Figure 2. Vibratory core rig with a 20-foot-long barrel used in a geological 

 survey in Lake Erie. An articulated leg is used to allow the rig 

 to be placed on the platform deck for insertion and removal of the 

 core liner. Note recovered cores contained in the crib area in 

 the foreground . 



Table. Vibracore information summary. 



Vibracore 



We 

 (lb) 



ight 

 (kg) 



Dimensions 



Complete 40-ft system with 

 spare parts for shipment 



7,055 



3,200 





Complete 40-ft coring 

 apparatus 



3,968 



1,800 



40-ft hgt, 20-ft wdth 



Core-barrel pipe 



20 ft (Igth) 

 40 ft (Igth) 



220 

 441 



100 

 200 



o.d. 4.5 in 



Core liner 



20 ft (Igth) 

 40 ft (Igth) 



24 

 48 



11 

 22 



o.d. 3.75 in, i.d. 3.5 in 



Air compressor 

 (requirement) 







250 ftVmin at 120 Ib/in^ 



Crane capacity 

 (requirement) 







10,000 kg (22,046 lb) 



Crew size 







(one skilled operator; 

 two semiskilled helpers) 



