Semicircular Home Elevator | 400 kg, Curved Cabin

What a curved plan changes in the house

A semicircular elevator is not a round tube with a slice removed. In plan, it is a half disc. The front is a straight chord. The back follows an arc. The automatic center-opening door belongs on the chord, because a landing door needs a straight threshold and a predictable set of guide lines. This one detail determines how the whole installation faces the room.

The arc can be an advantage when the lift sits in a bay, beside a stair, or at the edge of a double-height space. It removes two square back corners from the occupied footprint. The trade-off is less forgiving geometry. A square car can be pushed against a flat wall and trimmed afterward. A curved car needs the enclosure, landing line and walkway to agree before the finish is selected.

Why the door sits on the straight face

The curved side is the viewing side. The flat side is the working side. That split matters to passengers and installers. Passengers enter through a familiar center-opening door, step onto a level sill, and turn toward the panorama. The installer gets a straight datum for the landing frame, door tracks and floor thresholds. Put the door on the arc and every landing becomes a custom curve with a less predictable walking surface. That is why the drawing should show the flat face first, then build the arc around it.

The landing approach needs more attention than the cabin image. On a busy upper floor, the door can open toward a hallway, a gallery or a small landing. The clear walking zone must remain outside the moving parts. If the approach is narrow, the center-opening door helps because both panels retract toward the sides. It does not make the landing wider. The measured opening and the distance from the door to the nearest wall still decide comfort.

Compare three plans without inventing a product dimension

The table below uses a common door-face width W. It compares geometry only. It is not a quotation for this model, and none of the values should replace the approval drawing. The purpose is to show why the half-disc plan leaves a different shape in the room.

Reference geometry only. The semicircular car area is half the area of a circle whose diameter equals the door-line width. Actual cabin and enclosure dimensions come from the approved layout.

When the curve earns its cost

It earns its cost when the view is worth preserving and the plan around the lift is not rectangular anyway. A curved car can work well at a glazed corner, beside a curved staircase, or in a hall where a square box would break the room into smaller parts. It is a weaker choice when the priority is the shortest possible delivery, a standard rectangular shaft, or a simple service access route. A curved enclosure is a building element as much as a lift element.

The architect should settle four items together: enclosure outline, landing approach, door location and maintenance access. Skipping that step and choosing the finish first usually creates a drawing problem later.

What 30 m of travel means for a home project

The published maximum travel is 30 m, or about 98.43 ft. That is a limit, not a target. The project should use the measured finished floor-to-floor total from the lowest landing to the highest. Measuring from slab to slab and later substituting finished floor levels is a common source of error. Stair openings and dropped ceilings can change the final clear rise.

The height range does not give a landing count. Floor-to-floor height varies, so the count and door positions must come from the architectural drawing.

How long the trip takes on paper

At a rated speed of 0.6 m/s, a continuous 30 m run takes about 50 seconds before acceleration, deceleration and door time are counted. That is arithmetic, not a promised door-to-door journey. A shorter run scales proportionally: 15 m takes roughly 25 seconds, and 5 m roughly 8.3 seconds under the same simplification.

The useful question is not whether half a minute sounds fast. It is whether the ride time suits the way the household moves. A lift serving an upper study and a roof terrace carries a different pattern from one moving luggage, groceries and an older resident between several levels. Door dwell, acceleration and landing spacing will shape the experience more than the single speed figure.

What 400 kg supports in practice

The block gives a rated load of 400 kg, equivalent to about 882 lb. Arithmetic at an average adult mass of 75 kg gives about five adults. That calculation is not a passenger rule and does not account for luggage, mobility equipment, concentrated loads or local code requirements. The usable number of people and the approved load distribution must be stated in the project documents.

For a private home, the weight schedule should cover the realistic heaviest trip. Two people plus a wheelchair, a delivery cart, furniture or bags can make the relevant load different from a simple headcount. A 400 kg rating is useful, but it is not a licence to ignore concentrated weight on the floor or the arrangement of the handrail and door.

