Major Factors Causing Delay in the Delivery of Manufacturing and Building Projects in Saudi Arabia

There have been many studies done on the causes of delay on construction projects and building projects all around the world. They use different methods, on different geographical areas, and they come up with different results. There are, however, few studies on industrial and building projects. This paper focuses on industrial/manufacturing projects in Saudi Arabia. The aim of this paper is to identify the major causes of delay in the manufacturing projects in Saudi Arabia. The top causes of delay have been identified through a literature survey and interviews with experts from the industrial field in Saudi Arabia. Twenty-two factors have been identified and listed in a survey that was distributed to professionals in the same field. Two categorizations were made: the first is based on the impact of the cause, and the second is based on the frequency of occurrence of the identified cause. It has been found that the top five impacted causes of delay in the delivery of industrial projects in Saudi Arabia are: difficulties in financing project by contractor/manufacturer, late procurement of materials, late delivery of materials, delay in progress payments, and delay in approving design documents, respectively. In terms of frequency, the top five identified causes are: delay in progress payments, difficulties in financing project by contractor/manufacturer, slowness in decision making, late procurement of materials, and delay in approving design documents, respectively. The diversity of the participants is an important point; therefore, the respondents were from different job positions (management, engineering, etc.), and different categories (contractor, owner, manufacturer, consultant, etc.). It is worth noting that this paper serves not only as an authentic study of the causes of delay in the delivery of industrial projects in Saudi Arabia which is a field that is not widely covered, but also as a fresh paper that gives an indication of the changes that happen to the business over time as compared to previous work.


Introduction
The main objective of the project management team is to complete the project on time, within its budget, and according to the required quality/specifications.The literature review indicates that many factors can influence the project objectives.Those factors may vary in importance based on the perspective of the owner, contractor, sub-contractor, and consultants.The project also needs to be completed under a safe environment, without any litigation, and as per the authorities' regulations.Construction projects are often the focal point when project planning, scheduling and management is considered.Nevertheless, it must be noted that every construction project requires materials/products, and these materials/products go through a manufacturing process.A delay in the delivery of some materials/products, may cause an overall delay in the project.For instance, if an electrical substation is to be constructed, equipped, and commissioned as a lump-sum/turnkey project, an essential part of the project completion and delivery would be the manufacturing of the electrical products that are to be installed in the substation.This example, in fact, is the main point of this research paper.
From the perspective of the original equipment manufacturer (OEM), and in addition to the project main objectives, the profit must be maximized which adds to the complexity of the project's overall delivery.For example, the bulk material manufacturing is going to affect the price of the product and thus the profit, an OEM would like to manufacture more units of the same type of multiple projects at one time.This, however, is constrained with the project's deadlines, sizes, etc.
This paper investigates assess, analyze, and evaluate the major causes of delay in the delivery of industrial projects in Saudi Arabia.In addition, the paper covers a wide range of published papers that discuss the causes of delay in projects.The literature survey lists the references in a chronological order.

Methodology
Causes of delay in construction projects is an important function that has got the attention of both researchers and field experts.Therefore, it was important to identify those causes of delay in order to avoid those causes, have a solution for them in case they happen, and eventually save time and money.It is essential to tie the causes of delay with the geographical location as by experience, it is found that different locations have different regulations, practice, authorities, etc.Additionally, the field of study is also important as for example, most studies focus on the construction and building projects but less focus on the industrial/manufacturing projects.As the field of work changes, different requirements, regulations may well change, and a completely different behavior might be encountered.This paper focuses on the industrial/manufacturing projects in Saudi Arabia.The paper focuses on the causes of delay in such projects.The research methodology followed to achieve the above-stated objectives involve a sequence of steps.It includes the following: 1.
Conducting a comprehensive literature review to identify the factors that cause schedule delays during the construction phase of industrial/manufacturing projects.

2.
Determining unreported factors based on interviewing the local experts who are involved in the construction of industrial/manufacturing projects in Saudi Arabia.

3.
Combining the identified factors from the literature with that obtained from interviewing project engineers/managers.

4.
Designing and developing a questionnaire survey to be used for collecting feedback from experts regarding the importance of the identified factors.

5.
Conducting a pilot study with experts to assess the identified factors and to evaluate the developed questionnaire survey before sending it to the targeted professionals.

6.
Distributing the questionnaire survey to the population of 106 professionals working in this class of projects in the eastern province of Saudi Arabia.

7.
Analyzing the data received using the statistical analysis method to identify the level of importance for the identified factors.8.
Obtaining the important index value and the rank of each factor.9.
Drawing conclusions and recommendations based on the obtained results.

