Since the inception of Detailed Site Surveys (DSS) in 2005, DSP has been a major supplier of DSS for Sydney Trains across their network. DSP currently hold the contract to supply and maintaining DSS information for Sydney Trains in the Sydney North region (Milsons Point to Newcastle). Recently DSP has managed DSS information for consultants appointed Primary Controller of the DSS by Sydney Trains. DSP have a thorough knowledge of DSS drafting standards and have developed in-house software for compliance of CAD files with the relevant drafting standards.

DSP have broad experience in Bridge renewal surveys throughout Sydney and rural NSW. From initial site survey through to setout and final inspection DSP have the specialised skills for surveying all bridge configurations in any location.

This area of specialisation has provided solutions for many clients in areas such as subdivision, acquisitions, easements, leases and redefinition. Our Registered Surveyors can provide guidance for your boundary / titling applications and have extensive experience in defining rail corridors throughout NSW. DSP have recently completed acquisition and subdivision plans for 13km of rail corridor as part of the South West Rail Link. Registered surveyors are all members of the Institute of Surveyors NSW

DSP has a vast amount of skill and experience in capturing and presenting topographic detail within the rail corridor. Typical topographic surveys undertaken include drainage, platform/station upgrades, bridge replacement/renewals and various as- built surveys for both Sydney Trains and external primary contractors.

DSP have developed a monitoring system for roads, railways and structures which can be adapted to any monitoring situation. With the latest equipment and software, DSP can achieve highly accurate results in a real time environment. DSP can assist clients with the preparation of Track Monitoring Plans for your specific monitoring needs.

DSP surveyors are specialised in the installation of rail track components such as turnouts, points and straight rail. DSP can manage works from initial site survey through to the setout, installation and final compliance. DSP have an extensive knowledge of rail construction procedures and experience working with specialised rail maintenance equipment.

3D laser scanning provides clients with comprehensive point cloud data in a timely and cost effective manner. From rail cuttings to industrial plants, DSP can assist with any scanning requirements and provide outputs to suit individual requirements.

Maintaining survey control within the rail corridor is paramount to the integrity of the network. Often during construction and maintenance, survey control marks are destroyed or compromised. DSP can replace and re- establish these marks in accordance with ASA standards. Strict compliance with these standards allows DSP to obtain the high accuracies required for the rail network.

Within the electrified rail network, DSP can provide As-built surveys of track and overhead wire infrastructure for design and maintenance purposes. Data can be supplied in various outputs including Halcrow Spreadsheets or CAD formats.