The COMMON ARRANGEMENT OF WORK SECTIONS (CAWS)

A	Preliminaries/General conditions	Structural Engineering (10)
B	Complete buildings
C	Demolition/Alteration/Renovation
D	Groundwork
E	In situ concrete/Large precast concrete
F	Masonry
G	Structural/Carcassing metal/timber
H	Cladding/Covering
J	Waterproofing
K	Linings/Sheathings/Dry partitioning
L	Windows/Doors/Stairs
M	Surface finishes
N	Furniture/Equipment
P	Building fabric sundries
Q	Paving/Planting/Fencing/Site furniture
R	Disposal systems (R10’s - R30’s) (R10’s - R30’s)	Structural Engineering & Mechanical Engineering
S	Piped supply systems	Mechanical Engineering (50)
T	Mechanical heating/cooling/refrigeration systems
U	Ventilation/Air conditioning systems
V	Electrical supply/power/lighting systems	Electrical Engineering (60)
W	Communications/Security/Control systems
X	Transport systems
Y	Services reference specification (Y10’s - Y50’s) (Y60’s - Y90’s)	Mechanical Engineering & Electrical Engineering
Z	Building fabric reference specification	Structural Engineering

HOW THE CAWS & CI/SfB CODES ARE USED IN THIS SYSTEM