Why vertical travel is one part of the ride

If the measured rise exceeds 30 m, this model is outside its published range. If the figure is close to the limit, send the actual drawing rather than rounding down. A margin is not a substitute for an approved layout. The panoramic traction range shows how other lift forms deal with long residential runs, but its limits belong to that page rather than this one.

Keep the electrical review with the travel review

The same drawing that fixes the vertical run should locate the supply. This page names 220 V, 50 Hz, single-phase. It does not state current draw or cable size. A long run may change voltage drop and equipment location, while a remote machine or control cabinet may change the maintenance route. These are design questions for the electrical and lift drawings, not details to infer from the service speed.

The final arrangement should put the supply isolator in a reachable place, keep the cable route away from wet or damaged zones, and reserve service access around the equipment. That is the practical meaning of a 30 m specification: every level, every door and the electrical run have to fit together.

Published specifications, read together

The table collects the figures stated in this model's blocks. It separates design descriptions from measurable values. That distinction matters when the page is used for a tender package: a phrase such as “curved panoramic cabin” describes the form, while 400 kg, 30 m and 0.6 m/s are values that can be checked.

Design description versus installation data

“Space-saving” is a design claim, not a promise that the lift fits every corner. It should be tested against the actual plan. A half-disc car can free two back corners, but the straight door face still needs a clear landing. A curved enclosure can follow a bay, but the structural supports, guide rails and service side still need room.

The same caution applies to “panoramic.” The page confirms a panoramic design. It does not publish glass thickness, interlayer type, coating, impact performance, fire rating or acoustic data. Those details need a glazing specification or test evidence. A page image cannot replace either.

What is not on this specification page

The missing items are worth listing plainly. Cabin radius, clear internal width, door clear height, shaft envelope, pit depth, overhead clearance, guide-rail fixing, machine position, current draw, cable size, landing count, maintenance interval and spare-part lead time do not appear in the published blocks. They are project-level facts that need a drawing and a written commercial scope.

Do not turn an architectural allowance into a guaranteed lift dimension. The size of a curved bay is only one input. The enclosure thickness, landing frame, guide clearance, door pocket and structural support all claim part of the opening. The correct sequence is to measure the void, agree the finished floor line, then place the car and door within the approved enclosures.

Certification and acceptance

This model page contains no certification or standard row. No CE, ISO, ASME, CSA, EN or other claim is made here. If the project needs certification, request the certificate holder, product scope, standard, issuing body and validity date. A factory document and an installation approval are not interchangeable.

Shaft, enclosure and landings: the measurements that settle the design

A gearless traction lift needs a controlled vertical run, guide rails fixed to a suitable structure, a landing line at every stop and a safe machine arrangement. The published block gives the drive but no shaft dimensions. The building therefore supplies the controlling information, and the approval drawing translates it into a buildable enclosure.

Five readings to take at the site

1. Finished floor-to-floor height

   Record every level separately. Do not multiply an assumed floor height by a remembered number of floors. Mark where the finished floor will sit after screed, stone or timber is installed.

2. Available plan around the car

   Measure the enclosure or void in both directions and sketch the walls, columns, stairs and doors. A clear room dimension is not the same as a clear lift shaft dimension.

3. Landing approach and door line

   Stand where a passenger will walk toward the lift. Check the wall return, door swing, corridor width and any change in floor level. The flat face of the curved car must remain reachable.

4. Pit and overhead condition

   Depth, slab thickness, beams, services and finish levels all affect the enclosure. If any of these cannot be treated as levelling measurements, mark them as an open item.

5. Machine and maintenance access

   The drive, controller and service route must be reachable without moving furniture or blocking a fire path. The exact machine location is not published on this page and needs a layout.

The enclosure is part of the product interface

A curved car inside a rectangular structural opening is possible only if the space between them is designed. The arc needs a support system, and the door face needs a straight frame. The enclosure may be a purpose-made shaft, a framed void or a structural opening in the building, depending on the approved scheme. The choice changes how loads reach the floor, how the glass is fixed and how the landing thresholds are finished.

