Gate force testing: what it measures and what a pass proves

The short version

Ask which hazards the test covers, which method was used and what else was inspected. A single green reading is not a complete safety report. If you are responsible for the gate, you need the findings and the actions, not just a sticker.

What a force test actually measures

Impact and clamping force

The first contact produces a changing impact force, often called dynamic force. If the gate keeps pressing afterwards, the remaining load is a clamping or static force. CAME Trade Centres' force testing explainer, checked 24 September 2026, describes both parts of the force trace.

The instrument records how force changes with time. An engineer checks the peak, how quickly the force falls and any remaining pressure. Stopping the motor alone may leave a person held between the leaf and post. HSE's safety guidance, updated 29 October 2024, calls for a response that also avoids entrapment.

Where the test is taken

Heights and gap widths

CAME describes three heights and three gap widths on an undated page, checked 24 September 2026. We left its measurements out: BS EN 12453 and BS EN 12445 are behind a paywall, so we could not verify them. Your engineer should identify the standard edition, test positions and setup in the report.

All areas protected by force limitation

The Door and Hardware Federation (DHF), 10 October 2023, says checking the main closing edge alone is insufficient: every hazardous area relying on force limitation needs testing. Opening movement can crush against a wall, and sliding gates can have hazards at both ends of travel.

The equipment and its calibration

A force tester, or force gauge, has contact faces and a sensor that records the load. The engineer supports and positions it using equipment suited to the selected test. Pressing against the gate by hand cannot produce a valid result.

Ask for the instrument identity and calibration evidence. Calibration checks the instrument against a known reference. CAME's undated page recommends annual calibration, but we have not verified that as a universal requirement. Follow the meter manufacturer's schedule and record its calibration status.

An overdue certificate does not automatically prove every reading is wrong. It leaves uncertainty that the engineer must resolve. Record the equipment used, the test conditions and any adjustments, so later results can be compared fairly.

The limits, and why online numbers disagree

Gate Safe's force testing paper, uploaded March 2025, restates figures of 400N at a 500mm closing gap and 1400N beyond that gap. These figures come from its explanation, not from our reading of the standard. N means newtons, the unit of force.

Even that paper needs care: one heading uses 1600N while its explanatory text uses 1400N. We are reporting its text, not certifying either value as a limit for your gate.

Two supplier explanations also disagree. EasyGates Direct associates 400N with crush and shear areas. CAME associates it with vertical force. Both pages were checked on 24 September 2026. Their different descriptions cannot safely be combined into one rule.

EasyGates' 150N and 0.75-second figures, and CAME's five-second figure, were not verified against the standard either. Both pages were checked on 24 September 2026. Do not use them to set a controller. Ask the engineer to show the applicable criteria.

DHF's October 2023 article names BS EN 12453:2017+A1:2021 and BS EN 12604. Its technical notice names TS 011:2019, TS 012:2019 and the December 2020 TS 11-12 supplement. Older videos labelled TS 011:2016 need treating as historical. Check editions with the issuer before specifying work.

Is force testing a legal requirement?

The law on electric gates in the UK requires a safe outcome under the applicable duties. It does not create a universal annual force test appointment. Gate Safe's March 2025 paper rejects the claim that force testing is itself a blanket legal requirement.

That does not make testing optional when safety depends on limited force. HSE, updated 29 October 2024, requires objective force testing where force limitation is the primary safety method. It applies at delivery and when checking continued safety. DHF's October 2023 explanation supports testing every area protected that way.

For you, the useful question is which safety method the gate uses. Ask the engineer to explain how it has been verified. Keep that explanation with the inspection record.

In July 2010 a five year old girl, Karolina Golabek, was crushed to death by an electric gate in Bridgend. The HSE prosecuted two companies; neither had tested the closing forces. Two children died in gate incidents that year, and the standards were rewritten.

The DHF has measured over 1000 N against a safe edge on numerous gates, against a 400 N limit. A safe edge only works if the gate stops within the distance the edge can be squashed.

Five things a passed force test does not prove

The hinge end is safe

HSE's October 2024 guidance warns that forces increase nearer a swing gate's pivot. The diagram illustrates that relationship without assigning a safe value. A leading-edge pass cannot establish safety in a narrowing hinge gap. Guards, safe geometry or other suitable protection may be needed.

HSE cites Mewes and Mauser's 2003 research on crushing points. It questions whether permitted impact forces always protect vulnerable people. A standard's maximum is not a target to aim for.

Drawing-in points are protected

A sliding leaf passing a fixed support post can draw in clothing or a body part. Gate Safe's March 2025 paper warns that this may not activate the force control. Assess the gap, guarding and nearby railings separately.

Cold weather will give the same result

Gate Safe explains that cold can stiffen a rubber safety edge. Its response may change. Record weather conditions and ask how seasonal use is covered. A photograph of an intact edge cannot establish its response time.

Wind has been allowed for

The same paper warns that wind on a solid gate can change the force. HSE also identifies wind loading as a design issue. A calm-day test cannot answer every question about an exposed entrance.

The control system will respond safely to faults

A working sensor today does not prove a failed cable will be detected tomorrow. DHF's October 2023 article includes fail-safe checks and refers to minimum performance level PL C, category 2. That is its technical restatement. HSE discusses BS EN ISO 13849-1 and the importance of the complete connected system.

Three ways to verify protection

DHF's October 2023 article describes hold-to-run overtravel measurement, force testing, and non-contact presence detection tested with appropriate test pieces. The right route depends on the design. Presence detection must cover the hazardous movement area if it replaces force limitation. An ordinary low beam is not equivalent to that coverage.

How often should a gate be force tested?

Use the instructions, the risk assessment and changes to the installation. EasyGates Direct recommends annual testing in its undated guide, checked 24 September 2026. That is industry advice, not a statutory interval.

Our servicing guide explains how often an electric gate needs servicing. Use the calculator to check when your gate is next due a service after agreeing the interval. It cannot decide when force testing is needed.

What else gets tested?

Read what a full gate safety check covers. It includes structure, suspension, gaps, electrical safety, protective devices and manual release. A CE mark or component Declaration of Incorporation does not replace inspection of the assembled gate.

Who should do it, and what should the report say?

Choose someone with powered gate training and practical experience of your system. Request a report identifying the gate, instrument, calibration, test points, readings, conditions and criteria. It should record defects, adjustments and any retest, with clear advice about continued use.

Compare what a gate safety inspection and repairs cost, then ask gate engineers for a force test quote. Agree the full inspection scope before booking.

Browse the GateHQ engineer directory for other areas.