Henan malpractice Construction Engineering Co., Ltd. is a specialized detection testing company, is one of the first place since the Henan Province qualification examination detected by enterprises. Qualified business scope includes pile qualification, qualification grade steel, an indoor environmental qualification, building energy detection, the main testing, materials testing, glass curtain wall detection, detection of roads and bridges, and a number of civil air defense projects detection testing qualification and testing laboratories. Leverage loading method is the use of leverage amplification principle Xunxian Quality Supervision Station, the end of the load applied on the test structure or component amplification method applied to the. When using a weight as a concentrated load, the load capacity is often subject to restrictions, so you can use leverage to magnify the loads acting on the structure, shown in Figure 1.4. Leverage Leverage loading method should ensure that there is sufficient rigidity Qixian Quality Supervision Station, and the arm should not be too long lever arm will make the effect applied to the measured structure or component produces the horizontal component, but not full vertical downward pressure. Therefore, the magnification of the general control lever 3 to 5 is appropriate. In addition, three loaded pivot (fulcrum lever reaction force A, acting on the structure of the focal point B, the weight of the load point C) should have been in the same line, this can be avoided due to structural deformation (tilt lever) caused lever magnification distortion. Advantages lever loading method is mainly reflected in the amount of load being less restrictive, the actual quality of the material is smaller than the value of the applied load, saving materials; and convenient lever production, load values ??stable. Henan malpractice Construction Engineering Co., Ltd. is a specialized detection testing company, is one of the first place since the Henan Province qualification examination detected by enterprises. Qualified business scope includes pile qualification, qualification grade steel, an indoor environmental qualification, building energy detection, the main testing, materials testing, glass curtain wall detection, detection of roads and bridges, and a number of civil air defense projects detection testing qualification and testing laboratories. Crack observation is very important for the detection of reinforced concrete components for content. Usually the first (batch) cracks in the maximum tensile stress at the crack load when the load is called Quality Supervision Station, and to crack wider than 0.05mm called cracking. Cracking load of concrete to determine principles are: (1) If a crack in the loading process, before taking a load of cracking load level. (2) If the average of the cracks before Hebi quality monitoring stations within the stipulated time holding charge, take the stage with the primary load for cracking load. (3) If cracks appear in the specified holding time after the end of the charge, to take the load of cracking load level. Allow time for a crack, but crack wide structural or component required to measure the crack of crack width for normal section crack flexural members shall be measured at the maximum tensile reinforcement wide crack in the side members; for oblique section Cracks should take diagonal crack width in the intersection of diagonal cracks or oblique crack with stirrups and bent steel Interchange amount. Each member of each survey area or determine the number of crack crack width, and generally the largest of the three projects is estimated to amount of crack. When the amount of crack with a brush beside the track along the crack crack deeds described below, and indicate the levels of the corresponding crack width under load. Changyuan Quality Supervision Station, the increasing prevalence of testing center (certified), quality monitoring stations provided by the increasing prevalence of Henan Construction Engineering Inspection Limited. Henan malpractice Construction Engineering Inspection Limited (www.hnrsjc.cn) is a leader in Zhengzhou, construction, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. The increasing prevalence of detection leadership with the staff warmly welcome all inquiries negotiations to create a better future for the increasing prevalence of detection.