My intention is to do a project and I need to calculate the total cost of the project.

Activity Cost Estimates provide a cost estimate for each work package (a set of individual activities) within the WBS.

• Estimates Basis shows all details on cost estimates and specifies the basic decisions regarding the inclusion or exclusion of indirect project costs.
• Scope Baseline includes the scope statement, the WBS and WBS dictionary allowing determining the project budget in accordance with the cost estimates per work package.
• Project Schedule is a component of the project management plan and it reflects planned start and finish dates for the project activities, milestones, time-frames for individual activities and work packages, and auditing calendars. The information in Project Schedule is used to develop a cost schedule that indicates when the costs are planned to be incurred.
• Procurement Contracts are used to determine the project budget considering all costs incurred and associated with products and services purchased from vendors and suppliers.
• Resource Calendars are used to investigate information on resource assignments and allocation of working time assigned to the resources.

Direct costs include the following:

• Salaries for team members on your project

• Specific materials, supplies, and equipment for your project

• Travel to perform work on your project

• Subcontracts that provide support exclusively to your project

  Indirect costs fall into the following two categories:

• Overhead costs: Costs for products and services for your project that are difficult to subdivide and allocate directly. Examples include employee benefits, office space rent, general supplies, and the costs of furniture, fixtures, and equipment.

• General and administrative costs: Expenditures that keep your organization operational (if your organization doesn’t exist, you can’t perform your project). Labor: Salaries for you and other team members for the hours you work on the brochure

• Materials: The special paper stock for the brochure

• Travel: The costs for driving to investigate firms that may design your brochure cover

• Subcontract: The services of an outside company to design the cover art

  Indirect costs for this project may include the following:

• Employee benefits: Benefits (such as annual, sick, and holiday leave; health and life insurance; and retirement plan contributions) in addition to salary while you and the other team members are working on the brochure

• Rent: The cost of the office space you use when you’re developing the copy for the brochure

• Equipment: The computer you use to compose the copy for the brochure

• Management and administrative salaries: A portion of the salaries of upper managers and staff who perform the administrative duties necessary to keep your organization functioning

I agree with Alex Al Yazouri and  Mohamed Galal. Their replies are well explained but besides I can add the following: a great software program used in Spain to calculate the total cost of the project is Presto ( Presto8.8 and Presto10.22). This program works with the updated price list and in this way it's easy to estimate the project budget

Thank you for your invitation. Several things should be kept in mind while estimating  a project. Market rates of materials, availability and cost of skilled and unskilled labour, Environmental conditions, Escalation, Duration of the Project, lodging the staff, payment to relative government departments.

 bMr. Alex Al Yazouri and Mohamed Galal has explained very well

Agree with Answer added by Mohamed Galal Hussein

I believe Mr. Alex Al Yazouri has explained very well and no comment at this time

I agree with Mr. Alex Al Yazouri answer.

I am fully agree with above answers, but if your company have cost control for previous projects, it can give you more accurate picture to price your B.O.Q.