Award Date


Degree Type


Degree Name

Master of Engineering (ME)


Civil and Environmental Engineering

First Committee Member

David E. James

Number of Pages



Dust suppression by water application constitutes a major part of the total construction water use in Clark County, Nevada. This study investigates the efficiency and uniformity of water application from water trucks by characterizing their water spray patterns. Two field methods were developed to evaluate water application, the 'moving truck method or trench method' and the 'stationary truck method or gutter method'. The moving truck method adequately simulated a construction site but was time-consuming. The field portable stationary method provided rapid feed back about spray distribution. Various nozzles types, their different geometric configurations and simple design modifications of the existing nozzles were tested for possible uniformity improvement. Major improvements in spray uniformity were achieved by adjusting nozzle slot width, and fan and orientation angles. These adjustments were implemented by simple modifications to nozzle slots and spray-control collars.


Characterization; Improve; Modifications; Nozzle; Nozzles; Proposed; Spray; Truck; Uniformity; Water

Controlled Subject

Environmental engineering; Civil engineering

File Format


File Size

4915.2 KB

Degree Grantor

University of Nevada, Las Vegas




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