Avoid relying on a single “minimum shaft size” copied from another model. Even two semicircular lifts with similar cabins can use different guide-rail brackets, door pockets and machine arrangements. The correct minimum is the outer envelope shown on this model's approved drawing, including tolerance and service clearance.

Questions the structural engineer should answer

Landing level is a finish detail and a safety detail

Every lap of the door track, every sill and every floor finish is part of the accessible path. A small change in floor height can produce a toe-catching lip. A large change can make the landing unsuitable. The approved drawing should state the finished level and tolerance at each stop, then show how the sill and floor covering meet it.

The curve should not be used to hide a stepped or narrow landing. If someone arrives with a suitcase or needs a walking aid, the route into the car must still feel obvious. That is why the center-opening door and the chord are discussed together. The visual curve may attract the buyer, but the door face is what the building has to make work every day.

When measurements are incomplete, the next step is a site survey and marked-up drawing. Send the sketch, floor levels and photographs of every landing to our engineers.

Gearless traction and microcomputer control

The technical block names a gearless traction drive and a microcomputer control system. In a residential lift, that combination affects two things buyers notice immediately: how the car starts and stops, and how precisely it meets each landing. It also affects what the maintenance team needs to reach.

Gearless means there is no reduction gearbox between the motor and the traction sheave. The sheave carries the suspension that moves the car. Fewer mechanical parts can simplify the drive train, but it does not remove the need for correct alignment, rope condition checks or machine-room access. The block does not state whether the machine is inside the enclosure, in a separate plant room, or in another configuration. That is a layout fact, not a generic benefit.

Follow the path from controller to car

The diagram separates the physical drive from the control logic. Read it from left to right: the machine turns the sheave, the suspension transfers movement to the car, and the controller manages calls, door timing and levelling. Hover, tap or keyboard-focus the information markers for definitions. The drawing is schematic and does not set the machine position.

What the gearless arrangement does not tell you

A buyer often reads “gearless” as “maintenance-free.” That is the wrong conclusion. The drive still needs inspection. The sheave, suspension, brake, guide rails and door mechanism each have conditions to check. A gearless machine can reduce the number of mechanical parts in the drive train, but site quality, alignment and service access still determine how long the system remains quiet.

The page also does not state the rope count, machine orientation, traction ratio or braking arrangement. Those details belong to the engineering package. A contractor should not buy fixings or prepare a structural opening from a marketing phrase. The useful request is the approved machine layout with loads, clearances and the service side marked.

The single-phase supply is a design input

The operating voltage is 220 V, 50 Hz, single phase. It does not include an amperage, circuit rating, cable size or earth-fault requirement. At a long 30 m travel, the electrical designer should check voltage drop and the final location of isolation and control equipment.

Send the measured supply, breaker rating, cable route and photographs of the proposed equipment position with the quotation request. If the building uses another supply, identify that mismatch before the order. Changing a completed electrical installation is more expensive than settling it at drawing stage.

Compare the self-supporting gearless lift and the 400 kg glass home elevator. Their structures and drives differ from this model.

Cabin and door: what the curve looks like in use

The cabin is specified as 304 stainless steel with a marble floor and an LED ceiling. The design is panoramic, curved and space-saving. These are material and form choices, not proof of a particular glass assembly. A buyer who needs acoustic, impact or fire performance must ask for the glazing schedule and supporting evidence.

Stainless steel is a practical family for a lift interior. It resists daily contact, suits brushed or reflective finishes, and can be cleaned without the care required by some natural materials. The page does not say which stainless finish is supplied. Brushed and mirror surfaces create different maintenance expectations and different lighting in a curved cabin. That selection should be made from a physical sample, especially beside marble.

The curved view and the straight entrance

The front-to-back relationship is the main design decision. The curve occupies the back and sides in plan. The center-opening door occupies the straight face. The passenger sees the panorama after entering, not while walking through a curved entrance. This arrangement makes the landing predictable and keeps the visual surprise inside the car.

What an automatic center-opening door needs at each landing

A center-opening door is only as good as its landing interface. The two panels need tracks, guides and a clear closing zone. The sill must meet the finished floor cleanly. The landing frame must stay square to the travel path even though the cabin behind it curves.

