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金属天花板悬挂系统检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准规定了在一个或多个反射平面附近的近似自由声场环境下,用包围声源(机器或者设备)的测量面上测得的声压级来测定噪声源声功率级或声能量级的方法。利用这些测量来计算噪声源产生的频带或A计权声功率级(或者在脉冲噪声或瞬态噪声情况下的声能量级)。本标准规定的方法适用于GB/T 19052定义的各种类型的噪声(稳态、非稳态、起伏、猝发声等)。在满足测量条件的情况下,本标准适用于各种类型和尺寸的声源(例如固定设备或缓慢移动设备、装置、机器、部件、组件等)。适于按本标准进行测量的测试环境可以位于室内或室外,被测噪声源安装在一个或多个声反射平面上或其附近。理想的环境是一个完全开放的空间,没有边界或除了安装噪声源的反射平面外无其他反射表面(例如,一个合格的半消声室),但在不太理想的环境下,规定了修正(在指定范围内)的方法。给出了按本标准测定的规定频带和A计权频率声功率级和声能量级的不确定度信息。不确定度符合GB/T 19052的2级准确度(工程级)。
本标准规定了Ⅱ级生物安全柜的术语和定义、分类、材料、结构和性能的要求、试验方法、检验规则、标志、标签、说明书、包装、运输和贮存的要求。本标准适用于Ⅱ级生物安全柜(以下简称安全柜)。
本标准规定了邮轮码头登船桥(以下简称等船桥)的形式、技术要求、试验方法、检验规则以及标志、包装、运输、储存等。本标准适用于港口邮轮码头接驳邮轮供旅客上下船所用移动式登船设备。
本标准规定了曳引式人货两用和货用施工升降机制造、安装、使用和维护的安全要求和技术要求。本标准适用于曳引驱动的、临时安装的、由建设施工工地人员使用的、带有吊笼/运载装置的可在各层站停靠服务并具有下列特征的人货两用和货用施工升降机:——吊笼/运载装置有导向。——吊笼/运载装置垂直运行或沿着与垂直面夹角大不超过15°的导轨运行。——吊笼/运载装置和其对重由经曳引轮的曳引钢丝绳悬挂而相连并由曳引钢丝绳和曳引轮绳槽之间的摩擦力来驱动。——导轨架架设时,需要或不需要其他独立结构物的支撑。——人货两用施工升降机可运载人员或人员和货物。——货用施工升降机只用于运送货物;但在装载和卸载时,允许受过培训的人员进入运载装置;在维护和检查时,如果需要,允许经授权的人员进入和运行运载装置。本标准不适用于:——GB/T 26557、GB/T 10054.1和GB/T 10054.2规定的施工升降机;——GB 7588、GB 25194和GB/T 25856规定的电梯;——由起重设备悬挂的工作吊笼;——叉车货叉支承的升降平台;——工作平台;——缆索车;——特别设计的军事用升降机;——矿用升降机;——舞台用升降机;——特殊用途升降机。
1.1x00a0;This specification covers metal ceiling suspension systems used primarily to support acoustical tile or acoustical lay-in panels. 1.2x00a0;Some suspension systems incorporate locking assembly details that enhance performance by providing some continuity or load transfer capability between adjacent sections of the ceiling grid. The test methods of Test Methods E3090/E3090M referenced in this specification do not provide the means for making a complete evaluation of continuous beam systems, nor for assessing the continuity contribution to overall system performance. However, the test methods can be used for evaluating primary structural members in conjunction with secondary members that interlock, as well as with those of noninterlocking type. 1.3x00a0;While this specification is applicable to the exterior installation of metal suspension systems, the atmospheric conditions and wind loading require additional design attention to ensure safe implementation. For that reason, a specific review and approval should be solicited from the responsible architect and engineer, or both, for any exterior application of metal suspension systems in the construction of a new building or building modification. 1.4x00a0;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5x00a0;The following safety hazards caveat pertains only to the test methods described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6x00a0;This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1.1 This specification covers metal ceiling suspension systems used primarily to support acoustical tile or acoustical lay-in panels. 1.2 Some suspension systems incorporate locking assembly details that enhance performance by providing some continuity or load transfer capability between adjacent sections of the ceiling grid. The test methods of Test Methods E3090/E3090M referenced in this specification do not provide the means for making a complete evaluation of continuous beam systems, nor for assessing the continuity contribution to overall system performance. However, the test methods can be used for evaluating primary structural members in conjunction with secondary members that interlock, as well as with those of noninterlocking type. 1.3 While this specification is applicable to the exterior installation of metal suspension systems, the atmospheric conditions and wind loading require additional design attention to ensure safe implementation. For that reason, a specific review and approval should be solicited from the responsible architect and engineer, or both, for any exterior application of metal suspension systems in the construction of a new building or building modification. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 The following safety hazards caveat pertains only to the test methods described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1.1x00a0;This practice covers the installation of suspension systems for acoustical tile and lay-in panels. It is applicable to contractors whose services are utilized for installing acoustical ceilings and to other trades if their activities are responsible for interference with ceiling components or performance as defined in this recommended practice. 1.2x00a0;While the practices described in this document have equal application to fire-resistive suspension systems, many systems impose additional requirements to obtain the fire endurance classification of particular floor-ceiling or roof-ceiling assemblies. These details are available from the listing agency and from the manufacturers. 1.3x00a0;Similarly, additional detailing is often necessary to meet sound attenuation requirements when ceiling plenums extend over contiguous rooms. Obtain these from the manufacturer of the acoustical material employed. 1.4x00a0;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems result in non-conformance with the standard. 1.5x00a0;While many of the practices described in this practice have application to the installation of metal suspension systems in exterior environments, the specific design of exterior ceiling installations requires the review and approval of the architect or engineer, or both, who are responsible for the construction of the building or modifications to an existing building. While recommendations from the manufacturer are solicited, it remains the final responsibility of the architect/engineer to ensure proper application of the materials in question. 1.6x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7x00a0;This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
