The whole process of glass curtain wall design and construction

If you want to build a glass curtain wall, you must be very curious about how the glass curtain wall is made. Zhongdong Curtain Wall will lead you to understand the whole process of glass curtain wall design and construction today. I hope it will be helpful for you who want to build a glass curtain wall.

1. Glass curtain wall design stage

1. Glass curtain wall load calculation – to prevent natural disasters and man-made disasters

Wind pressure calculation:
A coastal project was lazy and calculated according to ordinary areas. On typhoon days, the entire glass curtain wall hummed like a blower. Later, according to the “50-year wind pressure value × 1.5 times”, although it may cost 180,000 yuan more in material costs, it is also possible to avoid a loss of 12 million yuan.

2. Node design – 90% of glass curtain wall leaks are caused here

[The master’s three-piece set of leak prevention]

① Column plug connection: leave a 15mm gap between the upper and lower columns, fill with weather-resistant glue + plug (to prevent rainwater from flowing along the gap)

② Open the fan drainage hole: drill a φ5mm small hole in the profile cavity (at least 2 per window)

③ Glue seam backup plan: apply another layer of sealant on the outside of the rubber strip (double insurance)

3. Cost-saving tricks

Profile grading:
The main columns visible to the naked eye use 80 series (wall thickness 3mm), and the beams blocked by the ceiling use 60 series (wall thickness 2.5mm)

Curtain wall glass used
The glass curtain wall in the low-rise area uses 6+12A+6 hollow glass (to prevent passers-by from smashing windows), and above 20 floors are replaced with 5+9A+5 (weight saving and load reduction)

2. Glass curtain wall engineering materials entering the site

Cavity drainage measurement: Pour half a cup of water into the profile groove, and it does not flow out in 5 seconds? The drainage hole is blocked!

Angle code adaptation: Insert the connector into the column, shake it with both hands, no “click” sound? Pass!

Insulation strip verification: Use a lighter to burn – black smoke is PVC (inferior quality), no smoke is PA66 (authentic)

The death red line of glass curtain wall

Corner collapse: Use a caliper to measure the edge collapse> 2mm? Directly return!

Stacking difference hidden injury: Two pieces of glass are stacked, and the gap difference at the four corners is> 0.5mm? The glass curtain wall installation is likely to explode!

3. Glass curtain wall construction
Six steps to install glass curtain wall keels
① Marking and positioning: The total station marks the “M” datum line (the steel nails are marked with red paint)
② Welding adapters: The full weld is as dense as fish scales (knock off the welding slag to check the quality)
③ Hanging the main column: Install from bottom to top, and the joints are staggered on the floor (to prevent weak layers)
④ Installing the beam: The level is close to the bubble, and it is not acceptable if it is half a grid off
⑤ Adjusting the three dimensions: The laser instrument scans, and the column in and out difference is ≤3mm
⑥ Tightening the bolts: First tighten the initial tightening and then tighten the final tightening (the torque wrench clicks twice)

Nationality:

Choose slow-drying glue in summer (surface drying time>40 minutes to prevent cracking)

Use quick-drying glue in winter (construction as usual at -5℃)

After applying the glue, put a warning tape: “Do not touch within three days!”

4. Acceptance and acceptance: There are mines in these 8 places
1. Glass curtain wall water spraying test (must do!)
Tools: car wash water gun (pressure ≥ 0.2MPa)
Technique:
Spray at a 45° angle 1 meter away from the glass curtain wall
Focus on spraying window corners/column seams
Continue for 30 minutes

Glass curtain wall acceptance standard: No wet marks on the inner wall

2. Hand-bending pressure plate test
Pry the middle of the pressure plate with a screwdriver. Is the deformation more than 0.5mm (about the thickness of a fingernail)? Install a pressure plate!

3. Open the five-door inspection of the door
① Opening and closing force: spring scale hook handle
② Locking: key rotates 360° without jamming
③ Sealing: A4 paper cannot be pulled out after closing the window
④ Drainage: pour 500ml of water and drain it within 10 seconds
⑤ Safety: the limiter is firm and does not shake

Consensus in the glass curtain wall engineering industry:
A good glass curtain wall depends on design for 70%, materials for 20%, and craftsmanship for 100%

Save money in the early stage, but lose money in the later stage!

Of course, there are more things to consider when making a glass curtain wall, and every place needs to be coordinated. For example, the design of the glass curtain wall needs to be deepened, the purchased materials must correspond to the drawings and be accurate, and the 1000 details of the glass curtain wall construction should also be paid attention to, as well as the precautions for the acceptance of the glass curtain wall. There is a lot of content. If you happen to be interested in the glass curtain wall, don’t forget to chat with the contact information on our homepage!