How to Choose the Right EWP for Your Project: A Comprehensive Guide

Selecting the appropriate Elevating Work Platform for your project is crucial for safety, efficiency, and cost-effectiveness. With various types available, from scissor lifts to self-propelled boom lifts, choosing the right equipment requires careful consideration of multiple factors. This comprehensive guide will walk you through the essential considerations when selecting an EWP, ensuring your project proceeds safely while maximising productivity.

Understanding Different Types of EWPs

The first step in selecting the right EWP is understanding the various types available and their specific applications.

Scissor Lifts

Scissor lifts provide a stable, spacious platform that extends vertically. They’re ideal for projects requiring multiple workers or materials on the platform simultaneously. With their larger work area and higher weight capacity, scissor lifts are perfect for indoor maintenance, installation work, and construction projects on flat, level surfaces. Most electric scissor lifts can be driven at full height, making them efficient for work along corridors or in large open spaces.

Self-Propelled Boom Lifts

These versatile machines come in two main varieties: telescopic (straight) boom lifts and articulating (knuckle) boom lifts. Telescopic booms provide excellent horizontal outreach and are ideal when you need to access work areas over obstacles. Articulating booms offer greater flexibility with their multiple pivot points, allowing access to hard-to-reach areas or work that requires manoeuvring around obstacles. Both types are suitable for outdoor work on rough terrain and can handle various ground conditions.

Truck-Mounted EWPs

Commonly used by utility companies and sign installers, truck-mounted EWPs provide excellent mobility between work sites. They typically offer significant height capabilities and are ideal for projects requiring work at multiple locations throughout the day. These units require stabilisers to be deployed before operation and are especially useful for roadside work or projects with multiple elevated locations.

Trailer-Mounted EWPs

These towable platforms are highly portable and economical options for contractors who need occasional access to height. They can be towed behind a vehicle to various locations, making them versatile for maintenance work, painting, or electrical installations. Outriggers must always be deployed before operation to ensure stability.

Vertical Mast Lifts

Vertical mast lifts are compact units designed for indoor use where space is limited. They provide straight vertical elevation with minimal footprint, making them ideal for warehouse stocking, maintenance in tight spaces, or retail display work.

Key Factors for Selecting the Right EWP

Working Height Requirements

One of the most critical factors in choosing an EWP is the maximum working height needed for your project. The working height is typically the platform height plus an additional 2 metres (allowing for operator height and reach). Accurately assess the highest point you’ll need to access and select an EWP with sufficient height capability while avoiding oversized equipment that may incur unnecessary costs.

Horizontal Reach Needs

For projects requiring access over obstacles or reaching across spaces, horizontal outreach becomes a critical consideration. Articulating and telescopic boom lifts offer varying degrees of horizontal reach, with some models extending 20 metres or more from the base. Consider any obstacles between the placement point and the work area when determining reach requirements.

Weight Capacity Requirements

Every EWP has a specified weight capacity (Safe Working Load or SWL) that must not be exceeded. Calculate the combined weight of workers, tools, and materials that will be on the platform simultaneously. Remember that capacity may be reduced when the platform is extended to maximum reach, particularly with boom lifts.

Indoor vs Outdoor Use

The work environment significantly impacts EWP selection:

For indoor work, consider:

• Electric-powered units to avoid emissions
• Machine dimensions relative to doorways and aisles
• Floor load capacity (especially on suspended floors)
• Clearance height when stowed.

For outdoor work, consider:

• Terrain conditions and necessary gradeability
• Wind rating (minimum 12.5 m/s wind rating)
• Power source (diesel for extended outdoor use)
• Ground conditions and potential need for outriggers or spreader plates.

