Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers

  1. *๊ฒฝ์ƒ๋Œ€ํ•™๊ต ํ† ๋ชฉ๊ณตํ•™๊ณผ ๋ฐ•์‚ฌ๊ณผ์ • ()
  2. **ํ•œ๊ตญ๊ฑด์„ค๊ธฐ์ˆ ์—ฐ๊ตฌ์› SOC์„ฑ๋Šฅ์—ฐ๊ตฌ์†Œ ICT์œตํ•ฉ์—ฐ๊ตฌ์‹ค ์ˆ˜์„์—ฐ๊ตฌ์› ๊ณตํ•™๋ฐ•์‚ฌ ()
  3. ***๊ฒฝ์ƒ๋Œ€ํ•™๊ต ํ† ๋ชฉ๊ณตํ•™๊ณผ ๊ต์ˆ˜ ๊ณตํ•™์—ฐ๊ตฌ์› (***Gyeongsang National University)


BIM, 4D CAD, ๊ท ํ˜•์„ฑ๊ณผํ‰๊ฐ€์ œ๋„, ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ
Building information Modeling(BIM), 4D CAD, Balanced score card(BSC), KPI

  • 1. ์„œ ๋ก 

  •   1.1 ์—ฐ๊ตฌ์˜ ๋ฐฐ๊ฒฝ ๋ฐ ๋ชฉ์ 

  •   1.2 ์—ฐ๊ตฌ ๋ฒ”์œ„ ๋ฐ ๋ฐฉ๋ฒ•

  •   1.3 ๊ตญ๋‚ด์™ธ ์—ฐ๊ตฌ๋™ํ–ฅ

  • 2. 4D CAD ์‹œ์Šคํ…œ์˜ ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ

  •   2.1 ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ BSC ๊ฐœ์š”

  •   2.2 ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ ๊ธฐ์ดˆ ์ž๋ฃŒ์ˆ˜์ง‘

  •   2.3 BSC๊ธฐ๋ฐ˜ ์„ฑ๊ณผ์ง€ํ‘œ ์„ ์ •

  • 3. ์„ค๋ฌธ์กฐ์‚ฌ๋ฅผ ํ†ตํ•œ 4D CAD ๋„์ž… ํ™œ์šฉ์„ฑ ํ‰๊ฐ€ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ๊ฐ€์ค‘์น˜ ์„ ์ •

  •   3.1 ์„ค๋ฌธ์กฐ์‚ฌ ๊ฐœ์š”

  •   3.2 ์„ค๋ฌธ์กฐ์‚ฌ ๋ถ„์„๊ฒฐ๊ณผ

  • 4. 4D ์‹œ์Šคํ…œ์˜ ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜• ๊ตฌ์„ฑ ๋ฐ ์‹œ๋‚˜๋ฆฌ์˜ค๊ธฐ๋ฐ˜ ์‚ฌ๋ก€์ ์šฉ

  •   4.1 ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜•

  •   4.2 ์‹œ๋‚˜๋ฆฌ์˜ค๊ธฐ๋ฐ˜ ์‚ฌ๋ก€์ ์šฉ

  • 5. ๊ฒฐ ๋ก 

1. ์„œ ๋ก 

1.1 ์—ฐ๊ตฌ์˜ ๋ฐฐ๊ฒฝ ๋ฐ ๋ชฉ์ 

๊ฑด์„คํ”„๋กœ์ ํŠธ๋Š” ๊ธฐํš๋ถ€ํ„ฐ ์œ ์ง€๊ด€๋ฆฌ๋‹จ๊ณ„๊นŒ์ง€ ์—ฐ์†์ ์ธ ๋ผ์ดํ”„์‚ฌ์ดํด ๋‹จ๊ณ„๋กœ ๊ตฌ์„ฑ๋˜๊ณ , ๊ฐ ๋‹จ๊ณ„๋ณ„ ๋‹ค์–‘ํ•œ ์ฐธ์—ฌ์ฃผ์ฒด๊ฐ€ ์กด์žฌํ•œ๋‹ค. ๋”ฐ๋ผ์„œ ๊ฑด์„คํ”„๋กœ์ ํŠธ๊ฐ€ ์ ์  ๋Œ€ํ˜•ํ™” ๋ฐ ๋ณต์žกํ™” ๋ ์ˆ˜๋ก ์ฐธ์—ฌ์ฃผ์ฒด๊ฐ„์˜ ํ˜‘์—…๊ณผ ์ด๋“ค ๊ฐ„์— ๋ฐœ์ƒ๋˜๋Š” ๋ฐฉ๋Œ€ํ•œ ์ •๋ณด์˜ ํšจ์œจ์ ์ธ ๊ด€๋ฆฌ ๋ฐฉ์•ˆ์— ๊ด€์‹ฌ์ด ๋†’์•„์ง€๊ธฐ ๋งˆ๋ จ์ด๋‹ค. ์ด๋Ÿฌํ•œ ๊ฑด์„ค ํ™˜๊ฒฝ์— ๋งž์ถคํ˜• ๋Œ€์‘๋ฐฉ์•ˆ์œผ๋กœ ์ตœ๊ทผ BIM(Building Information Modeling)์ด ๋Œ€๋‘๋˜๊ณ  ์žˆ๋‹ค.

BIM์€ ๊ฑด์„ค ํ”„๋กœ์„ธ์Šค ๋‹จ๊ณ„๋ณ„ ์—…๋ฌด๋ฅผ ์ˆ˜ํ–‰ํ•˜๋ฉด์„œ ๋ฐœ์ƒ๋˜๋Š” ์ •๋ณด, ์กฐ์ง, ์—…๋ฌด ๋“ฑ์˜ ๋ฐ์ดํ„ฐ๋ฅผ 3D ๊ธฐ๋ฐ˜ ๊ฐ์ฒด์ •๋ณด๋ฅผ ์ค‘์‹ฌ์œผ๋กœ ํ†ตํ•ฉ๊ด€๋ฆฌ๊ฐ€ ๊ฐ€๋Šฅํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์ •๋ณด์ „๋‹ฌ์˜ ํšจ์œจ์„ฑ์„ ํ–ฅ์ƒ์‹œํ‚ฌ ์ˆ˜ ์žˆ๋‹ค. ํŠนํžˆ BIM์€ ์กฐ๋‹ฌ์ฒญ์—์„œ ๋ฐœํ‘œํ•œ๋ฐ”์™€ ๊ฐ™์ด 2012๋…„๋ถ€ํ„ฐ 500์–ต ์ด์ƒ์˜ ๊ณต๊ณต ํ„ดํ‚ค๊ณต์‚ฌ์— ๋Œ€ํ•ด์„œ BIM ์ ์šฉ์ด ์˜๋ฌดํ™”๋˜๋Š” ๋“ฑ์˜ ์ •์ฑ…์ ์ธ ๋ฐ˜์˜์„ ํ†ตํ•ด ๊ตญ๋‚ด์˜ BIM๊ธฐ์ˆ  ์ ์šฉ์ด ํ™•๋Œ€๋˜๋Š” ์ถ”์„ธ์ด๋ฉฐ, ์ด์— ๋”ฐ๋ผ ํšจ์œจ์ ์ธ BIM์˜ ๋„์ž…๊ณผ ์šด์šฉ์€ ๊ฑด์„ค์‚ฌ๋“ค์˜ ์ค‘์š”ํ•œ ๊ด€์‹ฌ๋ถ„์•ผ๊ฐ€ ๋˜๊ณ  ์žˆ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๋Œ€๋‹ค์ˆ˜์˜ ๊ฑด์„ค์‚ฌ๋“ค์€ BIM ๋„์ž…์˜ ํ•„์š”์„ฑ๊ณผ ์ค‘์š”์„ฑ์„ ์ธ์ง€ํ•˜๋ฉด์„œ๋„ ์ด๋ฅผ ์‹ค์ œ ํ˜„์žฅ์— ๋„์ž…ํ•˜์—ฌ ์šด์šฉํ•œ ์‚ฌ๋ก€๋Š” ์ €์กฐํ•œ ์‹ค์ •์ด๋‹ค. ์ด๋Š” ์•„์ง๊นŒ์ง€ BIM ๋„์ž…๊ณผ ์šด์šฉ์— ๋Œ€ํ•œ ํ‘œ์ค€ ๊ฐ€์ด๋“œ๋ผ์ธ, ๋‹ค์–‘ํ•œ ๊ฑด์„ค ํ™˜๊ฒฝ์— ๋ฐ˜์˜๋œ BIM์˜ ์ •๋Ÿ‰์ ์ธ ํšจ๊ณผ ๋“ฑ์˜ ์‹ค์ฆ ๋ฐ์ดํ„ฐ๊ฐ€ ๋ถ€์กฑํ•จ์œผ๋กœ์„œ, ๊ฑด์„ค์‚ฌ๋“ค์ด BIM ํˆฌ์ž ํšจ๊ณผ์— ๋Œ€ํ•œ ํ™•์‹ ์„ ๊ฐ€์ง€์ง€ ๋ชปํ•˜๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค.

๋”ฐ๋ผ์„œ ๊ฑด์„ค์‚ฌ๊ฐ€ BIM ๋„์ž…๊ณผ ์šด์šฉ์— ์žˆ์–ด์„œ BIM ๊ธฐ์ˆ ์„ ์–ผ๋งˆ๋‚˜ ํ™œ์šฉํ•  ์ˆ˜ ์žˆ๋Š”์ง€์™€ ์ด๋ฅผ ํšจ์œจ์ ์œผ๋กœ ํ™œ์šฉํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ๋ฌด์—‡์„ ์ค€๋น„ํ•ด์•ผํ•˜๋Š”์ง€๋ฅผ ํŒ๋‹จํ•  ์ˆ˜ ์žˆ๋Š” ๊ธฐ์ค€์ด ์ œ์‹œ๋  ํ•„์š”๊ฐ€ ์žˆ๋‹ค.

์ด์— ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๊ฑด์„ค์‚ฌ๋“ค์ด ์ง์ ‘์ ์œผ๋กœ BIM ๋„์ž…๊ณผ ์šด์šฉ์— ๋”ฐ๋ฅธ ํ™œ์šฉ์ •๋„๋ฅผ ์ •๋Ÿ‰์ ์ธ ์ˆ˜์น˜๋กœ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋Š” ๋ฐฉ์•ˆ์„ ์ œ์‹œํ•˜๊ณ ์ž ํ•œ๋‹ค. ์ด๋ฅผ ์œ„ํ•ด BSC(Balanced Score Card) ์„ฑ๊ณผ๋ถ„์„ ๋ฐฉ๋ฒ•๋ก ์„ ํ™œ์šฉํ•˜์—ฌ ํ‰๊ฐ€์ง€ํ‘œ์™€ ํ‰๊ฐ€๋ชจํ˜•์„ ๊ตฌ์ถ•ํ•œ๋‹ค.

1.2 ์—ฐ๊ตฌ ๋ฒ”์œ„ ๋ฐ ๋ฐฉ๋ฒ•

๋ณธ ์—ฐ๊ตฌ๋Š” BIM ๋„์ž…๊ณผ ์šด์šฉ์— ๋”ฐ๋ฅธ ํ™œ์šฉ์ •๋„๋ฅผ ์ •๋Ÿ‰์ ์ธ ์ˆ˜์น˜๋กœ ํ‰๊ฐ€ํ•˜์—ฌ BIM ๋„์ž…์— ๋Œ€ํ•œ ์˜์‚ฌ๊ฒฐ์ •์— ๋„์›€์„ ์ฃผ๊ณ ์žํ•˜๋Š” ์—ฐ๊ตฌ์ด๋‹ค. ์ด๋ฅผ ์œ„ํ•˜์—ฌ ํ† ๋ชฉ๋ถ„์•ผ BIM ๊ธฐ์ˆ  ์ค‘ ์‹ค๋ฌด ํ™œ์šฉ์„ฑ์ด ๋†’์€ 4D CAD๋ฅผ ์—ฐ๊ตฌ ๋ฒ”์œ„๋กœ ํ•œ์ •ํ•˜๊ณ , ์ด๋ฅผ BSC(Balanced Score Card) ์„ฑ๊ณผ๋ถ„์„ ๋ฐฉ๋ฒ•๋ก ์„ ํ™œ์šฉํ•˜์—ฌ ํ‰๊ฐ€ ์ง€ํ‘œ์™€ ํ‰๊ฐ€ ๋ชจํ˜•์„ ๊ฐœ๋ฐœํ•œ๋‹ค. ์—ฐ๊ตฌ ์ˆ˜ํ–‰ ๋ฐฉ๋ฒ•์€ ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค.

์ฒซ์งธ, ๋ฌธํ—Œ๊ณ ์ฐฐ์„ ํ†ตํ•˜์—ฌ ๊ฑด์„ค๏ฝฅIT ๋ถ„์•ผ์˜ ์„ฑ๊ณผ๊ด€๋ฆฌ ํ˜„ํ™ฉ๊ณผ ์„ฑ๊ณผ์ง€ํ‘œ ์„ ์ •์— ๊ด€ํ•œ ์‚ฌ๋ก€๋ฅผ ์ˆ˜์ง‘ํ•œ๋‹ค.

๋‘˜์งธ, ๊ฑด์„ค BSC์˜ ๊ธฐ์ดˆ์ž๋ฃŒ ๋ฐ 4D CAD ๊ธฐ๋Šฅ์„ ๋ถ„์„ํ•˜์—ฌ 4D CAD ํ™œ์šฉ์„ฑ ์ธก์ •์„ ์œ„ํ•œ ์ง€ํ‘œ๋ฅผ ๊ฐœ๋ฐœํ•˜๊ณ , AHP ๋ถ„์„ ๊ธฐ๋ฒ•์„ ํ†ตํ•ด ์„ฑ๊ณผ์ง€ํ‘œ๋“ค ๊ฐ„์˜ ๊ฐ€์ค‘์น˜๋ฅผ ์‚ฐ์ •ํ•œ๋‹ค.

