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- Saddle clip: top plate + hold-down + M8 bolt
- Type M and L clips for different flanges
- Weld fixing details
- Galvanised or stainless
- Min. 4 clip sets per panel
Three ways to fix grating
- Welding – for floors that will never be removed, such as flooring around machines. Fillet weld at the first bearing bar of every corner, at least 20 mm long and 3 mm high; touch up the zinc after welding.
- Saddle clips – a top plate, a hold-down that hooks under the beam flange and an M8 bolt. Quick to install, removable and no damage to the galvanising; suitable for all gratings.
- Drilled fixing – a hole in the flange with clip plate, bolt and nut, where a hook-type clip cannot be used.
Rules for installation
- Use at least four sets of saddle clips per panel – more on long spans, vibrating floors and heavy-duty panels.
- Leave about 10 mm between panels and at walls; 15 mm or 5 mm edge gaps per detail.
- Bearing bars always span between supports; check direction before fixing.
- Use galvanised clips with galvanised grating and stainless clips with stainless grating.
Tiêu chuẩn và yêu cầu theo thị trường
Các quy chuẩn mà World Steel áp dụng để thiết kế, gia công và lập hồ sơ cho sản phẩm này – cùng các yêu cầu chính về hình học và tải trọng tại từng thị trường.
Hoa Kỳ
- ANSI/NAAMM MBG 531Metal Bar Grating Manual
- ASCE 7Minimum design loads (Table 4.3-1 floor live loads)
- OSHA 29 CFR 1910 Subpart DWalking-working surfaces
- AWS D1.1Structural welding code – steel
- ASTM A123Zinc (hot-dip galvanized) coatings on iron and steel products
- CSI 05 53 00Metal gratings (MasterFormat section)
- Light manufacturing / light storage live load
- 125 psf (ASCE 7 Table 4.3-1)
- Heavy manufacturing / heavy storage live load
- 250 psf (ASCE 7 Table 4.3-1)
- Toeboard at open edges
- ≥ 3.5 in (90 mm) high (OSHA 1910.29(k))
Úc / NZ
- AS 1657-2018Fixed platforms, walkways, stairways and ladders
- AS/NZS 1170.1Structural design actions – imposed actions
- AS 4100Steel structures
- AS/NZS 1554.1Structural steel welding
- AS/NZS 4680Hot-dip galvanized coatings on fabricated ferrous articles
- AS 4586Slip resistance classification of pedestrian surfaces
- Walkway clear width
- ≥ 600 mm (AS 1657)
- Toeboard
- ≥ 100 mm where required (AS 1657)
Châu Âu
- DIN 24537-1Gratings as floor covering – steel gratings
- RAL-GZ 638Gratings – quality assurance
- EN ISO 14122-2Working platforms and walkways
- EN 1991-1-1Imposed loads on buildings
- EN ISO 1461Hot-dip galvanized coatings on fabricated articles
- Walkway clear width
- ≥ 600 mm, preferably 800 mm (EN ISO 14122-2)
- Toe-plate
- ≥ 100 mm high (EN ISO 14122-3)
Nội dung chỉ mang tính tham khảo – chỉ dẫn kỹ thuật của dự án, phiên bản quy chuẩn được áp dụng và cơ quan có thẩm quyền là căn cứ quyết định.
Hoàn thiện bề mặt
| Hoàn thiện bề mặt | Tiêu chuẩn / ghi chú |
|---|---|
| Hot-dip galvanised (G) | ASTM A123 · AS/NZS 4680 · EN ISO 1461 |
| Stainless | A2 / A4 for stainless grating |
Câu hỏi thường gặp
How many clips does a panel need?
At least four sets per panel, more for long spans, vibration or heavy loads.
Clips or welding?
Clips are removable and protect the zinc coating; welding is for permanent floors that will never be lifted.
AS/NZS 5131 CC3
EN 1090 EXC3 · CE