DTM Drafting & Consulting Services, Inc (Vertical System Consultants) offers an array of new construction, maintenance and modernization consulting services. Our projects are executed by an experienced staff of field and project engineers, inspectors, draftsmen and other qualified personnel, fully apprised of all the latest technological advances. We can meet the most demanding schedules and set up appointments within 24 hours. We offer these services with the DTM guarantee of ethical/scrupulous fulfillment in a courteous and efficient manner.


  • New York City Department of Buildings licensed agency inspectors, CEI and CEIS certified

  • Category 1 and 5 inspections, witnessing agency and inspectors required by code

  • Determine the quality and performance level of existing maintenance

  • Determine modernization requirements and course of action

  • On-going project inspections and sign-offs to verify compliance with specifications and contract documents

Project Management & Specifications

  • Establish Vertical Transportation System requirements for new construction and create layout drawings

  • Progress Meetings and Inspections

  • Bid Analysis, Bid Specifications, New Installations, Modernization, Maintenance and Negotiations

  • Progress Meetings/Oversight and Inspections

  • Analysis of shutdowns, repetitive failures and establish root cause

Traffic Analysis

Construction design/Destination Dispatch design

  • Latest state-of-the-art computer simulated traffic analysis including conventional and destination dispatch systems to determine the elevator requirements for proposed building designs and to theoretically evaluate the quality of service in existing buildings

  • Traffic analysis to determine the impact on the elevator system of increasing the building population, determining average waiting times

  • Recommendations based on analysis


  • General Assistance with all Vertical Transportation related issues

  • Draft layout for new construction expertise and assistance with code requirements

  • Expert witness assistance specialty in designing and drafting layouts for new construction and unique projects