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Table 2 Delay factors.

From: Assessment of Delay Factors for Structural Frameworks in Free-form Tall Buildings Using the FMEA

Consideration

Delay factor

A. Plane

A-F1

Increased rebar installation work

A-F2

Construction joint work increase

A-F3

Increased production and installation/disassembly of nonstandard formwork

A-F4

Increase in ACS installation/dismantling time

A-F5

Increase in production time of nonstandard formwork

A-F6

Increased worker transit time due to split L/C zoning

A-F7

Lack of a preparatory plan

A-F8

Lack of worker skills

A-F9

Lack of understanding by the field manager of the design drawings

B. Elevation

B-F1

T/C and L/C increase, additional material installation work

B-F2

Tilt adjustment operation when the ACS climbs

B-F3

Tilted reinforcement work

B-F4

Formwork work corresponding to the slope of the elevation

B-F5

Lack of worker skills

B-F6

Lack of understanding by the field manager of the design drawings

C. Floor height

C-F1

Additional formwork installation for vertical member construction

C-F2

Additional scaffold installation work when the ACS is applied

C-F3

Install additional form after ACS climbing

C-F4

Lack of a preparatory plan

C-F5

Lack of worker skills

D. Structural

D-F1

Reinforcement work with high difficulty

D-F2

Selection error of construction order of special structure and slab layer

D-F3

Additional temporary material installation work

D-F4

Additional joining operations for additional structures

D-F5

Lack of a preparatory plan

D-F6

Lack of worker skills

D-F7

Lack of understanding by the field manager of the design drawings