์…‹์งธ, 4D CAD ํ™œ์šฉ๋„๋ฅผ ์ •๋Ÿ‰์ ์œผ๋กœ ๋ถ„์„ํ•  ์ˆ˜ ์žˆ๋Š” ํ‰๊ฐ€ ๋ชจํ˜•์„ ์ œ์•ˆํ•˜๊ณ , ์ด๋ฅผ ์‹œ๋‚˜๋ฆฌ์˜ค ์ž‘์„ฑ์— ์˜ํ•œ ์‚ฌ๋ก€์— ์ ์šฉํ•œ๋‹ค.

1.3 ๊ตญ๋‚ด์™ธ ์—ฐ๊ตฌ๋™ํ–ฅ

๊ตญ๋‚ด๏ฝฅ์™ธ ๊ฑด์„ค๋ถ„์•ผ์˜ ์„ฑ๊ณผ๊ด€๋ฆฌ์— ๊ด€ํ•œ ์—ฐ๊ตฌ๋“ค์€ Table 1๊ณผ ๊ฐ™์ด ๊ฑด์„คํ”„๋กœ์ ํŠธ ์„ฑ๊ณผ๊ด€๋ฆฌ์™€ BIM ๋ฐ ๊ฑด์„ค IT๊ด€๋ จ ์„ฑ๊ณผ๊ด€๋ฆฌ๋กœ ๊ตฌ๋ถ„ํ•  ์ˆ˜ ์žˆ๋‹ค. 

๊ฑด์„คํ”„๋กœ์ ํŠธ์˜ ์„ฑ๊ณผ๊ด€๋ฆฌ ์—ฐ๊ตฌ๋Š” ์ฃผ๋กœ ํ’ˆ์งˆ, ์•ˆ์ „, ์กฐ์ง ๋“ฑ์˜ ๋‹ค์–‘ํ•œ ๊ฑด์„ค ์—…๋ฌด๋“ค์˜ ํšจ์œจ์ ์ธ ์šด์˜์„ ์œ„ํ•œ ์„ฑ๊ณผ์ง€ํ‘œ ๋ฐ ํ‰๊ฐ€ ํ”„๋ ˆ์ž„์›Œํฌ๋ฅผ ๊ฐœ๋ฐœํ•˜๋Š” ์—ฐ๊ตฌ๋“ค๋กœ ์ˆ˜ํ–‰๋˜๊ณ  ์žˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  BIM ๋ฐ ๊ฑด์„ค IT๊ด€๋ จ ์„ฑ๊ณผ๊ด€๋ฆฌ๋Š” BIM ๋ฐ IT ๊ธฐ์ˆ ๋“ค์˜ ๊ฐœ๋…์ ์ธ ์šด์˜ ๋ฐฉ์•ˆ๊ณผ ๋ณด์™„์‚ฌํ•ญ ๋“ฑ์„ ์ œ์‹œํ•˜๊ฑฐ๋‚˜, ํฌ๊ด„์ ์ธ BIM ๊ธฐ์ˆ ์„ ๋Œ€์ƒ์œผ๋กœ ํ™œ์šฉ๋„ ๋ฐ ๋งŒ์กฑ๋„๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” ์„ฑ๊ณผ์ง€ํ‘œ ๋ฐ ํ‰๊ฐ€ ํ”„๋ ˆ์ž„์›Œํฌ ๊ฐœ๋ฐœ ์—ฐ๊ตฌ๋“ค๋กœ ์ˆ˜ํ–‰๋˜๊ณ  ์žˆ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ์ด์™€ ๊ฐ™์ด ๊ฑด์„ค๋ถ„์•ผ์˜ ์„ฑ๊ณผ๊ด€๋ฆฌ ์—ฐ๊ตฌ๋“ค์€ ๋Œ€๋ถ€๋ถ„ ์ฃผ์š” ์—…๋ฌด๋‚˜, BIM ๋ฐ IT ๊ธฐ์ˆ ์˜ ๋„์ž…์— ๋Œ€ํ•œ ์ „๋ฐ˜์ ์ธ ์„ฑ๊ณผ๋ฅผ ๋ถ„์„ํ•˜๊ณ  ์žˆ์„ ๋ฟ 4D CAD์™€ ๊ฐ™์ด ์„ธ๋ถ€์ ์ธ ๊ธฐ์ˆ ์— ๋Œ€ํ•œ ํˆฌ์žํšจ๊ณผ์™€ ์šด์˜์ƒ ์ทจ์•ฝ์ ์„ ํŒŒ์•…ํ•  ์ˆ˜ ์žˆ๋Š” ์„ฑ๊ณผ๊ด€๋ฆฌ๋Š” ๋ฏธํกํ•œ ์‹ค์ •์ด๋‹ค.

Table 1. Research Review in Korea and Abroad

Type

Author

Description

Work in constru-ction project

Kim(2005)

Development of indexes for measuring performance of main work in construction   management and suggestion of details to   check them

Song(2006)

Development of objective indexes for measuring performance in quality management and suggestion of quality performance process by PDCA cycle

Oh(2006)

Suggestion of practical CSF and KPI by considering characteristics of domestic   construction industry

Son(2007)

Development of critical success factors in design phase on plant projects

Mohamed(2003)

Suggestion of BSC approach to benchmarking organizational safety culture in Construction projects

Gongbo Lin(2007)

Suggestion of critical review for measuring the performance of value engineering studies in Construction.

Perfor-mance measur-ement of BIM and constru-ction IT

Leem(2006)

Development of a KPI-based IT evaluation methodology and its application

Lee(2009)

Development of the BIM software selection factors by analyzing main  function and limitation of BIM

Song(2011)

Suggestion of critical factors and weak points by investigating the current status and satisfaction degree of based BIM construction projects

Lim(2011)

Suggestion of valuation basis of successful cases by developing success factors and its weight in construction IT convergence

Chung(2012)

Analysis of core ability of BIM manager in general contractor for systematic BIM operation

Dawood(2009)

Suggestion of key performance indicators for measuring 4D CAD system in construction projects

๋”ฐ๋ผ์„œ ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” BIM์˜ ์„ธ๋ถ€๊ธฐ์ˆ ์ธ 4D CAD์˜ ๋„์ž…๊ณผ ์šด์šฉ์— ๋”ฐ๋ฅธ ํ™œ์šฉ์ •๋„๋ฅผ ์ •๋Ÿ‰์ ์ธ ์ˆ˜์น˜๋กœ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋Š” ๋ฐฉ์•ˆ์„ ์ œ์‹œํ•˜๊ณ ์ž ํ•œ๋‹ค.

Table 2. 4D CAD Functions by Phase

Phase

Function

Planning phase

Alternative review simulation, summary schedule simulation, arrangement/landscape planning simulation, site plane simulation

Basic design phase

Shape information 3D model, visual review of underground utilities, arrangement/landscape planning simulation, site plane simulation

Design phase

Detailed design 3D modeling, visual review of the cross section information, constructability analysis

Construction phase

4D schedule simulation, progress management simulation, visual analysis of schedule management, constructability analysis simulation, risk management, cost and resources management, wide area and long-distance management, VR functions etc.

2. 4D CAD ์‹œ์Šคํ…œ์˜ ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ

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Fig. 1. Process of Developing Indexes

2.1 ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ BSC ๊ฐœ์š” 

BIM ์ ์šฉ์— ๋”ฐ๋ฅธ ํ”„๋กœ์ ํŠธ์˜ ํšจ๊ณผ๋Š” ๊ธฐ์กด์˜ ์žฌ๋ฌด์  ์ง€ํ‘œ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ํ’ˆ์งˆํ–ฅ์ƒ, ์ž‘์—…ํ™˜๊ฒฝ ๊ฐœ์„  ๋“ฑ์˜ ์ •๋Ÿ‰ํ™”๊ฐ€ ํž˜๋“  ๋ฌดํ˜•์  ํšจ๊ณผ๋ฅผ ์ˆ˜๋ฐ˜ํ•˜๊ณ  ์žˆ๊ธฐ ๋•Œ๋ฌธ์— ์œ ๏ฝฅ๋ฌดํ˜•์  ํšจ๊ณผ๊ฐ€ ๋ชจ๋‘ ๊ณ ๋ ค๋˜์–ด์•ผ ํ•œ๋‹ค(์†ก๋ฏธ๋ฆผ, 2011). ๋”ฐ๋ผ์„œ 4D CAD ๋„์ž…๊ณผ ์šด์šฉ์„ ์œ„ํ•œ ํ™œ์šฉ์„ฑ ํ‰๊ฐ€๋„ ์œ ๏ฝฅ๋ฌดํ˜•์  ํšจ๊ณผ๋ฅผ ํฌํ•จํ•ด์•ผํ•˜๋ฉฐ, ์ด๋ฅผ ์œ„ํ•ด BSC๋ฅผ ์ ์šฉํ•œ๋‹ค.

BSC๋Š” ๊ธฐ์—…์˜ ์„ฑ๊ณผ๋ฅผ ๋‹จ์ˆœํ•œ ์žฌ๋ฌด ์ง€ํ‘œ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ๊ณ ๊ฐ, ๋‚ด๋ถ€ ํ”„๋กœ์„ธ์Šค, ํ•™์Šต ๋ฐ ๊ต์œก์˜ 4๊ฐ€์ง€ ๊ด€์ ์œผ๋กœ ๊ตฌ๋ถ„ํ•˜์—ฌ, ์œ ๏ฝฅ๋ฌดํ˜•์ ์ธ ํšจ๊ณผ๋“ค์„ ๊ท ํ˜•์ ์œผ๋กœ ๊ด€๋ฆฌํ•  ์ˆ˜ ์žˆ๊ธฐ ๋•Œ๋ฌธ์— 4D CAD์˜ ์„ฑ๊ณผ๋ฅผ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•œ ์ ์ ˆํ•œ ๊ธฐ๋ฒ•์ด ๋  ์ˆ˜ ์žˆ๋‹ค.

BSC๊ธฐ๋ฐ˜์œผ๋กœ 4D CAD ์‹œ์Šคํ…œ์˜ ํ™œ์šฉ์„ฑ ํ‰๊ฐ€๋ฅผ ์œ„ํ•œ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ๊ฐœ๋ฐœ ์ ˆ์ฐจ๋Š” Fig.1๊ณผ ๊ฐ™๋‹ค.

๋จผ์ €, ์ž๋ฃŒ ์ˆ˜์ง‘์„ ํ†ตํ•ด 4D CAD ์‹œ์Šคํ…œ์˜ ํ™œ์šฉ ๊ธฐ๋Šฅ๊ณผ ์„ฑ๊ณผ์ง€ํ‘œํ•ญ๋ชฉ์„ ๋ถ„์„ํ•˜๊ณ , 1์ฐจ์ ์œผ๋กœ ์ค‘์ ๋ชฉํ‘œ, ๊ด€์ ๋ณ„ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ ๋ฐ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋ฅผ ์ž‘์„ฑํ•œ๋‹ค. ์ „๋ฌธ๊ฐ€์˜ ์˜๊ฒฌ ์ˆ˜๋ ด์„ ํ†ตํ•ด ํ˜‘์˜๋œ ์‚ฌํ•ญ์œผ๋กœ 2์ฐจ ํ‰๊ฐ€ํ•ญ๋ชฉ์„ ๊ตฌ์„ฑํ•˜๊ณ  ์ด๋ฅผ ์‹ค๋ฌด ๊ฒฝ๋ ฅ์ด 10๋…„ ์ด์ƒ์ธ ์‹œ๊ณต์ž, ์„ค๊ณ„์ž, ๊ฐ๋ฆฌ์ž, ๋ฐœ์ฃผ์ž๋“ค์˜ ์„ค๋ฌธ์„ ํ†ตํ•ด ์ ํ•ฉ์„ฑ์„ ๊ฒ€์ฆํ•จ์œผ๋กœ์จ ์ตœ์ข…์ ์ธ ์„ฑ๊ณผ์ง€ํ‘œ๋ฅผ ๋„์ถœํ•œ๋‹ค.

๊ทธ๋ฆฌ๊ณ  ๋„์ถœ๋œ ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ 4D CAD ๋„์ž…๊ณผ ์šด์šฉ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์ •๋„๋ฅผ ๋ถ„์„ํ•˜๊ธฐ ์œ„ํ•ด ์„ค๋ฌธ์ง€๋ฅผ ๋ฐฐํฌํ•˜์—ฌ ๊ฑด์„ค ์‹ค๋ฌด์ž๋“ค๋กœ๋ถ€ํ„ฐ ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ ๊ฐ€์ค‘์น˜๋ฅผ ์‚ฐ์ •ํ•œ๋‹ค.

2.2 ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ ๊ธฐ์ดˆ ์ž๋ฃŒ์ˆ˜์ง‘

4D CAD๋Š” 3์ฐจ์› ์ž…์ฒด ๋„๋ฉด๊ณผ ์‹œ๊ฐ„์ •๋ณด๋ฅผ ๊ฐ–๋Š” ๊ณต์ •ํ‘œ์™€์˜ ์—ฐ๊ณ„๋ฅผ ํ†ตํ•ด ๊ณต์‚ฌ ๊ฒฝ๊ณผ ์‹œ๊ฐ„์— ๋”ฐ๋ฅธ ์‹œ์„ค๋ฌผ์˜ ์™„์„ฑ์ƒํƒœ๋ฅผ VR(Virtual Reality) ๊ธฐ์ˆ ๋กœ ๋‚˜ํƒ€๋‚ผ ์ˆ˜ ์žˆ๋‹ค.

