The 'Lang factor' represents the proportion of overall capital investment relative to the delivered price of primary equipment. For a solid-fluid processing plant, what is the typical range of the Lang factor for fixed capital investment ?
Show answer Hide answer
Answer: C. 4.2 to 4.4
Explanation
The Lang factor multiplies delivered equipment costs to estimate total fixed capital investment rapidly. Solid-fluid processing plants require complex piping, instrumentation, and structural supports. Empirical industrial data indicates that the Lang factor for solid-fluid plants ranges from four point two to four point four. Hans Lang introduced empirical multiplication factors to simplify preliminary chemical plant cost estimation. Plant types are categorized as solid processing, fluid processing, or solid-fluid processing facilities. Fixed capital investment estimates derived using Lang factors provide useful early-stage project budgets.
Cost estimation engineers use Lang factors during conceptual design phases before detailed engineering begins. Inaccurate equipment cost scaling can lead to severe budget errors in chemical plant construction proposals. Project developers refine preliminary Lang factor estimates as engineering design details become available. Option A represents a lower Lang factor typically applicable to solid processing chemical plants. Option B corresponds to fluid processing plants which require moderate piping and structural investments. Option D overestimates fixed capital investment beyond standard solid-fluid processing plant multipliers.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. In a chemical industrial facility, the overall cost of a product consists of the manufacturing expenses alongside the__________________?
Show answer Hide answer
Answer: A. General expenses
Total product cost in a chemical manufacturing enterprise includes both manufacturing and general expenses. Manufacturing expenses cover direct production, fixed charges, and plant overhead costs. Adding general administ...
Q2. For a standard chemical plant, what proportion of the total cost is typically represented by electrical installation expenses ____________________?
Show answer Hide answer
Answer: C. Either A. or B.
Electrical installation expenses in chemical plants are commonly estimated either as ten to fifteen percent of purchased equipment cost. Alternatively, these same electrical installation expenses can be reliably estimate...
Q3. Which electric power generation technology incurs the lowest operating expenses ?
Show answer Hide answer
Answer: C. Hydroelectric
Hydroelectric power generation harnesses flowing river water without requiring costly fossil fuel inputs. Eliminating continuous fuel purchases results in the lowest operating and maintenance expenses. Hydroelectric faci...
Q4. The total manufacturing expenditure for a chemical enterprise does not account for the____________________?
Show answer Hide answer
Answer: D. Administrative expenses
Total manufacturing expenses cover direct production costs, fixed charges, and plant overhead expenses. Administrative expenses represent general corporate overhead rather than direct plant manufacturing costs. Excluding...
Q5. The operating earnings of a chemical processing facility are calculated as___________________?
Show answer Hide answer
Answer: A. Profit before interest and tax i.e., net profit + interest + tax
Operating earnings represent profits generated before the company deducts interest expenses and income taxes. Calculating this metric requires taking the net profit and adding back both interest and tax payments. This ap...
Q6. When applying the declining balance technique for depreciation computations, the _____________________?
Show answer Hide answer
Answer: C. Annual depreciation is the fixed percentage of the property value at the beginning of the
Declining balance depreciation applies a constant depreciation percentage rate to remaining book value. Annual depreciation expense decreases each year because the starting book value continuously declines. Calculating d...