What is the difference between the direct and indirect cost of the construction project?

Direct Costs: These costs are directly attributable to the work on the project. Examples are team travel, team wages, recognition, and costs of material used on the project etc.

Indirect Costs: Indirect costs are overhead items or costs incurred for the benefit of more than one project. Examples include taxes, fringe benefits, head office administrative, insurance, temporary facilities and janitorial services etc..

Direct cost:- All costs pertinent to a particular cost object, such as the cost of basic raw materials, packaging materials.

Indirect cost:- All costs which are not attributable to a specific cost object, such as indirect material or indirect overheads  

Simple Direct cost is the cost calculated and fixed, means those things that are visible already during the time of Planning and costing. While indirect is the items unforeseen items and or works that were considered as part of miscellaneous operational expenses and other items pop up during the time of project executions. 

Indirect costs are costs that are not directly accountable to a cost object (such as a particular project, facility, function or product). Indirect costs may be either fixed or variable. ... But some overhead costs can be directly attributed to a project and are direct costs.