Five libraries.
Each member sees their tier.
Every example below is built on public documents, with three members asking the same question. Pick the one closest to your organization.
8 documents · 3 tiersProcess safetyProcess Safety Library · OSHA PSM · CSB final reports · EPA RMPAsked as three members“What were the root causes of the Texas City explosion?”MHProcess safety engineerCorporateLAPlant operations supervisorMemberJPEngineering studentPublicSee the process safety example
6 documents · 3 tiersBuilding standardsBuilding Standards Library · FEMA safe rooms · coastal · seismic · FHWA bridgesAsked as three members“Which edition applies to a project permitted in 2018?”IVStructural engineerSubscriberMRBuilding officialMemberREHomeownerPublicSee the building standards example
5 documents · 3 tiersClinical guidanceClinical Guidance Library · CDC guidelines · AHRQ · patient pagesAsked as three members“Which isolation precautions apply to C. difficile?”LHInfection preventionistCE subscriberMBStaff nurseClinicianJEPatient or caregiverPublicSee the clinical guidance example
5 documents · 3 tiersTax complianceTax & Compliance Library · IRS publications · FFIEC BSA/AMLAsked as three members“What changed in Publication 583 between tax years?”HOTax practitionerPremiumTBSmall-business ownerBasicCLPublic visitorPublicSee the tax compliance example
5 documents · 3 tiersAviation maintenanceAviation Maintenance Library · FAA AMT handbooks · AC 43.13-1B · 14 CFR 43Asked as three members“How are the types of corrosion identified and treated?”DOInspector with inspection authorizationInspectorSWA&P technicianTechnicianTLStudent mechanicPublicSee the aviation maintenance example
Your tiers, your names.
Each library keeps its own words for access. Chairlift maps them to three nested rings, so a member never searches past their own.
| Library | Open to all | Middle tier | Top tier |
|---|---|---|---|
| Process safety | Public | Member | Corporate |
| Building standards | Public | Member | Subscriber |
| Clinical guidance | Public | Clinician | CE subscriber |
| Tax compliance | Public | Basic | Premium |
| Aviation maintenance | Public | Technician | Inspector |
Examples are built on public documents; access tiers are simulated. People and companies in the examples are fictional.
Not on the list? Bring your library.
Any technical library with tiers works the same way. We’ll show it on your documents.



