์ดˆ๊ธฐ 4D CAD๋Š” ์‹œ๊ณต ํ”„๋กœ์ ํŠธ ๊ณ„ํš์˜ ์ดํ•ด๋„๋ฅผ ์ง€์›ํ•˜๊ธฐ ์œ„ํ•œ ์‹œ๊ฐํ™”๋„๊ตฌ ์œ„์ฃผ๋กœ ํ™œ์šฉ๋˜์—ˆ์œผ๋‚˜ ์ตœ๊ทผ์—๋Š” ๋น„์šฉ, ์ž์›, ๋ฆฌ์Šคํฌ ๋“ฑ์˜ ๋‹ค์–‘ํ•œ ๋ถ„์„ ๊ธฐ๋Šฅ์œผ๋กœ ํ™•์žฅ๋˜๊ณ  ์žˆ๋‹ค(๊ฐ•์ธ์„ 2012).

Table 2๋Š” ์ƒ์šฉ 4D CAD ์‹œ์Šคํ…œ๊ณผ ๊ธฐ์กด ๋ฌธํ—Œ๋ถ„์„์„ ํ†ตํ•ด ๊ฑด์„ค ํ”„๋กœ์ ํŠธ ๋‹จ๊ณ„๋ณ„๋กœ ์ ์šฉ ๊ฐ€๋Šฅํ•œ 4D CAD ๊ธฐ๋Šฅ๋“ค์„ ๋‚˜ํƒ€๋‚ด๊ณ  ์žˆ๋‹ค. ๋ถ„์„๋œ ๊ธฐ๋Šฅ๋“ค์€ ์ƒ์šฉ ๊ธฐ๋Šฅ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ๋‹ค์–‘ํ•œ ๊ธฐ์ˆ ์ด ์ ‘๋ชฉ๋œ ๋ถ€๊ฐ€๊ธฐ๋Šฅ๋“ค๊นŒ์ง€ ํฌํ•จํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ์ด๋ฅผ ๊ธฐํš, ๊ธฐ๋ณธ/์‹ค์‹œ์„ค๊ณ„ ๋ฐ ์‹œ๊ณต๋‹จ๊ณ„๋กœ ๊ตฌ๋ถ„ํ•˜์—ฌ ์ œ์‹œํ•˜์˜€๋‹ค(๊ฐ•์ธ์„ 2012).

2.3 BSC๊ธฐ๋ฐ˜ ์„ฑ๊ณผ์ง€ํ‘œ ์„ ์ •

๊ธฐ์กด ์ฐธ๊ณ ๋ฌธํ—Œ ๋ฐ ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ ์‚ฌ๋ก€ ๊ฒ€ํ† ๋ฅผ ํ†ตํ•œ ๊ธฐ์ดˆ์ž๋ฃŒ๋ฅผ ํ™œ์šฉํ•˜์—ฌ Fig. 2์™€ ๊ฐ™์ด 4D CAD ๋„์ž… ๋ฐ ์šด์šฉ์˜ ์„ฑ๊ณผ์ง€ํ‘œ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ BSC ์ „๋žต๋งต์„ ๊ตฌ์„ฑํ•˜์˜€๋‹ค. ์ „๋žต๋งต์€ ์ „๋žต ๋ชฉํ‘œ ๋‹ฌ์„ฑ์„ ์œ„ํ•ด ํ•„์š”ํ•œ ํ™œ๋™๋“ค์˜ ์ธ๊ณผ๊ด€๊ณ„๋ฅผ๋‚˜ํƒ€๋‚ธ ๊ฒƒ์œผ๋กœ์„œ 4๊ฐ€์ง€ ๊ด€์ ๊ณผ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ๋“ค์˜ ์ƒํ˜ธ๊ด€๊ณ„๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค.

4D CAD ๋„์ž… ๋ฐ ์šด์šฉ ํ‰๊ฐ€๋ฅผ ์œ„ํ•œ ์ „๋žต๋งต์€ ๊ณ ๊ฐ๋งŒ์กฑ๋„, ํ”„๋กœ์„ธ์Šค, ๊ธฐ์ˆ ์ง€์› ๊ต์œก ๋ฐ ์ •์ฑ…, ํˆฌ์ž๋น„์šฉ ํ™•๋ณด๋กœ ๊ตฌ์„ฑํ•˜๊ณ  ํˆฌ์ž๋น„์šฉ ํ™•๋ณด ๊ด€์ ์ด ๋งต์˜ ๊ฐ€์žฅ ํ•˜๋ถ€์— ๋ฐฐ์น˜๋œ๋‹ค. ์ด๋Š” ์ธ๊ณผ๊ด€๊ณ„๊ฐ€ ์•„๋ž˜์—์„œ ์œ„๋กœ ์ „๋‹ฌ๋˜์–ด ์ตœ์ข… ๋ชฉํ‘œ์ธ 4D CAD ํ™œ์šฉ์„ฑ์„ ๊ทน๋Œ€ํ™”ํ•  ์ˆ˜ ์žˆ๋‹ค.

PICF469.gif

Fig. 2. Strategy Map for Developing Indexes

์ฆ‰, ์—ฐ๊ตฌ๋น„์šฉ ๋ฐ ๊ต์œก์ง€์›์˜ ์ž๋ณธ ํ™•๋ณด๋Š” ํšจ์œจ์ ์ธ ๊ธฐ์ˆ ๋ ฅ ํ™•๋ณด์™€ ์ธ๋ ฅ์–‘์„ฑ์— ๊ธฐ์—ฌํ•˜๊ณ  ๊ธฐ์ˆ ๋ ฅ ํ™•๋ณด ๋ฐ ์ธ๋ ฅ์–‘์„ฑ์€ ๊ฑด์„ค๊ณต์‚ฌ์˜ ๊ธฐํš, ์„ค๊ณ„, ์‹œ๊ณต๋‹จ๊ณ„์—์„œ์˜ 4D CAD ์šด์˜ ์‹œ ํ™œ์šฉ๋„๋ฅผ ์ฆ๋Œ€์‹œํ‚ค๋Š” ์—ญํ• ์„ ์ˆ˜ํ–‰ํ•˜๊ฒŒ ๋œ๋‹ค. ๋”ฐ๋ผ์„œ ์ด์™€ ๊ฐ™์€ ์ธ๊ณผ๊ด€๊ณ„๋“ค์€ ๋‚ด๋ถ€, ์™ธ๋ถ€ ๊ณ ๊ฐ์˜ ๋งŒ์กฑ๋„๋ฅผ ๋†’์—ฌ ๋ชฉํ‘œ ๋‹ฌ์„ฑ์— ๊ธฐ์—ฌํ•˜๊ฒŒ ๋œ๋‹ค.

BSC๊ธฐ๋ฐ˜ ์„ฑ๊ณผ์ง€ํ‘œ๋Š” ์ „๋žต๋งต์„ ๊ธฐ์ดˆํ•˜์—ฌ ์˜ˆ๋น„ํ‰๊ฐ€ํ•ญ๋ชฉ๋“ค์„ ๊ตฌ์„ฑํ•˜๊ณ , ์ด๋ฅผ ์‹ค๋ฌด์ž๋“ค์˜ ์„ค๋ฌธ๊ณผ ์ธํ„ฐ๋ทฐ๋ฅผ ํ†ตํ•ด ์ตœ์ข…์ ์œผ๋กœ ์„ ์ •๋œ๋‹ค. ์˜ˆ๋น„ํ‰๊ฐ€ํ•ญ๋ชฉ์€ ๊ฑด์„ค๋‹จ๊ณ„๋ณ„ ์ฃผ์š” ํ™œ์šฉ๊ธฐ๋Šฅ๋“ค๊ณผ ์—…๋ฌด ๋งŒ์กฑ๋„๋ฅผ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋„๋ก ๋ฌธํ—Œ๊ณ ์ฐฐ์„ ํ†ตํ•ด ๋„์ถœํ•˜์˜€๋‹ค. ํŠนํžˆ 4D CAD ๊ธฐ๋Šฅ์˜ ํ™œ์šฉ๋ฒ”์œ„๊ฐ€ ํ™•๋Œ€๋จ์— ๋”ฐ๋ผ ๊ธฐ์—…์ฐจ์›์—์„œ์˜ ์ง€์› ๋ฐ ์šด์˜ ํ™˜๊ฒฝ์ด ๋ฐ˜์˜๋  ํ•„์š”์„ฑ์ด ์žˆ์œผ๋ฏ€๋กœ, ์ด๋ฅผ ์œ„ํ•œ ํ‰๊ฐ€ํ•ญ๋ชฉ๋“ค๋„ ํฌํ•จํ•˜์˜€๋‹ค.

์‹ค๋ฌด์ž๋“ค์˜ ์„ค๋ฌธ๊ณผ ์ธํ„ฐ๋ทฐ๋ฅผ ํ†ตํ•ด ์„ ์ •๋œ ๊ด€์ ๋ณ„ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ๊ณผ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋Š” Table 3๊ณผ ๊ฐ™์ด ๋„์ถœ ๋˜์—ˆ๋‹ค.

๊ณ ๊ฐ๋งŒ์กฑ๋„ ๊ด€์ ์€ 4D CAD์˜ ํ™œ์šฉ๋„์˜ ๋งŒ์กฑ๋„๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” ์ง€ํ‘œ๋กœ์จ ์‹ค์งˆ์ ์œผ๋กœ 4D CAD ์‹œ์Šคํ…œ์„ ์‚ฌ์šฉํ•˜๋Š” ์‹ค๋ฌด์ž๋ฅผ ๋‚ด๋ถ€๊ณ ๊ฐ์œผ๋กœ, ํˆฌ์ž์ž์ธ ๋ฐœ์ฃผ์ž๋Š” ์™ธ๋ถ€๊ณ ๊ฐ์œผ๋กœ ๊ตฌ๋ถ„ํ•˜์˜€๋‹ค. ์ด๋Š” ์ผ๋ฐ˜์ ์ธ ๊ณ ๊ฐ๋งŒ์กฑ์„ ํ†ตํ•œ ๊ณ ๊ฐ ์œ ์ง€ ๋ฐ ์œ ์น˜๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ์‹ค๋ฌด์ž์˜ ์—…๋ฌด ๋งŒ์กฑ๋„ ๋ถ„์„์„ ํ†ตํ•ด์„œ ์—…๋ฌดํšจ์œจ์„ฑ์„ ๊ทน๋Œ€ํ™”ํ•˜๊ธฐ ์œ„ํ•จ์ด๋‹ค. ์™ธ๋ถ€๊ณ ๊ฐ ๋งŒ์กฑ๋„ ํ–ฅ์ƒ์„ ์œ„ํ•œ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋Š” ๊ธฐํš๋ถ€ํ„ฐ ์‹œ๊ณต๋‹จ๊ณ„๊นŒ์ง€ ์ˆ˜ํ–‰๋˜๋Š” ์‹ค๋ฌดํšŒ์˜์—์„œ 4D CAD ํ™œ์šฉ ์‹œ ๋งŒ์กฑ๋„๋ฅผ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋„๋ก ๊ตฌ์„ฑํ•˜์˜€๊ณ , ๋‚ด๋ถ€๊ณ ๊ฐ ๋งŒ์กฑ๋„ ํ–ฅ์ƒ์—์„œ๋Š” ๊ธฐํš๋ถ€ํ„ฐ ์‹œ๊ณต๋‹จ๊ณ„๊นŒ์ง€ ๊ฐ๊ฐ์˜ ์—…๋ฌด์—์„œ 4D CAD ํ™œ์šฉ ์‹œ ์‹ค๋ฌด์ž์˜ ์—…๋ฌด ๋งŒ์กฑ๋„๋ฅผ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋„๋ก ๊ตฌ์„ฑํ•˜์˜€๋‹ค.

ํˆฌ์ž๋น„์šฉํ™•๋ณด ๊ด€์ ์€ 4D CAD ์ฒด๊ณ„๋ฅผ ํšจ์œจ์ ์œผ๋กœ ์šด์˜๏ฝฅ๊ด€๋ฆฌํ•  ์ˆ˜ ์žˆ๋„๋ก ์žฌ์ •์ ์œผ๋กœ ์–ผ๋งˆ๋‚˜ ์ง€์›์ด ๊ฐ€๋Šฅํ•œ๊ฐ€๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” ์ง€ํ‘œ๋กœ ๊ฐœ๋ฐœํ•˜์˜€๋‹ค. ํŠนํžˆ ์‹œ์Šคํ…œ ์šด์˜๋น„๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ์—ฐ๊ตฌ๊ฐœ๋ฐœ๋น„, ๊ต์œก ํ›ˆ๋ จ๋น„๋ฅผ ๊ณ ๋ คํ•จ์œผ๋กœ์จ ์ง€์†์ ์ธ ์‹ ๊ธฐ์ˆ  ๋ฐ ๊ธฐ๋Šฅ ๊ฐœ๋ฐœ์„ ํ†ตํ•œ 4D CAD ์‹œ์Šคํ…œ์˜ ๋ฐœ์ „์„ ์ถ”๊ตฌํ•˜์˜€๋‹ค. ์ด๋ฅผ ์œ„ํ•œ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋Š” ์—ฐ๊ตฌ๊ฐœ๋ฐœ๋น„ ํˆฌ์ž ๋น„์ค‘, ๊ต์œกํ›ˆ๋ จ ํˆฌ์ž ๋น„์ค‘, ์žฅ๋น„๊ตฌ์ถ•์„ ์œ„ํ•œ ํˆฌ์ž ๋น„์ค‘์œผ๋กœ ๊ตฌ์„ฑํ•˜์˜€๋‹ค.

