Mannings (Asia) Consultants Ltd
Services
Infrastructure

We have extensive knowledge in designing a wide range of infrastructures including highways, bridges, pavements, drainage, etc in Hong Kong and worldwide from feasibility study, investigation, detailed design to construction supervision. Our team has already developed long term partnership relationship with relevant departments in Hong Kong such as Highways Department, Drainage Services Department, Transport Department, etc. Our skill and knowledge will be beneficial for all kinds of infrastructure development. Recently, we have been appointed by Highways Department for Agreement No WD 8/2007 Upgrading of Remaining Sections of Kam Tin Road and Kam Kam Road, Drainage Impact Assessment and Traffic Impact Assessment Study; Agreement No WD 5/2007 Tseung Kwan O Further Development Infrastructure Works for TKO Stage I Landfill Site – Study on Impact to Environment, Drainage System and Stability of Existing Seawall, etc. Currently we are also the designer for Footbridge Link Connecting Manhattan Hill, Mei Foo, Mei Foo Bus Terminus and Mei Foo Station responsible for the structural, geotechnical and drainage design for the footbridge link with the overall length of 360m, comprising 8 individual structural steel trusses with spans varying from 30m to 50m.

Internationally, we are being involved in the project management for the 156km long Shire-Shiraro-Humera-Lugdi Road Upgrading Project in Ethiopia. In Cambodia, we have been accountable for construction review of the Monivong Bridge, a balanced cantilever bridge of the longest span of 117.5m across River Bassac at Phnom Penh, the capital. In China, we were responsible for the technical review of Yellow Sea Bridge of 50km long nearby Shanghai. The bridge deck is 16.2m above sea level with the width of 11.5m. Foundations are driven pile and bored concrete piles. In Beilun Port Expressway between Beilun Port and Ningbo, we were responsible for the annual pavement maintenance review.

Retrofitting of Noise Barriers on Tuen Mun Road (Town Centre and Fu Tei Sections)

Design and Construction comprising 2 packages; Package 1 - Retrofitting of Noise Barriers on Tuen Mun Road (Town Centre Section) and Package 2 - Retrofitting of Noise Barriers on Tuen Mun Road (Fu Tei Section). Package 1 covers about 700m long existing Tuen Mun Road section between Kam Hing Building and Lakeshore Building. Package 2 covers about 750m long existing Tuen Mun Road section between Brilliant Garden and Lam Tei Interchange. These two road sections are proposed to be retrofitted with noise barriers/enclosures. Package 1 will adopt NEC contract type and the construction works will commence in 2013.

Provision of Access Facilities for the Disabled at Existing Footbridges Phase 2 and Existing Subways Phase 1 (Package 1) – Design and Construction

Appointed by HyD in 2010, Mannings is the Engineer for the “Design and Construction” for the provision of access facilities for the disabled for 15 existing footbridges and subway locations all over Hong Kong. The Works was divided in 3 packages with two construction Contracts, both were awarded in 2011. Mannings derived cost effective ideas such as reduction of lift foundations in order to save cost and time. Greening features such as planters and creepers were implemented as far as possible to enhance the greening environment. In addition, solar panel was also specified as an energy saving feature for the lift in Aberdeen.

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Provision of Access Facilities for the Disabled at Existing Footbridges and Subways, Phase 3 (Remainder) - Investigation

We are appointed by Highways Department to undertake the above investigation assignment and the agreement was signed on 24 May 2011. This project is the investigation study of the provision of access facilities for the disabled at 59 nos. structures, including 27 nos. footbridges, 16 nos. subways and 16 nos. footpath at flyover location. The access facilities may be in form of the lift, ramp and stairlift. Due to the provision of the access facilities, we shall carry out the investigation study of 1) the modification/extension of part of the existing footbridges, subways and footpaths at flyovers; 2)upgrading of existing retaining walls/slopes; 3)modification/reconstruction of existing footpaths, carriageways and amenity area; 4) temporary traffic arrangement and traffic impact assessment of vehicular and pedestrian traffic; 5)associated E&M works, drainage works, utilities diversion works, waterworks, architectural and landscaping works; 6)Study on concerns of the disabled on using ramp with different gradients. After the investigation study, we shall work out the public consultation plan and participate the public consultation.

