Abstract:
A pile guide for supporting a pile as it is driven into a substrate, comprises: a base frame having a planar substrate-engaging surface; and a pile guide member mounted on the base frame, the pile guide member being configured to guide a pile in a predetermined direction therethrough as it is driven into a substrate. The pile guide member is pivotally mounted on the base frame, with pivotal movement of the pile guide member varying the predetermined direction relative to the planar substrate- engaging surface of the base frame.
Abstract:
A system for aligning a pile during pile driving, comprising: a pile (16) having a laterally protruding coupling (20) for a tether; and a pile guide (10) for supporting the pile as it is driven into a substrate, comprising a base frame (12) and a pile guide member (14) mounted on the base frame (12), the pile guide member (14) having in its periphery a slot (24) which is configured to allow the laterally protruding coupling (20) to pass therealong as the pile (16) passes through the pile guide; wherein the pile and pile guide member comprise two pairs of slidably interfitting profiles (52, 86) which are configured to resist gaping in the slot (24) of the pile guide member (14) as the pile (16) is driven therethrough into the substrate.
Abstract:
Apparatus (10) for driving a pile into an underwater substrate, comprises a pile guide (11) having a base frame (12) with a guide member (14) mounted thereon, the guide member configured to guide a pile as it is driven into a substrate when the base frame is resting thereon. The base frame (12) defines a substantially rectangular platform (16) for carrying a device for driving a pile into a substrate, and a power supply for supplying power to drive the device, during deployment. Once deployed, a pile (50) is positioned in the guide member (14) and the device (2) is lifted onto the pile (50) . The power supply (30) drives the device (2) as the pile (50) is driven into the substrate.
Abstract:
A pile guide for supporting a pile as it is driven into a substrate, comprises: a base frame having a planar substrate-engaging surface; and a pile guide member mounted on the base frame, the pile guide member being configured to guide a pile in a predetermined direction therethrough as it is driven into a substrate. The pile guide member is pivotally mounted on the base frame, with pivotal movement of the pile guide member varying the predetermined direction relative to the planar substrate- engaging surface of the base frame.
Abstract:
Apparatus (8) for positioning piles relative to one another in a substrate (14), comprising a template (10) and a pile guide (12) releasably attachable to the template (10) in any one of at least a first location (20) and a second location (22) when guiding a pile into the substrate. The first and second locations (22, 24) are spaced apart to enable the pile guide (12) to be releasably attached to the template (10) in different positions relative thereto. The template (10) includes apertures (38) which define part of an integral guide for a pin pile for pinning the template (10) to the substrate (14).
Abstract:
Described herein is a method of controlling call admission for packet switched networks, each network including at least two local area networks (50, 60) and a connecting network (70). The method comprises transmitting a burst 5 of trial data of the same size as the packet to be transmitted from a first node (52, 54) in a first local area network (50) to a second node (62, 64) in a second local area network (60) via the connecting network (70). The connecting network (70) comprises a plurality of routing nodes (72, 74, 76, 78, 80) for routing the burst of trial data of the same size as the packet to be transmitted from a first node (52, 54) in a first local area network (50) to second node (62, 64) in a second local area network (60) via the connecting network (70). The connecting network (70) comprises a plurality of routing nodes (72, 74, 76, 78, 80) for routing the burst of trial data to the second node in the second local area network along a particular path. The burst of trial data is reflected by the second node in the second local area network (60) back through the connecting network (70) to the first node in the first local area network (50). A comparison is carried out between the transmitted burst of trial data and the reflected burst of trial data to determine an estimate of packet loss rate of the path, and if the packet loss rate is acceptable a transmission of a continuous stream of data is initiated.
Abstract:
Described herein is a method of controlling call admission for packet switched networks, each network including at least two local area networks (50, 60) and a connecting network (70). The method comprises determining 5 success rates of previous calls from a first local area network to a second local area network and deciding to drop the call attempt based on the success rates of previous calls. In one embodiment, the current packet loss rate for calls from the first local area network to the second local area network is also determined, and the decision to drop the call attempt is based on that current packet loss rate. Additionally, the decision to drop the call attempt may be based on both the current packet loss rate and the success rates of previous calls. It is also possible to transmit a burst of trial data from a first node in the first local area network through the connecting network to a second node in the second local area network have the burst of trial data received at the second node reflected back to the first node, and to compare the reflected burst of trial data to the transmitted burst of trial data to determine whether transmission of a continuous stream of data can be initiated from the first node in the first local area network to the second node in the second local area network once the reflected burst of trial data has been received at the first node through the connecting network.
Abstract:
Described herein is a method of controlling calls for packet switched networks, each network including at least two local area networks (50, 60) and a connecting network (70). The method comprises the steps of determining an 5 acceptable packet loss rate for a call to be established between two of the local area networks, comparing actual packet loss rate to the acceptable packet loss rate, and dropping the call if the actual packet loss rate is greater than the acceptable packet loss rate. determining for how long a period the actual packet loss rate has been happening and utilising that period in deciding to drop the call. A recorded announcement may be played when the call is to be dropped. Alternatively, the priority of the transmission of the continuous stream of data can be changed when the actual packet loss rate is not acceptable and the above steps are repeated. Ideally, data relating to dropped calls is stored for future one.
Abstract:
A system for controlling pile orientation comprises a pile (14) and a pile guide (20) for supporting the pile as it is driven into a substrate, the pile guide comprising a base frame (10) and a pile guide member (22) mounted on the base frame. The pile (14) and the pile guide member (22) have slidaby interengaging profiles (30, 40) comprising first and second parts (32, 42), which are configured to axially rotate the pile to correct any misorientation relative to the pile guide as the parts slide past each other, and third and fourth parts (34, 44), which are configured to maintain a predetermined orientation of the pile relative to the pile guide once any misorientation has been corrected by interengagement of the first and second parts.