Most of these standards databases are not searchable through Eolas, so you need to search each one. Go to the A-Z databases icon on the library homepage: https://libguides.itsligo.ie/az.php
The library subscribes to four databases which give access to full text standards on specific subjects:
BSOL: specific BSI standards ordered, can suggest new standards
IEEE: own standards, also IEC
IHS (Construction Information Service): Eurocodes, NSAI
SAI Global: NSAI and ISO, has equivalent standards