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Supporting the Cross Island Line (CRL) in Singapore is primarily based on the extensive benefits it will bring to the country's public transport network, commuters, and long-term urban development

. The CRL is designed to be the longest fully underground MRT line in Singapore, connecting the eastern, western, and northeastern parts of the island, and integrating with almost all other existing MRT lines.

Commuter benefits

Shorter travel times: The CRL will offer more direct routes, drastically cutting cross-island travel times for many commuters. For example, a trip from

Punggol

to

Pasir Ris

could take just 15 minutes, down from 40 minutes by bus. Similarly, a journey from

West Coast

to

Ang Mo Kio Industrial Park

is projected to be halved.

Enhanced connectivity: By linking major residential, industrial, and recreational hubs, the CRL will improve accessibility for over 600,000 daily commuters in its initial years. Areas that currently lack MRT access, such as

Sunset Way

and

West Coast

, will be served by the new line.

Reduced congestion: The CRL will ease the passenger load on existing, busy lines like the East-West and North-South lines, especially during peak hours. This provides relief for the overall network and a more comfortable commute for passengers.

More transport options: The extensive network of interchange stations, with nearly half of its stations connecting to other lines, will give commuters greater flexibility and alternative routes to reach their destinations.

Network and urban development benefits

Improved rail resilience: The CRL's extensive interchange network will create redundancy in the system. This is critical for network resilience, as it provides commuters with alternative routes in the event of service disruptions on other lines.

Facilitates a "car-lite" vision: By providing an efficient, reliable, and attractive public transport option, the CRL encourages a shift away from private car usage. This helps to alleviate road congestion and contributes to a more sustainable, greener urban environment.

Supports regional economic hubs: The line is key to supporting new employment and economic centers outside the Central Business District (CBD), such as the Jurong Lake District, Punggol Digital District, and Changi region. It ensures these "far-flung" districts are well-connected, boosting their potential.

Unlocks land potential: The CRL's improved connectivity is expected to increase property values and make residential areas along the line more appealing. This also opens up new opportunities for commercial and residential developments in previously less accessible areas.

Environmental and engineering aspects

Carefully managed environmental impact: Despite initial concerns from nature groups about the CRL's path under the Central Catchment Nature Reserve (CCNR), extensive environmental impact assessments were conducted. A direct and deep tunnel alignment (70m below ground) was chosen to minimize ecological impact, and mitigation measures, such as noise reduction and wildlife awareness training for workers, were put in place.

Sustainable construction: The CRL project utilizes environmentally friendly construction methods and materials, such as low-carbon concrete and the use of electric machinery, to minimize its carbon footprint and reduce noise and emissions.

Long-term environmental benefits: In the long run, the direct tunnel alignment is considered more environmentally friendly due to lower energy consumption compared to a longer, skirting route.

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1. Two alignment options were studied:

Direct alignment: tunnel under the CCNR (goes ~2 km under the reserve), at about 70 m below ground for that stretch. The Straits Times+2The Business Times+2

Skirting alignment: route the line around the reserve (via roads such as Lornie, Upper Thomson, etc.), avoiding tunnelling under the sensitive area. Land Transport Guru+2The Straits Times+2

2. Findings from studies / EIA:

Both options are technically feasible with mitigation. Sgcarmart.com+2Land Transport Guru+2

Skirting alignment is longer (about 9 km versus ~4 km for the direct route for certain segments). Land Transport Guru+1

Skirting adds travel time (~6 more minutes) and extra cost. The Straits Times+2The Straits Times+2

There are also additional environmental and social impacts (land / home acquisitions if skirting through or near built‑up areas) and more potential disturbance to residents. The Straits Times+2Land Transport Guru+2

3. Decision made: In December 2019, the Government decided on the direct alignment under the CCNR, with tunnelling about 70 m deep under the reserve. Sgcarmart.com+3The Straits Times+3The Business Times+3

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Skirting Alignment benefits for residents

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Skirting Alignment benefits for residents

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Less environmental disturbance above ground near the nature reserve
By avoiding tunnelling beneath sensitive ecosystems, there's possibly less risk of disturbing endangered flora and fauna in the reserve itself. The Straits Times+1

Above‑ground aesthetics and visual impact may be better preserved near the reserve
Less “visible” infrastructure intrusion in nature‑areas; fewer large construction worksites or ventilation facilities in natural settings. People who care about views or living near green spaces may prefer less visible disruption. The Straits Times+1

Potential for stations that serve more densely populated or residential areas
The skirting alignment runs closer to some residences (e.g. near Upper Thomson Road, Windsor Park, Yew Lian Park) than the direct tunnel under mainly forested land. So access might be more immediately useful to those residents. The Straits Times+2The Straits Times+2

Possibility of less risk from deep‑tunnelling under long unpopulated stretches
Some residents express concerns over long stretches with no stations or areas, in direct alignment, that may be less useful. The skirting route may allow more surface or shallower tunnelling in places that are nearer homes, which might make maintenance, emergency access, or safety perception better for some.

