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Dewatering and Ground Water Control In the UAE and Gulf States, a high water table means groundwater lowering is necessary for nearly all construction and civil engineering projects. Were the dewatering experts, delivering whatever you need to get the job done. Building & Construction Any problems or delays on your site can mean missed deadlines and financial penalties. With a high water table in so many areas across the UAE and Gulf States, you need a proven provider. Water Companies We have the best range, widest coverage and depth of expertise to meet the demands of the water industry, local municipalities and other service providers across the region. Quarries & Mines These are among the toughest environments in the world to work in, placing special demands on pumping equipment used and the people who deliver and service it. So you need to talk to the experts. Tunnelling We have huge expertise in tunnelling applications, gained in the UAE and UK. Thanks to the breadth of our hire fleet and the skills of our people, we can deliver the most effective pumping schemes however tough the environment or location. Khansaheb Sykes are leaders in dewatering solutions. No other provider in the UAE, Middle East and MENA regions has as much expertise as Khansaheb Sykes in deep well dewatering and groundwater control, with equipment and services for both hire and sale of diesel centrifugal pumps and bore hole deep well pumps. Our dewatering capabilities have been tried-and-tested many times in the harsh climate and our dewatering pumps and deep well bore hole pumps are well adapted for the saline water conditions found in this region. 24 Hour Service Khanseheb Sykes guarantee you quality dewatering equipment in all forms of groundwater control and service, by fully trained and experienced engineers on call 24/7, 365 days a year. Locations Throughout The Middle East Service centres and agents across the Middle East with over 150 employees in ground water control, we offer fast delivery of dewatering equipment. Free Site Survey Free, no obligation, site surveys and quotations for all aspects of ground water control. Full Installation Service of Ground Water Control Equipment Fast, cost-effective ground water control installations. Price Competitive We provide a price competitive, sales and support service for our extensive range of dewatering pumps. Ground Water Control, Wellpoint Dewatering, Deep Well Systems & Pump Hire from Khansaheb Sykes With so many excavations reaching below the water table, our powerful diesel dewatering centrifugal pumps and deep well bore hole pumps and proven services, help you to control and remove subsurface water quickly and effectively. Khansaheb Sykes has more expertise in wellpoint dewatering, ground water control and general pump hire than any other provider in the region. You may have the best-run site but, without efficient groundwater control, you can soon get bogged down in costly and uncomfortable problems, with serious implications for the project and Health and safety. That's where Khansaheb Sykes delivers the optimal dewatering solution. Khansaheb Sykes will provide you with technical assistance for the selection of the most efficient dewatering method for your particular job or site. We can then manage the system, leaving you to enjoy the cost savings and allowing you to carry on with the rest of your building and construction requirements. Dewatering Dewatering is the removal of water from solid material or soil by wet classification, centrifugation, filtration, or similar solid-liquid separation processes. Dewatering is the common term used to describe the removal or draining groundwater or surface water from a construction site by pumping or evaporation. On a construction site, this dewatering may be implemented before subsurface excavation for foundations, shoring, or cellar space to lower the water table. This involves the use of submersible "dewatering" pumps, centrifugal pumps, eductors, or application of vacuum to well points. Construction of buildings, powerhouses, dams and many other structures requires excavation below the water table into water-bearing soils. Khansaheb Sykes delivers dewatering solutions on such excavations requiring the lowering of the water table below the slopes and bottom of the excavation to prevent raveling or sloughing of the slope and to ensure dry, firm working conditions for construction operations. We can control groundwater by means of one or more types of dewatering systems appropriate to the size and depth of the excavation, geological conditions, and characteristics of the soil. Construction sites are dewatered for the following purposes: Provide suitable working surface of the bottom of the excavation. Stabilise the banks of the excavation thus avoiding the hazards of slides and sloughing. Prevent disturbance of the soil at the bottom of excavation caused by boils or piping. Dewatering Methods Lowering the water table can also be utilised to increase the effective weight of the soil and consolidate the soil layers. Reducing lateral loads on sheeting and bracing is another way of use. A number of dewatering methods are available for controlling the inflow of water into an excavation; the choice of method will depend on the nature and permeability