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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.
市場別の規格と要求事項
World Steelが本製品の設計・製作・書類作成に適用する基準――および各市場における主な寸法・荷重要件。
米国
- 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))
豪州 / 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)
欧州
- 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)
参考用の概要です――プロジェクト仕様書、採用される基準の版、所轄官庁の判断が優先されます。
表面処理
| 表面処理 | 規格 / 備考 |
|---|---|
| Hot-dip galvanised (G) | ASTM A123 · AS/NZS 4680 · EN ISO 1461 |
| Stainless | A2 / A4 for stainless grating |
よくある質問
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