5.1x00a0;This practice provides a standardized installation procedure for ceilings designed and installed as a diaphragm. When installed according to this practice, these ceilings have sufficient strength to resist seismic forces without lateral force bracing. 1.1x00a0;This practice covers the installation requirements of direct hung suspended t-bar type ceiling systems intended to receive gypsum panel products constructed as flat, single level, surrounded on all sides by a wall, bulk head, or soffit braced to the building structure to resist the effects of earthquake ground motions. 1.2x00a0;Ceiling assembly shall not be intended to support live loads. 1.3x00a0;This standard addresses ceiling systems with dead loads up to 10 lbs/ft2 (48.8 kg/m2). 1.4x00a0;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5x00a0;The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard 1.6x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate standard safety and health practices and determine the applicability of regulatory limitations prior to use. 1.7x00a0;This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4.1x00a0;Load Carrying Capacity:x00a0; 4.1.1x00a0;Most architectural specifications contain a uniform load requirement based on Specification C635. Additionally, it is useful to know the uniform loads of cross runners to evaluate their suitability for various ceiling loads. 4.1.2x00a0;The procedure detailed in this standard is intended to be used for the simple four foot span specified in Specification C635. It can be used for simple spans other than four feet, but an engineering analysis is required to determine the proper spacing of concentrated loads necessary to simulate a uniform load. 4.1.3x00a0;Various concentrated load combinations can be similarly tested or they can be calculated from the uniform load results by engineering analysis. 4.2x00a0;Connection Strength in Tension and Compression:x00a0; 4.2.1x00a0;Structural failure of grid systems under axial loading is controlled by the failure of connections between the grid members. Specification of the allowable axial loads is useful for designers and specifiers for determining which grid systems will be appropriate for specific job conditions. 4.2.2x00a0;Connection strength is particularly important where the grid installation is expected to experience lateral loads due to earthquake or wind. 4.2.3x00a0;Connection strength in both compression and in tension are specified in Practice E580 as mean ultimate test load in tension and in compression. 1.1x00a0;These test methods cover metal ceiling suspension systems used primarily to support acoustical tile, acoustical lay-in panels, or suspended T-bar type ceiling systems. 1.2x00a0;These test methods cover the determination of strength properties of suspended ceiling grid system components as follows: Tests Subsections Load Carrying Capacity 5.1 Connection Strength in Tension 5.2.2; 5.2.4 Connection Strength in Compression 5.......
4.1x00a0;Load Carrying Capacity:x00a0; 4.1.1x00a0;Most architectural specifications contain a uniform load requirement based on Specification C635. Additionally, it is useful to know the uniform loads of cross runners to evaluate their suitability for various ceiling loads. 4.1.2x00a0;The procedure detailed in this standard is intended to be used for the simple four foot span specified in Specification C635. It can be used to extrapolate for simple spans other than 4 ft. 4.1.3x00a0;Various concentrated load combinations can be similarly tested or they can be calculated from the uniform load results by engineering analysis. 4.2x00a0;Connection Strength in Tension and Compression:x00a0; 4.2.1x00a0;Structural failure of grid systems under axial loading is controlled by the failure of connections between the grid members. Specification of the allowable axial loads is useful for designers and specifiers for determining which grid systems will be appropriate for specific job conditions. 4.2.2x00a0;Connection strength is particularly important where the grid installation is expected to experience lateral loads due to earthquake or wind. 4.2.3x00a0;Connection strength in both compression and in tension are specified in Practice E580 as mean ultimate test load in tension and in compression. 1.1x00a0;These test methods cover metal ceiling suspension systems used primarily to support acoustical tile, acoustical lay-in panels, or suspended T-bar type ceiling systems. 1.2x00a0;These test methods cover the determination of strength properties of suspended ceiling grid system components as follows: Tests Subsections Load Carrying Capacity 5.1 Connection Strength in Tension 5.2.2; 5.2.4 Connection Strength in Compression 5.2.3; 5.2.5
This document applies to accessible technical ceilings and grids in meeting rooms as well as in entertainment and production sites for scenic representations. Establishments of this type are, for example, theaters, multi-purpose and exhibition halls, studios for film, television and radio, performance and scenery areas in the following facilities: concert halls, schools, exhibitions, bars, nightclubs, outdoor stages and rooms for shows, events, cabarets, vaudeville stages.
This European Standard delals with safety requirements for construction, manufacturing, installation, maintenance and dismantling of electrically powered vertical vertical lifiting platforms affixed to a building structure intended for use by persons with impaired mobility
This European Standard specifies a test method for determining the fire resistance of smoke extraction ducts. It is applicable only to smoke extraction ducts that pass through another fire compartment from the fire compartment to be extracted in case of fire. It represents fire exposure of a fully developed fire.
This European Standard deals with power operated temporarily installed builders hoists (referred to as "hoists" in this standard) intended for use by persons who are permitted to enter sites of engineering and construction,serving landing levels, having a cage:—designed for the transportation of persons or of persons and materials;—guided;—travelling vertically or along a path within 15° max. of the vertical;—supported or sustained by drum driven wire rope,rack and pinion,or an expanding linkage mechanism;—where masts,when erected, may or may not require support from separate structures.
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