ํ”„๋กœ์„ธ์Šคํ™œ์šฉ ๊ด€์ ์€ ๋‹ค์–‘ํ•œ 4D CAD ๊ธฐ๋Šฅ๋“ค์„ ํ•ด๋‹น ํ”„๋กœ์ ํŠธ์— ์–ผ๋งˆ๋‚˜ ํšจ์œจ์ ์œผ๋กœ ์ ์šฉํ•˜์—ฌ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋Š”๊ฐ€๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” ์ง€ํ‘œ์ด๋‹ค. ๊ฐœ๋ฐœ๋œ ์„ฑ๊ณผ์ง€ํ‘œ๋Š” ๊ตญ๋‚ด๏ฝฅ์™ธ ๊ฐœ๋ฐœ ์‹œ์Šคํ…œ ๋ฐ ๋ฌธํ—Œ ๋ถ„์„์„ ํ†ตํ•ด ๋„์ถœํ•œ 4D CAD ๊ธฐ๋Šฅ ์œ„์ฃผ๋กœ ๊ตฌ์„ฑํ•˜์˜€์œผ๋ฉฐ, ๊ธฐํš, ์„ค๊ณ„, ์‹œ๊ณต ๋‹จ๊ณ„๋ณ„ ํ™œ์šฉ์„ฑ์„ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•˜์˜€๋‹ค. ๊ธฐํš๋‹จ๊ณ„์—์„œ๋Š” ๊ฒฝ๊ด€ ๋ฐ ๊ตฌ์กฐ๋ฌผ ๋ฐฐ์น˜, ์ฃผ๋ณ€ ํ™˜๊ฒฝ, ๊ตํ†ต ์ฒ˜๋ฆฌ ๊ฒ€ํ† ์™€ ๊ฐ™์ด ๊ฐœ๋žต์ ์ธ ์„ค๊ณ„ ๊ฒ€ํ† ๋ฅผ ํ•  ์ˆ˜ ์žˆ๋„๋ก ๊ตฌ์„ฑํ•˜์˜€์œผ๋ฉฐ, ์„ค๊ณ„๋‹จ๊ณ„์—์„œ๋Š” ๋‹จ๋ฉด์˜ค๋ฅ˜, ์„ค๊ณ„ ์ ํ•ฉ์„ฑ ๊ฒ€ํ†  ๋ฐ ๊ณต๊ฐ„๊ณ„ํš ๋“ฑ์˜ ์ƒ์„ธ์„ค๊ณ„๋ฅผ ์œ„ํ•œ ํ™œ์šฉ์„ฑ ํ‰๊ฐ€๋กœ ๊ตฌ์„ฑํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์‹œ๊ณต๋‹จ๊ณ„๋Š” ๊ณต์ • ๋ฐ ์ง„๋„๊ด€๋ฆฌ์™€ ์‹œ๊ณต์„ฑ ๋ถ„์„, ๋น„์šฉ/์ž์›๊ด€๋ฆฌ, ์•ˆ์ „๊ต์œก, ์„ค๊ณ„๋ณ€๊ฒฝ ๋“ฑ์˜ ํ˜„์žฅ๊ด€๋ฆฌ์— ๋Œ€ํ•œ ํ™œ์šฉ์„ฑ์„ ํ‰๊ฐ€ํ•˜๋„๋ก ๊ตฌ์„ฑํ•˜์˜€๋‹ค.

๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ… ๊ด€์ ์€ 4D CAD ์ฒด๊ณ„๋ฅผ ํšจ์œจ์ ์œผ๋กœ ์‚ฌ์šฉํ•˜๊ธฐ ์œ„ํ•œ ๊ธฐ์ˆ ๋ ฅ๊ณผ ์ด๋ฅผ ์ˆ˜ํ–‰ํ•  ์ˆ˜ ์žˆ๋Š” ์ธ๋ ฅ์„ ์–ผ๋งˆ๋‚˜ ๋ณด์œ ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ์ด๋ฅผ ์œ„ํ•œ ๋…ธ๋ ฅ์„ ์–ผ๋งˆ๋‚˜ ํ•˜๋Š”๊ฐ€๋ฅผ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•œ ์ง€ํ‘œ๋กœ ๊ฐœ๋ฐœํ•˜์˜€๋‹ค. ์ฆ‰ ๊ธฐ์ˆ ์ง€์›๊ต์œก์€ 4D CAD ์ฒด๊ณ„์˜ ํšจ์œจ์ ์ธ ์šด์˜๏ฝฅ๊ด€๋ฆฌ๋ฅผ ์œ„ํ•œ ๊ต์œก์ฒด๊ณ„ ๋ฐ ๊ธฐ์ˆ ๋ ฅ ์ธก์ •์„ ์œ„ํ•œ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋กœ์จ ๊ด€๋ จ ์—ฐ๊ตฌํ”„๋กœ์ ํŠธ ์ˆ˜ํ–‰ ์‹ค์  ๋ฐ 3D ๋ชจ๋ธ๋ง ์ˆ˜์ค€, ์ •๋ณดํ™” ๋„๊ตฌ ํ™œ์šฉ์„ฑ ๋ฐ ์‹œ์Šคํ…œ ๊ตฌ์ถ• ์ˆ˜์ค€์œผ๋กœ ๊ตฌ์„ฑํ•˜์˜€์œผ๋ฉฐ, ์ธ๋ ฅ์–‘์„ฑ์„ ์œ„ํ•œ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋Š” ํ”„๋กœ๊ทธ๋žจ ๊ต์œก์ˆ˜์ค€ ๋ฐ ํ›ˆ๋ จ ๋นˆ๋„, ์ •๋ณดํ™” ๊ต์œก์„ ์ˆ˜๋ฃŒํ•œ ์‹ ๊ทœ์ธ๋ ฅ ์ฑ„์šฉ ๋น„์ค‘์œผ๋กœ ๊ตฌ์„ฑํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ •์ฑ…๋ฐ˜์˜์„ ์œ„ํ•œ ์ง€ํ‘œ๋Š” ์ •์ฑ… ๋ณ€๊ฒฝ์— ๋‹ค๋ฅธ ์ฆ‰๊ฐ์ ์ธ ๋ฐ˜์‘ ์ˆ˜์ค€์œผ๋กœ ๊ตฌ์„ฑํ•˜์˜€๋‹ค.

Table 3. Indexes for Availability Assessment of Introduction 4D CAD

perspective 

CSF

KPI

C. Customer satisfaction

C.a

External customer satisfaction

C.a.1 What is the satisfaction degree of working-level meeting with simulation in planning phase?

C.a.2 What is the satisfaction degree of working-level meeting with simulation in design phase?

C.a.3 What is the satisfaction degree of working-level meeting with simulation in construction phase?

C.a.4 What is the satisfaction degree of simulation for corporate public relations and advertisement?

C.b

Internal customer satisfaction

C.b.1 What is the satisfaction degree of business process with 4D CAD in planning phase?

C.b.2 What is the satisfaction degree of business process with 4D CAD in design phase?

C.b.3 What is the satisfaction degree of business process with 4D CAD in construction phase?

C.b.4 What is the satisfaction degree of simulation for corporate public relations and advertisement?

E. Securement of investment cost

E.a

Research support

E.a.1 How much is the investment proportion of research and development cost for 4D CAD technical development?

E.b

Education support

E.b.1 How much is the investment proportion of education and training cost for manpower training of 4D CAD systems?

E.c

Equipment support

E.c.1 How much is the investment proportion of purchasing equipment (hardware, software etc.) for developing 4D CAD systems?

P. Process

P.a

Efficiency improvement forplanning phase

P.a.1 What is the availability degree of scene simulation?

P.a.2 What is the availability degree of planning simulation for building arrangement?

P.a.3 What is the availability degree of influence review simulation for the surrounding environment?

P.a.4 What is the availability degree of planning simulation for the traffic management?

P.b

Efficiency improvement for design phase

P.b.1 What is the availability degree of review simulation for the cross section errors?

P.b.2 What is the availability degree of constructability review simulation?

P.b.3 What is the availability degree of review simulation for design adequacy?

P.b.4 What is the availability degree of review simulation for space planning?

P.c

Efficiency improvement for construction phase

P.c.1 What is the availability degree of schedule management simulation?

P.c.2 What is the availability degree of progress management simulation?

P.c.3 What is the availability degree of constructability analysis simulation?

P.c.4 What is the availability degree of cost and resources management simulation?

P.c.5 What is the availability degree of safety education simulation for safety accident prevention?

P.c.6 What is the availability degree of simulation for the design changes?

G. Education process and policy

G.a

Technology development

G.a.1 What is the performance degree of information and technology projects related 3D and 4D?

G.a.2 What is the availability degree of 3D modeling?

G.a.3 What is the availability degree of information technology tools for schedule management?

G.a.4 What is the buid-up degree of information system (hardware, software)?

G.b

Manpower training

G.b.1What is the education level of program related information technology for employees?

G.b.2 What is the frequency level of education and training implementation for employees?

G.b.3 How much is the employment proportion of new manpower trained information technology education?

G.c

Policy reflection

G.c.1 What is the reflection level by changing policy?

3. ์„ค๋ฌธ์กฐ์‚ฌ๋ฅผ ํ†ตํ•œ 4D CAD ๋„์ž… ํ™œ์šฉ์„ฑ ํ‰๊ฐ€ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ๊ฐ€์ค‘์น˜ ์„ ์ •

์•ž์„œ ๋„์ถœ๋œ ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์€ 4๊ฐ€์ง€ ๊ด€์ „๋ณ„๋กœ ์ƒํ˜ธ ๋…๋ฆฝ์ ์œผ๋กœ ์„ ์ •๋˜์—ˆ๋‹ค. ๋”ฐ๋ผ์„œ 4D CAD ๋„์ž… ๋ฐ ์šด์šฉ์˜ ํ™œ์šฉ์„ฑ์„ ์ •๋Ÿ‰์ ์ด๊ณ  ํ†ตํ•ฉ์ ์œผ๋กœ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ๋น„์ค‘์ด ์„œ๋กœ ๋‹ค๋ฅธ ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ ์ค‘์š”๋„๋ฅผ ๊ฒฐ์ •ํ•˜์—ฌ์•ผ ํ•œ๋‹ค.

3.1 ์„ค๋ฌธ์กฐ์‚ฌ ๊ฐœ์š”

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ ๊ฐ€์ค‘์น˜ ์‚ฐ์ •์„ ์œ„ํ•ด ํ† ๋ชฉ๊ณต์‚ฌ ํ˜„์—…์— ์ข…์‚ฌํ•˜๋Š” ๊ฑด์„ค ์ „๋ฌธ๊ฐ€๋ฅผ ๋Œ€์ƒ์œผ๋กœ ์„ค๋ฌธ์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ์„ค๋ฌธ๊ธฐ๊ฐ„์€ 2010๋…„ 8์›” 9์ผ๋ถ€ํ„ฐ 9์›” 10์ผ๊นŒ์ง€ ์•ฝ 30์ผ๊ฐ„์ด๋ฉฐ, ์„ค๋ฌธ ๋ฐฉ๋ฒ•์€ ์„œ๋ฉด ๋˜๋Š” e-mail ๋ฐœ์†ก ๋ฐ ๋ฐฉ๋ฌธ์— ์˜ํ•œ ๋ฉด๋‹ด์„ ํ†ตํ•˜์—ฌ ์„ค๋ฌธ์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ์„ค๋ฌธ ํšŒ์ˆ˜์œจ์€ ์ด 100๋ถ€์— ๋Œ€ํ•ด 60๋ถ€๋งŒ ํšŒ์ˆ˜๋˜์–ด ์ด 60%์˜ ์„ค๋ฌธ ์‘๋‹ต๋ฅ ์„ ๋ณด์˜€๋‹ค. ์„ค๋ฌธํ˜•์‹์€ AHP ๋ฐฉ๋ฒ•๋ก ์„ ํ™œ์šฉํ•˜์˜€์œผ๋ฉฐ, ๊ฐ๊ฐ ์„ฑ๊ณผ์ง€ํ‘œ๋“ค ๊ฐ„์˜ ์Œ๋Œ€๋น„๊ต๋ฅผ ํ†ตํ•ด ๊ฐ€์ค‘์น˜๋ฅผ ๋ถ„์„ํ•˜๋„๋ก ๊ตฌ์„ฑํ•˜์˜€๋‹ค.

์„ค๋ฌธ๋Œ€์ƒ์˜ ์ง๋ฌด ํ˜„ํ™ฉ์€ ์‹œ๊ณต์‚ฌ(60%), ๊ฐ๋ฆฌ์‚ฌ(22%), ์„ค๊ณ„์‚ฌ(18%)๋กœ ๊ตฌ์„ฑ๋˜๊ณ , ์„ค๋ฌธ๋Œ€์ƒ์˜ 45%์ด์ƒ์ด 10๋…„ ์ด์ƒ์˜ ์‹ค๋ฌด๊ฒฝ๋ ฅ์„ ๋ณด์œ ํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

3.2 ์„ค๋ฌธ์กฐ์‚ฌ ๋ถ„์„๊ฒฐ๊ณผ

์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ ๊ฐ€์ค‘์น˜ ๋ถ„์„์€ AHP ๋ถ„์„ ์†Œํ”„ํŠธ์›จ์–ด ํŒจํ‚ค์ง€์ธ โ€œExpertChoice 2000โ€์„ ์‚ฌ์šฉํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ž๋ฃŒ์˜ ์‹ ๋ขฐ๋„๋ฅผ ์œ„ํ•ด์„œ AHP์˜ ์ผ๊ด€์„ฑ ๋น„์œจ์ด 10% ์ด์ƒ์ธ ๊ฐ€์ค‘์น˜๋งŒ์„ ํ™œ์šฉํ•˜์—ฌ ์‚ฐ์ •ํ•˜๊ณ  ์—…๋ฌด๋ณ„๋กœ ์‹œ๊ณต์‚ฌ, ๊ฐ๋ฆฌ์‚ฌ, ์„ค๊ณ„์‚ฌ๋กœ ๊ตฌ๋ถ„ํ•˜์˜€๋‹ค.

