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JTC Corporation , formerly the Jurong Town Corporation, is Singapore's principal developer and manager of industrial estates and their related facilities. Wikipedia.

Tham K.W.,National University of Singapore | Wargocki P.,Technical University of Denmark | Tan Y.F.,JTC Corporation
Science and Technology for the Built Environment | Year: 2015

The Building and Construction Authority Green Mark Scheme in Singapore encourages better indoor environmental quality for healthier workplaces for occupants. However, studies have shown that green buildings do not necessary ensure better indoor environmental quality. This case study aimed to compare the prevalence of sick building syndrome symptoms and sick leave in a Green Mark Platinum and a non-Green Mark-certified building. Thirty-two employees from the Green Mark Platinum building and 33 employees from the non-Green Mark-rated building were surveyed to investigate their perceptions of the indoor environmental quality and prevalence of sick building syndrome experienced. Information concerning the offices and absenteeism of staff was collected as well. Compared to the Green Mark Platinum-certified building, the non-Green Mark-certified building was more leaky and had a higher air change rate (between 2.5 to 3 times higher), was about 1◦C cooler, and had a lower illuminance level. The statistical analysis of the data showed that there are significant differences in occupant perception; the Green Mark Platinum-certified building was cooler (p = 0.002); had fresher cleaner air and less odor (p = 0.002), had more relaxed monitor/keyboard comfort (p = 0.029), and had more satisfactory ergonomics (p = 0.033) at a 95% confidence level. Findings also suggested that the most frequent symptoms in the non-Green Mark-certified building were dry or irritated throat (15.2%) and lethargy or tiredness (15.2%), whereas the most frequent symptoms in theGreen Mark Platinum building were blocked or stuffy nose (12.5%), dry or irritated throat (12.5%), dry skin (12.5%), and lethargy or tiredness (12.5%). However, there is no statistically significant association between sick building syndrome symptoms and the offices (p > 0.05). Furthermore, analysis of the sick leave records failed to show that occupants in the Green Mark Platinum-certified building took fewer sick leave days as compared to the non-Green Mark building. This unexpected finding is not affirmative due to aberrations attributable to (i) differences in industry type between the offices studied, (ii) plausible settling in effects of occupants in the Green Mark Platinum-rated office, and (iii) high leakage characteristics of the non-rated office that resulted in an unintended 2.5 to 3 times higher air change rate (ventilation) compared to that of the Platinum-rated office. © 2015, ASHRAE. Source

Chu J.,Nanyang Technological University | Chu J.,Iowa State University | Yan S.,Tianjin University | Lam K.P.,JTC Corporation
Proceedings of the Institution of Civil Engineers: Ground Improvement | Year: 2012

Clay slurry or sewage sludge may be used as fill materials for land reclamation. However, the treatment of very soft materials of high water content is difficult. One major difficulty is how to create a working platform on top of the slurry layer for required soil improvement works such as vacuum preloading to be carried out. Several methods that can be used to create a working platform on top of a slurry layer are reviewed in this paper. These include (1) sun drying; (2) capping with sand or other good soil; (3) use of geotextile; (4) cement mixing; and (5) dewatering using drainage. The advantages and disadvantages of each method are elaborated. Practical examples are given to illustrate the application of some of those methods. Sewage sludge is more difficult to treat because of its organic content and a combined chemical and mechanical method needs to be used. Two conceptual methods for using sewage sludge and other waste materials for land reclamation are also proposed. Source

Brownjohn J.M.W.,University of Exeter | Pan T.-C.,Nanyang Technological University | Middleton C.,Enterprise Group | Tan S.C.,JTC Corporation | Yang G.,Nanyang Technological University
Journal of Performance of Constructed Facilities | Year: 2016

Experimental and analytical modal analysis and in-operation vibration measurements were performed on the massive concrete structural floors of several structurally connected 'units' of a six-level, multitenant industrial complex with total floor usable area exceeding 0.1 km2. The aim of the systematic study was to characterize vibration sources and factors that affect vibration serviceability, which is a major concern when changing usage patterns lead to conflicting requirements for vibration generation and tolerance for different types of industrial/commercial user. This was a rare investigation aiming to provide information on specific performance and relevant technologies for occupancy decisions by tenants and building management of similar structures. Floors evaluated were within different types of industrial single-occupant unit stacked up to six levels and having multibay floors with spans up to 12 m with first vibration mode frequencies greater than 8 Hz. These "high-frequency floors" display typical transient response behavior to footfalls, with response levels controlled by modal mass. Units were studied in typical operational conditions including warehousing, instrument assembly and testing, light electronic/mechanical manufacturing, and machining. Vibration sources included internal and external vehicles, human footfalls, and machinery. The study showed the most onerous form of loading to be forklift trucks and that higher level floors of the same type were least serviceable. Experimental modal analysis showed a surprising range of modal properties for nominally identical floors of the same type and the relevance to performance of modal mass. © 2014 American Society of Civil Engineers. Source

JTC Corporation | Date: 2013-10-21

Electric food blenders.

News Article | August 23, 2013
Site: gizmodo.com

No matter how robust a city's transportation infrastructure, no matter how timely or how many buses and trains run, there's still the issue of actually getting to the bus station. And it's not like you're going to walk there like a putz. Heck no, there are driver-less trolleys for that. Take the shuttle from Singapore’s Nanyang Technological University (NTU) to JTC Corporation's CleanTech Park, for example. Sure, you could walk, bike, or skate the 1.2 miles between the campuses, or you could hop aboard an all-electric Navia. These 8-passenger open air transports are built by France’s Induct Technology. The Navia rely on LIDAR (LIght Detection And Ranging) and optical cameras to generate real-time 3D navigation maps while avoiding obstacles, pedestrians, and other vehicles. Though with a top speed of 12.5 mph (20 km/h), any accident would generally be of the fender-bender variety. And unlike a human-controlled campus shuttles, passengers can select their desired destination from a touchscreen on the Navia's dash and automatically skip upcoming stops if no one is waiting to board. Even more impressive is that the Navia system doesn't require any infrastructure upgrades along its programmed route—no overhead power lines, no tracks, no nothing. When the shuttles are low on power, they'll drive themselves back to a wireless charging station (not unlike a Roomba) to top off. Google's driverless cars could well be the future. But there's nothing quite like futures that are already here today. [NTU via Gizmag]

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