By the end of this chapter, you will be able to:
Mastering these skills will help you carry out precise and safe engineering surveys, which are essential for successful construction and design projects in the real world.
Surveying for water engineering projects in Kenya requires rigorous attention to site safety, particularly when working in remote or rugged terrain near water sources or infrastructure. Personnel must be equipped with appropriate personal protective equipment (PPE) to prevent injuries from environmental hazards such as dust, sharp objects, or chemical exposure. This chapter section examines critical PPE components, dust coats, closed leather shoes, and safety goggles, and their use within water engineering survey operations.
Site safety is paramount for water engineers conducting surveys, as fieldwork often exposes them to physical, chemical, and biological hazards. Proper PPE reduces risk and ensures compliance with Kenyan occupational safety standards, such as those outlined by the National Environment Management Authority (NEMA) and the Occupational Safety and Health Act (OSHA). Effective use of PPE enhances both individual safety and project efficiency by minimizing accidents and downtime.
Dust coats serve as a first line of defense against dust, dirt, and minor chemical splashes commonly encountered during water engineering surveys, especially in arid or dusty environments such as construction sites near dams or boreholes.
Closed leather shoes are essential for foot protection during water engineering surveys, where uneven terrain, sharp objects, and wet surfaces are common hazards.
| Name | Specification | Use |
|---|---|---|
| Closed Leather Shoes | Full-grain leather upper, steel toe cap, slip-resistant sole, water-resistant, ankle support | Protect feet from punctures, impacts, slips, and wet conditions during fieldwork |
Proper maintenance includes regular cleaning to remove mud and chemicals, drying to prevent leather cracking, and inspection for sole wear or damage. Shoes with compromised integrity should be replaced promptly to maintain safety.
Safety goggles protect surveyors’ eyes from dust, flying debris, and chemical splashes encountered in water engineering environments, such as during soil sampling near treatment plants or when inspecting filtration units.
| Name | Specification | Use |
|---|---|---|
| Safety Goggles | Polycarbonate lens, anti-fog coating, adjustable strap, impact resistant | Shield eyes from dust, splashes, and flying particles during field activities |
Maintenance involves cleaning lenses with appropriate solutions to avoid scratches, checking for strap elasticity, and storing goggles in protective cases to avoid damage.
A water engineer working near a dam site notices dust coats have tears and stains. List six assessment steps to determine if the coats are still safe for use. (6 marks)
Calculate the minimum safety shoe sole thickness needed if a surveyor is walking on rocky terrain where sharp stones can exert a pressure of 3000 Pa on their feet. Assume the shoe sole material can safely withstand 5000 Pa per mm thickness. (3 marks)
During a water treatment plant survey, a chemical splash reaches an engineer’s eye protection. Describe the specifications and features the safety goggles should have to prevent injury. (6 marks)
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Create a free accountThis chapter covers essential aspects of conducting an engineering survey with a strong focus on site safety and the proper use of personal protective equipment such as dust coats, closed leather shoes, and safety goggles. It introduces a variety of surveying instruments including tapes, chains, ranging rods, RTK technology, GIS software, theodolites, dumpy levels, total stations, and levelling staffs, highlighting their roles and assessments in fieldwork. The process of direct linear measurement is explained through chainage techniques and accurate recording methods. Leveling and profiling procedures are detailed with steps on setting up instruments, booking observations, and reducing levels to obtain precise elevation data. Different types of engineering surveys are discussed, emphasizing topographical and construction surveys and their specific applications. Finally, the chapter addresses the preparation of profile reports, focusing on plotting survey data and the use of interpolation to estimate intermediate values. This comprehensive overview equips students with the knowledge and skills necessary to carry out effective and safe engineering surveys.
A surveyor measures a straight water pipeline route using a 30 m tape. The total distance measured is 450 m. How many full tape lengths did the surveyor use? (2 marks)
During a leveling exercise at a water treatment plant site, the height of the instrument (HI) is set at 1.5 m above the ground. The staff reading on a benchmark is 1.23 m. Calculate the reduced level (RL) of the benchmark if the benchmark RL is 120.00 m. (3 marks)
At the start of this chapter we promised you would be able to:
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