(1) Elastic Line Setup To establish the horizontal reference points for the room’s walls or columns, use a water level gauge to mark these points on each surface. If a wall is particularly long, ensure you mark several intermediate points as well. From the established horizontal level line, which is typically 500mm above the ground, measure upward 12mm (equivalent to the thickness of one layer of gypsum board) to outline the ceiling design height. This marks the lower edge of the ceiling keel. Using a powder line tool, project this level line around the walls or columns to define the layout of the ceiling framework. Based on the ceiling plan, identify and mark the positions of the main keels, ensuring they are centered in the room and spaced no more than 1000mm apart. For the main keels, the fixed points for the hangers should also be marked, with a typical spacing of 900–1000mm between them. If the actual distance between beams or pipes exceeds the design specifications, additional hanger points must be added. (2) Installation of Hangers Hangers are secured using expansion bolts. For ceilings where the main beam span is less than 1000mm, a φ6mm diameter hanger can be used; however, for spans exceeding 1000mm, a φ8mm diameter hanger should be employed, and a reverse support system must be installed. Hangers can be made from either cold-drawn steel or round steel, though round steel should be mechanically straightened before use. For large-scale ceiling designs, when the hanger length is under 1000mm, φ8mm hangers are recommended. If longer, φ10mm hangers should be used, again with a reverse support mechanism. One end of the hanger should be welded to an L30×30×3 angle bracket (the size of the aperture should match the hanger diameter and the expansion bolt), while the other end can either be threaded manually or purchased pre-threaded. All hangers should undergo rustproofing treatment. They are then fixed to the floor using expansion bolts, drilled with an impact hammer. The hole diameter should be slightly larger than the expansion bolt's diameter to ensure proper fitting. (3) Hanger Placement on Beams 1) Hangers must remain straight and provide adequate load-bearing capacity. When extending embedded rods, lap joints should be used for welding, and the welds must be consistent and complete.
2) The distance between the hanger and the end of the main keel should not exceed 300mm; if it does, additional hangers should be added.
3) Additional hangers are necessary for ceiling fixtures like lights, air vents, and inspection panels. In practice, it’s crucial to maintain precision throughout the process. Small deviations in measurements can lead to significant issues later on. For example, if the hangers are improperly aligned, the entire ceiling structure may become uneven. Furthermore, always double-check that all materials meet the required standards for durability and strength. In some cases, it might be beneficial to consult with structural engineers to ensure compliance with building codes. While setting up the framework, take care to protect the work area from dust and debris, which could compromise the integrity of the installation. Finally, after completing the setup, thoroughly inspect the structure to ensure everything is secure and aligned as planned. Trencher Mining Bit,Trencher Mining Bits For Concrete Road,Customized Trencher Mining Bit,High Trenching Machine Cutter Head Zhenjiang Weir Machinery Technology Co., Ltd , https://www.weircuttingpicks.com