Cable Pulling Tables

Cable pulling analysis allows the user to quickly calculate cable pulling tensions and sidewall bearing pressures to perform "what-if" scenarios for pulling conductor of various sizes through conduit. Cable pulling analysis provides calculations for several pulling methods including pulling eye and basketweave grip. These calculations rely on the following tables. These tables must be owned by SDE.

MMENG_BASICFRICTIONCOEFF

Field	Data Type	Description	How Used
ConduitType	text	Code for the type of conduit
CableCoverMaterial	text	Code for the cable covering material selected.	Populates the Covering Material field (Figure 1).
SingleCblPullSWBPLT150	float	Basic coefficient of friction for single cables less than 150 lbs/ft.	Used to calculate pulling tensions and sidewall bearing pressure.
MultiCblPullSWBPLT150	float	Basic coefficient of friction for multiple cables less than 150 lbs/ft.	Used to calculate pulling tensions and sidewall bearing pressure.
SWBPGT150	float	Basic coefficient of friction for single cables more than 150 lbs/ft.	Used to calculate pulling tensions and sidewall bearing pressure.
Description	text	A description of the conduit selected.	Used to present a list of conduit types.
MaterialDesc	text	A description of the cable covering material selected.	Used to present a list of covering materials.
MaxSWBP	long integer	Maximum sidewall bearing pressure allowable for the conduit type covering material.	Used to compare against calculated sidewall bearing pressure.

Figure 1, Cable Pulling Analysis

MMENG_CABLEPARAMS

Field	Data Type	Description	Units	How Used
CableType	text	The type of cable selected.		Code used to look up the cable type description.
Description	text	A description of the cable selected.		Populates the Cable Type field (Figure 1).
CableOD	double	Cable outer diameter	inches	Used to calculate pulling tension and sidewall bearing pressure.
CableWeight	double	Weight of the cable	lbs/ft	Used to calculate pulling tension and sidewall bearing pressure.
InitTension	long integer	Initial tension of the cable before pulling.	lbs.	Used to calculate pulling tension and sidewall bearing pressure.
AllowedTension	long integer	Maximum allowable tension.	lbs.	Used to calculate pulling tension and sidewall bearing pressure.
LeadSheathOD	double	Outer diameter of the lead sheath.	inches	Used to calculate pulling tension and sidewall bearing pressure.
LeadSheathThick	double	Thickness of the lead sheath.	inches	Used to calculate pulling tension and sidewall bearing pressure.
LeadSheathArea	double	Area of the lead sheath.	square inches	Used to calculate pulling tension and sidewall bearing pressure.
PullType	text	The type of assembly (single, quad, tri, PILC).		Used to calculate pulling tension and sidewall bearing pressure.
Material	text	Conductor Material (e.g., aluminum, copper)		Used to calculate pulling tension and sidewall bearing pressure.
CondSize	text	Size of the conduit.		Used to calculate pulling tension and sidewall bearing pressure.
StockSize	long integer	Non-standard comparitive conductor size.		Used to calculate pulling tension and sidewall bearing pressure for multiple cables.
NeutralPresent	text	Flag that denotes that neutral is part of the assembly.		Used to display the material of the cables when not included in the group.
MinCondNum	short integer	Minimum number of conductors in a pull scenario.		Used to build a list for the number of cables. Populates the Number of Cables field (Figure 1).
MaxCondNum	short integer	Maximum number of conductors in a pull scenario.		Used to build a list for the number of cables. Populates the Number of Cables field (Figure 1).
MinConduitSize	long integer	Recommended minimum conduit size.	inches	Used to warn users when the conduit size is less than recommended.
NumConductors	long integer	The number of conductors in the pull grouping.		Used to calculate pulling tension and sidewall bearing pressure.
IsAssembly	text	Flag to indicate the group is an assembly.		Used to calculate pulling tension and sidewall bearing pressure.

MMENG_MAXTENSIONPULLEYE

Field	Data Type	Description	Units	How Used
CondSize	text	Stock size of conductor.		Used to calculate maximum tension for pulling eye.
CondArea	double	The area of the conductor.	square inches	Used to calculate maximum tension for pulling eye.
Material	text	Conductor material.		Used to calculate maximum tension for pulling eye.
MaxTensionPerCond	long integer	Maximum tension for the conductor.	lbs.	Not currently used.
PullCoeff	long integer	Pulling pressure of pulling.	PSI	Used to calculate maximum tension for pulling eye.

MMENG_NEUTRALPARAMS

Field	Data Type	Description	How Used
NeutralType	text	The type of neutral cable selected.	Code used to look up the neutral cable type description.
Description	text	A description of the neutral cable selected.	Populates the Cable Type field with values for neutral cables (Figure 1).
StockSize	long integer	Non-standard comparitive conductor size.	Used to calculate pulling tension and sidewall bearing pressure for neutral cables.