Best way to model floor grates

[Evil10]

I'm trying to model the floor grates shown in this image below

[URL]http://i.imgur.com/0t8lECG.png[/URL]

When I make them I can't make them spaced out evenly and end up making them all kinds of sizes, whats the best way to go about making something like this?

Thanks

[II_PYRO_II]

What program are you using?

[Deunan]

First of all, you generally want to make those using textures, rather than actual geometry.