of the ground, the extent of the area to be dewatered, the depth of the water table below ground level and the amount by which it has to be lowered, the proposed methods of excavation and ground support, the proximity of existing structures, the proximity of water courses etc. Khansaheb Sykes offers free, no obligation, site surveys and quotations for all aspects of dewatering and ground water control. Ground Water Control Without efficient ground water control, even the best run sites using the latest technology can run into considerable difficulties. A water logged site not only causes delays, which can incur expensive penalties, it can also be hazardous for those working on the site. Groundwater pressure can collapse workings without warning. Efficient groundwater control is an absolute necessity where the depth of the proposed excavations is likely to reach below the standing water table for the excavation area. Khansaheb Sykes has the expertise and specialist equipment to deliver the best dewatering solution. Wellpoint Dewatering Wellpoint dewatering systems enable you to lower the groundwater table adequately for deep and large construction sites. It has proven to be a very flexible system. The water from high permeable soils is pumped from Wellpoints, installed along the trench of the site. The Wellpoints are jetted and spaced to obtain an efficient drawdown against lowest capacity. The Wellpoints with integral strainers are joined to transparent flexible hoses, which are connected by quick release couplers to the ring main header pipeline. Wellpoint dewatering is done either by gravity or vacuum. The Wellpoint dewatering system utilises self-priming, vacuum assisted centrifugal pumps. Wellpoint dewatering is one of the most economical, flexible and stable methods of dewatering available. We provide a complete service: from site investigation and calculations, using our knowledge of previous subsoil conditions, to recommending and installing appropriate dewatering equipment. Typically, we install a number of Wellpoints, with tubes 40mm to 60mm in diameter, protected by a filter screen, so collecting underground water efficiently. All our Wellpoint dewatering pumps are fitted as standard with high capacity vacuum pumps, enabling the maximum drawdown and greatest number of Wellpoints to be installed. Pumps deployed include the Univac WP150/60 high efficiency, fully automatic general purpose unit, either diesel or electric. Wellpoint Dewatering - Closed Ring Installation When you need to excavate below 7-9 metres in water-bearing aquifer, we can install a multi-stage system of Wellpoint dewatering. Wellpoint Dewatering - Progressive Line Installation Designed for pipelines and other similar applications, a progressive or roll along dewatering approach is installed alongside the route, preceding excavation and pipe laying. Equipment from a previously completed and backfilled section is installed at the head of the line, removing the need for large quantities of equipment. Khansaheb Sykes has the expertise and specialist equipment to deliver the best Wellpoint Dewatering solution. Although the principle is straightforward, considerable Wellpoint Dewatering expertise is necessary to implement reliable and efficient ground water control systems. The equipment and method of operating has been developed by Khansaheb Sykes specialists as a result of their experience over 35 years in the region. Dewatering - Deep Bored Pumping Well When the water table needs lowering below 9 metres, conventional vertical Wellpoint Dewatering in stages isnt feasible or economical. We provide an alternative the tube or bored well. A hole is bored to the required depth a mesh screen lining then allows water to accumulate at the bottom, which is removed by a pump installed in the well. Dewatering pumps typically used for deep well gravity drainage include Pumpex electric submersible units: these pumps permit excavation down to 22m in a single stage. Deep Well Dewatering Deep Well dewatering systems enable you to lower the groundwater table to a considerable depth. A submersible dewatering pump is installed at the bottom of the well, of which the casing generally has a minimum diameter of 150 mm. The discharge pipes from the submersible pumps of a number of adjacent wells are connected to a common delivery main. The water is raised from the well by a multi-staged pump which generates a high head corresponding to the depth of the well. Deep Well groundwater control systems are employed to lower groundwater levels to provide stable working conditions in excavations. A Deep Well system consists of an array of widely spaced bored wells fitted with multi-stage electric submersible pumps. Deep Well systems are effective in a range of soil conditions from gravel to fine sands. This dewatering technique is particularly suited to deeper excavations or where artesian groundwater pressures threaten base stability. Deep Wells can also be used where small amounts of drawdown are required over large areas, such as for trenches. Deep Wells typically consist of vertical or inclined bores, usually in the order of 200mm to 300mm diameter placed through the strata requiring dewatering or pressure relief. A suitable uPVC well casing will be placed in the borehole, consisting of screened and cased sections. An