffectingYear="2026" AffectedYear="2026" URI="http://www.legislation.gov.uk/id/effect/key-a155c9cc88a2cd91825740386b988149" AffectedClass="WelshParliamentAct" AffectedTerritorialApplication="W" AffectingURI="http://www.legislation.gov.uk/id/asc/2026/5" Row="118" AffectingClass="WelshParliamentAct" AffectedNumber="5" AffectedURI="http://www.legislation.gov.uk/id/asc/2026/5" AffectedProvisions="s. 113" Modified="2026-06-25T12:30:20Z" EffectId="key-a155c9cc88a2cd91825740386b988149" AffectedExtent="E+W" AffectingProvisions="s. 138(2)"><ukm:AffectedTitle>Building Safety (Wales) Act 2026</ukm:AffectedTitle><ukm:AffectedTitle xml:lang="cy">Deddf Diogelwch Adeiladau (Cymru) 2026</ukm:AffectedTitle><ukm:AffectedProvisions><ukm:Section Ref="section-113" URI="http://www.legislation.gov.uk/id/asc/2026/5/section/113">s. 113</ukm:Section></ukm:AffectedProvisions><ukm:AffectingTitle>Building Safety (Wales) Act 2026</ukm:AffectingTitle><ukm:AffectingTitle xml:lang="cy">Deddf Diogelwch Adeiladau (Cymru) 2026</ukm:AffectingTitle><ukm:AffectingProvisions><ukm:Section Ref="section-138-2" URI="http://www.legislation.gov.uk/id/asc/2026/5/section/138/2">s. 138(2)</ukm:Section></ukm:AffectingProvisions><ukm:InForceDates><ukm:InForce Applied="false" WelshApplied="false" Prospective="true" Qualification=""/></ukm:InForceDates></ukm:UnappliedEffect></ukm:UnappliedEffects></ukm:PrimaryMetadata><ukm:Notes><ukm:Note IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/113/notes" DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/113/notes/welsh"/><ukm:Alternatives><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/ascen_20260005_we.pdf" Date="2026-05-22" Title="Explanatory Note" TitleWelsh="Nodiadau Esboniadol - Welsh" Size="2726839" Language="Welsh"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/ascen_20260005_mi.pdf" Date="2026-05-22" Title="Explanatory Note - Mixed Language" TitleWelsh="Explanatory Note - Mixed Language" Size="4566700" Language="Mixed"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/ascen_20260005_en.pdf" Date="2026-05-22" Title="Explanatory Note - English" Size="3600739"/></ukm:Alternatives></ukm:Notes><ukm:Alternatives><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/asc_20260005_we.pdf" Date="2026-05-15" Size="3365606" Language="Welsh" Print="false"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/asc_20260005_en.pdf" Date="2026-05-15" Size="4156974" Print="false"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/asc_20260005_mi.pdf" Date="2026-05-15" Size="5567976" Language="Mixed" Print="true"/></ukm:Alternatives><ukm:Statistics><ukm:TotalParagraphs Value="201"/><ukm:BodyParagraphs Value="156"/><ukm:ScheduleParagraphs Value="45"/><ukm:AttachmentParagraphs Value="0"/><ukm:TotalImages Value="0"/></ukm:Statistics></proprietary></meta><body eId="body"><part eId="part-4"><num>RHAN 4</num><heading>CYWEIRIO DIFFYGION PENODOL</heading><section eId="section-113" uk:target="true"><num>113</num><heading>Ystyr “diffyg perthnasol”</heading><subsection eId="section-113-1"><num>(1)</num><intro><p>Yn y Rhan hon—</p></intro><hcontainer name="definition"><intro><p>ystyr “<term refersTo="#term-cam-perthnasol" eId="term-cam-perthnasol">cam perthnasol</term>” (“<term refersTo="#term-relevant-step"><i>relevant step</i></term>”), mewn perthynas â diffyg perthnasol, yw cam â’i bwrpas yw—</p></intro><level class="para1"><num>(a)</num><content><p>atal neu leihau’r tebygolrwydd o dân rhag digwydd o ganlyniad i’r diffyg perthnasol neu o’r adeilad (neu unrhyw ran ohono) yn dymchwel o ganlyniad i ddiffyg o’r fath,</p></content></level><level class="para1"><num>(b)</num><content><p>lleihau difrifoldeb unrhyw ddigwyddiad o’r fath, neu</p></content></level><level