What is an aluminum grille? Treatment method for exterior facade and suspended ceiling

The aluminum grille is one of the main decorative materials for many large-scale projects, mainly used as a building exterior and suspended ceiling decoration material. It is mainly composed of vertical and horizontal distribution of main and auxiliary bones, and a continuous combination of grids to form a suspended ceiling with clear layers and a strong three-dimensional sense.

This changes the sense of oppression caused by other closed ceiling structures, making the visual effect continuous and smooth, and the structure rigorous.

Let’s take a closer look at the aluminum grille.

Product classification

Aluminum grids are mainly divided into flat aluminum grids and groove aluminum grids.
The groove aluminum grille is similar to the flat aluminum grille and is made of high-quality aluminum material.

The difference is that the shape of the groove aluminum grille is slightly larger than that of the flat aluminum grille, and there is a groove of about 1 cm at the bottom of the aluminum grille, so this type of aluminum grille is called the groove aluminum grille. The bottom of the groove aluminum grille is relatively wide, with a strong sense of three-dimensional decoration and good hardness, which is not easy to deform.

Product specifications

The standard for regular aluminum grilles (visible from the top) is 10mm or 15mm, with heights of 20mm, 40mm, 60mm, and 80mm available for selection.

The dimensions of aluminum grid are 50X50mm, 75X75mm, 100X100mm, 125X125mm, 150X150mm, and 200X200mm respectively

The common specifications and dimensions of sheet-shaped grids are (mm): 10 * 10, 15 * 15, 25 * 25, 30 * 30, 40 * 40, 50 * 50, and 60 * 60.

Aluminum grilles, through specific shaped units and combinations of units, make the interior ceiling decoration of the building both opaque and transparent. The grilles are arranged vertically, horizontally, and diagonally, and are considered uniformly with the layout of lighting fixtures, increasing the overall artistic effect of the decoration. It has the following characteristics:

1. It belongs to an open and transparent space, which is conducive to the layout and arrangement of ventilation facilities and fire sprinklers without affecting the overall visual effect;
2. Using high-quality aluminum alloy plates, it can be paired with the exposed frame system for decoration;
3. The color is uniform and consistent, and can be used indoors with a 10-year warranty without changing the color;
4. Installation and disassembly are simple and convenient, and the connection is firm. Each grille can be disassembled and disassembled repeatedly, making it convenient for maintenance;

5. Easy to match with various lighting fixtures and devices, can be paired with downlights and fluorescent lights, and can be assembled according to actual needs, which can achieve good results;
6. Highly consistent, and neatly arranged, with bright and neat lines and distinct layers, providing a clean and spacious space that is not dull or rigid.
   
   Aluminum grids have strict requirements for construction technology, especially when used as suspended ceilings. Taking aluminum grid-suspended ceilings as an example, we will review the construction and installation process.

According to the plan of the grid suspended ceiling, snap the vertical and horizontal layout lines of the component materials, the contour lines of the more complex parts, and the elevation lines of the suspended ceiling. At the same time, determine and mark the suspension points of the suspended ceiling.

Tightening treatment of suspended ceiling

According to the design requirements, metal expansion bolts or shooting nails are used to fix the ceiling connection, or directly fix steel suspension rods, galvanized iron wires, and flat iron suspension components.

3. Combination and assembly of grid units
   The assembly of local grids, individual and individual, unit, and unit, serves as a rhythmic pattern composition factor for the grid ceiling. If necessary, it should be assembled on the ground as much as possible, and then suspended according to the design requirements.
   To ensure a firm connection between components, nail fixation, adhesive bonding, tenoning, and reinforcement with square wood or iron pieces should be used according to the relevant technical requirements of woodworking operations.
4. Hoisting of grating
   Leveling and fixing, after the wooden grid is in place, pull the lower convex part up and tighten it with a suspension rod, loosen the upper concave part to move the suspension rod down, and then reinforce the grid area.

For grid-type suspended ceilings with compact grid layouts and large bidirectional spans, the central part of the entire suspended ceiling surface should also have a slight arch.

2、 Specific operation methods:

1. Snap line
   Use a level gauge to mark horizontal points at the corners of each wall (column) in the room (if the wall is long, a few points should also be marked in the middle), and mark a horizontal line (usually 500 mm from the ground). Measure from the horizontal line to the design height of the suspended ceiling, and use a pink line to mark the horizontal line along the wall (column), which is the lower line of the suspended ceiling grille.

At the same time, according to the ceiling plan, pop up the position of the main keel on the concrete top plate. The main keel should be divided from the center of the ceiling to both sides, with a maximum spacing of 1000mm, and the fixing points of the suspension rods should be marked with a spacing of 900 mm~1000 mm. If the fixed points of beams and pipelines exceed the design and regulatory requirements, the fixed points of suspension rods should be added.