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Here are several reasons why Singapore is building the Cross Island Line (CRL), and what benefits it is expected to bring. If you want, I can also list drawbacks or challenges.

Key Reasons / Benefits of the Cross Island Line

1. Improved Connectivity Across the Island

The CRL connects the eastern, western, and north-eastern corridors of Singapore, linking key hubs like Jurong Lake District, Punggol Digital District, and the Changi region. (Land Transport Authority)

It provides more interchanges with existing lines (e.g. Downtown Line, East‑West Line, North‑South, Thomson‑East Coast etc.), giving commuters more route options. (Ministry of Transport Singapore)

2. Reduced Travel Time

Direct connections mean many journeys will become significantly faster. For example, people from the West Coast commuting to Ang Mo Kio Industrial Park could cut their commute from over an hour (by train + bus) to ~30 minutes with CRL2. (Land Transport Authority)

Another example: Sin Ming to Pasir Ris East will take about 30 minutes via CRL, vs ~80 minutes today. (CNA)

3. More Accessible Public Transport for More Homes

Phase 1 alone will benefit 100,000+ households, especially in residential/industrial areas such as Loyang, Tampines, Pasir Ris, Defu, Hougang, Serangoon North and Ang Mo Kio. (Land Transport Authority)

CRL2 will also improve access in western areas like Sunset Way and West Coast, which currently aren’t well served by MRT. (Singapore Land Authority)

4. Network Resilience / Alternative Routing

Because the CRL is an “orbital” line (after the Circle Line), it connects to many radial lines and offers alternative routes. When disruptions happen (maintenance or unexpected), passengers have more options. (Land Transport Authority)

Some stations will be interchanges, so passengers can transfer across different lines instead of detouring into central areas. (Singapore Land Authority)

5. Support for Housing, Industrial & Recreational Growth

The CRL supports planned / future developments: new Build‑To‑Order (BTO) estates (e.g., Sengkang, Punggol, Hougang), industrial areas, business districts etc. (The Straits Times)

Recreational places like Changi Beach Park and Bishan‑Ang Mo Kio Park will become more accessible by MRT. (Land Transport Authority)

6. Efficient / Cost‑Effective Routing (“Direct Alignment”)

Singapore opted for a direct alignment under the Central Catchment Nature Reserve rather than skirting it. The direct route cuts travel time (about 6 minutes for some commuters), lowers public transport fares on average (~15%), saves on construction costs (approx SGD $2 billion), and reduces energy consumption. (The Straits Times)

7. Environmental / Sustainable Considerations

Though there are concerns about environmental impact (especially with tunnelling under nature reserves), various mitigation measures have been planned: deep tunnelling, reduced work‑site sizes, wildlife crossings, environmental monitoring, etc. (Land Transport Authority)

Over time, more direct routes and efficient operations means less energy use. The direct alignment under the reserve uses less energy than the longer, alternative routes. (The Straits Times)

8. Long Term Capacity & Planning

When fully completed, CRL will be Singapore’s longest fully underground MRT line (over 50 km). (Land Transport Authority)

Designed to serve high commuter demand: initial daily ridership of ~600,000, rising to ~1 million in later years. (Land Transport Authority)

Future proofing: trains will start with 6‑car sets, and infrastructure is being built to allow for 8‑car/train expansions. (Malay Mail)

9. Social & Quality of Life Benefits

More people will have MRT stations within walking distance of their homes. In Phase 1, LTA projects that 8 in 10 households will be within a 10‑minute walk of a train station. (CNA)

More options for recreation, less reliance on cars/buses for cross‑island and cross‑estate travel. Less congestion, likely better air quality over time.

If you like, I can also outline some of the concerns or trade‑offs (environmental, cost, construction complexity) so you get a balanced view?

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Overview

The direct alignment for the Cross Island Line (CRL)has disadvantages such as potential environmental impacts on the Central Catchment Nature Reserve (CCNR) due to the tunnel-boring process, challenges with deep tunneling to significant depths (up to 70m) to avoid surface impacts, and the need to avoid or minimize work sites within sensitive areas like the reserve's forest patch. These disadvantages led to ongoing public and nature group concern about the ecological impact, despite the direct route being shorter and more cost-effective compared to a skirting alignment.

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This alignment protects its wildfire and ecosystem from habitat disturbance.