3.2.1 ๊ด€์ ๋ณ„ ๊ฐ€์ค‘์น˜ ๋ถ„์„

๊ฐ ๊ด€์ ๋ณ„ ๊ฐ€์ค‘์น˜ ๋ถ„์„๊ฒฐ๊ณผ์—์„œ๋Š” Fig. 3๊ณผ ๊ฐ™์ด ํ‰๊ท ์ ์œผ๋กœ ๊ณ ๊ฐ๋งŒ์กฑ๋„, ํˆฌ์ž๋น„์šฉ ํ™•๋ณด, ํ”„๋กœ์„ธ์Šค ํ™œ์šฉ, ๊ธฐ์ˆ  ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ… ์ˆœ์œผ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚œ๋‹ค. ํŠนํžˆ, ๊ณ ๊ฐ๋งŒ์กฑ๋„๊ด€์ ์—์„œ๋Š” ๊ฐ๋ฆฌ์—…๋ฌด๊ฐ€ ๊ฐ€์žฅ ๋†’์€ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š”๋ฐ ์ด๋Š” ๊ฐ๋ฆฌ์‚ฌ์˜ ์ฃผ์š” ์—…๋ฌด๊ฐ€ ๋ฐœ์ฃผ์ž ๋ฐ ๊ณ ๊ฐ๋“ค์˜ ๊ฐ๋…๋Œ€ํ–‰์— ๋”ฐ๋ฅธ ์—…๋ฌด์  ํŠน์ง•์— ๊ธฐ์ธํ•œ ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋œ๋‹ค. ๋˜ํ•œ ํˆฌ์ž๋น„์šฉํ™•๋ณด ๊ด€์ ์—์„œ๋Š” ์‹œ๊ณต์—…๋ฌด๊ฐ€ ๊ฐ€์žฅ ๋†’์€ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ธ ๊ฒƒ์€ ์‹ค์ œ ์—…๋ฌด๋ฅผ ์ˆ˜ํ–‰ํ•จ์— ์žˆ์–ด ๊ฐ€์žฅ ๋งŽ์€ ๋น„์šฉ์ด ์š”๊ตฌ๋˜๋ฏ€๋กœ ๋น„์šฉํ™•๋ณด์— ์ค‘์ ์„ ๋‘” ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋œ๋‹ค.

3.2.2 ๊ณ ๊ฐ๋งŒ์กฑ๋„ ๊ด€์ 

๊ณ ๊ฐ๋งŒ์กฑ๋„ ๊ด€์ ์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์— ๋Œ€ํ•œ ๊ฐ€์ค‘์น˜๋Š” Fig. 4์™€ ๊ฐ™์ด ๋ถ„์„๋˜์—ˆ๋‹ค. Fig. 4๋ฅผ ์‚ดํŽด๋ณด๋ฉด ๊ณ ๊ฐ๋งŒ์กฑ๋„์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์ธ ์™ธ๋ถ€ ๊ณ ๊ฐ ๋ฐ ๋‚ด๋ถ€ ๊ณ ๊ฐ์— ๋Œ€ํ•œ ๊ฐ€์ค‘์น˜๋Š” ๊ฐ๋ฆฌ, ์„ค๊ณ„, ์‹œ๊ณต์—…๋ฌด ๋ชจ๋‘ ์™ธ๋ถ€ ๊ณ ๊ฐ์˜ ๊ฐ€์ค‘์น˜๊ฐ€ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

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Fig. 3. Weighting Values by Work-Scope  Perspective

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Fig. 4. Weighting Values of CSF by Customer Satisfaction Perspective

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Fig. 5. Weighting Values of KPI for Customer Satisfaction Perspective

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Fig. 6. Weighting Values of CSF by Investment Cost Perspective

์™ธ๏ฝฅ๋‚ด๋ถ€ ๊ณ ๊ฐ์˜ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ์— ๋Œ€ํ•œ ๊ฐ€์ค‘์น˜๋ฅผ ๋ถ„์„ํ•œ ๊ฒฐ๊ณผ๋Š” Fig. 5์™€ ๊ฐ™์ด ์™ธ๋ถ€ ๊ณ ๊ฐ์€ ์„ค๊ณ„, ๊ธฐํš, ์‹œ๊ณต, ๊ธฐ์—…ํ™๋ณด ๋ฐ ๊ด‘๊ณ  ์ˆœ์œผ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ๋‚ด๋ถ€ ๊ณ ๊ฐ์€ ์„ค๊ณ„, ์‹œ๊ณต, ๊ธฐํš, ๊ธฐ์—…ํ™๋ณด ๋ฐ ๊ด‘๊ณ  ์ˆœ์œผ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

ํŠนํžˆ, ์„ค๊ณ„๋‹จ๊ณ„์—์„œ์˜ 4D CAD ํ™œ์šฉ ๊ฐ€์ค‘์น˜๋Š” ๋‚ด๏ฝฅ์™ธ๋ถ€ ๋ชจ๋‘ ๊ฐ€์žฅ ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ์—…๋ฌด๋ณ„ ๋ถ„์„์—์„œ๋Š” ์„ค๊ณ„์—…๋ฌด๊ฐ€ ๋‹ค๋ฅธ ์—…๋ฌด์— ๋น„ํ•ด ๊ฐ€์ค‘์น˜๊ฐ€ ๊ฐ€์žฅ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค.

3.2.3 ํˆฌ์ž๋น„์šฉํ™•๋ณด ๊ด€์ 

ํˆฌ์ž๋น„์šฉํ™•๋ณด์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์— ๋Œ€ํ•œ ๊ฐ€์ค‘์น˜๋Š” Fig. 6๊ณผ ๊ฐ™์ด ๋ถ„์„๋˜์—ˆ๋‹ค. ํˆฌ์ž๋น„์šฉํ™•๋ณด์—์„œ๋Š” ํ‰๊ท ์ ์œผ๋กœ ์—ฐ๊ตฌ, ๊ต์œก, ์žฅ๋น„์ง€์›์ด ๋น„์Šทํ•œ ๊ฐ€์ค‘์น˜๋ฅผ ๊ฐ€์ง€๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ์„ค๊ณ„์—…๋ฌด์—์„œ๋Š” ์—ฐ๊ตฌ์ง€์› ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์— ํฐ ๊ฐ€์ค‘์น˜๋ฅผ ๋ณด์ด๋Š”๋ฐ, ์ด๋Š” ์ ์  ๋ณต์žกํ™”๋˜๋Š” 3D ๋ฐ 4D ๊ฐ์ฒด ๋ชจ๋ธ๋ง ์ž‘์—…๋“ค์˜ ์†Œ์š”๋˜๋Š” ๋น„์šฉ๊ณผ ์‹œ๊ฐ„์„ ๋‹จ์ถ•์‹œํ‚ค๊ธฐ ์œ„ํ•œ ์—ฐ๊ตฌ์ง€์›์— ๊ด€์‹ฌ์ด ๋†’์•„์ง„ ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋œ๋‹ค.

3.2.4 ํ”„๋กœ์„ธ์Šค ๊ด€์ 

ํ”„๋กœ์„ธ์Šค ๊ด€์ ์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ ๊ฐ€์ค‘์น˜๋Š” Fig. 7๊ณผ ๊ฐ™์ด ํ‰๊ท ์ ์œผ๋กœ ์„ค๊ณ„, ๊ธฐํš, ์‹œ๊ณต๋‹จ๊ณ„ ์ˆœ์œผ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋‚˜ํƒ€๋‚œ๋‹ค. ์—…๋ฌด๋ณ„๋กœ๋Š” ๊ธฐํš๋‹จ๊ณ„์—์„œ ๊ฐ๋ฆฌ์—…๋ฌด๊ฐ€ ๋†’์€ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ๋ฐ˜๋ฉด ์„ค๊ณ„์—…๋ฌด๋Š” ๊ฐ€์žฅ ๋‚ฎ์€ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ด๊ณ  ์žˆ๋‹ค. ์„ค๊ณ„๋‹จ๊ณ„์—์„œ๋Š” ์„ค๊ณ„์—…๋ฌด๊ฐ€ ๋†’์€ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ด๊ณ , ๊ฐ๋ฆฌ์—…๋ฌด๋Š” ๊ฐ€์žฅ ๋‚ฎ์€ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. ์‹œ๊ณต๋‹จ๊ณ„์—์„œ๋Š” ๊ฐ๋ฆฌ, ์„ค๊ณ„, ์‹œ๊ณต์—…๋ฌด ๋ชจ๋‘ ๋น„์Šทํ•œ ๊ฐ€์ค‘์น˜๋ฅผ ๋ณด์ด๊ณ  ์žˆ๋‹ค.

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Fig. 7. Weighting Values of CSF by Process Perspective

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Fig. 8. Weighting Values of KPI for Process Perspective

Fig. 8์€ ํ”„๋กœ์„ธ์Šค์˜ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ์— ๋Œ€ํ•œ ๊ฐ€์ค‘์น˜๊ฒฐ๊ณผ๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. ๊ฐ ๋‹จ๊ณ„๋ฅผ ์—…๋ฌด๋ณ„๋กœ ๋ถ„์„ํ•˜๋ฉด, ๊ธฐํš๋‹จ๊ณ„์—์„œ ๊ฐ๋ฆฌ์—…๋ฌด๋Š” ๊ตฌ์กฐ๋ฌผ ๋ฐฐ์น˜, ์ฃผ๋ณ€ ํ™˜๊ฒฝ๊ฒ€ํ† , ๊ฒฝ๊ด€, ๊ตํ†ต์ฒ˜๋ฆฌ ๋ถ„์„ ์ˆœ์„œ์ด๊ณ , ์„ค๊ณ„์—…๋ฌด๋Š” ๊ตํ†ต์ฒ˜๋ฆฌ ๋ถ„์„, ๊ตฌ์กฐ๋ฌผ ๋ฐฐ์น˜, ์ฃผ๋ณ€ ํ™˜๊ฒฝ๊ฒ€ํ† , ๊ฒฝ๊ด€ ์ˆœ์„œ์ด๋ฉฐ, ์‹œ๊ณต์—…๋ฌด๋Š” ๊ตฌ์กฐ๋ฌผ ๋ฐฐ์น˜, ๊ฒฝ๊ด€, ๊ตํ†ต์ฒ˜๋ฆฌ ๋ถ„์„, ์ฃผ๋ณ€ ํ™˜๊ฒฝ๊ฒ€ํ†  ์ˆœ์„œ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋ถ„์„๋˜์—ˆ๋‹ค.

์„ค๊ณ„๋‹จ๊ณ„์—์„œ๋Š” ์„ค๊ณ„์—…๋ฌด๋ฅผ ์ œ์™ธํ•˜๊ณ  ๋‹จ๋ฉด์˜ค๋ฅ˜ ๊ฒ€ํ† , ์‹œ๊ณต์„ฑ ๊ฒ€ํ† , ์„ค๊ณ„์ ํ•ฉ์„ฑ ๊ฒ€ํ† , ๊ณต๊ฐ„๊ณ„ํš ๊ฒ€ํ†  ์ˆœ์œผ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋ถ„์„๋˜์—ˆ๋‹ค. ์‹œ๊ณต๋‹จ๊ณ„์—์„œ์˜ ๊ฐ€์ค‘์น˜๋Š” ๊ณต์ •๊ด€๋ฆฌ, ์ง„๋„๊ด€๋ฆฌ, ์‹œ๊ณต์„ฑ ๋ถ„์„, ๋น„์šฉ/์ž์› ๋ถ„์„, ์•ˆ์ „์‚ฌ๊ณ , ์„ค๊ณ„ ๋ณ€๊ฒฝ๊ฒ€ํ†  ์ˆœ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค.

3.2.5 ๊ธฐ์ˆ ๊ต์œก์ง€์› ๋ฐ ์ •์ฑ… ๊ด€์ 

๊ธฐ์ˆ ๊ต์œก์ง€์› ๋ฐ ์ •์ฑ… ๊ด€์ ์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ ๊ฐ€์ค‘์น˜๋Š” Fig. 9์™€ ๊ฐ™์ด ๋ถ„์„๋˜์—ˆ๋‹ค. Fig. 9๋ฅผ ์‚ดํŽด๋ณด๋ฉด ๊ธฐ์ˆ ๋ ฅ ํ™•๋ณด, ์ธ๋ ฅ์–‘์„ฑ, ์ •์ฑ…๋ฐ˜์˜ ์ˆœ์„œ๋กœ ๊ฐ€์ค‘์น˜๊ฐ€ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ์—…๋ฌด๋ณ„ ๋ถ„์„ ๋˜ํ•œ ํ‰๊ท ๊ณผ ์œ ์‚ฌํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ํŠนํžˆ ๊ธฐ์ˆ ๋ ฅ ํ™•๋ณด๊ฐ€ ์ธ๋ ฅ์–‘์„ฑ ๋ฐ ์ •์ฑ…๋ฐ˜์˜์— ๋น„ํ•ด 2๋ฐฐ๊ฐ€๋Ÿ‰ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค.

