CHAPTERS
- I. PIPING ABOVE GROUND
- II. PIPELINES
- III. STEEL STRUCTURES
- IV. PROCESS EQUIPMENT
- V. STORAGE TANKS CYLINDRICAL AND SPHEROIDAL
- VI. WELDING AND FLAME CUTTING
- VII. CORROSION PROTECTION
- VIII. THERMAL INSULATION
- IX. ESTIMATES
- X. PIPING ABOVE GROUND ESTIMATE POINTS FOR BUILD-IN ITEMS
- XI. WEIGHT FACTORS
- XII. TECHNICAL CALCULATION MANNER OF DATAS COMPILING
- XIII. MAN HOURS FOR OVERHAULS IN PETROCHEMICAL PLANTS
- XIV. FACTORS AND MAN HOURS FOR PIPING AND STEEL STRUCTURE WORKS IN CALL FOR TENDERS OF "TECHNIP" COMPANY
- XV. APPENDIX
TECHNICAL CALCULATION AND ESTIMATOR'S MAN-HOUR MANUAL
by: Marko Bulic
ESTIMATES
- 1. ESTIMATE OF SCAFFOLDS
- 1. ESTIMATES OF SCAFFOLDING WHEN CONTRACTED TO A SPECIALIST FIRM
- 2. ESTIMATE OF SCAFFOLDING WHEN DONE BY AN ERECTION COMPANY
- 2. ESTIMATE OF WELDING ROD CONSUMPTION AND ADDITIONAL WELDING MATERIAL
- 1. PIPING
- 2. STEEL STRUCTURES
- 3. CYLINDRICAL STORAGE TANKS
- 4. EQUIPMENT IN PETROCHEMICAL INDUSTRY
- 3. ESTIMATE OF CONSUMPTION OF TECHNICAL GAS AND GRINDING PLATES
- 4. ESTIMATE OF ELECTRICITY CONSUMPTION
- 5. ESTIMATE OF CONSUMPTION OF FUEL AND LUBRICANT
- 1. FUEL CONSUMPTION
- 2. LUBRICANT CONSUMPTION
- 6. TOOL COST ESTIMATE AT THE JOB SITE
- 7. ESTIMATE OF SAFETY AT WORK MEANS
- 8. ESTIMATE OF ERECTION TIME
- 9. SELECTION OF HOISTING MACHINERY
- 9.1 SELECTION OF THE LARGEST CRANE
- 9.2 PIPING IN PLANTS
- 9.3 PIPING BETWEEN PLANTS
- 9.4 PIPELINES
- 9.5 ERECTION OF STEEL STRUCTURE
- 9.6 INSTALLATION OF PROCESS EQUIPMENT
- 9.7 ERECTION OF CYLINDRICAL STORAGE TANKS
- 10. UNLOADING, HANDLING AND SORTING OF THE MATERIAL
- 10.1 MATERIAL FOR PIPING
- 10.2 STEEL STRUCTURE
- 10.3 PROCESS EQUIPMENT
- 10.4 CYLINDRICAL STORAGE TANKS
- 11. TEMPORARY WORKS, SPACE REQUIRED AND CONNECTIONS AT THE SITE
- 1. TEMPORARY WORKS
- 2. AREA NEEDED
- 3. CONNECTIONS NEEDED
- 12. ESTIMATE OF THE NUMBER OF WELDS AND RADIOGRAMS FOR PIPING
- 1. ESTIMATE OF BUTTWELDS BASED ON A LIST OF MATERIAL - PIPES, FITTINGS AND FLANGES
- 2. ESTIMATE OF BUTTWELDS BASED ON A LIST OF MATERIAL - FITTINGS AND FLANGES ONLY
- 3. ESTIMATE OF BUTTWELDS BASED ON THE PIPING LENGTHS
- 4. ESTIMATE OF TOTAL WELDS (ALL TYPES)
- 5. ESTIMATE OF RADIOGRAMS ON THE PIPING
1. ESTIMATE OF SCAFFOLDS
Quick estimates of scaffolding and the scaffolds are very difficult to make and not reliable. Estimators usually do not have the drawings, the dimensions and what is most important they do not have enough time to perform a proper calculation. Therefore, they have to make quick estimates of the quantities starting first with a decision on who is going to undertake the scaffolding. Will they subcontract this job to a specialist firm or do the scaffolding themselves? It is also necessary to see who will use the scaffolds. Will they be used for erection only, or for painting and insulation works as well? If there are several users, the rental period is longer but in that case the expenses can be shared.