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Reduced risk to sensitive ecosystems & wildlifeBy avoiding running under or through core parts of the nature reserve, you reduce disturbance to flora and fauna, forest specialists, and habitats that are ecologically fragile. The direct option, even with mitigation, still involves ventilation shafts, work sites, soil investigation etc., outside or near the reserve that could impact endangered species. The Straits Times+2The Straits Times+2Skirting might avoid the potential for irreversible habitat loss or fragmentation in the reserve. Mothership+1Precautionary principleGiven uncertainties around tunnelling impacts (groundwater, soil/subsurface disturbance, vibration, long‑term ecosystem effects), choosing a route that avoids the most sensitive areas is a safer / more cautious way from an environmental planning perspective. If unexpected issues arise (subsidence, changes in hydrology etc.), the skirting route may have fewer “high stake” risks. Land Transport Guru+1Potential for additional stations / serving more peopleThe skirting alignment might pass through areas that could benefit from an extra station or better access for communities along its longer route. This could improve connectivity for people who would otherwise be bypassed by the direct alignment. The Straits Times+1By serving more areas, it might spur local development or relieve congestion in suburbs that are less well‑served now. Today Online+1Lower disturbance to residents in certain locationsSome proposed work sites or ventilation shafts for the direct alignment might be near residential areas or sensitive locales. The skirting route, though longer, might allow placement of worksites in less sensitive or less densely populated areas. The Straits Times+1Avoiding tunnelling directly under the reserve might reduce out‑of‑sight but still real risks of surface disturbance, leaks, or geological impacts. Some residents are worried about ground‑borne vibration, poorer air quality, noise etc., in the skirting scenario but perhaps less risk of issues specific to reserve core ecology. Sgcarmart.com+1Preserving public trust / environmental heritageFor many, the nature reserve is part of Singapore’s “green identity.” Even if depth tunnelling and mitigation are used, skipping or skirting the reserve may demonstrate stronger commitment to conservation and avoiding encroachment.It may also avoid setting precedents of major infrastructure under fragile natural areas, influencing future projects.

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We suggest direct aligment because if we do skirting or direct aligment the animals in the rainforest will feel some vibration either way.

For those who live near the rainforest(humans), they will feel the vibration is we do skirting algiment in their homes and will not like it if they do skirting aligment. It will also affect the residence living nearby because of the dust, noise, vibration, etc.

It saves a lot of money for the LTA(Land Transport Authouity) and it does not disturb those living nearby unlike skirtibg aligment.

Hence we support direct aligment as it also saves time. As the saying goes, time is money!

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Optimizing Land Use and Accessibility:

Efficient Routing for High-Density Areas:
Aligning the Cross Island Line (CRL) through densely populated areas maximizes its accessibility for residents and commuters. A well-aligned track provides better connectivity between key residential, commercial, and industrial hubs, improving the overall efficiency of the MRT network.

Supporting Urban Growth:
Skirting along high-density areas allows for better future-proofing, especially as Singapore’s population continues to grow. The line is strategically designed to serve future developments, minimizing the need for costly expansions or realignments.

2. Reducing Congestion and Enhancing Connectivity:

Easing East-West Travel:
By optimizing alignment to create a smooth cross-island route, the CRL will help ease congestion along existing lines (like the East-West Line). The CRL can act as an alternate route to disperse passengers more efficiently across the island, addressing overcrowding on older lines.

Better Interchanges with Other MRT Lines:
Skirting alignment with the intention of facilitating better interchanges (e.g., with the North-South Line, Downtown Line, Circle Line) helps create a seamless transfer between lines. This reduces travel times and improves overall system efficiency, making the CRL a vital part of Singapore’s transportation network.

3. Environmental Considerations:

Minimizing Environmental Impact:
Careful alignment of the CRL, particularly in sensitive areas, can mitigate the environmental impact. For example, avoiding high-density forested areas or reducing disruption to habitats can be part of the track alignment strategy. Proper skirting also involves reducing tunneling and construction near environmentally sensitive zones.

Tunnel and Overground Balance:
The CRL’s alignment includes both underground and above-ground sections. Thoughtful skirting helps balance the need to tunnel through urban centers while also allowing for above-ground tracks where appropriate, which could reduce overall costs and minimize disruption to communities.

4. Cost Efficiency and Practicality:

Minimizing Construction Costs:
A well-aligned route can reduce the amount of tunneling required, which lowers the overall construction costs. Tunneling is expensive and technically complex, especially in dense urban areas, so aligning the track to minimize tunneling will result in a more cost-efficient project.

Long-Term Operational Savings:
Proper alignment contributes to smoother, more efficient operation, reducing maintenance and energy costs in the long run. If the track alignment avoids sharp curves and inclines, it can reduce wear and tear on the trains, decreasing operational costs.

