Appendix_B.docx

Emsworth L/D, Ohio River Montgomery L/D, Ohio River Concrete Quantities/Delivery Specifications & General Requirements

11 UNDERWATER CONCRETE

1.1 General Information.

The Contractor shall develop/design and test the mix design for the Underwater Concrete and supply the Underwater Concrete per Specification Section 03 37 26 to the job sites located at Emsworth and Montgomery Locks and Dams on the Ohio River. Note, a designated Government representative shall be notified of any or all tests which are to be performed for verification of the mix design. The Government representative reserves the right to observe all processes and tests used in mixture proportion verification.

1.2 Emsworth L/D

The Government will be placing, by a trailer mounted concrete pump, the Underwater Concrete in formwork that is submerged approximately 14 feet in water. The concrete may be pumped approximately 55 feet horizontally and 40 feet vertically down.

Due to access limitations, it is anticipated that once the Underwater Concrete is delivered to the site it will be “dumped” into several one (1) cubic yard concrete buckets which will be hoisted and positioned to the location of the trailer mounted concrete pump. This process will be repeated until the concrete placement for that day is completed. It is anticipated that each concrete truck could be at the site approximately one (1) hour.

1.2.1 Quantities and Delivery Requirements – Underwater Concrete

a. The batch plant shall be within 50 minutes travel time from the delivery site.

b. The actual amount of Underwater Concrete ordered will be between 10 and 20 cubic yards. Each individual delivery load will be a Minimum of 2 cubic yards and Maximum of 8 cubic yards. Estimate between 3 - 5 individual concrete deliveries will be required.

c. The first concrete truck of the day must also deliver to the site 4 bags of Portland Cement, Type 1 to prime the pump truck piping.

d. The concrete deliveries will occur between 25 July – 5 August 2016 during the weekdays. Multiple deliveries during this time period will be required.

e. The contractor will be notified at least 48 hours prior to each required delivery. Multiple concrete deliveries may be requested.

f. Once on site, two hours should be allotted for each delivery unloading.

1.2.2 Delivery site address:

1.3 Montgomery L/D

The Government will be placing, by pumper truck, the Underwater Concrete in formwork that is submerged approximately 18 feet in water. The concrete will be pumped approximately 110 feet horizontally and 29 feet vertically down.

It is anticipated that each concrete truck could be at the site 1-2 hours

1.3.1 Quantities and Delivery Requirements – Underwater Concrete

a. The batch plant shall be within 50 minutes travel time from the delivery site.

b. The actual amount of Underwater Concrete ordered will be between 15 and 30 cubic yards. Each individual delivery load will be a Minimum of 2 cubic yards and Maximum of 8 cubic yards. Estimate between 4 - 6 individual concrete deliveries will be required.

c. The first concrete truck of the day must also deliver to the site 4 bags of Portland Cement, Type 1 to prime the pump truck piping.

d. The concrete deliveries will occur between 30 May and 10 June 2016 during the weekdays. Multiple deliveries during this time period will be required.

e. The contractor will be notified at least 48 hours prior to each required delivery. Multiple concrete deliveries may be requested.

f. Once on site, two hours should be allotted for each delivery unloading.

1.3.2 Delivery site address:

2.1 General Information.

The Contractor shall develop/design and test the mix design for the SCC and supply the SCC per Specification Section 03 31 25 to the job site located at Emsworth and Montgomery Locks and Dams on the Ohio River. Note, a designated Government representative shall be notified of any or all tests which are to be performed for verification of the mix design. The Government representative reserves the right to observe all processes and tests used in mixture proportion verification.

2.2 Emsworth L/D (NOTE: Optional depending on results of underwater concrete placement)

The Government will be placing the SCC, by a trailer mounted concrete pump or by concrete buckets, in formwork that is approximately 24 feet deep. If a trailer mounted concrete pump is utilized, the concrete will be pumped approximately 75 feet horizontally and 10 feet vertically down.

It is anticipated that once the SCC is delivered to the site it will be “dumped” into several one (1) cubic yard concrete buckets which will be hoisted and positioned to the location of a trailer mounted concrete pump or directly to the concrete placement area. This process will be repeated until the concrete placement for that day is completed. It is anticipated that a concrete truck could be at the site approximately one (1) hour.

2.2.1 Quantities and Delivery Requirements - SCC.

a. The batch plant shall be within 50 minutes travel time from the delivery site.

b. The actual amount of SCC Concrete ordered will be between 2 - 5 cubic yards. The delivery load will be a Minimum of 2 cubic yards and Maximum of 5 cubic yards.

c. The placement will occur between 18 July – 12 August 2016.

e. The contractor will be notified at least 48 hours prior to the required delivery.

f. Once on site, two hours should be allotted for each delivery unloading.

2.2.2 Delivery site address:

2.3 Montgomery L/D

The Government will be placing the SCC, by pumper truck, in formwork that is 30 feet deep. The concrete will be pumped approximately 110 feet horizontally and 30 feet vertically down.

It is anticipated that each concrete truck could be at the site 1-2 hours.

2.3.1 Quantities and Delivery Requirements - SCC.

a. The batch plant shall be within 50 minutes travel time from the delivery site.

b. The actual amount of SCC Concrete ordered will be between 45 and 65 cubic yards. Each individual delivery load will be a Minimum of 2 cubic yards and Maximum of 8 cubic yards. For the 1st placement: estimate 2 to 4 each individual concrete deliveries will be required over a two day period. For the 2nd placement: estimate 2 to 4 each individual concrete deliveries will be required over a two day period.

c. The 1st placement will occur between 24 August – 9 September 2016. The 2nd placement will occur between 15 - 30 September 2016.

e. The contractor will be notified at least 24 hours prior to each required delivery. Multiple concrete deliveries may be requested.

f. Once on site, two hours should be allotted for each delivery unloading.

2.3.2 Delivery site address:

3.0 ADDITIONAL QUOTE ITEMS

3.1 Excess Unloading Time.

To include an hourly charge in excess of two hours.

3.2 Small Load Additional Costs.

To include charges for truck small loads below the typical 5 cubic yard per truck minimum; per delivery.

3.3 Fuel Surcharge

Fuel surcharge per truck delivery trip.

4.0 Schedule Summary

(CY)

- - End of Section - -

File: 0257SN.doc jmw, 14MARCH2007 Emsworth & Montgomery L/D: Concrete Quantities/Delivery Specifications & General Requirements