108 essential data that curtain wall novices must know

Views:17 Author:Site Editor Publish Time:2026-04-27 15:19:54 Orgin:Site

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A、 Key Material Performance Data (1-30)

1.Aluminum alloy profiles

Main force profile wall thickness ≥ 3.0mm

Non stress profile wall thickness ≥ 1.4mm

The thickness of the section opening is ≥ 2.5mm

The thickness of the closed part is ≥ 2.0mm

6063-T5 tensile strength ≥ 160MPa

6063-T6 tensile strength ≥ 205Mpa

2.Steel

Q235 tensile strength 375-500MPa

Q345 tensile strength 470-630MPa

Stainless steel bolt A2-70 with tensile strength ≥ 700MPa

High strength bolt grade 8.8 with tensile strength ≥ 800MPa

Hot dip galvanized film thickness on steel surface ≥ 85 μ m

Fluorocarbon spray film thickness ≥ 40 μ m

3.Glass

Single piece glass thickness ≥ 6mm

Hollow glass single piece thickness ≥ 5mm

Laminated glass PVB film thickness ≥ 0.76mm

Glass edge to bolt hole edge distance ≥ 2d (d is the aperture)

Maximum allowable area of glass (6mm tempered): within 3.0 ㎡

Maximum allowable area of glass (8mm tempered): within 4.0 ㎡

Glass deflection limit: short side/60

(This case is a negative example)

4.Sealing material

Silicone structural adhesive bonding thickness 6-12mm

Silicone structural adhesive bonding width ≥ 7mm

Silicone weather resistant adhesive with a minimum thickness of ≥ 3.5mm

Sealing seam width: 6-20mm

The diameter of polyethylene foam rod shall be 20-30% larger than the seam width

B、Design and calculate key data (31-60)

5.Wind load

Basic wind pressure is based on a 50 year return period

Gust coefficient β gz: 1.5-2.2

Wind load shape coefficient μ s: ± 1.5 (main area)

Wind pressure height variation coefficient μ z: 0.62-3.12

Wind load standard value wk=β gz μ s μ zw0

6.Earthquake action

Power amplification factor β E: 5.0

Maximum horizontal seismic impact coefficient: 0.08-0.90

The standard value for vertical seismic action is taken as 65% of the horizontal value

7.Temperature effect

Annual temperature change AT: 80 ° C

Temperature difference for calculating temperature stress of curtain wall: ± 40 ° C

Linear expansion coefficient of aluminum profile: 23x10-6%/° C

Steel linear expansion coefficient: 12x10-6%/° C

Glass linear expansion coefficient: 9x10-6%/° C

8.Deformation control

Deformation performance within the plane of the curtain wall: 1/100-1/300

Column deflection limit: L/180 (L is span)

Beam deflection limit: L/180

Glass deflection limit: a/60 (a is the short side)

C、Key Data Requirements for Construction (61-90)

9.Connection structure

The distance from the center to the edge of the bolt is ≥ 2d

The center distance of bolt holes is ≥ 3d

Self tapping screw connection plate thickness ≥ 1.0mm

Welding seam height ≥ 4mm

Anchor bar diameter of embedded parts ≥ 8mm

Rear anchor bolt buried depth ≥ 5d

10.Inter layer fire prevention

The height of interlayer fireproof sealing is ≥ 800mm

Fireproof rock wool density ≥ 100kg/m ³

Fireproof sealant has a fire resistance limit of ≥ 1h

Supporting plate thickness ≥ 1.5mm

(This case is a negative example)

11.Drainage structure

Drainage hole area ≥ 10m ㎡/piece

The spacing between drainage holes is ≤ 500mm

The spacing between condensate drainage holes is ≤ 1000mm

Minimum drainage slope: 3%

12.Gap control

Glass and groove fitting size:

Open fan gap: 3-5mm

Adhesive seam width tolerance: ± 1.5mm

D、Performance Requirements Key Data (91-108)

13.Air tightness performance

Partial classification: 0.5-4.5m3/(m.h)

)Fixed part classification: 0.01-0.05 m3/(m.h)

14.Water tightness performance

Grading range: 500-3500 Pa

Severe areas with a value ≥ 1000 Pa

Typhoon area value ≥ 2000 Pa

15.Wind pressure resistance performance

Grading range: 1.0-5.0kPa

Safety factor K1=2.0 (glass)

Safety factor K2=1.8 (profile)

Safety factor K3=2.15 (connection)

16.Thermal performance

Heat transfer coefficient K value: 1.0-5.0W/(m2. K)

Sunshade coefficient SC: 0.2-0.9

Visible light transmittance: 0.2-0.8

17.Sound insulation performance

Air sound insulation: 25-45dB

Requirements for traffic arteries: ≥ 30dB

18.Seismic performance

Inter story displacement angle of curtain wall:

E、 Key data for inspection and acceptance (summary of 108 items)

19.On site inspection

On site water pouring test: water volume 4L/(m2. min)

Duration: 5 minutes

Spray distance: 300-500mm

20.Material retesting

Sampling ratio of aluminum profiles: 1% and ≥ 5 pieces

Steel sampling ratio: 3% and ≥ 5 pieces

Structural adhesive bonding test:>0.6Mpa

Contamination of sealant: No pollution

21.Installation deviation

Verticality of curtain wall: ≤ 10mm when H ≤ 30m

Verticality of curtain wall: ≤ 15mm when H>30m

Horizontal degree of curtain wall: ≤ 3mm

Seam straightness: ≤ 2.5mm

Seam height difference: ≤ 1mm

Seam width deviation: ± 1mm

22.Construction of structural adhesive

Two component homogeneity: Butterfly test

Breaking time: 20-60 minutes

Maintenance environment: temperature 18-28 ° C

Relative humidity: 65-75%

Maintenance time: Single component ≥ 14 days

Maintenance time: two-component ≥ 7 days

23.Lightning protection structure

Equal pressure ring spacing: ≤ 12m

Connecting steel bar diameter: ≥ 12mm

Transition resistance: ≤ 0.20 Ω

24.Durability period

Structural adhesive weather resistance: ≥ 25 years

Corrosion resistance of metal coating:>15 years

Hardware service life: ≥ 20000 times

25.Safety factor

Glass safety factor: 2.0

Safety factor of structural adhesive: 4.0

Anchor safety factor: 3.0

26.Other key points

Glass edge treatment: precision grinding or chamfering

Minimum installation temperature: 5 ° C

Maximum installation humidity: 80%

Fastener anti loosening measures: must be set up

Heterogeneous metal contact: must be insulated

Detachable design requirement: easy to replace

Maintain channel settings: Each layer settings

Important note: The above data is compiled based on GB/T21086 "Building Curtain Walls" and related specifications. In actual engineering, adjustments and applications need to be made according to specific designs, local regulations, and the actual situation of the project. It is recommended that curtain wall practitioners must follow the latest version of specifications, standards, and design documents.