Krystian Golebiewski  R.P.L.S.

kg@brittain-crawford.com

David O'Connell - Drafting

doc@brittain-crawford.com

Kerri Urbaniak - Research

ku@brittain-crawford.com

Chad Crawford - Drafting

crc@brittain-crawford.com

Danny Garrett - Drafting

cdg@brittain-crawford.com
Jamie Schad- Admin. assistant  
admin@brittain-crawford.com

Josh Urbaniak - Drafting   

jtu@brittain-crawford.com

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Last updated: 07/25/2019 by: KG
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Get a survey quote:

Email us the property full address, with some additional information like: Lot and Block number, subdivision name, acreage of area to be surveyed, attach a map if available. Click to get the quote.

List of contacts:

James L. Brittain  R.P.L.S.

jlb@brittain-crawford.com

Stuart F. Smith  R.P.L.S   

sfs@brittain-crawford.com

Chris L. Blevins  R.P.L.S.   
clb@brittain-crawford.com

Drone                Go to Main Page

We now offer an aerial mapping using a DJI drone.

It is a perfect tool for any vertical structure, like bridge,  building, water tower, transmission line tower etc., that  would otherwise be difficult to survey using conventional  methods. It is also a handy tool, when you don't want your  employees to be at risk of injury in the high traffic areas,  like busy intersections, or a highway. We have a full time licensed  drone pilot, FAA certified.

All data can be captured by a drone, and with the support of the ground control, using a post-processing software, it is transferred into a high density point cloud, where each individual point has its own x,y,z, value, as shown on the image below.

 

In this particular example of the water treatment plant in Texas, a series of 178 aerial images were taken, at the altitude of 120 feet above ground level.  The low altitude has allowed us to achieve very high accuracy (mean RMS error = 0.038 ft),  creating a point cloud of over 18 million points, of which each points has it's own X,Y,Z value.

 

During post-processing, three dimensional line work is created, and exported to CAD. 

Low altitude of the camera, allowed us to create a high resolution orthophoto image, where Average Ground Sampling Distance (GSD) is 1.12 cm / 0.44 in (pixel size), resulting in clear detail of the entire site.

Surveying Lake  Reservoir Control Section.

Aerial images captured using Dji drone

 

Point cloud based on the collected photographs.

AutoCAD 3D renderings of the surveyed structures.