5. Safety and Reliability:

Enhancing Track Stability:
Skirting alignment involves careful planning to ensure that tracks are laid on stable ground. For safety and reliability, tracks must avoid unstable soil, flood-prone areas, or regions where natural disasters (e.g., landslides) are more likely. This ensures a more stable infrastructure, contributing to the overall safety of passengers.

Emergency and Rescue Access:
Aligning the track in a way that ensures quick access for emergency services, maintenance crews, or rescue operations during incidents is crucial for the system's reliability and safety. Ensuring that the alignment accommodates for easy access routes can be an important factor in planning.

6. Minimizing Disruption to Existing Infrastructure:

Avoiding Major Infrastructure Conflicts:
The alignment of the CRL must minimize disruption to existing infrastructure such as residential areas, roads, and utilities. Thoughtful track alignment ensures that there are fewer conflicts with existing buildings and facilities, which reduces the need for costly or complex relocation efforts.

Preserving Community Spaces:
By aligning the CRL in a way that avoids encroaching too much on existing communities or recreational areas, the project can reduce social and political pushback. Keeping the construction out of heavily populated or sensitive community spaces helps maintain public support.

7. Increased Economic Opportunities:

Boosting Economic Growth in Underdeveloped Areas:
If the CRL is aligned to pass through areas that have previously been underdeveloped, it can act as a catalyst for economic growth in those regions. The accessibility brought by the MRT system can stimulate local businesses, improve property values, and create job opportunities in previously underserved areas.

Attracting Investments:
With better connectivity, areas that were once less accessible could attract investments in infrastructure, tourism, and housing developments, further driving Singapore’s economy.

8. Public Support and Satisfaction:

Addressing Public Transit Needs:
Skirting alignment in the most effective manner ensures the CRL meets public transit needs. It must take into account demand from high-traffic areas while being convenient for commuters. Aligning the route in a way that aligns with commuter expectations—such as connecting major hubs—helps ensure public satisfaction with the service.

Stakeholder Engagement:
The alignment process can involve extensive consultations with stakeholders (e.g., residents, environmental groups, businesses). Proper alignment helps to incorporate feedback and concerns from affected communities, fostering a sense of inclusivity and transparency in the planning process.

9. Future Expansion:

Building for the Future:
Skirting alignment with flexibility for future expansions or upgrades is crucial. As Singapore's transportation needs evolve, it’s important that the CRL’s design allows for easy extensions or upgrades to accommodate additional demand or new technology.

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1.it offers benefits like shorter travel times, lower fares, and reduced construction costs, while maintaining an environmentally friendly route through deep tunneling.

2.it does not disturb the animal habitats

3.it does not disturb the animal

4.it does not destroy/disturb the flora and fauna

5.it will make transportation more convienient for the residents.

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What’s good about Direct Alignment (DTC Clear Aligners) in Singapore

1. Lower cost

Generally, direct‑to‑consumer aligners are cheaper than full in‑clinic treatments with traditional braces or premium clear‑aligner brands. iDental

Fewer in‑office visits and less chair‑time help reduce overheads, which lowers final cost to user. iDental+2teehee.sg+2

2. Convenience and flexibility

Many DTC aligner services allow remote monitoring (“tele‑dentistry”), which means fewer physical visits. This is handy for busy people. iDental+1

Some kits can be started with home‑scans or impression kits mailed to you, avoiding clinic appointments (or minimizing them). iDental

3. Discreet / aesthetic appeal

Like all clear aligners, DTC ones are more discreet than metal braces. Many people like that you can straighten teeth without obvious braces.

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✅ 1. Shorter Travel Time

Up to 6 minutes faster travel time compared to the skirting alignment.

This improves efficiency and makes the CRL a more attractive option for commuters.

Encourages greater public transport use, reducing reliance on private vehicles.

✅ 2. Cost Efficiency

Cheaper to build than the longer skirting alignment.

The direct route is about 4 km shorter, reducing:

Construction materials

Labour and tunnel boring costs

Long-term operational and maintenance costs

✅ 3. Reduced Environmental Impact (Surprisingly)

Although it passes under the CCNR, the tunneling is deep underground (about 70m).

No surface works within the nature reserve.

LTA conducted a full Environmental Impact Assessment (EIA) and committed to:

Careful monitoring

Use of tunnel boring machines (minimizes vibration and disruption)

No clearing of forested areas

✅ 4. Faster Construction Timeline

A shorter route means construction can be completed sooner, allowing the line to open earlier and benefit the public faster.

✅ 5. Better Connectivity and Network Efficiency

Direct route allows for better integration with the MRT network, especially for stations like Bright Hill and Sin Ming.

