Rob Wooding & Associates

Aerial Survey Consultants

Contract Specifications

The first step is always a discussion with the client to determine his needs.  This may happen by phone or email and for larger projects one or more meetings and/or a site visit may be necessary.  By following a set questionaire that has been crafted out of many years experience, most variable items are covered in this preliminary phase. 

Mapping is now a very diverse (and exciting) field.  There are photogrammetric, lidar and radar techniques. Within photogrammetry there are large, medium and small format cameras. Some lidars are well suited to quantifying vegetation and others handle built environments better.  Some can penetrate water.  Platforms to carry this equipment range from high performance turbine aircraft through normal piston aircraft to ultralights and UAVs. Fixed wing and rotary wing.  In addition, extraneous factors such as weather, physical risks and bureaucratic obstructions have a major impact on what equipment should be used and how and when. 

All these factors are examined then a draft specification is prepared that will meet the technical requirements, within the required time constraints.  An estimated budget is also offered.

It is our philosophy to as far as possible specify what must be done and never, or very rarely, how it must be done.  This serves two purposes.  Firstly, it leaves the door open for innovative proposals and secondly, it enables the competence of the bidder to be evaluated.

After it has been accepted by the client a final specification is created.  Depending on the size and nature of the job, tender documents may also be prepared.

The costs for this service are typically in the order of 2.5% of the estimated contract price on large jobs, rising to 5% on small jobs.