• Clear approach: leave room for a person, luggage or mobility equipment to stand outside the moving panels.
• Level threshold: finish the floor and sill on the same approved datum; do not rely on a trim strip to hide a step.
• Protected closing edge: the final sensor or edge arrangement should be identified in the approved safety schedule.
• Service reach: the landing equipment and door operator must remain accessible for adjustment.

Materials do more than set a colour

The 304 stainless cabin and marble floor suit a high-use home installation, but the finish schedule still matters. A polished stainless surface shows fingerprints and reflections. A brushed surface hides small marks and softens the view into the cabin. Marble needs a non-slip and joint arrangement that suits indoor footwear, cleaning and the lift threshold. The LED ceiling needs a service route and a light colour that does not clash with the surrounding room.

These selections should follow the physical samples, not a monitor. A curved cabin changes reflections along the arc, so a finish that looks calm on a flat board may become busy when wrapped around the car. Review the sample in the actual light if possible, and include the handrail, floor nosing and door face in the same review.

Finish approvals belong in the drawing package

Record the stainless pattern, marble type, joint direction, LED colour and door finish on the approved schedule. Do not infer that another page's finish is available here. The hydraulic glass capsule lift and the circular glass lift start from different structures.

Safety: one named device, one complete project schedule

The published technical block names an emergency stop button. It does not publish a complete safety-device list. That sentence should be read literally. This page cannot claim a particular door interlock, overspeed device, brake monitor, alarm, rescue system or power-backup arrangement without a source. The project safety schedule fills that gap.

An emergency stop button lets a passenger stop the lift deliberately. Its location, marking and reset method should be checked at handover. A button on a drawing is not enough. Test that it can be reached without opening the door, that the symbol is visible, and that the operating instruction is written in the language of the people who will use the lift.

What the approved safety schedule should show

This list is a review framework, not a statement of what the model includes. The exact devices, functions and standards depend on the final design and the rules that apply where the lift is installed. Ask for the safety schedule, wiring diagram and test sheet as one package. Comparing those documents is more useful than reading a list of feature icons.

Door safety begins with the landing

A center-opening automatic door has a straight closing line. That line should be visible, unobstructed and protected. The floor and sill must make the path obvious. A passenger should not have to step around a planter, chair or decorative screen while the door is operating. The panel edge should not close on a handbag, clothing or a person moving slowly.

The project documents should state the reopening behaviour and the test method. On site, confirm that both panels move together and that an obstruction produces the expected response. Do not test a moving door by forcing it by hand. Use the approved test procedure and record the result.

Acceptance checklist

Do not confuse protection with certification

A functional device and a valid certificate answer different questions. A door interlock can be tested on site; a certificate describes the scope and conformity of a product or process. This model page has no certification row, so the page does not make a conformity claim. When a certificate is required, request the certificate holder, product family, standards, issuing body and expiry date, then match the installed equipment to that scope.

The local authority may require inspection by an approved body. Put that requirement in the project schedule from the start because it can change drawing approvals and access arrangements.

Installation sequence from survey to first ride

A residential lift arrives after the building has made its most expensive decisions. The safe sequence therefore begins before manufacture: measure, approve, build the interface, install, commission and hand over. Reversing that order turns small dimension changes into demolition work.

1. Survey the real position

   Measure every finished floor level, the plan around the car, the landing approaches and the supply. Photograph the full vertical route from the lowest to the highest stop.

2. Approve the arrangement drawing

   Fix the cabin outline, door face, enclosure, guide rails, machine location, controller and service access. Mark the pit, overhead, wiring and landing interfaces.

3. Build the building interface

   The builder, electrical designer and lift supplier work from the same approved drawing. Changes to walls, openings, floor levels or the supply route should return to that drawing before work continues.

4. Inspect before installation

   Check the clear enclosure, floor levels, support points, electrical isolation and access. A pre-installation inspection catches a wrong opening while it is still cheap to correct.

