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Putzmeister was founded by Karl Schlecht in 1958. [3] Schlecht designed a mortar machine based on his diploma thesis at the University of Stuttgart. [4]In 1986, Putzmeister 52Z's were used in the Chernobyl nuclear accident, pumping over 300,000 m 3 (390,000 cu yd) of concrete to entomb reactor number 4, setting a world record at the time for volume pumping.
There are different types of concrete pumps. A common type of concrete pump for large scale construction projects is known as a boom concrete pump, because it uses a remote-controlled articulating robotic arm (called a boom) to place concrete accurately. It is attached to a truck or a semi-trailer. Boom pumps are capable of pumping at very high ...
A pumping station is an integral part of a pumped-storage hydroelectricity installation. Pumping stations are designed to move water or sewage from one location to another, overcoming gravitational challenges, and are essential for maintaining navigable canal levels, supplying water, and managing sewage and floodwaters. In canal systems ...
In 1947, Congress approved adding the city of Falls Church, Virginia, to the aqueduct system, and nearby portions of Fairfax County, Virginia, were added in the 1960s. [1]: 129–130 The U.S. Army Corps of Engineers built an additional intake and pumping station at Little Falls in 1959. [4]: 256
Concrete High School's school colors are purple and gold and their team mascot is the Lion. CHS's sports teams participate in the Northwest 1B/2B league under the Washington Interscholastic Activities Association. Concrete's Future Business Leaders of America was the fastest growing in the state during the 2012-13 school year. [11]
The PECO Building is a modernist office highrise in Center City Philadelphia.The building is the current headquarters of the PECO Energy Company, formerly the Philadelphia Energy Company (PECo), and one of the companies that merged to form the Exelon Corporation.
Area code 445 was first proposed in July 2000 as an overlay code on numbering plan area 215/267. [1] However, these plans were delayed and then rescinded in 2003 by the Pennsylvania Public Utility Commission. [2] The need for new phone numbers in area codes 215/267 was delayed until 2018.
Area code 835 was eventually approved by the Public Utility Commission on December 2, 2021. Assignment of central office codes in the new area code began on September 2, 2022. [4] When area codes were introduced in 1947, their middle digit was either 0 or 1. In 1994, area code 610 was the last area code assigned with digit 1 in that position.