# Factors of the Technology Acceptance Model for Construction IT
## 3 Research Model and Hypotheses
### Analysis Results on TAM Variables in Construction IT
#### 4.3.3. Detail Research Results for Construction IT  
In this study, we used the first survey to verify our hypotheses about the TAM and construction IT. Based on these results, we classified construction IT into five categories (scheduling programs, design programs, wireless technology and IT communications (ITC), KMS, and PMIS) and performed a second survey to determine the different influences individuals have on the software and systems used in the construction industry and user errors. However, wireless technology and ITC users were excluded from the survey. The survey was not easy because the majority of users are in specific fields.  
From the second survey, we found that Nex-Pert (Project management program, South Korea), Sure-Track, Microsoft Project, and Primavera Project Planner were the most used scheduling programs. They were often used for progress schedules, preceding process control, process cost analysis, and business distribution. The results show that the schedule programs were used because the companies provided them (the most common answer), they were considered useful, and they were required to be used by contractors. Second, we investigated the design program used most in the construction industry--Auto CAD--which is used for producing drawings, revisions, material calculations, estimates, and checking the detailed size and availability when necessary at a site. We found that Auto CAD is easy to use, useful, often used, and convenient. However, it is also not compatible with other programs, such as scheduling programs, which have to be fixed for Auto CAD to be utilized in more fields. Third, we investigated what purpose KMS serve in the construction industry and found that they are used for sharing data with people in other places and collecting and researching the necessary data for business use. KMS are reputed to be useful in that companies provide them. We found that respondents placed high value on the usefulness and convenience of KMS, which were also evaluated as being easy to use. However, KMS have not yet spread throughout the construction industry and are short on the various types of information as well. Fourth, we investigated what purpose PMIS serve in the construction industry and assessed users' complaints about PMIS. We determined that PMIS are used to check the percentage of work completed for each field, to share data between the contractor and site, to utilize data such as portal systems, to provide defective sample control, as a security information integration system, and for the receipt or dispatch of documents. We found that the reason that PMIS has low values for compatibility is that the design programs and scheduling programs explained above are not compatible with PMIS. Table 3 lists the complaints.  
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Form of Construction IT** & & **Complaints** \\ \hline \multirow{8}{*}{Scheduling Programs} & \multirow{2}{*}{English edition only} & \multirow{2}{*}{Upgrade problem} \\  & & \\ \cline{1-1}  & & Utilization problem for various functions \\ \cline{1-1}  & & Inability to detail marking for sums or each process \\ \cline{1-1}  & & Less compatibility with other programs \\ \cline{1-1}  & & Lack of manuals \\ \cline{1-1}  & & Inapplicable to various construction situations \\ \cline{1-1}  & & Lack of education within companies \\ \cline{1-1}  & & Lower usage frequency for projects due to low introduction ratio in Korea \\ \cline{1-1}  & & Difficulties based on lack of skill with the program in the case of an urgent overseas construction project \\ \cline{1-1}  & & Inconvenience of inputting many resources \\ \hline \hline \end{tabular}
\end{table}
Table 3: Subject Matter of the Complaints.