adequate filter pack is installed to both maximise well yield and inhibit the movement of fines. After well development, airlifting within the well casing is carried out before a suitable electric submersible borehole pump is installed. Open Dewatering Open dewatering systems enable you to lower groundwater table adequately in cohesive and low permeable soils. Water is pumped off directly from sumps (ditches) along the toes of the slopes of the excavation works. The suction hose with strainer is merely placed in the sump and the collected water is primed and discharged. This makes the open dewatering system easy to install and simple to operate. The open dewatering system utilises self priming or vacuum assisted centrifugal pumps. The Sykes GP range of pumps are ideally suited for this open dewatering application. Dewatering Pumps Our powerful dewatering pumps and proven services help you to control and remove subsurface water quickly and effectively. Our dewatering and ground water control capabilities have been tried-and-tested many times in the harsh climatic and aggressive saline water conditions found in the region and around the world. Typical dewatering pump applications include pit dewatering and general dewatering, lowering the water table, all general pumping schemes and applications, building and construction sites, civil engineering, water companies, local municipality works, tailings disposal, slurry transfer, ash handling, water boosting and pipeline filling and testing. In addition to our hire fleet and contract equipment, dewatering pumps are available for purchase. We maintain an average stock holding of 25 new dewatering pumpsets plus all associated accessories for sale. We can put together complete packages based on your requirements. Dewatering - Centrifugal Pumps The Khansaheb Sykes range of robust and highly reliable centrifugal pumps are designed for handling high volumes of water. Our centrifugal pumps convert the input power to kinetic energy in the liquid by accelerating the liquid by an impeller. Water enters the pump through the eye of the impeller which rotates at high speed. The water is accelerated radially outward from the pump chasing. A vacuum is created at the impellers eye that continuously draws more water into the centrifugal pump. Centrifugal pumps are used for large discharge through smaller heads. The centrifugal pumps available from Khansaheb Sykes are fully automatic and dry priming. Dewatering - Electric Submersible Pump Hire Our range of Khansaheb Sykes submersible drainer pumps are ideal for dewatering at all kinds of construction sites. Their easy handling and excellent capacity also make them ideal for many industries and ground water control applications. Sykes Submersible Drainer pumps range from 50mm to 200mm. The amount of material Khansaheb Sykes submersible drainer pumps can shift depends on the size of the pump the constitution of the material and the particular application. Pumpex units for drainage, sludge and more are the best in the pumping business. Fully portable and providing hours of unattended dewatering pump operation, simply choose the size and model for your application or location. We have developed a range of submersible pumps with Pumpex to meet the demanding requirements of UAE and Gulf State customers, lifting water from great depths and lowering the water table. These pumps are unique to us and combine reliability with excellent serviceability, resulting in unrivalled operating economy. They deliver hours of unattended operation in even the toughest environments. Dewatering - Hydraulic Submersible Pump Hire When suction lift requirements exceed nine metres for diesel driven pump sets, the ideal dewatering solution is using a hydraulically driven submersible pump - a centrifugal pump driven by an integral hydraulic motor. Revolutionary Sweepax pumps are only available from Khansaheb Sykes. Accessories for Ground Water Control, Wellpoint Dewatering, Deep Well Systems & Dewatering Pumps To accompany the dewatering solutions we can deliver, we can offer the most comprehensive range of hoses, fittings, control panels, settlement tanks, drop trays and fuel tanks. A one-stop shop for all your ground water control and dewatering requirements however simple or complex. For sustained performance and maximum reliability, our dewatering and ground water control solutions are hard to beat. Our equipment is precision manufactured featuring hardwearing cast-iron parts and corrosion resistant materials throughout. Our pump units, including diesel pumps, electric pumps, submersible pumps, dewatering pumps, centrifugal pumps and hydraulic pumps ranging from 1" up to 12" are used across many industries for ground water control and dewatering. If you have a requirement for ground water control, but not sure whats the best dewatering solution, our experienced technical staff are on hand to offer advice and site inspections where necessary without charge. Whatever your dewatering requirement, Khansaheb Sykes can meet your needs to offer a complete ground water control solution. Through our depots and offices, we provide a local hands-on service nationwide. Our dewatering products and ground water control services are just a phone call away. To get further information or advice call us on 00971 800 79537. Site Navigation