Andre7
Marine/Ocean
- Feb 21, 2008
- 1
I am doing an estimate to install a water intake pipe about 3/4 mile into the sea. The sea has a slope from shore line to about 25 feet deep 3/4 mile from the shore.
The excavation needs to be about 22 feet deep at the shore line and will follow the slope of the sea floor. The geotechnical composition is about 50% sand and 50% hard sedimentary rock. We can blast.
I am doing an estimate to install a water intake pipe about 3/4 mile into the sea. The sea has a slope from shore line to about 25 feet deep 3/4 mile from the shore.
The excavation needs to be about 22 feet deep at the shore line and will follow the slope of the sea floor. The geotechnical composition is about 50% sand and 50% hard sedimentary rock. We can blast. At the end of the pipe we are working in 25 deep seas and dredging/excavating from the sea floor about 22 feet.
I am interested in unit rates for this type of work. Volume of work is significant. Dredged cross section will accommodate several pipes. Based on soil or rock I can estimate the quantities and need to make assumptions especially regarding the excavation profile - sand or rock, vertical walls versus sloped, etc.
The plan is to reuse the dredged material to cover the intake piping. Suggestions on the unit rates for dredging/excavation of rock and sand in a sea is appreciated.
The excavation needs to be about 22 feet deep at the shore line and will follow the slope of the sea floor. The geotechnical composition is about 50% sand and 50% hard sedimentary rock. We can blast.
I am doing an estimate to install a water intake pipe about 3/4 mile into the sea. The sea has a slope from shore line to about 25 feet deep 3/4 mile from the shore.
The excavation needs to be about 22 feet deep at the shore line and will follow the slope of the sea floor. The geotechnical composition is about 50% sand and 50% hard sedimentary rock. We can blast. At the end of the pipe we are working in 25 deep seas and dredging/excavating from the sea floor about 22 feet.
I am interested in unit rates for this type of work. Volume of work is significant. Dredged cross section will accommodate several pipes. Based on soil or rock I can estimate the quantities and need to make assumptions especially regarding the excavation profile - sand or rock, vertical walls versus sloped, etc.
The plan is to reuse the dredged material to cover the intake piping. Suggestions on the unit rates for dredging/excavation of rock and sand in a sea is appreciated.