Improves east-west connectivity across the island, benefiting residents in areas like Ang Mo Kio, Serangoon, Hougang, and beyond.

✅ 6. Stronger Urban Development Potential

Stations along the direct alignment are in more strategic urban areas with higher development potential.

Promotes transit-oriented development (TOD) in growing residential and commercial zones.

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What can go wrong if skirting is misaligned

1. Aesthetic issues

Visible gaps between wall & skirting board make things look sloppy or unfinished.

Uneven joins or corners look visually obvious and reduce the perceived quality of finish.

Mismatched height or misaligned edges draw the eye; in a high-spec interior, even small imperfections stand out.

2. Functional and durability problems

Gaps allow moisture, dust or pests to accumulate — especially in wet areas (kitchens, bathrooms) or underfloor dampness. This can damage the wall or skirting material. In Singapore’s humid climate, getting moisture related problems is more likely. renovation4home.com+29reno.com+2

Poor adhesion: If the back of the skirting doesn’t sit flush due to wall unevenness or poor installation, adhesive or nails might not hold well. Over time the skirting may “pop off” or become hollow. createking.com+1

Expansion and contraction: Wood/MDF/PVC expands with humidity/temperature. If misaligned without space for movement, this can cause warping, cracking or buckling. renovation4home.com+2Octopus Doors & Skirting+2

3. Cleaning and maintenance difficulty

Dust/dirt collects in uneven gaps; it’s harder to clean around misaligned skirting (e.g. gaps vs a flush edge).

Paint or caulking needed to fill gaps degrades over time; maintenance is more frequent.

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Destroying flora and fauna threatens our survival because we depend on healthy ecosystems for clean air, water, food, and climate stability

. The interconnected relationships between species are complex, and their loss can trigger a cascade of negative effects that harm both the environment and human society.

Consequences of destroying flora and fauna

Destabilizes ecosystems: Every species plays a unique role, and the loss of one can have a ripple effect that disrupts the entire food web. For example, the disappearance of a key pollinator could devastate the crops that rely on it for reproduction.

Worsens climate change: Plants and forests act as "carbon sinks" by absorbing large amounts of carbon dioxide. Destroying them releases this stored carbon back into the atmosphere, which accelerates global warming and can lead to more frequent and intense heatwaves and floods.

Increases risk of disease: Degrading or destroying natural habitats increases contact between humans, livestock, and wildlife. This creates opportunities for zoonotic diseases—infections that jump from animals to humans—to emerge and spread, which can lead to pandemics.

Threatens food security: Many of the world's crops depend on pollinators like bees, and healthy soil relies on a variety of microbes and organisms. The loss of these species can cause agricultural productivity to plummet and lead to food shortages.

Reduces medicinal resources: A significant portion of modern medicine is derived from natural sources, including plants and animals. When species go extinct, we lose the potential to discover new medicines and treatments for diseases.

Causes economic loss: Industries that rely directly on biological resources, such as agriculture, fisheries, forestry, and tourism, suffer substantial economic losses when ecosystems are damaged or destroyed. It's estimated that more than half of the world's GDP is moderately to highly dependent on nature.

Ethical and aesthetic reasons

Beyond the practical benefits, many believe that all species have an intrinsic right to exist, and that humans have a moral obligation to protect the planet. The natural world also offers immense cultural, spiritual, and aesthetic value, from scenic landscapes that provide recreational opportunities to species that hold significance in different cultures.

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I think direct alignment is better.

Direct alinment is faster than skirting alinment.

Direct alinment is build uder the ground by seventy (m) down.

Skirting alinment needs more money than direct alinment.

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Improves connectivity across the island, making travel faster and easier for commuters.

Reduces traffic congestion by encouraging more people to use public transport instead of cars.

Supports sustainable urban growth by linking new residential and commercial areas.

Boosts economic development through better access to jobs and businesses.

Enhances resilience of the MRT network by providing alternative routes during disruptions.

Encourages greener living by lowering carbon emissions from fewer car trips.

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It will not affect the flora and fauna in the nature reserve and will not cause distruption to the animals there. Although it may cause more, we get to protects animals and nature instead of always putting humans first especially ones that are endangered.

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Poor skirting alignment in Singapore homes, particularly in new Build-To-Order (BTO) flats, is a common issue that is problematic for several reasons

. The main problems are aesthetic imperfections, gaps that can harbor pests and dirt, and potential damage to walls and flooring.

Aesthetic flaws

Unsightly appearance: Uneven, slanted, or mismatched skirting detracts from the overall finish and polish of a room, creating a perception of poor quality workmanship.

Visible imperfections: Misalignment can expose gaps between the flooring and the wall, which are meant to be concealed by the skirting.

Hygiene and pests

Pest infestation: Gaps between the skirting and the floor or wall can provide entry points for insects and other pests.

