Staking out a Building

First step is to locate the building by boundary surveying. Stakes are placed temporarily at the corners as a check.
A set of batter boards and reference stakes are first set. The boards are around the building corners and nailed at a full number of feet above the footing base or at first floor elevation.
Nails are driven into the batter board tops so that a string connecting them will define an outside wall
See fig 24-6, and the example which illustrates staking out the building in fig 24-7.
Radial methods, the one you used to lay out piles, is also used. Fig 24-8