Construction Site Safety and Coordination

Why Construction Site Safety Matters for Survey Crews

Survey and stakeout crews work in one of the most hazardous environments in any trade: the active construction site. Heavy equipment moves constantly, excavations open and close, and materials are lifted overhead. Unlike office GIS work, field stakeout puts you within feet of these hazards. Understanding the major hazard categories, the personal protective equipment (PPE) required, and how to position yourself safely is not optional — it is a condition of entry to every field session in this course and a core expectation of every employer who hires survey technicians.

The Three Primary Hazard Categories

Struck-By Hazards

A struck-by event occurs when a worker is hit by a moving object — a vehicle, a swinging crane load, a thrown tool, or debris ejected by equipment. OSHA identifies struck-by incidents as one of the leading causes of construction fatalities. Survey crews are especially exposed because their work requires them to stand still, focus on instruments, and sometimes turn their backs to traffic or equipment to read rod shots or check data collectors.

Control measures for struck-by hazards include:

• Wearing high-visibility (ANSI Class 2 or higher) vests at all times on active sites
• Establishing a communication protocol with equipment operators before beginning work in their swing radius
• Positioning the instrument person so they face oncoming traffic whenever possible
• Never entering the swing radius of an excavator or crane without a spotter and operator acknowledgment
• Using flaggers or traffic control when working near roadways

Caught-In / Caught-Between Hazards

Caught-in or caught-between events happen when a worker's body or clothing is caught in, on, or between objects — rotating machinery, pinch points between a vehicle and a fixed structure, or collapsing trench walls. For survey crews, the most relevant caught-in risks are proximity to rotating augers, compactors, and concrete mixers. Loose clothing, long hair, and dangling lanyards increase risk.

Control measures include keeping a safe distance from all rotating machinery, securing loose clothing and hair, and never reaching into an operating machine to retrieve a pin, stake, or data cable.

Excavation and Cave-In Hazards

Excavation hazards are among the most deadly on any site. An unprotected trench can collapse with little or no warning. Soil weighs approximately 100 pounds per cubic foot; even a small cave-in can pin and suffocate a worker within minutes. OSHA regulations require protective systems — sloping, shoring, or trench boxes — for excavations deeper than 5 feet, and a competent person must classify the soil type before workers enter.

Survey crews frequently must take shots inside or at the edge of open excavations to set grade stakes or verify as-built elevations. Safe practices include:

• Never entering an unprotected excavation without written authorization from the competent person on site
• Keeping spoil piles at least 2 feet from the trench edge
• Using a range pole extended from outside the trench when possible instead of entering
• Knowing the location of all underground utilities before any excavation begins (call 811)

Personal Protective Equipment for Active Construction Sites

The minimum PPE for any survey crew member on a construction site is:

• Hard hat (ANSI Z89.1 compliant) — protects against falling objects and overhead strikes
• Safety glasses (ANSI Z87.1 compliant) — protects against dust, debris, and projectiles
• High-visibility vest (ANSI/ISEA 107 Class 2 minimum) — makes you visible to operators and drivers
• Steel-toed boots (ASTM F2413 compliant) — protects feet from dropped equipment and stakes

Site-specific hazards may require additional PPE such as hearing protection near loud equipment, gloves when handling rebar or stakes, and hard-soled boots with ankle support on rough terrain. Always review the site-specific safety plan before your first visit.

The Job-Hazard Analysis (JHA) and Pre-Task Briefing

Before beginning any stakeout task, the crew chief leads a pre-task safety briefing using a Job-Hazard Analysis (JHA) form. The JHA lists each task step, the hazards present at that step, and the controls in place. All crew members review and sign the JHA before work begins.

The pre-task briefing should cover:

1. The day's stakeout scope — what you are setting, where, and in what order

2. Active equipment in the work zone and the communication plan with operators

3. Emergency procedures — where the first-aid kit is, who calls 911, the nearest hospital

4. Any changes to site conditions since the last visit

The safety monitor's role during field work is to watch for hazards the instrument operator and rod person cannot see while they are focused on measurements. This is not a passive role — the safety monitor speaks up immediately when a hazard enters the work zone.

Surveyor Responsibilities Near Active Machinery

A common misconception is that equipment operators are solely responsible for avoiding workers. In reality, everyone on the site shares responsibility. Survey crew members must:

• Make eye contact with an equipment operator and receive a clear acknowledgment before entering any area the machine can reach
• Use hand signals or radio communication agreed upon at the start of the shift
• Never assume an operator can see you — cab visibility is limited and operators concentrate on their load
• Step well clear of any equipment that begins to move unexpectedly

Entering the Field: Requirements for This Course

No student enters any field session without completing the OSHA 10 Construction Outreach training and holding a valid OSHA 10 card (or a documented equivalent accepted by the instructor). A written safety quiz score of 80% or higher is required before the first field session. These requirements exist because the skills in this lesson are directly assessed on both the NSPS CST Level 1 exam and in the professional judgment expected of all survey technicians.