Dirt accumulation: These same gaps can trap dust, dirt, and moisture, making the area difficult to clean and potentially leading to mold or mildew.

Functional and structural issues

Thermal expansion: Skirting is designed to hide the expansion gap left for flooring like vinyl to expand and contract with temperature changes. Misalignment can compromise this function, potentially causing flooring to warp or bulge over time.

Compromised protection: Skirting protects the base of the wall from scuffs and damage from vacuums, mops, and furniture. Misaligned skirting offers less effective protection, leaving the wall vulnerable.

Water damage: Gaps caused by misalignment can allow water from mopping or leaks to seep behind the skirting and damage the wall or flooring underneath.

Recourse for new flat owners

For new BTO flat owners, skirting issues are typically considered defects that can be rectified during the one-year Defects Liability Period (DLP). If you discover misaligned skirting or other defects, you should:

1. Document the issue: Take clear photos and notes of the misaligned areas.

2. Report to the Building Service Centre (BSC): Submit your list of defects to the BSC within the DLP.

3. Request a joint inspection: Arrange a joint inspection with the contractor to confirm the flaws and have them rectified.

Want me to search for the steps to report defects and get them fixed during the Defects Liability Period?

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Protects fragile ecosystems by avoiding direct disturbance to endangered plants and animals.

Reduces environmental risks like groundwater disruption and habitat loss under the reserve.

Follows the precautionary principle to minimize unknown long-term damage to nature.

Allows new stations to serve more communities along the longer route.

Avoids noise and construction impacts near sensitive residential areas close to the reserve.

Preserves Singapore’s green heritage by respecting the integrity of the nature reserve.

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Arguments about disagreeing with skirting alignment

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Arguments about disagreeing with skirting alignment

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If do skirting it will take longer because the line will be 9km longer than direct.

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Overview

Singapore opted for a direct alignment for the Cross Island Line (CRL) under the Central Catchment Nature Reserve due to its advantages of lower construction costs (an estimated $2 billion saving), reduced fares for commuters, and shorter travel times. This alignment involves tunneling deep underground (70 meters) to pass through hard granite and minimize disruption to the surface, avoiding surface works within the nature reserve and thus preserving its flora and fauna.

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Reduced risk to sensitive ecosystems & wildlife

By avoiding running under or through core parts of the nature reserve, you reduce disturbance to flora and fauna, forest specialists, and habitats that are ecologically fragile. The direct option, even with mitigation, still involves ventilation shafts, work sites, soil investigation etc., outside or near the reserve that could impact endangered species. The Straits Times+2The Straits Times+2

Skirting might avoid the potential for irreversible habitat loss or fragmentation in the reserve. Mothership+1

Precautionary principle

Given uncertainties around tunnelling impacts (groundwater, soil/subsurface disturbance, vibration, long‑term ecosystem effects), choosing a route that avoids the most sensitive areas is a safer / more cautious way from an environmental planning perspective. If unexpected issues arise (subsidence, changes in hydrology etc.), the skirting route may have fewer “high stake” risks. Land Transport Guru+1

Potential for additional stations / serving more people

The skirting alignment might pass through areas that could benefit from an extra station or better access for communities along its longer route. This could improve connectivity for people who would otherwise be bypassed by the direct alignment. The Straits Times+1

By serving more areas, it might spur local development or relieve congestion in suburbs that are less well‑served now. Today Online+1

Lower disturbance to residents in certain locations

Some proposed work sites or ventilation shafts for the direct alignment might be near residential areas or sensitive locales. The skirting route, though longer, might allow placement of worksites in less sensitive or less densely populated areas. The Straits Times+1

Avoiding tunnelling directly under the reserve might reduce out‑of‑sight but still real risks of surface disturbance, leaks, or geological impacts. Some residents are worried about ground‑borne vibration, poorer air quality, noise etc., in the skirting scenario but perhaps less risk of issues specific to reserve core ecology. Sgcarmart.com+1

Preserving public trust / environmental heritage

For many, the nature reserve is part of Singapore’s “green identity.” Even if depth tunnelling and mitigation are used, skipping or skirting the reserve may demonstrate stronger commitment to conservation and avoiding encroachment.

It may also avoid setting precedents of major infrastructure under fragile natural areas, influencing future projects.

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It is better to do direct allignment because it will save more money and its better kill animals than killing more humans because if the engineers build the mrt line longer there will be a higher risk of dying.

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1. It does not disturb the flora and fauna.

2. It will not destroy the animals habitat.

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It will be more convinent to travel and It will attract us to try new lines and we will be more civilised

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It will save animals and the trees so we have more nature reserves for animals and the animals will not go endangered.

