English for Engineering: 1.5 Emphasising technical advantages

What elevator components do you remember?

Collaborative Reading of the Speaking Exercise 6a on page 8 to introduce the modal verbs 'could' and 'would'

🏗️ Modal Verbs in Elevator Engineering

📄 Elevator Incident Report

A power failure could cause the elevator to stop.
If the main cable snapped, the safety brake would activate.
The emergency system should be inspected every 6 months.

🔹 COULD = Possibility / Risk

Use could when something is possible but not certain.

⚙️ Elevator Examples:

A voltage fluctuation could stop the elevator.
A worn cable could break under heavy load.
A faulty sensor could cause door malfunction.
Moisture in the shaft could damage electrical components.

👉 Used in risk assessment and troubleshooting.

Meaning: It is possible, but not guaranteed.

🔹 WOULD = Hypothetical Result (Conditional)

Use would to describe what happens in a specific condition.

Structure:

If + past simple → would + base verb

⚙️ Elevator Examples:

If the main cable snapped, the safety brake would activate.
If the cabin were overloaded, the alarm would sound.
If power failed, the emergency system would engage.
Without maintenance, the system would deteriorate quickly.

👉 Used in system design explanation and cause-effect analysis.

Meaning: This is the expected result in that situation.

🔹 SHOULD = Obligation / Recommendation / Expectation

Use should for safety rules, standards, and good practice.

⚙️ Elevator Examples:

The emergency brake should be inspected every six months.
The elevator should not operate during maintenance.
Technicians should wear protective equipment.
The system should function smoothly after calibration.

👉 Used in maintenance manuals and safety regulations.

Meaning:

It is recommended.
It is required by standards.
It is the correct procedure.

Summary chart

Modal	Meaning	Level of Certainty	Use in Elevators
Could	Possibility	Uncertain	Risk / potential problem
Would	Hypothetical result (in a condition)	Predictable	System behavior
Should	Obligation / expectation	Recommended / Normal result	Rules & standards

🔎 Direct Comparison (Same Situation)

Situation: Overloaded Cabin

The cabin could stop between floors.
→ Possible outcome.
If the cabin were overloaded, it would trigger the overload alarm.
→ Designed system response.
The cabin should not exceed the maximum load capacity.
→ Safety rule.

🎯 Simple Rule for Elevator Students

Ask yourself:

🔹 Is it a possible problem? → COULD
🔹 Is it a predictable result in a condition? → WOULD
🔹 Is it a rule, obligation, or recommendation? → SHOULD

🛠️ In Technical Documents