(1) Elastic Line Setup To begin the installation process, use a water level gauge to mark a horizontal reference point at the corners of each wall (or column) in the room. If a wall is particularly long, it’s advisable to mark additional points midway along its length. From this reference point, establish a level line approximately 500mm above the ground. This line serves as the baseline for determining the final height of the ceiling, which will be 12mm below the level line due to the thickness of the white gypsum board. Using a powder line, project this level line onto the walls (or columns) to create the lower edge marking for the ceiling joists. Based on the ceiling plan, identify and mark the positions of the main joists on the concrete ceiling. These joists should be centered and symmetrically divided from the middle of the ceiling outward, ensuring a maximum spacing of 1000mm. Additionally, mark the locations for the hanger bolts, which should be spaced at intervals of 900–1000mm. If the existing beams or pipes require more frequent hanger bolt placements to meet design specifications, adjust the placement accordingly. (2) Installation of Hanger Bolts Hanger bolts are secured using expansion bolts. For ceilings where the joist span is less than 1000mm, a φ6 hanger bolt can be used; however, for spans reaching or exceeding 1000mm, a φ8 hanger bolt is recommended, along with the addition of a reverse support system. The hanger bolts can either be made from cold-drawn steel or round steel, though the latter should be straightened mechanically before use. For primary ceiling joists, if the span is under 1000mm, a φ8 hanger bolt is suitable. For spans greater than 1000mm, φ10 hanger bolts are preferable, again requiring a reverse support mechanism. One end of the hanger bolt is welded to an L30×30×3 angle bracket (the size of the aperture should correspond to the bolt's diameter and the expansion bolt). The other end should be threaded with screws longer than 100mm, either through custom welding or purchasing pre-threaded bolts. All hanger bolts should be treated for rust prevention. They are then fixed to the ceiling using an impact hammer, ensuring that the drilled holes are slightly larger than the diameter of the expansion bolt. (3) Installation of Hanger Bolts on Beams 1) Hanger bolts must be installed straight and possess adequate load-bearing capacity. If extension of embedded rods is necessary, ensure that the extensions are fully welded with uniform, complete welds. 2) The distance between the hanger bolt and the end of the main joist should not exceed 300mm. If this limit is exceeded, additional hanger bolts must be added. 3) Additional hanger bolts should also be placed under ceiling lights, air vents, and inspection hatches. In summary, the proper installation of these components ensures structural integrity and aesthetic appeal. Following these guidelines not only guarantees compliance with building codes but also enhances safety and longevity. As always, it’s crucial to double-check all measurements and adjustments before proceeding to the next step. Any discrepancies or deviations from the plan should be corrected immediately to avoid complications down the road. Remember, precision in construction is key to achieving the desired results. Finally, when working with materials like metal and concrete, safety precautions cannot be overstated. Always wear appropriate personal protective equipment, including gloves, safety glasses, and helmets. Proper handling of tools and machinery is essential to prevent accidents. By adhering to these practices, you can ensure a smooth and efficient construction process while minimizing risks. Rotary Cutting Pick,Spinning Tooth Bullet Head,Spinning Tooth Bullet Heads,Bullet Teeth Tungsten Carbide Rock Cutting Teeth Zhenjiang Weir Machinery Technology Co., Ltd , https://www.weircuttingpicks.com