Improvement Works at Tai O – Design and Construction

We were appointed by CEDD to design and construction supervise the improvement works at Tai O including Riverwall at Yat Chung; 4 footbridges; improvement of existing roads, streetscape within Tai O inner-core area; advance works for the entrance plaza, promenade and garden for improved circulation and views in Shek Tsai Po; temple garden upgrading for Yeung Hau Temple and Kwan Tai Temple; improvement of heritage trails; 9 new jetties or jetties with improvement; salt pan demonstration area; etc. The design programme is under extremely tight schedule and we even manage to complete the Review Phase, public consultation and the detailed design including invitation of tender within 6 months after appointment. The public consultation undertaken by us is of excellent quality with high commendation from CEDD and the public.

 
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Design and Build of Improvements to Tuen Mun Road Town Centre Section

This is a $1.5 billion design and build contract and we are appointed by the Contractor as the Lead Designer for the detailed design of this high profile Tuen Mun Road widening project in which exceeding 1.5km expressway is to be widened from dual 2 to dual 3 carriageway. Our design works cover various types of noise barrier comprising series of noise enclosures, semi-enclosure, cantilever spanning over 20m wide carriageway with vertical green walls and green roofs; re-provisioning of 4 footbridges with lifts; relocation of a LRT lift; and a 400m viaduct; and design of complicated traffic diversion.

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Design and Build of Infrastructure Works for Tseung Kwan O Stage I Landfill Site (Phase I)

This is a design and build assignment for the recreational development between Junk Bay and Clearwater Bay Peninsular of Tseung Kwan O. The works mainly comprise a cycle track largely running along the eastern bank of the Eastern Channel, and a channel crossing bridge of 80m span together with a lift crossing the channel and linking the northern western side of the landfill site to the southeast of TKO Town Centre. The cycle track and the channel bridge will be used as a vehicular relief route during emergency. We, as the Lead Designer appointed by the Contractor, successfully assisted the Contractor in winning this challenging contract by adopting a number of cost effective innovative ideas that form added values to this Contract.

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Replacement of Corroded Bearings of Kai Fuk Road Flyover (Structure No. K58) Connecting Kai Fuk Road and Kwun Tong Road – Investigation

We are commissioned by Highways Department to undertake the above investigation assignment in replacement of the corroded bearings of Kai Fuk Road Flyover. 76 concealed metal bearings at 36 different locations of halving joints of the bridge are heavily corroded or medium/slightly rusted, and thus necessitating to be replaced. This project includes the structural investigation of bearing replacement options by examining the design calculations and as-built drawings, determination of the structural feasibility by carrying out design checking of the structural implication, comparison and recommendation of feasible option(s); and determination of the implementation methods, procedures and other details of the recommended scheme.

   

Improvement and Extension of Kam Pok Road

We were appointed by HyD to undertake the project to relieve the road safety concern from Fairview Park Boulevard. The Project is to improve the existing 145m long private two-lane section of Kam Pok Road east of Pok Wai South Road and to extend the road by a 455m long and 10.3m wide single two-lane carriageway to connect Kam Pok Road/Pok Wai South Road to Castle Peak Road (Tam Mi Section) with 1.6m wide footpaths on both sides and new road pavement construction, landscaping, drainage, earthwork, environmental mitigation works, waterworks and traffic aids. We have worked closely with HyD and our progress for most of the milestones are 3 months ahead of the original programme in order to fast track the overall programme to meet the tight schedule for the public to relieve road safety concern.

   

Improvement to Fan Kam Road – Feasibility Study

Employed by HyD to study 7.5km road between Po Kin Road and Kam Tin Road comprises a substandard 5.5m wide single 2-lane carriageway with discontinuous and narrow footpaths on both sides and trees with OVTs are all along the road. Options evaluation is well applauded by HyD and it has just been completed successfully to the satisfaction of Highways Department (HyD).

Retrofitting of Noise Barriers on Tai Po Tai Wo Road –
Investigation, Design and Construction

We are commissioned by Highways Department of Hong Kong SAR to undertake the Investigation, Design Tender and Construction Phases for all the civil, geotechnical, structural, electrical and mechanical, environmental mitigation, compensatory planting and landscape works of the construction of approximately 170 metres long cantilevered noise barriers alongside the southbound of Tai Wo Road and the junction between Tai Wo Road and Po Nga Road and the construction of two segments of cantilevered noise barriers alongside the slpe facing the westbound carriageway of Tai Wo Road in fornt of Hang Wo House. The services also include sun-glare investigation, risk assessment, heritage study, 3D noise model, etc.

