Need to improve the safety of metal grid panel walkways?

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If you’re in North America, South America or the Caribbean, your samples will be 8” x 10”. If you order more than one sample of the same product, you’ll receive one 8” x 10” sample, and then all additional samples will be 2 3/4" x 4 1/4".

If you’re in the UK, Europe or anywhere else, your samples will be A4 size. If you order more than one sample of the same product, you’ll receive one A4-sized sample, and then all additional samples will be 7.5 x 11cm.

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If you want to learn more, please visit our website Custom Gabion Baskets.

I realized recently this is specified differently among my colleagues.

There is no standard for the spanning direction of grating mats on platforms, walkways, etc. But for an elevated walkway or catwalk it is preferred in some client specs to have the bearing bars perpendicular to the walking direction, mainly to block the view through the grating to feel safer.

Technically the structural performance is slight different from my view. For grating spanning longitudinally (say Option A) needs transverse beams at say every say 5ft, while for grating spanning transversely (say Option B)will have no transverse beams but we still use some to provide lateral restraint to the support channels (stringers). When we have grating welded to the support beams the two options may give different capacities.

For non-removable grating we typically say "to be welded to support members with 2" long 3/16" fillet welds at eighth bearing bar maximum spacing". This means:

For Option A, grating is welded to the transverse beams, no connection between grating to the stringers

For Option B, grating is welded along the stringers. The actual welding will be from the banding bar (required in this case) to the stringers.

I think in this case Option B will not only look safer but be stronger as well.

What is your practice and opinion on this?


Thanks,
J1D
We used pre-painted black even on the exterior grating for years, no issues.

As per Fisher & Ludlow, the grating mats are supplied in 3'x24' standard size. The bearing bars are in the 24' direction. If we have a 3'x24' walkway Option A needs only one panel. The price is about $770/lot. To change bearing bars to be transverse (Option B) the standard size will be cut into 8 pieces and the banding will be much longer. The price is $200 more. But bear in mind this option can save some transverse beams, the difference is not that bad.

I like Option B for sure, but I don't know if it is always preferred or not, even other way around.