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Fig. 9. Weighting Values of CSF by Education Process and Policy Perspective

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Fig. 10. Weighting Values of KPI for Education Process and Policy Perspective

Fig. 10์€ ๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ… ๊ด€์  ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ ๊ฐ€์ค‘์น˜๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. Fig. 10๊ณผ ๊ฐ™์ด ๊ธฐ์ˆ ๋ ฅํ™•๋ณด ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์— ํ•ด๋‹นํ•˜๋Š” ์ง€ํ‘œ๋“ค์€ ์„ค๊ณ„์—…๋ฌด๋ฅผ ์ œ์™ธํ•˜๊ณ  ํ‰๊ท ๊ณผ ๋น„์Šทํ•œ ๊ฐ€์ค‘์น˜ ๊ฐ’์„ ๋‚˜ํƒ€๋‚ด๋ฉฐ, ์„ค๊ณ„์—…๋ฌด๋Š” 3D ๋ชจ๋ธ๋ง ํ™œ์šฉ๋„ ์ง€ํ‘œ์— ๋†’์€ ๊ฐ’์„ ๊ฐ–๋Š” ๋ฐ˜๋ฉด ๊ณต์ •๊ด€๋ฆฌ ๋ฐ ์ •๋ณดํ™” ์‹œ์Šคํ…œ ๊ตฌ์ถ• ์ˆ˜์ค€ ์ง€ํ‘œ์—๋Š” ํ‰๊ท ์ดํ•˜์˜ ๊ฐ’์„ ๋ณด์ด๊ณ  ์žˆ๋‹ค. ์ธ๋ ฅ์–‘์„ฑ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ ์ง€ํ‘œ์˜ ๊ฐ€์ค‘์น˜๋Š” ๊ฐ๋ฆฌ์—…๋ฌด๋ฅผ ์ œ์™ธํ•˜๊ณ  ํ‰๊ท ๊ณผ ๋น„์Šทํ•œ ๊ฐ€์ค‘์น˜ ๊ฐ’์„ ๋‚˜ํƒ€๋‚ด๊ณ  ์žˆ์œผ๋ฉฐ, ๊ฐ๋ฆฌ์—…๋ฌด๋Š” ์ •๋ณดํ™”๊ด€๋ จ ํ”„๋กœ๊ทธ๋žจ์— ํ‰๊ท ์ดํ•˜์˜ ๊ฐ’์„ ๋ณด์ด๊ณ  ์žˆ๋Š” ๋ฐ˜๋ฉด ๊ต์œก ํ›ˆ๋ จ ๋ฐ ์‹ ๊ทœ์ธ๋ ฅ ์ฑ„์šฉ์— ๋†’์€ ๊ฐ€์ค‘์น˜ ๊ฐ’์„ ๋‚˜ํƒ€๋‚ด๊ณ  ์žˆ๋‹ค.

3.2.6 ์—…๋ฌด๋ณ„ ์„ฑ๊ณผ์ง€ํ‘œ ์šฐ์„ ์ˆœ์œ„

Fig. 11์€ ์—…๋ฌด๋ณ„ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ๊ฐ€์ค‘์น˜ ๋ฐ ์šฐ์„ ์ˆœ์œ„๋ฅผ ๋‚˜ํƒ€๋‚ด๊ณ  ์žˆ๋‹ค. ์ด๋Š” ์—…๋ฌด๋ณ„๋กœ 4D CAD ํ™œ์šฉ์„ฑ ํ‰๊ฐ€์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์„ฑ๊ณผ์ง€ํ‘œ์˜ ์ •๋„๋ฅผ ํŒŒ์•…ํ•  ์ˆ˜ ์žˆ๊ฒŒ ํ•จ์œผ๋กœ์จ ํšจ์œจ์ ์ธ ์„ฑ๊ณผ์ง€ํ‘œ๊ด€๋ฆฌ๋ฅผ ๊ฐ€๋Šฅํ•˜๊ฒŒ ํ•œ๋‹ค.

ํ•œ ์˜ˆ๋กœ Fig. 11์—์„œ ์ดํ•ฉ ์—…๋ฌด๋ณ„ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ๊ฐ€์ค‘์น˜ ๋ฐ ์šฐ์„ ์ˆœ์œ„๋ฅผ ์‚ดํŽด๋ณด๋ฉด, ๊ฐ€์žฅ ๋†’์€ ์šฐ์„ ์ˆœ์œ„๋Š” C.a.2์ด๊ณ , ๊ทธ ๋’ค๋Š” C.a.1, C.a.3, E.a.1, C.b.2 ์ˆœ์„œ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ์„ค๊ณ„ ์—…๋ฌด๋ณ„ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ๊ฒฝ์šฐ ์—ญ์‹œ C.a.2 ์„ฑ๊ณผ์ง€ํ‘œ๊ฐ€ ๊ฐ€์žฅ ๋†’์€ ์šฐ์„ ์ˆœ์œ„๋ฅผ ๊ฐ€์ง€๋ฉฐ, E.a.1, C.a.1, G.a.1, ์ˆœ์„œ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ๊ฐ๋ฆฌ ์—…๋ฌด์—์„œ์˜ ์ตœ๊ณ  ์šฐ์„ ์ˆœ์œ„๋Š” C.a.1์ด๋ฉฐ, C.a.2, C.a.3, C.b.3, ์ˆœ์œผ๋กœ ์ˆœ์œ„๊ฐ€ ๊ฒฐ์ •๋˜์—ˆ๋‹ค. ์‹œ๊ณต ์—…๋ฌด์˜ ๊ฒฝ์šฐ์—์„œ๋„ C.a.2๊ฐ€ ๊ฐ€์žฅ ๋†’์€ ์ˆœ์œ„๋กœ ๊ฒฐ์ •๋˜์—ˆ๋‹ค. ์ด์™€ ๊ฐ™์ด ์—…๋ฌด๋ณ„ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ์šฐ์„ ์ˆœ์œ„์—์„œ๋Š” ๊ณ ๊ฐ๋งŒ์กฑ๋„, ํˆฌ์ž๋น„์šฉํ™•๋ณด ๊ด€์ ์— ์†ํ•˜๋Š” ์ง€ํ‘œ๋“ค์ด ์šฐ์„ ์ˆœ์œ„๊ฐ€ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ์œผ๋ฉฐ, ์ด๋Š” ๊ฐ€์ค‘์น˜ ์‚ฐ์ •์—์„œ ๊ณ ๊ฐ๋งŒ์กฑ๋„์™€ ํˆฌ์ž๋น„์šฉํ™•๋ณด๊ฐ€ ๋น„๊ต์  ๋†’์€ ๊ฐ€์ค‘์น˜๋กœ ์‚ฐ์ •๋˜์—ˆ๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค.

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Fig. 11. Weighting Values and Priority List of CSF, KPI by Work-Cope 

4. 4D ์‹œ์Šคํ…œ์˜ ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜• ๊ตฌ์„ฑ ๋ฐ ์‹œ๋‚˜๋ฆฌ์˜ค๊ธฐ๋ฐ˜ ์‚ฌ๋ก€์ ์šฉ

4.1 ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜•

4D CAD ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜•์€ ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„ ๊ฐ€์ค‘์น˜ ๋ฐ ์šฐ์„ ์ˆœ์œ„๋ฅผ ๊ธฐ์ดˆํ•˜์—ฌ 4D CAD์˜ ๋„์ž… ๋ฐ ์šด์šฉ์— ๋Œ€ํ•œ ํ™œ์šฉ๋„ ์ •๋„๋ฅผ ์ •๋Ÿ‰์ ์œผ๋กœ ํ‰๊ฐ€ ํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•˜์˜€๋‹ค. 4D CAD ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜• ๊ตฌ์„ฑ๋„์€ Fig. 12์™€ ๊ฐ™์ด ๊ตฌ์„ฑ๋˜๋ฉฐ, ์•ž์„œ ์ˆ˜ํ–‰๋œ ์„ฑ๊ณผ ์ง€ํ‘œ ๊ฐœ๋ฐœ ๋ฐ ๊ฐ€์ค‘์น˜ ์‚ฐ์ •๋‹จ๊ณ„์™€ 4D CAD ํ™œ์šฉ๋„๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” ํ‰๊ฐ€ ๋ชจํ˜• ๋‹จ๊ณ„๋กœ ๊ตฌ์„ฑ๋œ๋‹ค.

4D CAD ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜• ํ”„๋กœ์„ธ์Šค๋Š” ๋ฐ์ดํ„ฐ ์ž…๋ ฅ, ์ •๋Ÿ‰์  ๋ถ„์„, ํ™œ์šฉ๋„ ๋„์ถœ ๋‹จ๊ณ„๋กœ ๊ตฌ์„ฑ๋œ๋‹ค. ๋จผ์ € ๋ฐ์ดํ„ฐ ์ž…๋ ฅ ๋‹จ๊ณ„๋Š” ํ‰๊ฐ€์ž์˜ ์—…๋ฌด๋ฅผ ๊ตฌ๋ถ„ํ•˜๊ณ  ์—…๋ฌด๋ณ„ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ์˜ ํ™œ์šฉ๋„ ์ ์ˆ˜๋ฅผ 5์  ์ฒ™๋„์— ๋”ฐ๋ผ ์ž…๋ ฅํ•  ์ˆ˜ ์žˆ๋„๋ก ๊ตฌ์„ฑ๋œ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ด๋Š” ์ •๋Ÿ‰์  ๋ถ„์„๋‹จ๊ณ„๋ฅผ ํ†ตํ•ด์„œ ๊ด€์ ๋ณ„, ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ๋ณ„, ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„ ํ™œ์šฉ ์ •๋„๊ฐ€ ์‚ฐ์ •๋˜์–ด ํ™œ์šฉ๋„ ๋„์ถœ ๋‹จ๊ณ„์—์„œ 4D CAD ํ™œ์šฉ์— ๋Œ€ํ•œ ์ด๊ด„์ ์ธ ํ™œ์šฉ๋„ ์ ์ˆ˜์™€ ์„ธ๋ถ€ ์„ฑ๊ณผ์š”์ธ ๋ฐ ์ง€ํ‘œ์˜ ์šฐ์„ ์ˆœ์œ„ ๋ฐ ํ™œ์šฉ๋„ ์ ์ˆ˜๋ฅผ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด๋ฅผ ํ†ตํ•ด 4D CAD์˜ ํ™œ์šฉ ์ •๋„๋ฅผ ํŒŒ์•…ํ•˜๊ณ , ํ™œ์šฉ์„ ์ €ํ•ดํ•˜๋Š” ์š”์†Œ๋“ค์„ ๋„์ถœํ•˜์—ฌ ํšจ์œจ์ ์œผ๋กœ 4D CAD๋ฅผ ํ™œ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ๋Œ€์ฑ…์„ ๋งˆ๋ จํ•  ์ˆ˜ ์žˆ๋‹ค.

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Fig. 12. Process of Availability Assessment Model for 4D CAD

4.2 ์‹œ๋‚˜๋ฆฌ์˜ค๊ธฐ๋ฐ˜ ์‚ฌ๋ก€์ ์šฉ

๋ณธ ์ ˆ์—์„œ๋Š” 4D CAD ํ™œ์šฉ๋„ ํ‰๊ฐ€ ๋ชจํ˜•์˜ ์ ์šฉ์„ฑ์„ ํŒ๋‹จํ•˜๊ธฐ ์œ„ํ•˜์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๊ฐ€์ƒ์˜ ์‹œ๋‚˜๋ฆฌ์˜ค๋ฅผ ์ž‘์„ฑํ•˜์—ฌ 4D CAD ํ™œ์šฉ์„ฑ ํ‰๊ฐ€๋ฅผ ์‹ค์‹œํ•˜์˜€๋‹ค.

์ฒซ์งธ, ๊ฑด์„คํšŒ์‚ฌ์—์„œ ํšจ์œจ์ ์ธ ๊ฑด์„คํ”„๋กœ์ ํŠธ์˜ ์šด์˜์„ ์œ„ํ•œ 4D CAD ์‹œ์Šคํ…œ์˜ ๋„์ž… ์—ฌ๋ถ€๋ฅผ ํŒ๋‹จํ•˜๊ธฐ ์œ„ํ•œ ๊ธฐ์ค€๊ทผ๊ฑฐ๋กœ์จ ๋ณธ ํ‰๊ฐ€๋ชจํ˜•์„ ํ™œ์šฉํ•œ๋‹ค.

๋‘˜์งธ, 4D CAD ํ™œ์šฉ์„ฑ ํ‰๊ฐ€ ๋ชจํ˜•์„ ์‚ฌ์šฉํ•˜์—ฌ ํ™œ์šฉ์„ฑ์„ ํ‰๊ฐ€ํ•˜๊ณ , ํ™œ์šฉ์„ฑ์ด ๋‚ฎ์€ ์„ฑ๊ณผ์ง€ํ‘œ๋ฅผ ๋„์ถœํ•˜์—ฌ ๋Œ€์ฑ…์„ ์ˆ˜๋ฆฝํ•œ๋‹ค. ๋Œ€์ฑ… ์ˆ˜๋ฆฝ ํ›„ ์žฌ ํ™œ์šฉ์„ฑ์„ ํ‰๊ฐ€ํ•˜์—ฌ ์ตœ์ข…์ ์œผ๋กœ 4D CAD ์‹œ์Šคํ…œ ๋„์ž… ์—ฌ๋ถ€๋ฅผ ํŒ๋‹จํ•œ๋‹ค.

4.2.1 ๋ฐ์ดํ„ฐ ์ž…๋ ฅ

4D CAD ํ™œ์šฉ์„ฑ ํ‰๊ฐ€ ๋ชจํ˜•์— ์‚ฌ์šฉ๋˜๋Š” ์„ค์ • ๋ฐ์ดํ„ฐ ๊ฐ’์€ ์ดํ•ฉ, ๊ฐ๋ฆฌ, ์„ค๊ณ„, ์‹œ๊ณต ์—…๋ฌด๋ณ„๋กœ ๋ถ„์„๋˜์–ด์ง„ ๊ฐ€์ค‘์น˜ ๊ฐ’์œผ๋กœ ๊ตฌ์„ฑ๋œ๋‹ค. ๊ฐ๊ฐ์˜ ์—…๋ฌด๋ณ„ ๊ฐ€์ค‘์น˜๋Š” Fig.13๊ณผ ๊ฐ™๋‹ค.

