Where in CS:1 the concrete sampling rate for fresh concrete?

Building (Construction) Regulation
Regulation 58

TABLE 7
SAMPLING RATES
Type or part of building, building works or street Quantity of concrete to be represented by each sample:
a. Masts, cantilevers more than 3 m in length, columns, shear walls, prestressed and other critical elements 10 m3 or 10 batches whichever is the smaller volumn

b. Solid rafts, pile caps, caisson caps and mass concrete retaining walls 100 m3 or 100 batches whichever is the smaller volumn

c. All other types or parts 25 m3 or 25 batches whichever is the smaller volumn