Earthworks

Application

Earthworks are engineering works created through the moving or processing of parts of the earth’s surface involving quantities of soil or unformed rock. The earth may be moved to another location and formed into a desired shape for a purpose. Much of earthworks involve machine excavation and cut & fill.

Cut section

Cut slopes are rarely created greater than a slope of two to one (horizontal to vertical dimensions).[2] Cut sections of roadway or rail are characterized by the roadway being lower in elevation than the surrounding terrain. From an operational standpoint there are unique environmental effects associated with cut sections of roadway. For example, air pollutants can concentrate in the ”valleys”created by the cut section. Conversely, noise pollution is mitigated by cut sections since an effective blockage of line of sight sound propagation is created by the depressed roadway design.

Fill section

Fill sections manifest as elevated sections of a roadway or trackbed. Environmental effects of fill sections are typically favorable with respect to air pollution dispersal, but in the matter of sound propagation, exposure of nearby residents is generally increased, since sound walls and other forms of sound path blockage are less effective in this geometry.

There are a variety of reasons for creating fills, among them reduction of grade along a route or elevation of the route above water, swampy ground, or areas where snow drifts frequently collect. Fills can also be used to cover tree stumps, rocks, or unstable soil, in which case material with a higher bearing capacity is placed on top of the obstacle in order to carry the weight of the roadway or railway and reduce differential settlement.

Bored Pile

Diaphragm Wall

Tunnel Boring Machine

Stone Column

Jack In Pilling

Dynamic Compaction

Dynamic Compaction Method

Application

Dynamic compaction is a new soft soil treatment method using a towed non-circular module of 3, 4 or 5 sides to compact the ground, instead of using traditional rollers.

Dynamic Compactor (3-sides module)

Dynamic Compactor (5-sides module)

Hydraulic Jack-in Piling System

Application

GD Construction Sdn. Bhd. provides two types of silent, non-vibrating and pollution free as well as environmental friendly unique Hydraulic Jack-in Piling System, namely:-

GRIP BOX TYPE PILE JACKING SYSTEM

A hydraulic pile jacking system in which the pile is gripped equally at four sides by hydraulic operated Grip Box Component.

Pressure is then applied on the Two or Four nos. of hydraulic cylinders to push the pile into the earth gradually.

The 2.50-meter jacking stroke cycle is repeated until the pile is too low for the Grip Box.

Applied pressure is recorded at the interval of every meter.

DIRECT TYPE PILE JACKING SYSTEM

A hydraulic pile jacking system in which the pile is directly jacked at the top and pushed into the ground gradually.

The hydraulic jacking cylinder component is lowered down and the jacking sequence is repeated until the pile achieves its bearing capacity or alternatively until the top of the initial pile reaches the existing ground level in order to receive the extension pile.

Why Choose Hydraulic Jack-in Piling System

Cost
In comparison to the conventional piling system, the YZY Hydraulic Jack-in System with a simpler and rapid pile installation process is more cost effective due to significant operational cost savings that could be achieved through a higher productivity rate.


Environment
Through the use of hydraulic jacking installation process, the YZY Hydraulic Jack-in System is practically silent, non-vibrating and pollution free; hence particularly advantageous for regulated city zones, environmentally sensitive sites and sites that are or within sensitive structures. In addition, YZY Hydraulic Jack-in System promotes a clean and dust-free work site setting.


Confidence
During installation, each pile is applied with twice the working load and further individually test loaded to eliminate the assumptions and uncertainty associated with the conventional system, thus ensuring a high level of quality assurance.


Durability
There are no provisions for error by using the YZY Hydraulic Jack-in System compared to the conventional hammer-driven piling system. Tensile cracks normally associated with hammer-driven piles due to impact and reflected stress waves as well as necking in bored piles do not occur while using YZY Hydraulic Jack-in System. Therefore, undoubtedly piles installed using the YZY Hydraulic System are more durable.