Flooring

Flooring

Raised Floor System

The raised access flooring system is applicable in old and new buildings. “With old buildings being converted into data centres and new buildings constructed with the provision of advanced cabling solutions in mind, the market in Hong Kong is expected to expand in the next few years” (Angela Tam).

The raised access flooring system is still more costly than other competing method, but it reduces waste (by reusing the system when moving and recyclable potential), installation time and allows easy maintenance and flexibility in fitting out and cabling.

Example of Free Axez 40/70 raised floor system

Description

Free Axez 40/70 raised floor system is made in Japan. The easy system of assembling units enables easy alteration of an office layout and future installation of office automation equipments. All units are made of zinc-coated steel plate, which is strong, durable, demountable, reusable and recyclable. This system allows flexibility layout, accommodates changes, easy maintenance and minimize waste generation.

The sizes of standard components are:

Base unit:
370 x 370 x 40mm height for axez.40.
370 x 370 x 70mm height for axez.70.

Corner plate: 198 x 198.

Channel plate: 298 x 126.

Under-sheet: 1,050 (25m-roll, 100m-roll).

Cost

Effective from 1 January 2002.

Installation charges is HK$30/m2

Example of supplier in Hong Kong

Kingsly Corporation Ltd.

11/F Nanyang Plaza

57 Hung To Road, Kwun Tong

Kowloon, Hong Kong

Example of installation in Hong Kong

KEL Employment Services Ltd.,
Contractor: Yat Hing Construction Co.
Ltd., June 2001.

Deson Technology Holdings Ltd.,
contractor: Deson-IES Engineering Ltd.,
October 2001.

Ernst & Young, contractor Deson
development Ltd., November 2001.

MTRC-Heng Fa Chuen station GMO,
contractor: Silktop Decoration
Engineering Co., January 2002.

Hong Kong Institute of Vocational
education (Tsing Yi), contractor:
Kenworth Engineering Ltd., February
2002.

Lung Hang Youth Centre, contractor:
Asian Construction Company, April 2002.

Advantages

Reusable and recyclable: the units are
easily demountable and reusable when
moving office. Also waste is reduced, as
the material is recyclable.

Reducing maintenance cost: rewiring
the office can be done easily by opening
the channel plate.

Fast installation: easy and fast
installation reduces construction time
and cost.

Solving headroom constraint problem:
A choice of 40 or 70 mm height solves
headroom limitation in most of old
buildings.

Light weight and high-strength
construction: the base unit can sustain
a 50mm diameter point load of 800kg at
center.

Large cable capacity: Large cable
capacity which facilitates crossing cable
and optical cable installation.

Preventing noise and resonation
design: multi support leg system ensures
stable sensation when walk and
preventing noise.

Recessed floor outlet box available:
Recessed floor power and data outlet box
with cover is acceptable for installation.

Example of installation overseas

Many examples in Japan for NTT offices,
banks, security companies, insurance
companies, schools, general offices.

Other countries: Netherlands, USA,
Singapore.

Semi-Precast Slab

A slab is called semi-precast when the lower portion of the floor slab is prefabricated at the factory. It is then hoisted and set into position on site and acts also as shuttering to receive the top layer of floor slab which is cast in-situ. The whole slab is a permanent composite of precast and in-situ concrete. As for precast facades, boxing-outs are cast at the designed locations during slab fabrication at the factory. The subsequent services installation also becomes more efficient.

The lower layer of semi-precast slab

However, it has been reported by contractor that the semi-precast slab is not suitable for large span structure. Careful handling is required, otherwise cracks would be appeared on the slab.

Self-Levelling Flooring System

The unique Self-Levelling Flooring System is a reliable, self-flowing and self-smoothing cementitious system for application directly onto all kinds of concrete, wooden, tile and terrazzo bases. It has been specially developed as a complete system, taking into account every aspect of floor preparation from start to finish. The system accomplish with a minimum of disruption and achieve high quality results, time after time. It is so efficient that contractors can, in the same amount of time and for a fraction of the labour costs, finish up to ten times the flow area they could manage using traditional methods. The end results are hard-wearing, long-lasting floor carried out quickly, economically and with a minimum of disruption.

Advantages of Self-Levelling Flooring System

Fast application (up to 300 m2 per hour at 6 mm thickness)

Fast setting (walkable in one hour)

No noise pollution

Clean and quiet working environment

Consistent quality as no site-mix is needed

Non-dust, super smooth, non-slip, non-shrink, seamless and very easy to clean

Low waste generation

Economical

Long term durability

Example Supplier for Self-Levelling Flooring System

ABS Building Systems (Far East) Ltd.

Unit 61, 8/F, Sino Industrial Plaza, 9 Kai Cheung Road
Kowloon Bay, Kowloon, Hong Kong

Tel: (852) 2798 0376
Fax: (852) 2758 2263

Example Application for Semi- Precast Concrete Slab

	Cheung Sha Wan West Phase-II, Hong Kong
	Tseung Kwan O Area 73A Phase-II, Hong Kong
	Tseung Kwan O Area 74 Phase-IV, Hong Kong

Example Suppliers for Semi-Precast Concrete Slab

	Golden Trend Construction Limited Bai Sha Shui Village, Long Xi, Long Gang District, Shenzhen, P.R.C. Tel: 2380 9605 Fax:2414 5766		Sun Fook Kong Construction (Concrete Products) Limited Shu Gang Road, Shekou District, Shenzhen, Guangdong, PRC Tel: 2828 1688 Fax: 2827 6275
	Lamma Rock Products Limited Architectural Member Engineering Company Building, Huang Qi Town, Nanhai, Guangdong Province, P.R.C. Tel: 2398 4018 Fax: 2789 1040		Unicon Concrete Products (Hong Kong) Limited D.D. 95, Lot No. 9-12, Ho Sheung Heung, Sheung Shui, N.T., Hong Kong Tel: 2477 0867 Fax: 2478 6220
	Main Kind Industrial Limited Xiangyuan Village, Longgang Pingdi Town, Shenzhen, Guangdong, P.R.C. Tel: 2336 1262 Fax: 2336 1077		Unicon Concrete Products (Hong Kong) Limited Heng Li, Dongguan, P.R.C. Tel: 2477 0867 Fax: 2478 6220
	Orientfunds Precast Limited Fu Lu Sha Region, Sha Tian Town, Dongguan, Guangdong, P.R.C. Tel: 2546 2612 Fax: 2517 0873		Wai Hing Construction Materials Company Limited West Nan Gang Road, Nan Gang, Huang Pu, Guangzhou, P.R.C. Tel: 2715 6942 Fax: 2713 0762
	Shen Zhen Sun Wah Concrete Products Company Limited Niu Shing Village, Nam Shan District, Shenzhen, P.R.C. Tel: 2893 4648 Fax: 2494 7251		Yau Lee Wah Concrete Precast Products Company Limited Qinghu Industrial District, Heping East Road, Longhua Town, Baoan Qu, Shenzhen, Guangdong, P.R.C. Tel: 2753 4388 Fax: 2753 4300

Low-Waste Buildings Technologies & Practices
Home