Hello everyone,
Our construction project is progressing, and now that we have the soil report and the building permit / planning permission has been submitted, we have received an initial quote for the earthworks (foundation slab). Additional quotes have been requested.
Despite extensive online research, we are unsure whether this is a good offer or if any important items might be missing. It would be great to receive some feedback to better assess it. The listed unit prices are net amounts.
1. Site setup
€450 (flat rate)
2. Profile-appropriate soil loosening – 75m3 (99 cubic yards)
€337.50 (unit price €4.50)
3. Removal and proper disposal of soil class Z0 – 150 tons (165 tons)
€1,854 (unit price €12.30)
4. Contingency item: Removal and proper disposal of soil class Z1.1 – 1 ton (1.1 tons)
€23.80
5. Creation of a soil planum on the base – 150m2 (1,615 square feet)
€270 (unit price €1.80)
6. Delivery and installation of a sub-base layer of HSK 0-45 – 75m3 (99 cubic yards)
€2,970 (unit price €39.60)
7. Creation of a fine planum – 150m3 (196 cubic yards)
€270 (€1.80)
8. Delivery/installation of an inspection shaft up to 2.00m (6.6 feet) depth including earthworks
€950 (flat rate)
Total: €8,440.08 (€7,092.50 net)
Final billing will be based on actual measurements and weight tickets. All additional work can only be charged based on actual effort.
This last point makes us a bit cautious. Of course, we understand that the m2 and m3 figures are only estimates from the plans and may vary, but what kind of additional work might this refer to, and what further costs could we potentially face?
Thank you very much in advance for your help.
Best regards and have a nice Sunday!
Our construction project is progressing, and now that we have the soil report and the building permit / planning permission has been submitted, we have received an initial quote for the earthworks (foundation slab). Additional quotes have been requested.
Despite extensive online research, we are unsure whether this is a good offer or if any important items might be missing. It would be great to receive some feedback to better assess it. The listed unit prices are net amounts.
1. Site setup
€450 (flat rate)
2. Profile-appropriate soil loosening – 75m3 (99 cubic yards)
€337.50 (unit price €4.50)
3. Removal and proper disposal of soil class Z0 – 150 tons (165 tons)
€1,854 (unit price €12.30)
4. Contingency item: Removal and proper disposal of soil class Z1.1 – 1 ton (1.1 tons)
€23.80
5. Creation of a soil planum on the base – 150m2 (1,615 square feet)
€270 (unit price €1.80)
6. Delivery and installation of a sub-base layer of HSK 0-45 – 75m3 (99 cubic yards)
€2,970 (unit price €39.60)
7. Creation of a fine planum – 150m3 (196 cubic yards)
€270 (€1.80)
8. Delivery/installation of an inspection shaft up to 2.00m (6.6 feet) depth including earthworks
€950 (flat rate)
Total: €8,440.08 (€7,092.50 net)
Final billing will be based on actual measurements and weight tickets. All additional work can only be charged based on actual effort.
This last point makes us a bit cautious. Of course, we understand that the m2 and m3 figures are only estimates from the plans and may vary, but what kind of additional work might this refer to, and what further costs could we potentially face?
Thank you very much in advance for your help.
Best regards and have a nice Sunday!
M
Marvinius11 Jun 2017 13:2475m3 (cubic meters) of soil will be removed. Now take the length L and width B of your house and add 0.6m (60cm / 24 inches) to each for the working space (minimum). Then you should be able to calculate the excavation depth T: T = 75m3 / ((L + 0.6)m * (B + 0.6)m). If this T is within the backfill height, then you are dealing with the more expensive option.
M
Marvinius11 Jun 2017 13:26You cannot use the material entirely for backfilling. However, you could partially mix it with the backfill sand or create a raised level in the garden.
M
Marvinius11 Jun 2017 13:32The specification is, of course, only an initial guideline. Have the company confirm how deep they intend to excavate. And to be on the safe side, plan for the more expensive option.
E
Edwina051111 Jun 2017 14:31All right... thank you very much for the detailed explanation.