The phrase "piled in layers" is grammatically correct and can be used in written English.
It is usually used to describe objects or substances that have been stacked or arranged in a way that creates multiple layers. Example: The delicious cake was decorated with frosting and sliced strawberries, making it look like a work of art piled in layers.
PARIS — Sing, muse, of crinolines piled in layers, of blunt-cut bobs and Cupid's bow lips?
An hour and a half later, when the scene was finally under control, bodies had piled in layers up to seven deep and included some of the security guards trying to control the crowd.
Sal Restivo writes that Shen used summation of higher series to ascertain the number of kegs which could be piled in layers in a space shaped like the frustum of a rectangular pyramid.
If grass clippings are composted, be sure to layer the pile with accumulations of leaves, garden rakings or soil, since too much green waste piled in compost will not decompose.
Superficial lateral and medial fibers in the proximal aspect of the thigh were piled in deeper inner layers at the level of the quadriceps tendon (Fig. 1).
Superficial lateral and medial fibers in the proximal aspect of the thigh are piled in deeper inner layers at the level of the quadriceps tendon.
Hundreds of millions of years ago, before the Andes existed, rocks had slowly piled up in layers.
The overall impression of the house was of unrelenting solidity, with white, blue and red granite piled up in layers like toy blocks.
The amounts I have given are the smallest quantities in which it is worth cooking such a stew, and will serve four or five but of course they can be doubled or even trebled for a large party; if the meat is piled up in layers in a deep pan it will naturally need longer than if it is spread out in a shallow one.
They piled layers and layers of debt — "leverage," in Wall Street parlance — onto these companies just before the economy came screeching to a halt.
It is easiest to build the piles in layers, watering as you go, tamping down and building the next layer.