Upgrading of Remaining Section of Kam Tin Road and Lam Kam Road Drainage Impact Assessment and Traffic Impact Assessment Study

We are appointed by Highways Department of Hong Kong SAR to be responsible for the Drainage Impact Assessment and Traffic Impact Assessment Studies for the 5.5km road improvement project. In the study we are responsible for the drainage impact assessment for the low lying Kam Tin area during construction and implementation in accordance with ETWB-WB TC(W) No 2/2006. Kam Tin Road is classified as a Rural Road with annual average daily traffic of 15,000 vehicles and peak hour flow is as high as 560 and 690 vehicles per hour for eastbound and westbound traffic respectively. We are accountable for the temporary traffic arrangement planning for the construction stage and the traffic impact assessment for the implementation stage in order to minimize the disruption to public.

Improvement Works in Sai Kung Town – Investigation

Appointed to investigate the improvement of traffic conditions and the street environment in Sai Kung Town. We have swiftly completed the traffic and environmental review and our recent presentation to the senior level of CEDD has won their appreciation. Planned public consultation has been carefully considered and will soon be presented to the Sai Kung District Council to seek their support for the traffic and pedestrian improvement works, modification/relocation of the public transport interchange facilities, provision of a public open space in front of Sai Kung Public Pier, provision of a lookout point and boardwalk and associated environmental mitigation measures.

Upgrading of Remaining Section of Kam Tin Road and
Lam Kam Road Environmental Impact Assessment Study

We are responsible for the Environmental Impact Assessment under Environmental Impact Assessment Ordinance (EIAO) for the 5.5 km road improvement project including noise, air quality, ecology, trees, archeology, water quality, land contamination, etc. The proposed road upgrading is a Designated Project under the EIAO due to encroachment into the “CA” zones adjacent to Kam Tin Road (OZP S/YL-PH/11) and Lam Kam Road (OZP S/YL-SK/9) that function as buffers to the Lam Tsuen Country Park and the Tai Mo Shan Country Park, respectively. The study requires an integrated multidisciplinary approach from an experienced environmental team (ET) in order to complete the necessary technical assessments to the quality required by EPD and other government Departments. The project team will assist in public consultation, EIA submission procedures under the EIAO and application of the Environmental Permit after the approval of the EIA study.

Retrofitting of Noise Barriers on San Tin Highway – Investigation

We are appointed by Highways Department to undertake the above investigation assignment of the noise barriers retrofitting works at San Tin Highway. This project covers the 3.4km long existing San Tin Highway section between Pok Wai Road and San Tam Road, which was proposed to be retrofitted with 3m and 5m high vertical noise barriers along the roadside verge. Through review of previous studies, preliminary works and the latest available information, sound and cost-effective preliminary design will be produced and implementation strategy will be formulated.

   

Retrofitting of Noise Barriers on Tseung Kwan O Road –
Alternative Design to Noise Barrier Foundation

We are responsible for the alternative design for all approximately 1km long noise barrier along the sensitive Tseung Kwan O Road, which connects between Kwun Tong and Tseung Kwan O. In the contract, there are four types of noise barriers with different configurations to be erected including 7m high cantilever noise barrier, 4m high vertical noise barrier, etc. Some barriers are even erected on existing structures such as bridges or retaining walls. Our design has to take into account of the constraints of the running traffic, space limitation due to site configuration, the existence of the permanent structures, etc. The design has proven to be cost-effective and can meet the above stringent requirements.

Tseung Kwan O Further Development Infrastructure Works for TKO Stage I Landfill Site – Study on Impact to Environment, Drainage System and Stability of Existing Seawall

We were appointed by Highways Department of the SAR of Hong Kong to conduct a landfill gas hazard assessment at temporary and permanent stages, to investigate and work out feasible, optimal and cost-effective landfill gas precautionary measures to be implemented during the construction and operational phases for approval of Environmental Protection Department and other concerned parties; to carry out drainage impact assessments and studies, to investigate and work out feasible, optimal and cost-effective recommendations for the approval of Drainage Services Department and other concerned parties; and to carry out seawall stability assessment at temporary and permanent stages and suggest accommodation measures to take up the traffic loading if required.

