RAF landing track plates

[philippe1]

hello,
i am looking for info and pictures of the following matter
when the USAAF used grassfields as a landing strip to used metal plates to put on the soil for ameliorize the landing and take off of planes
they called them PPS plates those where more or less 40CM wide on several meters long and had ranges of 3 holes in the plates and could be attached one to another

now my question is about the RAF landing fields so grassland or nonconcrete strips
the Birtish Forces used also a sort of plates but where looking different from those PPS it was more like a rooster looking
does any of our readers have clear pictures about those plates and info
did they had a special name,
thanks in advance
phil