2. Fixed hanging rod components
   Fix the suspension rod with expansion bolts. Can be adopted ф 6 suspension rods. The suspension rod can use cold-drawn steel bars and coiled steel bars, but when using coiled steel bars, they should be straightened mechanically.
   One end of the suspension rod is welded with an L30 * 30 * 3 angle code (the aperture of the angle code should be determined based on the diameter of the suspension rod and expansion bolt), and the other end can be threaded to produce a screw rod larger than 100mm, or a finished screw rod can be purchased for welding.

The fabricated suspension rod should be treated with rust prevention. The suspension rod should be fixed to the floor with expansion bolts and punched with an impact hammer. The aperture should be slightly larger than the diameter of the expansion bolt.

3. Installation of light steel keel
   The light steel keel should be hung on the suspension rod (if the ceiling is low, this process can be omitted and the next process can be carried out directly). Generally, 38 light steel keel is used, with a spacing of 900 mm~1000 mm. The light steel keel should be installed parallel to the long direction of the room and should be arched at a height of 1/200-1/300 of the room span.
   
   The cantilever section of the light steel keel should not exceed 300mm, otherwise additional suspension rods should be added. The extension of the main keel should adopt docking, and the docking joints of adjacent keels should be staggered from each other. After hanging the light steel keel, it should be leveled.
   
   For suspended ceilings with a span greater than 15m, a large keel should be added every 15m on the main keel, and welded firmly vertically to the main keel.
   
4. The installation of spring plates is connected to the light steel keel using a suspension rod (if the ceiling is low, the spring plates can be directly installed on the suspension rod and this process can be omitted), with a spacing of 900 mm~1000 mm, and then the spring plates are clamped on the suspension rod.
   
5. The assembly of the main and auxiliary bones of the grille shall be pre-installed below according to the requirements of the design drawings.
   
6. For grid installation, the preassembled grid ceiling shall be hung through the main bone hole with a hook. After the ceiling of the whole grid is connected, it can be adjusted to be horizontal.

Precautions

3. Aluminum grids can be mainly divided into groove aluminum grids and flat aluminum grids. Due to the large area of each layer, it is necessary to handle the vertical or parallel relationship between metal grilles and mineral wool boards, suspended ceilings, walls, and columns. In this regard, the relevant axis should be measured to the wall column elevation, and the line should be drawn according to this benchmark line to find a rule for plastering, to ensure that the wall is parallel to the axis and that two adjacent surfaces are perpendicular to each other. This serves as the reference plane for the plane position of the ceiling.
   
4. The arch lifting form and height of the grid ceiling: The arch lifting height can be around 1/200 of the 8M column spacing.
   
5. Due to the installation of regulating valves in various pipelines within the grid ceiling, inspection holes must be reserved at corresponding positions. The plane position of the fire sprinkler head should not coincide with the grid strip and should be straight in both directions. For this, a pedal bend greater than 900 can be made at the upper end of the fire sprinkler riser to fine-tune the plane position of the sprinkler head.
   
6. Retention of equipment inspection holes: Due to the installation of regulating valves in various pipelines within the grid ceiling, inspection holes must be reserved at corresponding positions, and the positions of inspection holes are not in vertical and horizontal rows.
   
   The following method can be used for this: first cut into holes, then add angle aluminum around the holes (the angle aluminum is first painted with the same color as the grid), and the lower skin of the angle aluminum is recessed into the lower skin of the grid by 2mm. Finally, adjust and assemble the grid strips that have been cut out of the holes and place them on the angle aluminum.
   
7. The node treatment between the suspended ceiling and the wall column: L20MM * 20MM angle aluminum can be used to connect with the square column, which can achieve a coordinated and consistent effect with the mineral wool board suspended ceiling edge keel. The connection with the column can be closed with a ¥ 35 stainless.
   
   The aluminum grille has a novel design and good ventilation effect, and is widely used in large parking lots, airports, subway stations, office buildings, supermarkets, shops, canteens, exhibition halls, dance halls, sports venues, subways, exhibition halls, shopping centers, passages, and corridors where lights are open.
   Let’s take a look at some project applications.
   
8. Application of Aluminum Grid Ceiling
   The Quan Art Museum is built next to a lake in Songzhuang, and the entire space design is simple and atmospheric, aiming to make this art museum a platform for promoting young artists. The two main functions of an art museum are art exhibition and art home.

The courtyard was raised 1.6 meters above the road, forming a semi-underground roof.

The aluminum grille ceiling integrates mechanical and electrical equipment and pipelines, natural light, and artificial lighting within or behind it, bringing a simple and consistent neutral atmosphere to the space and creating the best background for art exhibits. The stepped terraces on the roof form a height difference from each other, and natural light directly reaches each exhibition space.
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