Surface Conditions

The ground or surface where the EWP will operate is crucial for safety and performance:

• Hard, level surfaces (concrete, asphalt): Most EWPs can operate safely
• Soft ground or uneven terrain: Requires rough terrain models with appropriate tyres and gradeability
• Sloping surfaces: Check manufacturer’s gradeability specifications and tilt sensor limits
• Suspended floors: Verify floor load capacity against the EWP’s weight distribution

Access Constraints

Consider how the EWP will access the work area:

• Doorway dimensions and height restrictions
• Elevator capacity if accessing upper floors, or ability to crane the EWP to a higher level
• Ramp inclines and surface transitions
• Weight restrictions on access routes
• Transport requirements between sites

Power Source Considerations

EWPs typically use one of three power sources, each with distinct advantages:

• Electric: Ideal for indoor use with zero emissions, quieter operation, and lower operating costs
• Diesel: Better for outdoor use, longer run times, and typically more powerful
• Hybrid/Bi-Energy: Offers flexibility with both electric and combustion engine options

Project Duration and Frequency

Consider how long and how often you’ll need the EWP:

• Short-term, one-off projects may be more economical with rental equipment
• Regular, recurring needs might justify purchasing or long-term leasing
• Project duration affects choice between battery-powered units (with limited run time) versus fuel-powered options

Safety Considerations

Harness Requirements

Safety harness use requirements vary by EWP type:

• Boom lifts (articulating, telescopic, truck-mounted, trailer-mounted): Harness systems with lanyards attached to certified anchor points are mandatory
• Scissor lifts: Harness requirements depend on risk assessment and manufacturer recommendations
• All harness systems must meet AS/NZS 1891.1 standards

Wind Exposure

All outdoor EWPs have maximum wind ratings (typically marked on the machine). Never operate an EWP in wind conditions exceeding manufacturer specifications. Indoor-rated EWPs should never be used outdoors. Consider using an anemometer to accurately measure wind speeds at elevation, as wind speed increases with height.

Electrical Hazards

When working near power lines, strict safety protocols must be followed:

• Maintain minimum approach distances (at least 4 metres from any electrical supply)
• Consider insulated EWPs specifically designed for electrical work
• Implement exclusion zones and safety observers when working between 4-6.4 metres from power lines
• Develop emergency procedures for accidental contact with power lines

Site-Specific Hazards

Each project presents unique hazards that influence EWP selection:

• Pedestrian traffic: May require barriers, exclusion zones, or spotters
• Overhead obstacles: Influence height and type of EWP needed
• Underground services: May affect where outriggers can be placed
• Confined spaces: May require specific ventilation or compact equipment

Operator Competency Requirements

New Zealand regulations require operators to be properly trained in EWP theory and competent in the specific type of EWP they will use. EWP unit standards are optional; equivalent or better training meets the requirements.

Operators must also be familiar with each specific model they use, including understanding all controls, safety features, and emergency procedures.

Compliance and Certification Requirements

All EWPs used in New Zealand must meet specific compliance requirements:

• Six-monthly inspection certificate from a competent person
• Logbook with maintenance records and pre-operation checks
• Compliance with standards such as AS/NZS 1418.10 or equivalent international standards
• Proper markings, including rated capacity, maximum wind rating, and operating instructions
• Emergency descent procedures displayed at ground controls

Cost Considerations

When evaluating costs, consider:

• Rental rates versus purchase costs
• Transport to and from site
• Fuel or charging requirements
• Operator training expenses
• Maintenance and certification costs
• Insurance implications
• Project timeline and efficiency gains from appropriate equipment

Conclusion

Selecting the right EWP for your project requires balancing numerous factors, including height, reach, capacity, environment, and safety considerations. By systematically assessing your project requirements and matching them to the appropriate EWP specifications, you can enhance productivity, maintain safety compliance, and optimise project costs. Remember that proper planning, operator training, and adherence to safety protocols are just as important as selecting the correct equipment.

Investing time in careful EWP selection pays dividends through improved efficiency, reduced risks, and successful project outcomes. When in doubt, consult with EWP suppliers who can provide specialised guidance based on your specific project requirements.