The sketch below shows two buildings that need to be staked outwith a total station. Angles at all building corners are 90°. Two control points (TP1 and TP2), and two

known building corners (6and 2), are shown on the rough sketch and their coordinates (infeet) are listed in Table 1. 1. All points must be laid out from point TP1, with backsight to point TP2. The required horizontal precision is to be four decimals for angles and 0.01' for distances. Hint: First calculate the building coordinates.