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| INTRODUCTION: |
KILLICKS Bearings are made of neoprene and are supplied either plain or reinforced with steel plates. depending upon the requirements of the particular design. |
KILLICKS Bearings utilise the ideal properties of neoprene to the full extent to produce a type of bearing which fulfils all the required design functions at an economic price. |
KILLICKS Bearings act as "Cleave" elements of a structure. adapting themselves to the varying support conditions. so as to produce the nearest appoximation to the theoretical support conditions on which the engineering design is based |
KILLICKS Bearings are ideally suited for rail and road bridges, aqueducts, chimneys. nuclear domes, jetties, water tanks, industrial structures, buildings , machinery foundatiqns etc. |
KILLICKS have been supplying elastomer bearings since 1972. These bearings have been supplied in various sizes and to various projects throughout the country. |
THE REQUIREMENTS FOR BEARINGS IN STRUCTURES |
At the supports of a structural element. such as a bridge-deck. or a large-span floor. it is often desirable that the horizontal loading transmitted to the supporting member should be as small as possible. This can be achieved by inserting a bearing between the deck. or slab and its support which will allow horizontal and rotational movement to occur freely with only small horizontal forces. In addition.the bearing will prevent excessive local stresses in the supporting member such as those due to uneven contact between the two surfaces. |
TYPES AND ADVANTAGES OF KILLICKS BEARING PADS |
KILLICKS Bearing pads are available in three different types viz plain. Laminated (steel reinforced) and encased. |
KILLICKS Bearings offer the following advantages: |
Low cost, Simultaneous movement in two directions, Simultaneous rotation about 3 axes, Support vertibal' as well as horizontal loads. Simple to install. No maintenance. Weather resistant. Durable. Last as long as the structure. |
DESCRIPTION OFTHE BEARING & INSTALLATION: |
All bearings which rely on a compressible material for their functioning can be overstressed if not installed correctly. This overstressing can occur more easily when the bearings are used with precast elements. If the seating faces of the element and the abutment are not truly plane and parallel. Where the bearing is used with in-situ construction such overstressing is much less possible. It is therefore necessary to ensure that the seating faces of the element and the abutment are plane and parellel. |
In theory, the bearing does not need to be fixed to either the abutment or the beam, as the coefficient of friction on these two contact surfaces is high and therefore no movement can take place between the bearing and the abutment or beam. In practice, however. it is usually more convenient to fix the bearing in position with an epoxy resin adhesive. to ensure that it is not. displaced during erection of the beams or concreting. |
KILLICKS Bearings are available in almost any size with a manufacturing limitation on plan dimension of 1 metre sq. A variety of basic. sizes are made as standard. but non-standard thicknesses are also available against specific orders. |
REQUIREMENTS AS PER IRC STANDARDS: |
KILLICKS have been using imported chloroprene material of grades. such as Neoprene WRT, Bayprene 110 or equivalent. All the physical & chemical properties of the elastomer used in the manufacture of bearings conform to the IRC/MOST Standards. The steel plate used in the product is as per IS-2062 and procured directly from SAIL. |
KILLICKS have been prequalified by M.O.S.T. All the inhouse testing facilities are available as required by IRC Standards. |
DESIGN: |
KILLICKS Bearings are individually designed to suit the particular requirements of each job. This not only allows for loads and rotations to be catered for without providing an over size bearing, but it also allows the plan dimensions of the bearing to be adjusted to suit the location. The plan size of KILLICKS Bearing Pad is determined by the maximum vertical load it has to carry. The Pad is generally designed to work at a compressive stress not exceeding 100 kg / cm2. |
KILLICKS have qualified and experienced engineers, who can help in designing the elastomer bearings for a particular project. A separate design data sheet can be made available on request. |
