Mastering the Complete Technology of Light Steel Keel Ceiling: A Comprehensive Guide

Dive deep into the intricacies of the complete technology of light steel keel ceiling, from its fundamental principles to advanced installation techniques. Learn about the materials used, including the properties and benefits of light steel, as well as the various types of keels and accessories available. Explore the design and engineering aspects of light steel keel ceiling systems, understanding how they support and enhance the structural integrity of a space. Discover the step-by-step installation process, from planning and preparation to finishing and maintenance. Gain insights into the latest innovations and advancements in the field, including smart integration with building management systems and energy-efficient design. With this comprehensive guide, become an expert in the complete technology of light steel keel ceiling.

Currently, some small and medium-sized projects and residential projects are still using traditional ceiling construction methods, such as wooden keel, flame retardant board, density board, wooden board, and other bases. However, with the emergence of new technologies and materials, people's requirements for design effects, processes, construction, and fire protection are increasingly high. Therefore, the core technology that construction and design companies need to master must also be continuously updated.

This article provides a detailed explanation of the knowledge related to light steel keel ceilings, mainly addressing the following issues:

1. The specific construction technology of light steel keel ceilings.

2. The details of light steel keel ceiling air conditioning vents, inspection hatches, and expansion joints.

**Light Steel Keel Ceiling Construction Technology**

The construction process includes: setting the benchmark height, keel layout and snapping lines → installing hangers, main keel, secondary (sub) keel, and transverse support keel → concealed project acceptance → sealing the board → anti-rust treatment of screws, filling board seams, and pasting anti-crack tape → painting with latex paint → cleaning → sub-item acceptance.

1. Setting the benchmark height and keel layout: Before installing the keel, the net height of the room, the benchmark height of the holes, and the benchmark height of the internal pipelines, equipment, and their brackets should be inspected according to the design requirements. Based on the design benchmark height of the ceiling, lines are snapped on the surrounding walls, and the keel layout is snapped, with accurate and clear positioning.

2. Installation of hangers and keel: Metal pre-embedded parts, steel rebar hangers, and steel keel hangers should be anti-rust treated before installation. Of course, if you usually use wooden hangers, wooden keel, and wooden finishes, they must be treated for moisture prevention, anti-corrosion, anti-worm, and fire prevention.

3. Ceiling anti-support setting: When the length of the hanger exceeds 1.5m and is less than 3m, due to the insufficient stability of the hanger, there will be safety hazards. To ensure stability, anti-support is needed. The method is to drill holes at intervals of two main keel spacings on the bottom edge of the CS60 main keel transverse support; the M8 full-thread hanger is passed through, and after the position is determined, it is fixed with nuts above and below.

4. Sealing board treatment: Sealing board treatment is the installation of the base board and the decorative board. It should be noted that before installation, the concealed project acceptance must be carried out, and the debugging and acceptance of the pipelines and equipment inside the ceiling must be completed before construction can begin.

5. Latex paint project: The decorative layer of latex paint requires two coats of putty to be brushed, and each layer of putty needs to be sanded smooth, and then the primer and topcoat are suggested to be one primer and two topcoats.

**Ceiling Detail Engineering**

1. Ceiling inspection hatch: The ceiling inspection hatch should be installed after the first layer of plasterboard is installed. The upper part of the inspection hatch should have an additional circle of main keel around it, and the hanger, etc., should be fixed directly from the floor slab. The lower mouth should add a sub (secondary) keel according to the size of the inspection opening to increase its stability. The installation height of the inspection hatch should consider the thickness of the plaster layer and should be 2~3mm lower than the surface of the plasterboard.

2. Air conditioning air outlet: The air conditioning return air outlet, outlet, and exhaust fan, etc., require a wooden frame to be set up to facilitate the installation of the air outlet and equipment. The size of the outlet and return air louvers must be calculated according to the air volume of the mechanical and electrical installation unit, and the spacing must meet the performance requirements of the air conditioning.

3. Ceiling expansion joint: When the single side distance of the ceiling exceeds 12 meters, an expansion joint should be set for the ceiling. The double-layer plasterboard ceiling needs to leave a 10~20mm expansion joint, the joint length is 30~50mm, and the distance from the edge of the expansion joint to the hanger is not greater than 300mm.

This article mainly explains the construction process of the light steel keel ceiling: setting the benchmark height, keel layout and snapping lines → installing hangers, main keel, secondary keel, transverse support keel → concealed project acceptance → sealing the board → anti-rust treatment of screws, filling board seams, and pasting anti-crack tape → painting with latex paint; construction precautions, and the setting of ceiling detail engineering (inspection hatch, air conditioning air outlet, expansion joint).