Literature Review
The main goal of the project management team is to complete the project successfully.This includes completing the project on time, within its budget, and according to the required quality/specifications.Completing the project on time requires the identification of causes that may lead to delay during construction phase.The literature reveals that many studies have been carried out to identify the causes of the delay of construction projects in general.However, very limited research concerning the construction delay of the delivery of industrial/manufacturing projects.Causes of delay and/or cost overruns may vary based on the geographic location where the project is constructing.In Turkey, for example, where the investment in construction adds up to 50% of the total investments, some major causes of delay were identified to be a lack of cash flow, resources, design delay, and changes in the order, which happen frequently [1].Not only the causes of a delay are important, but so, too, are the factors that suppress the delay.That is what was carried out in [2] in which the top factors for a successful project completion were identified.
In Nigeria the main cause of project cost overruns was identified to be related to the shortage of materials and the deficiency in the financing, and a recommendation to overcome that was to reduce the mistake of handling human resources and materials [3].Due to the lack of research in identifying and evaluating the causes of delay and their effects on industrial/manufacturing projects, the literature shows that some researchers have used game theory and transaction cost economics to address this issue [4,5].A study in Nigeria [6] found that the main reasons for cost overrun in construction projects are: fluctuations in costs of material, and manpower in addition to the delay of invoice payments.It is revealed that to finish a project successfully, multiple factors and sub-factors need to be examined.That can be done with the help of techniques such as the resource-based view (RBV).The advantages of the resources based view (RBV) were presented in [7,8].An important advantage of the RBV is that it allows utilization of the right resources at the right place with the best use of capabilities [9,10] In [11], multiple reasons for cost and time overrun is the lack of material and the deficiency in payments.In the study, it was recommended that solution must be carried out on an organizational level as well as a governmental and international level for developing.In [12,13].Each factor that contributes to the delay was given a numerical value through the relative importance index (RII).Looking at the studies based on the geographical location, it is noticed that only a few studies examine the causes of delay in Europe (e.g., [14][15][16][17]).The majority of studies into the causes and effects of delay in construction projects focus on identifying these causes and effects, but they do not really dive into the dependency between these factors [18][19][20].

Causes of Delay Identification
In this section, the identified causes of delay based on points 1-4 in the methodology have been listed down in a tabulated form in Table 1 to be compact, and a brief about each point is provided.It is worth noting that out of 29 causes, the experts have decided to eliminate seven and not to add any.Therefore, 22 causes of delay have been identified.It is also to be noted that the factors are mentioned in more than one reference and since more than 100 references are used, only one reference will be mentioned for each factor.

Survey Design and Statistics
The survey has been designed online and distributed among professionals in the field of focus of the paper.It first collects general but important information about the respondents including their job level, years of experience and the category of their organization.After that, the 22 points were listed, and the respondent was asked to choose an impact level and a frequency level for each point.The levels were (very low, low, moderate, high, and very high).The survey was intended to be as clear and direct as possible to encourage the respondents to complete it.The impact level shows how badly this factor affects the project and the frequency level shows how often this factor is encountered.A sample of the survey is attached into the appendix.
The three statistical models used to analyze the data are the relative importance index (RII), and the frequency adjusted importance index (FAII).
The RII is an easy but effective tool in analyzing the data.It can be understood by everyone and it helps ranking the many factors listed in this paper.The RII equation is: where: -RII is the relative importance index used to rank the factors obtained based on importance.Its value varies from 0-1.The higher the value is, the higher the rank/importance of the factor is. -SR is the factor scale.The scale used here is 1-5 and, thus, SR is the scale inputted by the respondent for the impact/importance.-W is the maximum value of the scale which is 5 here since the scale is from 1-5. -N is the number of respondents to the survey.
Equation (1) considers the importance only but not the frequency.To consider the frequency, the frequency index (FI) is used.It is calculated in a similar way to the RII as follows: where: -FI is the frequency index used to rank the factors obtained based on frequency.Its value varies from 0 to 1.The higher the value is, the higher the rank/frequency of the factor is. -SR is the factor scale.The scale used here is 1 to 5 and thus, SR is the scale inputted by the respondent for the frequency.-W is the maximum value of the scale which is 5 here since the scale is from 1-5. -N is the number of respondents to the survey.
To combine the two indices in one, the RII and FI are combined into the FAII, which is a simple multiplication combination of the aforementioned factors: FAII = RII × FI × 100 (3)