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Fig. 13. Weighting Values Database of CSF and KPI by Work-Scope 

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Fig. 14. Availability Assessment of 4D CAD

Fig. 14์™€ ๊ฐ™์ด ์—…๋ฌด ๊ตฌ๋ถ„์„ ํ†ตํ•ด ๊ฐ๊ฐ์˜ ์—…๋ฌด๋ฅผ ์„ ํƒํ•˜๊ณ  ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„ ํ‰๊ฐ€ ๋ฌธํ•ญ์— 5์  ์ฒ™๋„๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ™œ์šฉ๋„ ํ‰๊ฐ€์ ์ˆ˜๋ฅผ ์ž…๋ ฅํ•œ๋‹ค.

ํ™œ์šฉ๋„ ์ ์ˆ˜๋Š” 60%๊ฐ€ 4D CAD ๋„์ž… ๋ฐ ์šด์šฉ ๋ฉด์—์„œ ๋ณดํ†ต์ธ ์ˆ˜์ค€์„ ๋‚˜ํƒ€๋‚ด๋ฉฐ, 60%๋ณด๋‹ค ์ด์ƒ์ผ์ˆ˜๋ก ํ™œ์šฉ๋„๊ฐ€ ๋†’๊ณ , ์ดํ•˜์ผ์ˆ˜๋ก ๋‚ฎ๋‹ค. ๋ณธ ์‚ฌ๋ก€์—์„œ๋Š” ์—…๋ฌด ๊ตฌ๋ถ„์„ ์‹œ๊ณต์œผ๋กœ ์„ ํƒํ•˜๊ณ  ํ™œ์šฉ๋„ ๊ฐ’์„ ์ž…๋ ฅํ•˜์˜€๋‹ค.

4.2.2 ๊ฒฐ๊ณผ๊ฒ€ํ† 

5์  ์ฒ™๋„๋ฅผ ํ†ตํ•œ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„ ํ™œ์šฉ๋„ ๊ฐ’ ์ž…๋ ฅ์ด ์™„๋ฃŒ๋˜๋ฉด, Fig. 15์™€ ๊ฐ™์ด 4D CAD ํ™œ์šฉ์„ฑ ํ‰๊ฐ€ ๊ฒฐ๊ณผ๋ฅผ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋‹ค. ๊ฒฐ๊ณผ๋ถ„์„ํ‘œ๋ฅผ ์‚ดํŽด๋ณด๋ฉด, ์—…๋ฌด๊ตฌ๋ถ„์ด ์‹œ๊ณต์—…๋ฌด๋กœ ์„ค์ •๋˜์–ด ์žˆ์œผ๋ฉฐ, ์ด๊ด„ ํ™œ์šฉ๋„ ์ ์ˆ˜๋Š” 50.15%๋กœ 4D CAD ํ™œ์šฉ๋„๋Š” ๋‚ฎ์Œ๊ณผ ๋ณดํ†ต์˜ ์ค‘๊ฐ„ ์ˆ˜์ค€์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ๋ณด๋‹ค ์„ธ๋ฐ€ํ•œ ๋ถ„์„์„ ์œ„ํ•ด์„œ ์„ธ๋ถ€๋ณ„ ํ™œ์šฉ๋„ ๊ฒฐ๊ณผ๋ฅผ ๋ณด๋ฉด, ๊ด€์ ๋ณ„๋กœ๋Š” ๊ณ ๊ฐ๋งŒ์กฑ๋„๊ฐ€ 51.75%, ํˆฌ์ž๋น„์šฉํ™•๋ณด๊ฐ€ 46.76%, ํ”„๋กœ์„ธ์Šค๊ฐ€ 60.89%, ๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ…์ด 42.34%๋กœ ํ”„๋กœ์„ธ์Šค ๊ด€์ ์—์„œ ๊ฐ€์žฅ ๋†’์€ ํ™œ์šฉ๋„๋ฅผ ๊ฐ€์ง€๋ฉฐ, ๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ… ๊ด€์ ์—์„œ ๊ฐ€์žฅ ๋‚ฎ์€ ํ™œ์šฉ๋„๋ฅผ ๊ฐ–๋Š” ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค. 11๊ฐœ์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ๋ณ„ ํ™œ์šฉ๋„ ๋ถ„์„ ๊ฒฐ๊ณผ์—์„œ๋Š” ํ”„๋กœ์„ธ์Šค ๊ด€์ ์˜ ๊ธฐํš๋‹จ๊ณ„์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์ด 71.06%๋กœ ๊ฐ€์žฅ ๋†’๊ณ , ํˆฌ์ž๋น„์šฉํ™•๋ณด ๊ด€์ ์˜ ๊ต์œก ๋ฐ ์žฅ๋น„์ง€์›, ๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ… ๊ด€์ ์˜ ์ •์ฑ…๋ฐ˜์˜ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ์ด 40%๋กœ ๊ฐ€์žฅ ๋‚ฎ๊ฒŒ ๋ถ„์„๋˜์—ˆ์Œ์„ ๋‚˜ํƒ€๋‚ธ๋‹ค. ๋˜ํ•œ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„ ํ™œ์šฉ๋„์— ๋”ฐ๋ฅธ ์ˆœ์œ„๋ฅผ ์‚ดํŽด๋ณด๋ฉด, E.a.1, E.c.1, C.a.2, E.b.1, C.a.1 ์ˆœ์„œ๋กœ ํˆฌ์ž๋น„์šฉํ™•๋ณด ๋ฐ ๊ณ ๊ฐ๋งŒ์กฑ๋„ ๊ด€์ ์—์„œ์˜ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์ด ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋ฐ˜๋ฉด P.c.4, G.b.3, G.a.2, P.c.3 ์ˆœ์„œ๋กœ ํ”„๋กœ์„ธ์Šค, ๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ… ๊ด€์ ์—์„œ์˜ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์ด ๋‚ฎ๊ฒŒ ๋ถ„์„๋˜์—ˆ๋‹ค.

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Fig. 15. Results of Availability Assessment for Case Project 

์ด๊ด„์ ์œผ๋กœ 4D CAD์˜ ์‹ค๋ฌด ๋„์ž…์„ ์œ„ํ•œ ๊ธฐ์—… ๋‚ด๏ฝฅ์™ธ๋ถ€์˜ ํ™˜๊ฒฝ ๊ตฌ์ถ•์ด ์•„์ง ๋ฏธํกํ•œ ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋˜์—ˆ๋‹ค. ๋”ฐ๋ผ์„œ 4D CAD ํ™œ์šฉ์„ฑ์„ ์ €ํ•ด์‹œํ‚ค๋Š” ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œํ•ญ๋ชฉ๋“ค์„ ๋„์ถœํ•˜์—ฌ 4D CAD ์‹ค๋ฌด ๋„์ž…์„ ์œ„ํ•œ ํ™˜๊ฒฝ ๊ฐœ์„  ๋Œ€์ฑ…์„ ์ˆ˜๋ฆฝํ•˜์—ฌ์•ผ ํ•œ๋‹ค.

์šฐ์„  Fig. 15์˜ โ€˜ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ ํ™œ์šฉ๋„ ์ˆœ์œ„โ€™๋ฅผ ํ†ตํ•ด์„œ ํ™œ์šฉ๋„๊ฐ€ ๊ฐ€์žฅ ๋‚ฎ์€ ์„ฑ๊ณผ์ง€ํ‘œ๋ฅผ ๋„์ถœํ•œ๋‹ค. ๊ฐ€์žฅ ๋‚ฎ์€ ํ™œ์šฉ๋„๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ์„ฑ๊ณผ์ง€ํ‘œ๋Š” P.c.4, G.b.3, G.a.2, G.b.2๏ฝฅ๏ฝฅ๏ฝฅ ๋“ฑ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋”ฐ๋ผ์„œ P.c.4 (๋น„์šฉ/์ž์›๊ด€๋ฆฌ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ํ™œ์šฉ๋„), G.b.2 (์ง์›๋“ค์˜ ๊ต์œก ํ›ˆ๋ จ ์‹ค์‹œ ๋นˆ๋„ ์ˆ˜์ค€)๋Š” ๊ต์œก ํ›ˆ๋ จ ์‹ค์‹œ ๋นˆ๋„๋ฅผ ๋†’์ด๋Š” ๋Œ€์ฑ…์„ ๋งˆ๋ จํ•˜๋Š” ๋“ฑ์˜ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ํ™œ์šฉ๋„๋ฅผ ๋†’์ผ ์ˆ˜ ๋ฐฉ๋ฒ•์„ ๊ฐ•๊ตฌํ•˜์—ฌ์•ผ ํ•œ๋‹ค. ๋˜ํ•œ, ํšจ์œจ์ ์ธ ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„ ๋Œ€์ฑ… ์ˆ˜๋ฆฝ์„ ์œ„ํ•œ ํ™œ์šฉ์ ์ˆ˜์˜ ์ฆ๊ฐ€์น˜๋Š” โ€˜5์  ์ฒ™๋„ ์ž…๋ ฅ์น˜ ์ฆ๊ฐ€๋ถ„โ€™์„ ํ†ตํ•ด ๋ถ„์„ํ•  ์ˆ˜ ์žˆ๋‹ค.

โ€˜5์  ์ฒ™๋„ ์ž…๋ ฅ์น˜ ์ฆ๊ฐ€๋ถ„โ€™์—์„œ๋Š” ์„ฑ๊ณผ์ง€ํ‘œ๋ณ„๋กœ 5์  ์ฒ™๋„๋ฅผ ๊ธฐ์ค€์œผ๋กœ ์ž…๋ ฅํ•œ ๊ฐ’์˜ ์ฆ๊ฐ€๋Ÿ‰์— ๋”ฐ๋ฅธ ์ด๊ด„ ํ™œ์šฉ๋„ ์ ์ˆ˜๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. ์ด๋Š” ์ž…๋ ฅ์น˜ ์ฆ๊ฐ€๋ถ„์— ์˜ํ•œ ์ด๊ด„ ํ™œ์šฉ๋„ ์ ์ˆ˜๋“ค ์ค‘ ์ƒ์œ„ 10% ๊ฐ’๋“ค์ด ํ‘œ์‹œ๋จ์œผ๋กœ์จ ์ด๊ด„ ํ™œ์šฉ๋„ ์ ์ˆ˜์— ๊ฐ€์žฅ ๋งŽ์€ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์„ฑ๊ณผ์ง€ํ‘œ๋ฅผ ์šฐ์„ ์ ์œผ๋กœ ํŒŒ์•…ํ•  ์ˆ˜ ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ E.c.1, E.a.1, C.a.2, E.b.1, C.a.1, C.a.3, C.b.2 ์„ฑ๊ณผ์ง€ํ‘œ๊ฐ€ ์ด๊ด„ ํ™œ์šฉ๋„ ๊ฐ’์— ๋งŽ์€ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๊ทธ๋Ÿฌ๋ฏ€๋กœ ์ด๊ด„ ํ™œ์šฉ๋„ ์ ์ˆ˜๋ฅผ ํšจ๊ณผ์ ์œผ๋กœ ํ–ฅ์ƒ์‹œํ‚ค๊ธฐ ์œ„ํ•ด์„œ๋Š” ์šฐ์„ ์ ์œผ๋กœ ์œ„์˜ ์„ฑ๊ณผ์ง€ํ‘œํ•ญ๋ชฉ์— ๋Œ€ํ•œ ๋Œ€์ฑ…์„ ์ˆ˜๋ฆฝํ•˜๋Š” ๊ฒƒ์ด ์œ ๋ฆฌํ•˜๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ AHP๊ธฐ๋ฒ•์˜ ํ•œ๊ณ„๋กœ ์ธํ•ด ํ‰๊ฐ€ ํ•ญ๋ชฉ๋ณ„ ์„ฑ๊ณผ์ง€ํ‘œํ•ญ๋ชฉ ๊ฐœ์ˆ˜๊ฐ€ ๋™์ผํ•˜์ง€ ์•Š์„ ๊ฒฝ์šฐ, ๊ฐ€์ค‘์น˜์˜ ํŽธ์ฐจ๊ฐ€ ๋ฐœ์ƒํ•œ๋‹ค. ๋”ฐ๋ผ์„œ ์„ฑ๊ณผ์ง€ํ‘œํ•ญ๋ชฉ์˜ ๊ฐœ์ˆ˜๊ฐ€ ์ ์€ E.c.1,  E.a.1 ๋“ฑ์ด ๊ฐœ์ˆ˜๊ฐ€ ๋งŽ์€ P.c.4, G.b.3 ๋“ฑ์˜ ์ง€ํ‘œ๋“ค๋ณด๋‹ค ์ƒ๋Œ€์ ์œผ๋กœ ๋†’๊ฒŒ ํ‰๊ฐ€๋˜๊ณ  ์žˆ๋‹ค๋Š” ์ ์„ ๊ณ ๋ คํ•  ํ•„์š”๊ฐ€ ์žˆ๋‹ค.

5. ๊ฒฐ ๋ก 

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๊ฑด์„คํ”„๋กœ์ ํŠธ์— BIM์˜ ์ ๊ทน์ ์ธ ํ™œ์šฉ์„ ์œ ๋„ํ•˜๊ธฐ ์œ„ํ•ด BIM ๋„๊ตฌ์˜ ์‹ค๋ฌด๋„์ž… ์ ํ•ฉ๋„๋ฅผ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋Š” ํ‰๊ฐ€ ์ง€ํ‘œ ๋ฐ ๋ชจํ˜•์„ ์ œ์‹œํ•˜์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ์˜ ๊ฒฐ๊ณผ๋ฅผ ์š”์•ฝํ•˜๋ฉด ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค.

