Pier Data Sheets

RCS Shaft Size (inches)	Helix Plate Thickness (inches)	Helix Diameter (inches)	Working Capacity (lbs)	Theoretical Installation Torque Required To Admin Working Capacity (ft-lbs)	Approximate Torque at Which Shaft Will Begin to Twist (ft-lbs)	Maximum Torque Capacity of Shaft (ft-lbs)	Design Strength of Standard Bracket (lbs)
1 1/2″	3/8″	8	17,500	3,500	3,600	6,000	60,000
		10	10,000	2,000
		12	10,000	2,000
		14	10,000	2,000
		8-10	20,000	4,000
		10-12	20,000	4,000
		8-10-12	30,000	6,000
	1/2″	8	27,500	5,500
		10	25,000	5,000
		12	24,900	4,990
		14	21,125	4,255
		8-10	50,000	(10,000) Note 2
		10-12	49,800	(9,960) Note 2
		8-10-12	(74,700) Note 1	(14,940) Note 2
Note 1: Capacity is limited to 60,000 lbs due to maximum capacity of bracket Note 2: Maximum torque capacity is 6,000 ft-lbs, so maximum working compressive or tensilo load is limited to 30,000 lbs *This condition is controlling condition Working capacity=(Installation Torque x 10)/2

RCS Shaft Size (inches)	Helix Plate Thickness (inches)	Helix Diameter (inches)	Working Capacity (lbs)	Theoretical Installation Torque Required To Admin Working Capacity (ft-lbs)	Approximate Torque at Which Shaft Will Begin to Twist (ft-lbs)	Maximum Torque Capacity of Shaft (ft-lbs)	Design Strength of Standard Bracket (lbs)
1 3/4″	3/8″	8	17,500	3,500	6,000	10,000	60,000
		10	15,000	3,000
		12	13,750	2,750
		14	11,250	2,250
		8-10	30,000	6,000
		10-12	27,500	5,500
		8-10-12	41,250	8,250
	1/2″	8	35,000	7,000
		10	32,500	6,500
		12	27,500	5,500
		14	25,000	5,000
		8-10	(65,000) Note 1	(13,000) Note 2
		10-12	55,000	(11,000) Note 2
		8-10-12	(82,500) Note 1	(16,500) Note 2
Note 1: Capacity is limited to 60,000 lbs due to maximum capacity of bracket Note 2: Maximum torque capacity is 10,000 ft-lbs, so maximum working compressive or tensilo load is limited to 50,000 lbs *This condition is controlling condition Working capacity=(Installation Torque x 10)/2