5. Install and protect the finishes

   Set guide rails, car, door equipment and controller. Protect the stainless cabin, marble floor and glazing during the remaining building work. Keep the landing approach clear.

6. Commission and record

   Test each landing, door cycle, call, level stop, emergency stop and documented safety function. Record the readings and conditions, then explain the passenger and rescue procedures.

What has to be ready before delivery

Delivery and contract timing

The commercial block lists a delivery period of 40 working days. It does not state when that period starts. A purchase order, drawing approval, technical clarification, payment stage or material confirmation could each be the trigger. Put the trigger and any buyer dependency into the contract so the delivery date has a measurable start.

Export packing is stated as a non-fumigation wooden box. Before delivery, ask how the packed sections will be moved into the building and whether the crate can remain on site. A curved cabin and its enclosure may arrive in several parts. The route needs turning space, floor protection and a temporary storage area that keeps the goods dry.

The handover is part of installation

Commissioning should finish with evidence: as-built layout, supply readings, safety tests, door adjustments and finish condition. Revisit every landing approach after floor finishes are complete and correct anything that changed from the drawing.

Upkeep, warranty and the questions to settle before handover

The model block states a one-year warranty. That is the only service period published on the page. It does not state an inspection interval, a response time, a spare-part lead time or a list of wear parts. Those items belong in the maintenance and commercial documents. Treating the warranty as a maintenance plan would leave the owner without a schedule once the first year ends.

What the one-year warranty should identify

The original purchase documents should also state whether warranty work depends on regular maintenance, who is allowed to perform it, and what happens to coverage if another contractor adjusts the equipment. These clauses matter more in a private house, where there may be no facilities team to keep a maintenance file.

Three habits that reduce avoidable problems

Keep each landing clear of furniture and stored items. The curved cabin may look like an architectural feature, but the landing path is working space. A chair placed outside the door can obstruct the approach or prevent the panels from operating as intended.

Keep water and cleaning chemicals away from the controller and door tracks. Marble and stainless can be cleaned, but liquid should not be allowed to collect at the sill or run into the machine area. Use the finish cleaning instructions supplied at handover.

Report a change in sound or stopping position early. A new scrape at one landing, a late stop, a slower door or a repeated reset is useful maintenance information. Write down when it happens and which landing is involved. That is more useful than describing the lift as “acting strangely.”

What to request for a maintenance file

• The approved as-built drawing and electrical diagram.
• The commissioning record with landing-level and safety-test results.
• A maintenance schedule that states intervals and tasks.
• A wear-part list with lead times and storage recommendations.
• Warranty terms, start date and a named service contact.
• Cleaning and damage-protection instructions for the cabin materials.

Until those documents are issued, this page will not invent a monthly inspection, a spare-part interval or a guaranteed response time. A clear service scope is more useful than a promise that cannot be verified. Contact our engineers to request the project maintenance template and confirm who will service the lift locally.

When a longer travel changes the maintenance plan

A 30 m run may have more landings and door interfaces than a two-stop lift. The maintenance plan should follow the actual stop count. Access to the machine, rope path and controller must remain safe after the finishes are closed.

Questions buyers ask about a semicircular home elevator

These answers use the published facts and separate them from installation decisions. Missing dimensions or service intervals point to the document that should provide them.

Printable survey, converter and quotation brief

The quickest way to turn a product image into a usable review is a measured survey. The list below covers ten readings that answer the form, travel, landing and electrical questions. Print it, carry it to the building, and write each reading down where it was taken. A clean enquiry with real dimensions saves a round of drawings.

Convert mixed drawings before sending them

Architectural drawings may use millimetres, metres or feet, while lift documents often use metric values. Convert the reading rather than asking someone to guess. These calculators use the standard conversion factors and round to two decimal places. They are reference tools; the final dimensions still need checking on the approved drawing.

What changes the technical review

What comes back after the survey

A technical response should include an arrangement drawing, open questions, a commercial scope and the certificates or test documents for the requested evidence level. Also send photographs of each landing and mark any dimensions that were estimated rather than measured.