Within cost accounting for construction projects, which of the following are standard elements of cost recognized in job costing and estimate build-ups?

Introduction / Context:
Breaking down project costs into elements clarifies pricing, control, and reporting. Standard cost elements include direct material (consumables and permanent works), direct labour (on-site workforce), and overheads (indirect costs such as supervision and site facilities). Recognizing all three ensures complete capture of project expenditure.

Given Data / Assumptions:

• Direct materials: cement, steel, aggregates, fixtures, etc.
• Direct labour: masons, carpenters, operators, helpers.
• Overheads: plant, temporary works, supervision, insurance, utilities.

Concept / Approach:

Estimates and cost codes are structured so each pay item’s unit rate is the sum of material, labour, equipment/overhead, and markups. Omitting any element underprices the job and undermines cost control.

Step-by-Step Solution:

Verification / Alternative check:

Standard estimating manuals and WBS structures show these elements explicitly in rate build-ups and earned value tracking.

Why Other Options Are Wrong:

• Choosing any single element ignores the rest of the real project costs.
• 'None of these' is contrary to basic cost accounting.

Common Pitfalls:

• Misclassifying site overheads as general overheads, leading to under-recovery.
• Excluding wastage and productivity losses from direct cost calculations.

Final Answer:

All of these