Risk groups

High-impact causes

Synthesize the main causes of create risks factors.

Risks of natural and social factors

(R1)

r1.1;

r1.5;

r1.8;

r1.9

Volatility in raw material prices;

Policy changes;

The reason is that the construction site is unfavorable, overlapping with other works items;

Cause of the epidemic

Risks due to contracts

(R2)

r2.1;

r2.2;

r2.6

The reason is the implicit transaction to sign the contract (Collusion);

Risk due to uncertain and unclear contract terms;

Cause of contract dispute

Risks due to economy

(R3)

r3.2;

r3.3;

r3.4;

r3.5

The reason is that the investor is slow to pay the contractor;

The reason is the financial capacity of the contractor;

The reason is that the construction ground clearance compensation is very complicated;

The reason due to risks on inflation

Risks due to project management

(R4)

r4.1;

r4.3;

r4.6;

r4.9

The reason is that the construction project supervisor is not good;

The reason is poor coordination of the investor and general contractor;

The reason is not enough human resources to manage the project;

The reason is poor access to operation management technology

Risks due to design consulting work

(R5)

r5.2;

r5.5;

r5.6;

r5.7

Cause of the capacity of the design consultant;

The reason is that using the job code in the incorrect estimation;

The reason is that the calculation of the quantity of materials of the consultant is incorrect;

The reason is due to the field experiment

Risks due to the contractor’s construction capacity

(R6)

r6.1;

r6.2;

r6.3;

r6.5

The reason is the construction crew’s capacity;

The cause was investment in purchasing unsynchronous and poor quality equipment;

The reason is the weak technical capacity of the general contractor;

The reason is not enough technical manpower

Risks due to administrative and legal procedures

(R7)

r7.4;

r7.5;

r7.6;

r7.7

The reason is complicated administrative procedures;

The reason is the adjustment of the project’s scale of the investor;

Causes of labor safety;

The cause is due to changes in laws, regulations, standards