class="para1"><num>(c)</num><content><p>atal neu leihau niwed i bobl yn yr adeilad neu o’i amgylch a allai ddeillio o ddigwyddiad o’r fath;</p></content></level></hcontainer><hcontainer name="definition"><intro><p>ystyr “<term refersTo="#term-diffyg-perthnasol" eId="term-diffyg-perthnasol">diffyg perthnasol</term>” (“<term refersTo="#term-relevant-defect" eId="term-relevant-defect">relevant defect</term>”), mewn perthynas ag adeilad perthnasol, yw diffyg o ran yr adeilad sydd—</p></intro><level class="para1"><num>(a)</num><content><p>yn codi o ganlyniad i unrhyw beth sydd wedi ei wneud neu heb ei wneud (gan gynnwys unrhyw beth sydd wedi ei wneud neu heb ei wneud wrth ddarparu gwasanaethau proffesiynol), neu unrhyw beth a ddefnyddiwyd neu nas defnyddiwyd, mewn cysylltiad â gwaith perthnasol, a</p></content></level><level class="para1"><num>(b)</num><content><p>yn creu risg diogelwch adeilad neu’n cynyddu’n sylweddol risg diogelwch adeilad presennol.</p></content></level></hcontainer></subsection><subsection eId="section-113-2"><num>(2)</num><intro><p>Yn yr adran hon—</p></intro><hcontainer name="definition"><content><p>ystyr “<term refersTo="#term-y-cyfnod-perthnasol" eId="term-y-cyfnod-perthnasol">y cyfnod perthnasol</term>” (“<term refersTo="#term-the-relevant-period"><i>the relevant period</i></term>”) yw’r cyfnod sy’n dechrau â 28 Mehefin 1992 ac sy’n dod i ben â 20 Chwefror 2026;</p></content></hcontainer><hcontainer name="definition"><intro><p>ystyr “<term refersTo="#term-gwaith-perthnasol" eId="term-gwaith-perthnasol">gwaith perthnasol</term>” (“<term refersTo="#term-relevant-works" eId="term-relevant-works">relevant works</term>”) yw unrhyw un neu ragor o’r hyn a ganlyn—</p></intro><level class="para1"><num>(a)</num><content><p>gwaith sy’n ymwneud ag adeiladu neu drosi’r adeilad, os cwblhawyd y gwaith adeiladu neu’r gwaith trosi yn y cyfnod perthnasol;</p></content></level><level class="para1"><num>(b)</num><content><p>gwaith a ymgymerwyd neu a gomisiynwyd gan neu ar ran landlord neu gwmni rheoli, os cwblhawyd y gwaith yn y cyfnod perthnasol;</p></content></level><level class="para1"><num>(c)</num><content><p>gwaith a ymgymerwyd ar ôl diwedd y cyfnod perthnasol i unioni diffyg perthnasol (gan gynnwys diffyg sy’n ddiffyg perthnasol yn rhinwedd y paragraff hwn);</p></content></level></hcontainer><hcontainer name="definition"><content><p>ystyr “<term refersTo="#term-landlord-neu-gwmni-rheoli" eId="term-landlord-neu-gwmni-rheoli">landlord neu gwmni rheoli</term>” (“<term refersTo="#term-landlord-or-management-company" eId="term-landlord-or-management-company">landlord or management company</term>”) yw landlord o dan les o’r adeilad neu unrhyw ran ohono, neu unrhyw berson sy’n barti i les o’r fath ac eithrio fel landlord neu denant;</p></content></hcontainer><hcontainer name="definition"><intro><p>ystyr “<term refersTo="#term-risg-diogelwch-adeilad" eId="term-risg-diogelwch-adeilad">risg diogelwch adeilad</term>” (“<term refersTo="#term-building-safety-risk" eId="term-building-safety-risk">building safety risk</term>”) yw risg i ddiogelwch pobl yn yr adeilad neu o’i amgylch sy’n deillio o—</p></intro><level class="para1"><num>(a)</num><content><p>lledaeniad tân, neu</p></content></level><level class="para1"><num>(b)</num><content><p>yr adeilad, neu unrhyw ran ohono, yn dymchwel;</p></content></level></hcontainer><hcontainer name="definition"><content><p>ystyr “<term refersTo="#term-trosi" eId="term-trosi">trosi</term>” (“<term refersTo="#term-conversion" eId="term-conversion">conversion</term>”) yw trosi’r adeilad i’w ddefnyddio (yn gyfan gwbl neu’n rhannol) at ddibenion preswyl.</p></content></hcontainer></subsection></section></part></body></act></akomaNtoso>