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Improved Connectivity Across the Island

The CRL will run from the west (Jurong) to the east (Changi), cutting across the island.

It links major residential, industrial, and commercial hubs directly, reducing the need for multiple train transfers.

It connects key interchanges with existing MRT lines (e.g., North-South, East-West, Downtown, Thomson-East Coast), improving the overall network.

⏱️ 2. Shorter Travel Times

Commute times will be significantly reduced for cross-island travel. For example:

Bright Hill to Jurong could be cut by 30–40 minutes.

This boosts efficiency for daily commuters, especially those working far from home.

🌱 3. Environmental Sustainability

A better-connected MRT system encourages public transport use over private cars, reducing traffic congestion and carbon emissions.

It contributes to Singapore’s Green Plan 2030 and long-term sustainability goals.

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The skirting alignment, though longer and more expensive, would avoid entering the nature reserve entirely. Benefits included:

No disturbance to protected wildlife habitats,

Preserving the integrity of Singapore’s natural heritage,

Aligning with the Singapore Green Plan 2030 and “City in Nature” vision,

A positive model of sustainable infrastructure planning.

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The skirting alignment for the Cross Island Line (CRL) offers flexibility for future network planning and avoids the environmental impact of tunnelling under the Central Catchment Nature Reserve, but it was not chosen because it would have resulted in a significantly longer and more expensive route, increased commuter fares by 15%, and higher energy consumption compared to the direct alignment option. The direct alignment was ultimately chosen due to its shorter, more direct route, lower construction costs, and potential for lower energy consumption in the long run, making it a more beneficial option for Singaporeans despite the environmental concerns, which were addressed by tunnelling deep under the nature reserve.

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There will finally be a line from Jurong to Changi. More people can choose which line they can take as it might be overcrowded. There will be stops for people who live near the nature reserve. It will be more convenient.

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skirting offers advantages like

durability, resistance to moisture, pests, and fire,easy cleaning,lightweight and quick installation, andsustainabilitydue to its recyclability.

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🔗 1. Improved Connectivity Across the Island

East-West Link: It provides a much-needed east-west connection that complements the existing north-south MRT routes.

More Direct Routes: Residents can cut down travel time by avoiding detours through the city center.

Major Interchanges: CRL connects with almost all existing MRT lines, improving network efficiency

🕒 2. Reduced Travel Time

Journeys between Jurong and Changi, or Ang Mo Kio and Pasir Ris, will be significantly shortened—by up to 30–40 minutes for some trips.

This leads to higher productivity and better quality of life.

🏘️ 3. Better Access to Underserved Areas

CRL will serve new and existing towns like Serangoon North, Hougang, and Loyang that currently lack direct MRT access.

Improves public transport equity, especially for heartland communities.

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I suggest to do direct aligment

, because if we do skirting aligment or direct aligment the rainforest ,the animals will feel the vibration and run away from the rainforest as they might feel scaredand worried.

For those who live near the rainforest(human), the will feel the vibration in their home and will not like it if they do skirting aligment. It also wont affect the residence living nearby because of the dust, noise, viabreation, etc.

It saves a lot of money for the LTA(Land Transport Athourity)and it does not disturb those living nearby unlike skirting aligment.

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It will save millions of dollars and it will be faster to travel.You can also take all the animals and trees to bring it to somewhere and after the contrusction is done, we can put the animals and trees back where they belong.The other way is that we can put sound barriers so the noise will not disturb the animals around them.

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The advantages of the

direct alignmentfor Singapore'sCross Island Line (CRL)includelower construction costs (saving ~$2 billion), lower public transport fares (~15% less) due to the shorter, more direct route, reduced travel time (saving ~6 minutes per trip), and lower energy consumption, making it a more environmentally friendly option in the long term, according to theLand Transport Authority (LTA)andThe Straits Times. This alignment involves tunnelling 70 meters deep under theCentral Catchment Nature Reserve(CCNR), bypassing surface works to minimize disturbance to the reserve's flora and fauna.

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Nature groups supported this option, fearing the potential loss of forest cover and unique habitats for native species from surface construction work. The main benefit is that it routes the MRT line around the sensitive nature reserve, preventing direct damage to the flora and fauna within the Central Catchment Nature Reserve (CCNR).

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Why We Should Protect Flora and Fauna in Singapore When Choosing Between MRT Direct and Skirting Alignments

1. Singapore Has Limited Natural Spaces
As a small, highly urbanized country, Singapore has very limited green areas like the Central Catchment Nature Reserve, Bukit Timah Nature Reserve, and other biodiversity-rich parks. MRT alignments that cut directly through these areas can irreversibly damage sensitive ecosystems. A skirting alignment helps avoid this.

