Question
New Electrical Ductbank Facts -An electrical duct bank is required for the utility connections approximately 2000 linear feet from a primary source to a building.
New Electrical Ductbank
- Facts -An electrical duct bank is required for the utility connections approximately 2000 linear feet from a primary source to a building.
- The duct bank is 3wide x 5deep and requires concrete to 3 from the bottom of the trench.
- You will perform excavation/backfill, concrete and supervision
- The electrician gives you a bid of $105,000 for all conduit, wire and terminations
- It will take the electrician one day to install 250 feet of duct / conduit set once the excavation is completed. All wire can be installed and terminated in one week after all other work is completed.
- There is 6 of asphalt existing in this area. You must saw cut, demo and replace
- You can reuse the excavated soil
- Excess soil will be exported per the unit price ( complete cost)
- Do not consider bulking of soil
- Use one crew for excavation, shoring and backfill
- You may backfill the day after the concrete is placed
- Production / Installation Rates
Electrical Conduit | 250 | lf/day |
Excavation | 528 | cy/day |
Backfill - Compacted | 60 | cy/day |
Concrete | 140 | cy/day |
As part of you calculations use the following unit prices:
- Excavate $8.50 /cy
- Export /Haul $5.25/cy dont use bulking factors
- Shoring /Forming $1.75 /sfca (SQUARE FOOT CONTACT AREA) for the entire trench, both sides
- Place Concrete $195.00/cy
- Compacted Backfill $25.00 /cy
- Saw cut asphalt $2,50 per foot. Remove and dispose of asphalt at $2.25 square foot
- Replace asphalt at $28.00 per square yard
- Include subcontractor costs Electrical
- General conditions based on duration
- Include supervisor at $60 per hour
- A pick-up at $250 per week
- Safety PPE at $25 per day
- Porta Potty at $200 per month
- Trash pick-up $100 per day
- Add home office overhead and profit of 10%
- Add a bond cost of 2.5%
- Deliverables
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- Provide a cost estimate on the bid form
- Provide a schedule Excel or any computer program.
- Paper
What is your plan to maximize productivity? Write a one page paper, 12 point type size print double spaced, detailing your plan to measure and maximize productivity on this project.
Assignment #2 Bid Form
Name_________________________________
Company Name _________________________________
Total Bid_____________________________________
Duration___________________ work days
Provide paper, estimate and schedule with your submittal.
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