Pumping Concrete through an Operational Underground
Practical Considerations in Pump Suction Arrangements
The single most important function of a pump suction system is to supply an unencumbered, evenly dis-tributed flow to the pump. This is true regardless if the intake configuration is a single pipe, an open sump, or a river. Secondly, the pump suction system should not promote the external introduction, or in-
Dynamic Concrete Pumping, Inc was started by Chad Jewell in the mid 1970's to provide services in concrete pumping, pressure grouting, soil stabilization and chemical grouting. Later we started with augured piling in early 1982 and in 1992 Dynamic severed the concrete pumping and grouting service and now concentrates only on augered piling.
Operating And Maintaining Underground Storage Tank Systems
underground piping connected to the tank that has at least 10 percent of its combined volume underground. The federal regulation applies only to USTs storing petroleum, including biofuel blends, and certain hazardous substances. &Mmeans operation and maintenance procedures that owners and operators must follow to keep UST systems from leaking
Nov 23, 2013 · 18. Underground Mine Dewatering Techniques • In underground mines, the conventional approach is to allow groundwater to enter the workings, effectively using the mine itself as a drain • The water entering the mine is passed along roadways (by pumping or gravity) to a deeper part of the mine (sump) or shaft bottom, to be pumped out via
The Noremac Group of Companies - Concrete Pumping Services
The Noremac Group of Companies provides exceptional concrete pumping services to its Western Canadian Customers through 4 divisional offices. With the company being founded and our head office remaining in Edmonton, we have strategically placed offices in Kamloops BC, Saskatoon SK, and Regina SK, which has allowed us to cover the largest
Batching, Mixing, Transporting, and Handling Concrete
Stationary Mixing. Concrete is sometimes mixed at the jobsite in a stationary mixer or a paving mixer (Fig. 10-2). Stationary mixers include both onsite mixers and central mixers in ready mix plants. They are available in sizes up to 9.0 m. 3 (12 yd. 3) and can be of the tilting or nontilting type or the open-top revolving blade or paddle type
Chapter 2 Types of Shotcrete and Applications Corps of
would be done for conventional concrete. The mixed material is fed to the delivery equipment, such as a concrete pump, which propels the mixture through the delivery hose by positive displacement or by compressed air. Additional air is added at the nozzle to increase the nozzle discharge velocity. c. Comparison of dry-mix and wet-mix processes.
From the Forebay, the Cordelia Pumping Plant sends the water through underground pipelines to Napa County, Vallejo and Benicia cities, and Travis AFB. South Bay Aqueduct The South Bay Aqueduct collects water from Bethany Reservoir in the Delta near Tracy, where the South Bay Pumping Plant lifts it 566 feet to the aqueduct's twin pipelines and
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requiring greater pumping pressures to move concrete through the line. Whenever possible, use a longer radius bend. However, if space is a problem, short radius bends are suitable, but proper concrete mix design and pump selection are more important. Reducers Most piston pumps have a 6-to 8-inch diameter discharg e pipe while placing lines are usu-
Dec 06, 2019 · Dewatering Methods. Construction dewatering from open excavation or trenches can be done by several methods. However, the most simple of all is the gravity drain using drainage channels carrying away water from the area to be worked to the discharge point. Other feasible ways for dewatering are water pumping, siphoning, or using large
Contact our nearest regional office from 8 AM to 5 PM, Monday through Friday. If you have an after-hours emergency, call 877-481-4901. Eastern Region, Spokane Valley 509-329-2100. Northwest Region, Kent 253-395-6750. Southwest Region, Tumwater 360-236-3030.
Standards and enforcement policy for construction concrete
May 02, 2013 · You raise a number of specific concerns regarding OSHA's standards and enforcement policy for construction concrete pumping operations using "concrete boom pump trucks." These include equipment such as truck-mounted straight-through concrete pumps, trailer-mounted or skid-mounted concrete pumps, separate concrete pumps, and shotcrete/gunnite
F. Direct concrete through chutes to prevent it from striking reinforcement or sides of the form above the level of placement. Avoid segregation and coating of the surfaces with paste which may dry before concrete reaches its level. G. Submit a concrete mix design to AW for approval prior to placing any concrete by pumping. 3.04 THRUST BLOCKING A.
training.gov.au - CPCCLBM3001 - Licence to operate a
The concrete placing boom includes a knuckle boom capable of power-operated slewing and luffing to place concrete by way of pumping through a pipeline attached to, or forming part of, the boom of the plant. overhead or underground electrical assets and service pipes, including: hand signals used in concrete placement operations;
In any pumping system, the role of the pump is to provide sufficient pressure to overcome the operating pressure of the system to move fluid at a required flow rate. The operating pressure of the system is a function of the flow through the system and the arrangement of the system in
Introduction to Pumping Stations for Water Supply Systems
and water booster pumping stations in potable water distribution systems. 1.2 SCOPE. Criteria is provided for pumping units operating as components in distribution systems. Guidance is provided for sizing and selection of pumps and pump drives, piping, control valving, flow metering, pump station structures, and operational features.
(DOC) Concrete Pumping History | Erdenebaatar Ganbaatar
Concrete Pumping History A concrete pump is a tool used for transferring liquid concrete by pumping. There are five types of concrete pumps. Although no definitive record exists documenting the first use of a concrete pump, the first patent for a concrete pump was established in 1913 in the U.S. Germany became the leading technology innovators in concrete pump development, and used the method