The Source Directory

The annual global directory for the vertical transportation industry since 1984.

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307 West 36th Street - 8th Floor, , New York, New York 10018

Eastern Region

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Vertical Systems Analysis

Vertical Systems Analysis has been providing elevator consulting services for over 38 years mostly in the Tri-State area as well as nationwide. VSA is an established full-service consulting engineering firm practicing in all major engineering disciplines as it relates to vertical transportation systems including mechanical, electrical, and design layout.

We specialize in a full range of services for all types of vertical transportation that includes test witnessing, modernizations, new installations, surveys and feasibility studies, design engineering, maintenance contract preparation,  proposal & invoice reviews, violation research and resolve.

Consultant Details

Principal: Edward Voll

Consultant Services:


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