Results and Discussion
The survey respondents of this survey were chosen to be professional from the field of different job levels, and different experience levels as well.All the respondents are university graduates.The manufactures/contractors represent 80.0% of the respondents, the consultants are 16.7% and the owners represent 3.3%.The Engineers sum up to 46.7% of the respondents while the managers represent 40% and 13.3% lie in other categories.In terms of years of experience, 10% of the respondents had 1-5 years of experience, 10% had 5-10 years of experience, 26.7% had 10-15 years of experience, and 53.3% had more than 15 years of experience.
The result of the survey has been listed in Table 2 to be in a compact form.The table shows the identified 22 factors, their average, standard deviation (SD), RII, and rank based on the RII.The average and SD are based on the impact values.
Table 3 shows the 22 factors ranked based on FI and based on FAII.Additionally, the average and SD are shown based on the frequency values.It has been found that the top three causes of delay in the delivery of industrial projects in Saudi Arabia in terms of impact are: difficulties in financing project by contractor/manufacturer, late procurement of materials, and late delivery of materials, respectively.In terms of frequency, the top three causes have been identified to be: delay in progress payments, difficulties in financing project by contractor/manufacturer, and slowness in decision making, respectively.Using the FAII helps combine both the frequency and importance in one rating and the result of the FAII ranking is similar to the FI rating for the top three factors.It can be noticed that difficulties in financing project by contractor/manufacturer lies in both the highest impact and highest frequency categories.For manufacturing processes, the availability of material is a key.Additionally, to have the material, money must be available and any lack in finance from the owner side or the contractor side will surely lead to delays in getting the material and, thus, delay in the delivery of the project.Therefore, it is concluded that the results are related.
To overcome the issues related to the materials and their availability or purchase, supply chain management techniques may be used.There are several techniques that could assist in solving this issue such as just in time where the material is purchased and planned to arrive at the factory just at the right time when it is supposed to be.That will help in both making sure that the material will be available when needed and adjusting the cash flow to avoid having lack of money at some point of the project which could delay the next batch of the material that are to be ordered.In addition, the owner must consider his ability to finance the project as part of the scheduling of the project.In other words, finance-based scheduling is to be applied involving both the contractor's and owner's financial capability.Lastly, the slowness in decision making by the owner could be resolved by tracking the actual cause of this delay.It is possible that this slowness is because of not using an automated system that has built in reminder and notification function.It could also be due to an archaic system approach which shall be revised.
In addition to the surveyed causes of delay, some of the professionals who submitted the survey have added extra causes they believe are worth considering.This is because at the end of the survey, there was an option for the respondents to add more causes if they feel they are worth considering too.Those extra reasons have been summarized in Table 4.It must be highlighted that the responses in Table 4 have been listed as given by the respondents in the survey without any processing.The respondents might have stated extra causes of delay that are similar to the ones in the survey.They also might have not stated the impact or frequency at some points.However, a very noticeable result out of these inputs is that the majority of the respondents who decided to add extra causes of delay agree on a new cause of delay.This cause of delay is the port customs.Though only nine respondents have decided to add more factors to what was in the survey, most of them agreed on the port customs clearance delay as an extra factor is worth paying attention to.Probably, adding this cause to future surveys will reveal that it is one of the most important causes of delay in terms of impact and frequency.It is a known fact that when a manufacturing process is involved, material is required usually from both local and foreign suppliers.That is especially the case when the manufacturing process is a part of a big project delivery which is the scope of this paper.And if the port customs cause a delay, then, that surely will lead to a delay in the availability of the material.Customs delay of the material could lead to the top causes of delay that have been identified in this research which involve material related causes.This interrelation between the identified causes is considered as one of the key findings of this research.That could help the project managers track the chain of causes of delay and tackle the actual and most important cause of delay.Eventually, this highlights the importance of the choice of this research for the industrial sector as a focused part of the construction one.Many projects that involve construction and building require a part of manufacturing and thus, it is important to add focus on the manufacturing/industrial projects as well.
Since most respondents are manufacturers, they might be biased towards selecting the causes of delay that are not related to them.Thus, comparing the type of respondent with the category of the top causes of delay might give better insights.Since most of the respondents are manufacturers, they will be the only respondent type studied.By looking at the top five causes of delay in terms of both frequency and impact, 4 of them are common.This results in a total of six factors that cause delays in terms of both impact and frequency.The first cause is the difficulties in financing project by contractor/manufacturer.It should be noted that this cause can lie under the manufacturer category or the contractor category.There is a high chance the manufacturers have selected it as a cause that lies under the contractor category.The same analysis applies to the second factor which is late procurement of materials.The third factor which is the late delivery of materials is a material related cause and, thus, it is related to the supplier who supplies the customer, as well as the shipper and customs.The last three factors considered are: delay in progress payments, delay in approving design documents, and slowness in decision making.They are all owner-related factors.

Conclusions
In conclusion, a literature survey has been carried out to make an initial identification of the causes of delay in projects in general.The papers reviewed cover a wide geographical area of study.After that, the top causes of delay from the literature and from meetings held with experts were listed.These factors have been put in a designed survey that was distributed to professionals and responses to collect feedback.Different professionals from different positions and organizations were targeted to guarantee the diversity of the responses which helps giving a general and better view of the data.The collected responses were analyzed using the average, standard deviation, relative importance index, frequency index, and the frequency adjusted importance index.The output of the mathematical analyses has revealed that the top causes of delay in terms of frequency and importance are difficulties in financing project by contractor/manufacturer, late procurement of materials, late delivery of materials, delay in progress payments, and slowness in decision-making.This paper has focused on industrial projects where manufacturing process is involved and that is a point of research that is not heavily revealed in the literature.Most studies focus on the causes of delay in the construction and building projects.That is another key point that makes this research more valuable.The port customs can be assessed in future work as an important cause of delay.For future work, the type of manufacturing process that is tied with a construction process can be evaluated.Mechanical products manufacturers might be different from electrical products manufacturers and they might be different from raw material manufacturers.Lastly, the survey can try to reach a point at which the percentage of the respondents of each category is equal.

Table 1 .
The identified causes of delay.

Table 2 .
The identified causes of delay, their average, SD, and RII.

Table 3 .
The identified causes of delay, their average, SD, and RII.

Table 4 .
Extra Factors added through the survey.