2. Flora and Fauna Are Vital to Ecosystem Services
Native plants and animals contribute to clean air, water filtration, and climate regulation—services that benefit all Singaporeans. Disrupting these habitats through direct alignments can degrade these natural services, leading to long-term environmental and public health costs.

3. Home to Endangered and Unique Species
Singapore’s green spaces host rare and endangered species like the Sunda pangolin, Raffles’ banded langur, and various native orchids. Construction from direct alignments could fragment or destroy their habitats, increasing the risk of extinction. Skirting routes help preserve these fragile populations.

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It will be cheaper by 2 billion dollars and will save 6 minutes. It will also save construction time and will disturb the animals lesser. It will not make more forrest fragments as it will be underground. The constuction is already in direct so it would not be smart to destroy the line and make a new way. We can transfer all the animals to the zoo to be safe from contruction.

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1. High Land Acquisition and Construction Costs
Singapore is a highly urbanized city with limited land. A direct alignment would often require tunneling under or building through heavily developed areas, which involves expensive land acquisition, legal challenges, and compensation. The cost of displacing buildings or rerouting infrastructure is massive.

2. Major Disruption to Communities and Businesses
Direct alignments can lead to long-term construction disruptions, affecting homes, schools, roads, and businesses. In a compact city like Singapore, even small disruptions can have widespread ripple effects on daily life and economic activities.

3. Environmental and Heritage Impact
A direct path might cut through nature reserves, parks, or heritage sites. Singapore places high value on conserving green spaces and historical landmarks. A skirting alignment avoids these sensitive zones, whereas a direct one might threaten them.

4. Traffic and Safety Challenges
Construction of a direct MRT line through busy urban cores can worsen traffic congestion and pose safety risks to pedestrians and vehicles during the multi-year construction phase.

5. Less Flexibility for Future Expansion
Direct alignments are typically fixed and rigid. If urban development patterns shift over time (e.g. toward suburban areas), the line may not serve future needs effectively. Skirting alignments, on the other hand, offer more flexibility for extensions and connections to future developments.

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Because we are killing lives and we should let them live and we should not destroy nature

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We can save the trees and the animals,because if we cut diwn the trees the country will feel more hot and the trees can help use photosintize the air so that we can have more oxygen to breath.

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I choose Singapore MRT skirting alignment because it represents a highly efficient and sustainable approach to urban transit design. The alignment strategy of the MRT — which typically involves running the tracks along the edges of major urban developments and population zones — serves several key purposes.

Firstly, it minimizes land acquisition and disruption. By skirting around high-density or sensitive areas instead of cutting through them, the alignment reduces the impact on existing infrastructure, communities, and green spaces. This approach reflects Singapore’s strong commitment to sustainable and considerate urban planning.

Secondly, the skirting alignment promotes accessibility while managing congestion. It effectively connects peripheral and suburban areas to the city center, helping to decentralize economic activity and reduce overcrowding in the core. This ensures more balanced urban growth.

Thirdly, the design supports cost-efficiency and long-term scalability. Skirting alignments are typically less complex in terms of tunneling and property compensation, which means lower construction and operational costs. They also allow easier expansion as the city grows outward.

In summary, the Singapore MRT skirting alignment is a strategic choice because it balances efficiency, sustainability, and social impact — all of which are critical for a modern, high-performing public transport system.

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It wont disturb the animals in the nature reserve.

We can avoid collisions with the nature reserve.

There will be more stops for the residents to drop off

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I support this as the animals will be safe and its wont fragment the already fragmented nature reserve

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It will be faster to do direct as it will cost 2 billion dollars extra.

And it will be faster to complete and once it is finished it will be faster by 6 minutes.

So direct alignment will be more efficient.

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1. This option conserves the native flora and fauna found in Central Catchment Nature Reserve. They include mammals like the Malayan colugo, Raffles' banded langur, and Sunda pangolin; birds such as the Oriental pied hornbill, straw-headed bulbul, and greater racket-tailed drongo; reptiles like the clouded monitor lizard; and even the less common but present crab-eating macaque and wild boar.

2. This option will not destroy the already fragmented Central Catchment Nature Reserve.

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Central Catchment Nature Reserve - Wikipedia

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- With more MRT stations, commuters have a higher chance of having an MRT stations nearer to their home.

- This means more alternative travel routes to get to your destination.

- It may reduce overcrowding of commuters to give them a more comfortable travel experience.

- It will serve existing and future developments in the eastern, western, and north-eastern corridors, connecting major hubs such as Jurong Lake District, Punggol Digital District and Changi region.

- More than 100,000 households will benefit from CRL, and common recreational spaces such as Changi Beach Park and Bishan-Ang Mo Kio Park will also become accessible by public transport.