# Can someone help me to design a boat inclined lift ?

• davekardle
In summary, a canal operating company is proposing to build an inclined plane to lift boats between two points with a vertical height difference of 55m. The proposed design is based on a successful inclined plane in North East France and will use a moving canal lock supported by 32 wheels and counterbalanced by two groups of 14 cables. The initial design proposes that the moving lock will be 25T heavier when descending and 25T lighter when ascending. The independent consultancy has been hired to check the company's calculations, including the linear length of the canal track, velocity of the moving lock, water savings per lift, and cost of each lift. Additional information, such as the dimensions and mass of the moving lock, fuel consumption for different types
davekardle
I'm clueless how to start!. Here is the description:
A canal operating company is proposing to build an inclined plane to lift boats between
two points with a vertical height difference of 55m. Currently the boats have to travel a
distance of 6km through 19 canal locks to achieve the same vertical height.
An example of a successful inclined plane at St Louis/Arzviller, in North East France, will
be used as the model for the design. Details of this inclined plane are given in the
following web sites:
en.wikipedia.org/wiki/Saint-Louis-Arzviller_inclined_plane
The company proposes to lift a moving canal lock which has the same dimensions as the
existing static locks on the canal. The lock is supported on 32 wheels across 4 axles
which run on rails. The moving canal lock will be counterbalanced by two
counterweights attached to the moving canal lock by two groups of 14 cables winding
onto two winch drums at the top of the structure. The winch drums are powered by two
electric motors which power the start of the lift and control the speed of the lock or
counterweight in its descent.
Initial design work has been completed which proposes that:
When descending the incline the moving canal lock is 25T heavier than the total mass of
the counterweights and when ascending the incline the moving canal lock is 25T lighter
than the total mass of the counterweights.
The moving lock is sealed at either end by a solid steel plate forced onto neoprene seals
by hydraulic rams exerting 5T pressure

As an independent consultancy you have been employed to:
(i) check the calculation work of the canal company. You must present to the
canal company a set of calculations to confirm :
(a) The linear length of the canal track associated with the proposed angle of the
incline
(b) The velocity of the moving canal lock
(c) The water saving achieved per lift compared to original series of locks
(d) The cost of each lift
Vertical displacement 55m
Moving canal lock size 40.0m long, 6m wide, 3.5 m height allowing 0.5m of height above
the water level
Mass of empty lock 300T
Density of water 1kg / m3
Angle of incline 24.25
o
Electric motor power 90kW each (operating at 70% efficiency)
Transit time ascent and descent ) 4 minutes
Average displacement of loaded pleasure boat 20T
Average displacement of commercial barge fully laden, 400T including 300T of load
Pleasure boat average fuel consumption 0.2 litres /km
Laden commercial barge, average fuel consumption 10 litres /km
Fuel oil = dodecane C12 H26 , Density = 0.755g/cm3
, long term BOD high
Cost of diesel fuel to power barges and pleasure craft=£1.50 per litre
Cost to users of using incline plane =£0.1 per ton of loaded boat for each lift.
Cost to canal company of replacement water = £0.10 per m3
Cost of electricity £0.20 per unit (1 unit =1 kWh)
A duplicate moving lock (kept as a spare) is located 25m away from the incline plane at
the same level as the bottom canal
Estimated capital cost of build £1.5 million

A sketch is usually a good way to start.
The length of the incline can be calculated with geometry. This, together with the required time, gives you the velocity as well.
For c, consider how much water is required for every cycle of a lock.
d is more work, I think you are supposed to calculate the electricity costs.

## 1. What is a boat inclined lift?

A boat inclined lift, also known as a marine inclined elevator, is a mechanical system used to move boats from one body of water to another at different elevations. It typically consists of a platform or cradle that can be raised or lowered along a rail or track.

## 2. How does a boat inclined lift work?

A boat inclined lift uses a motorized winch or hydraulic system to raise or lower the platform along the track. The boat is positioned on the platform and secured with ropes or straps. The platform is then raised or lowered, moving the boat to the desired elevation.

## 3. What are the benefits of using a boat inclined lift?

Boat inclined lifts offer several benefits, including convenience, efficiency, and safety. They allow for easy transfer of boats between bodies of water, eliminate the need for manual lifting and hauling, and reduce the risk of damage to the boat or surrounding area.

## 4. How do I choose the right boat inclined lift for my needs?

When choosing a boat inclined lift, consider the size and weight of your boat, the distance it needs to be lifted, and any specific features you may need, such as a remote control or adjustable platform. It's also important to consult with a professional to ensure the lift is installed correctly and meets all safety standards.

## 5. How do I maintain a boat inclined lift?

Regular maintenance is essential for keeping a boat inclined lift in good working condition. This includes checking for any wear or damage on the track and platform, lubricating moving parts, and replacing any worn or damaged components. It's also important to follow all manufacturer instructions and have the lift inspected by a professional at least once a year.

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