BCGBC4007A Plan building or construction work

Develop, track and revise project timeframes
Network systems or PERT charts
Activity - Preceding events
Complete both columns of the following table.
Task		Preceding event	Nodes
A	Make enquiries and order all materials required	Start	1
B	Wait for bricks, sand and cement to arrive	A	2
C	Clear vegetation from the site	A	2
D	Order concrete truck for delivery	A	2
E	Dig the trench	C	4
F	Pour the footings		
G	Foundation curing time		
H	Load the bricks next to the footings area
I	Mix the mortar and lay the bricks
J	Clean rubbish from the area
Finish	J	9

Here is the completed table with suggested answers.
Task		Preceding event	Nodes
A	Make enquiries and order all materials required	Start	1
B	Wait for bricks, sand and cement to arrive	A	2
C	Clear vegetation from the site	A	2
D	Order concrete truck for delivery	A	2
E	Dig the trench	C	4
F	Pour the footings	E	5
G	Foundation curing time	F	6
H	Load the bricks next to the footings area	B	3
I	Mix the mortar and lay the bricks	H	7
J	Clean rubbish from the area	I	8
Finish	J	9

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