์ฒซ์งธ, ๊ฑด์„ค์ •๋ณดํ™” ๋„๊ตฌ์˜ ์‹ค๋ฌด ๋„์ž… ํ™œ์šฉ์„ฑ ํ‰๊ฐ€๋ฅผ ์œ„ํ•œ ์—ฐ๊ตฌ๋ฒ”์œ„๋ฅผ BIM ๊ธฐ์ˆ  ์ค‘ ์‹ค๋ฌด์ ์œผ๋กœ ๊ฐ€์žฅ ๋งŽ์ด ํ™œ์šฉ๋˜๊ณ  ์žˆ๋Š” 4D CAD๋กœ ํ•œ์ •ํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ  4D CAD์˜ ์‹ค๋ฌด ๋„์ž… ๋ฐ ์šด์šฉ์˜ ํ™œ์šฉ์„ฑ ํ‰๊ฐ€๋ฅผ ์œ„ํ•ด์„œ BSC ์„ฑ๊ณผ๊ด€๋ฆฌ๊ธฐ๋ฒ•์„ ํ™œ์šฉํ•˜์—ฌ ๊ธฐ์—…์˜ ๋‚ด๏ฝฅ์™ธ์  ํ™˜๊ฒฝ์„ ๊ณ ๋ คํ•œ ํ‰๊ฐ€ ์ง€ํ‘œ๋ฅผ ์ œ์‹œํ•˜์˜€๋‹ค. ์ œ์‹œ๋œ ํ‰๊ฐ€ ์ง€ํ‘œ๋Š” ๊ตญ๋‚ด๏ฝฅ์™ธ ๋ฌธํ—Œ ๋ฐ ์‚ฌ๋ก€๋ถ„์„๊ณผ ํ˜„์žฅ ์‹ค๋ฌด์ž ๋ฐ BSC ์ „๋ฌธ๊ฐ€์™€์˜ ํ˜‘์˜์— ์˜ํ•ด ๋„์ถœ๋˜์—ˆ์œผ๋ฏ€๋กœ ์ธ์ž๋“ค์˜ ์‹ ๋ขฐ์„ฑ์ด ํ™•๋ณด๋  ์ˆ˜ ์žˆ๋‹ค.

๋‘˜์งธ, ์„ค๋ฌธ์กฐ์‚ฌ๋ฅผ ํ†ตํ•ด ์„ฑ๊ณผ์ง€ํ‘œ๋“ค ๊ฐ„์˜ ๊ฐ€์ค‘์น˜ ๊ฐ’์„ ์ œ์‹œํ•˜์˜€๋‹ค. ๊ณ ๊ฐ๋งŒ์กฑ๋„์—์„œ๋Š” ๊ฐ๋ฆฌ์—…๋ฌด, ํˆฌ์ž๋น„์šฉ ํ™•๋ณด์—์„œ๋Š” ์‹œ๊ณต์—…๋ฌด, ๊ธฐ์ˆ ์ง€์›๊ต์œก ๋ฐ ์ •์ฑ…์—์„œ๋Š” ์„ค๊ณ„์—…๋ฌด๊ฐ€ ๊ฐ€์žฅ ํฐ ๋น„์ค‘์„ ์ฐจ์ง€ํ•˜์˜€์œผ๋ฉฐ, ํ”„๋กœ์„ธ์Šคํ™œ์šฉ ์ธก๋ฉด์—์„œ๋Š” ์„ธ ๊ฐ€์ง€ ์—…๋ฌด๊ฐ€ ๋น„์Šทํ•œ ์ˆ˜์ค€์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ์ด์™€ ๊ฐ™์ด ์‹œ๊ณต์‚ฌ, ์„ค๊ณ„์‚ฌ, ๊ฐ๋ฆฌ์‚ฌ ์—…๋ฌด๋ณ„๋กœ ์„ฑ๊ณตํ•ต์‹ฌ์š”์ธ๊ณผ ํ•ต์‹ฌ์„ฑ๊ณผ์ง€ํ‘œ๋“ค์˜ ์ค‘์ ๊ด€๋ฆฌ ์šฐ์„ ์ˆœ์œ„๋ฅผ ํŒŒ์•…ํ•จ์œผ๋กœ์„œ ํšจ๊ณผ์ ์œผ๋กœ 4D CAD์˜ ํ™œ์šฉ๋„๋ฅผ ํ‰๊ฐ€ํ•  ์ˆ˜ ์žˆ๋‹ค.

์…‹์งธ, 4D CAD ๋„์ž…์— ๋”ฐ๋ฅธ ํ™œ์šฉ์„ฑ ํ‰๊ฐ€ ๋ชจํ˜•์„ ์ œ์‹œํ•จ์œผ๋กœ์จ ๊ฐ๋ฆฌ, ์„ค๊ณ„, ์‹œ๊ณต ์—…๋ฌด ๊ทธ๋ฆฌ๊ณ  ์ด๋ฅผ ๋ชจ๋‘ ๊ณ ๋ คํ•œ ์ดํ•ฉ ์—…๋ฌด๋ณ„ ๋ฐ ์„ธ๋ถ€ ๊ด€์ ๋“ค์— ๋Œ€ํ•œ ํ™œ์šฉ ์ •๋„๋ฅผ ์ •๋Ÿ‰์ ์ธ ์ˆ˜์น˜๋กœ ํ‰๊ฐ€ํ•˜์˜€๋‹ค. ๋˜ํ•œ ์„ฑ๊ณผ์ง€ํ‘œ์˜ ์šฐ์„ ์ˆœ์œ„ ๋ฐ ์ž…๋ ฅ์น˜ ์ฆ๊ฐ€๋Ÿ‰์— ๋”ฐ๋ฅธ ์ด๊ด„ ํ™œ์šฉ๋„ ์ ์ˆ˜ ๋ณ€ํ™”๋Ÿ‰์„ ๋‚˜ํƒ€๋ƒ„์œผ๋กœ์จ ํšจ์œจ์ ์ธ ์„ฑ๊ณผ์ง€ํ‘œ ๊ด€๋ฆฌ๋ฅผ ๊ฐ€๋Šฅํ•˜๊ฒŒ ํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ๊ฒฐ๊ณผ๋Š” ์‹œ๋‚˜๋ฆฌ์˜ค ์‚ฌ๋ก€ ๋ถ„์„์„ ํ†ตํ•ด, ์ œ์‹œ๋œ ํ‰๊ฐ€ ๋ชจํ˜•์˜ ํƒ€๋‹น์„ฑ์„ ๊ฒ€์ฆํ•˜์˜€๋‹ค.

Acknowledgements

๋ณธ ๋…ผ๋ฌธ์˜ ์ผ๋ถ€๋Š” 2011๋…„๋„ ์ •๋ถ€(๊ต์œก๊ณผํ•™๊ธฐ์ˆ ๋ถ€)์˜ ์žฌ์›์œผ๋กœ ํ•œ๊ตญ์—ฐ๊ตฌ์žฌ๋‹จ์˜ ์ง€์›์„ ๋ฐ›์•„ ์ˆ˜ํ–‰๋œ ์—ฐ๊ตฌ์ž„(No. 2011-0016064).

References

1 
Chung, J. K. and Kim, Y. S. (2012). โ€œAnalysis of core ability of BIM manager.โ€ Journal of the Architectural Institute of Korea, Architectural Institute of Korea, Vol. 28, No. 1, pp. 175-182 (in Korean).Chung, J. K. and Kim, Y. S. (2012). โ€œAnalysis of core ability of BIM manager.โ€ Journal of the Architectural Institute of Korea, Architectural Institute of Korea, Vol. 28, No. 1, pp. 175-182 (in Korean).Google Search
2 
Dawood, N. and Sikka, S. (2009). โ€œDevelopment of 4D based performance indicators in construction industry.โ€ Engineering Construction and Architectural Management, Emerald Group Publishing Limited, Vol. 16, No. 5, pp. 438-458 (in Egland).10.1108/09699980910988357Dawood, N. and Sikka, S. (2009). โ€œDevelopment of 4D based performance indicators in construction industry.โ€ Engineering Construction and Architectural Management, Emerald Group Publishing Limited, Vol. 16, No. 5, pp. 438-458 (in Egland).DOI
3 
Kim, H. S., Moon, H. S., Choi, G. Y., Kim, C. H. and Kang, L. S. (2012). โ€œDevelopment of BIM functions and system for construction project through project life cycle.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 13, No. 2, pp. 11-24 (in Korean).10.6106/KJCEM.2012.13.2.011Kim, H. S., Moon, H. S., Choi, G. Y., Kim, C. H. and Kang, L. S. (2012). โ€œDevelopment of BIM functions and system for construction project through project life cycle.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 13, No. 2, pp. 11-24 (in Korean).DOI
4 
Kim, Y. M., Lee, T. S., Son, J. H. and Lee, S. Y. (2005). โ€œNovel approach in developing owner version KPI and checklist for measurement of construction management performance.โ€ Proceedings of Korean Society of Civil Engineers Annual Conference, Korean Society of Civil Engineers, Vol. 2005, No. 10, pp. 4789-4792 (in Korean).Kim, Y. M., Lee, T. S., Son, J. H. and Lee, S. Y. (2005). โ€œNovel approach in developing owner version KPI and checklist for measurement of construction management performance.โ€ Proceedings of Korean Society of Civil Engineers Annual Conference, Korean Society of Civil Engineers, Vol. 2005, No. 10, pp. 4789-4792 (in Korean).Google Search
5 
Lee, C. J., Lee, G. and Won, J. S. (2009). โ€œAn analysis of the BIM software selection factor.โ€ Journal of the Architectural Institute of Korea, Architectural Institute of Korea, Vol. 25, No. 7, pp. 153-163 (in Korean).Lee, C. J., Lee, G. and Won, J. S. (2009). โ€œAn analysis of the BIM software selection factor.โ€ Journal of the Architectural Institute of Korea, Architectural Institute of Korea, Vol. 25, No. 7, pp. 153-163 (in Korean).Google Search
6 
Leem, C. S., Yu, E. J., Moon, H. J. (2006). โ€œDevelopment of a KPI-based IT evaluation methodology and its application.โ€ Entrue Journal of Information Technology, LGCNS, Vol. 5, No. 2, pp. 21-32 (in Korean).Leem, C. S., Yu, E. J., Moon, H. J. (2006). โ€œDevelopment of a KPI-based IT evaluation methodology and its application.โ€ Entrue Journal of Information Technology, LGCNS, Vol. 5, No. 2, pp. 21-32 (in Korean).Google Search
7 
Lim, J. A. and Kwon, S. W. (2011). โ€œAnalysis of success factors in construction IT convergence : applying AHP.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 12, No. 4, pp. 130-138 (in Korean).10.6106/KJCEM.2011.12.4.130Lim, J. A. and Kwon, S. W. (2011). โ€œAnalysis of success factors in construction IT convergence : applying AHP.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 12, No. 4, pp. 130-138 (in Korean).DOI
8 
Lin, G. and Shen, Q. (2007). โ€œMeasuring the performance of value management studies in construction.โ€ Journal of Management in Engineering, American Society of Civil Engineers, Vol. 23, No. 1, pp. 2-9.10.1061/(ASCE)0742-597X(2007)23:1(2)Lin, G. and Shen, Q. (2007). โ€œMeasuring the performance of value management studies in construction.โ€ Journal of Management in Engineering, American Society of Civil Engineers, Vol. 23, No. 1, pp. 2-9.DOI
9 
Mohamed, S. (2003). โ€œScorecard approach to benchmarking organizational safety culture in construction.โ€ Journal of Construction Engineering & Management, American Society of Civil Engineers, Vol. 129, No. 1, pp. 80-89.10.1061/(ASCE)0733-9364(2003)129:1(80)Mohamed, S. (2003). โ€œScorecard approach to benchmarking organizational safety culture in construction.โ€ Journal of Construction Engineering & Management, American Society of Civil Engineers, Vol. 129, No. 1, pp. 80-89.DOI
10 
Oh, I. J., Lee, J. H. and Lee, C. C. (2006). โ€œBSC perspective of an exploratory study of developing CSF/KPI pool in korean construction industry.โ€ Journal of Korea Society of IT Services, Korea Society of IT Services, Vol. 5, No. 1, pp. 35-46 (in Korean).Oh, I. J., Lee, J. H. and Lee, C. C. (2006). โ€œBSC perspective of an exploratory study of developing CSF/KPI pool in korean construction industry.โ€ Journal of Korea Society of IT Services, Korea Society of IT Services, Vol. 5, No. 1, pp. 35-46 (in Korean).Google Search
11 
Son, J. H., Lee, S. Y., Han, C. H. and Kim, J. O. (2007). โ€œA study on the critical success factors for engineering step on plant project.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 8, No. 6, pp. 227-234 (in Korean).Son, J. H., Lee, S. Y., Han, C. H. and Kim, J. O. (2007). โ€œA study on the critical success factors for engineering step on plant project.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 8, No. 6, pp. 227-234 (in Korean).Google Search
12 
Song, M. R., Yoon, S. W. and Chin, S. Y. (2011). โ€œBSC based measurement of satisfaction degree for based bim construction projets.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 12, No. 4, pp. 117-129 (in Korean).10.6106/KJCEM.2011.12.4.117Song, M. R., Yoon, S. W. and Chin, S. Y. (2011). โ€œBSC based measurement of satisfaction degree for based bim construction projets.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 12, No. 4, pp. 117-129 (in Korean).DOI
13 
Song, S. H., Lee, H. S. and Park, M. S. (2006). โ€œQuality performance management system for construction projects using quality performance indicators.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 7, No. 3, pp. 76-85 (in Korean).Song, S. H., Lee, H. S. and Park, M. S. (2006). โ€œQuality performance management system for construction projects using quality performance indicators.โ€ Korean Journal of Construction Engineering and Management, Korean Institute of Construction Engineering and Management, Vol. 7, No. 3, pp. 76-85 (in Korean).Google Search