Footbridge Link Connecting Manhattan Hill, Mei Foo,
Mei Foo Bus Terminus and Mei Foo Station

We are the Designer responsible for the detailed structural, geotechnical and drainage design for the footbridge link connecting Manhanttan Hill, Mei Foo Bus Terminus and Mei Foo MTR Station. The overall length of the footbridge is about 360m, comprising 8 individual structural steel trusses with spans varying from 30 to 50m. Two of the trusses are of the Vierendeel type and the remaining six are of the Warren type. The trusses are supported on individual reinforced concrete piers, pile caps and mini-pile foundation. The design has to overcome constraints due to close proximity of the MTRC tunnels, a large diameter water main, underground utilities and traffic diversion. In addition, we have provided designs for the temporary works in the complicated urban area with congested utilities works in the safe, functional and cost-effective manner.

Castle Peak Road Improvement, West of Tsing Lung Tau

We were appointed to carry out a detailed review of the existing pavement condition and the future pavement design and had then successfully derived the most cost effective pavement and drainage design for the concerned section of Castle Peak Road. The existing pavement was observed to be in poor condition. Numerous rutting, cracking, soft-spots, differential settlement, etc were observed on the existing carriageway and the existing pavement has been damaged at numerous spots thoroughly which needs to be rectified. Our pavement proposal has taken into consideration of the pavement foundation, joints, gullies, manholes, sub-soil drainage, future maintenance, etc and eventually a cost effective pavement design was achieved.

Cedric Bridge Deck Repair

We are responsible for the design of the repairing of the deck of Cedric Bridge, which was built in 1976. The bridge is formed by three spans structure of 19m-25m-19m suspended on piers at the Tai Lam Nullah. Both end spans of the deck are box girder concrete structure while the mid span is formed by precast beams with in-situ deck. The deck has been deteriorated to a state that a completely new approach for the deck repair has to be carried out. We have reviewed the history of repairing, the condition of the deck and the most current concrete repair technology. We have then derived the most cost-effective solution in view of the latest technology and minimization of disruption to public. Our duties also include traffic impact assessment and now the works are carried out as scheduled.

Yellow Sea Bridge, Yanghou Port, China

We were responsible for the technical review of this major viaduct of approximately 10km in length located nearby Shanghai connecting to the newly developed port at Yangkou. 4km of the viaduct stands on deep water region while the other 6km rests on shallow water region. The structure is formed by precast prestressed beams supported by piers. In the shallow water region, the span of the precast structure is 30m whereas the span will increase to 40m in the deep water region. In the shallow water region, the viaduct is supported by precast piles whilst the in the deep water region the viaduct is founded on large diameter bored pile. Our review covered the detailed designs both at the construction and the implementation stages and also the contractual related issues.

Shire-Shiraro-Humera-Lugdi Road Upgrading Project, Ethiopia

The road falls in the north and north western part of Tigray region of Ethiopia. The total length of the road is about 313km and the road is divided into 2 sections, namely Shire-Sherar-Humera and Humera-Lugdi. The road is to be upgraded to a 2-lane bituminous road and the associated works include widening of existing culverts, protection works to the existing bridges and culverts, ditches and drains, road signs and marking, etc. We are responsible for the project management of this road. The project is a funded by World Bank.

Beilungang Port Expressway between Beilun Port and Ningbo

We were responsible for the pavement maintenance review for this 50km with the annual traffic of about 5 million vehicles. The Ningbo Beilungang Expressway is a dual-2 expressway with maximum posted speed of 100 km/h. The Expressway is divided into two sections. Section 1 starts from the Beilun and ends at the Da Zhu Jia. Section 2 starts from the Pan Huo and ends at the Xi Wu. The total length of the expressway is approximately 55 km. There are 27 nos of bridges and viaducts in Section 1 and 38 nos. of bridges and viaducts in Section 2. The typical pavement structural section comprises wearing course, base course, roadbase and subbase. The typical overlay at bridge and viaduct comprises wearing course and waterproofing cement layer. We have carried out a review on the pavement condition and investigate the maintenance cost to be employed in order to achieve a cost effective remedial measure with minimum disruption to the revenue.