Beam Designers - Defining Support Conditions

https://files.masterseries.com/documents/Beams-bd_pins.pdf

Title: Pinning members

Date: 09/09/2004

Versions: 2001.11 +

Program: MasterBeam All Beam Designers

The pinning of all members is controlled by the switches on the columns as follows.

For the Lower Column the full description of 20/P/30 for the type means

20 is the left beam degree of fixity at column (0=pin)

P is the lower node of the Column P/F pin fixed

30 is the right beams degree of fixity at column (0=pin)

Examples

	Left Beam	Column Base	Right Beam
P	Fixed	Pinned	Fixed
0/F/0	Pinned	Fixed	Pinned
0/P/0 (see notes)	Pinned	Pinned	Pinned
20/F/30	20% fixity	Fixed	30% fixity
100/P/100 = P	Fixed	Pinned	Fixed
20	20% fixity	As previous base	20% fixity

Notes:

1. 0/P/0 should not be used on all supports as it may give an unstable structure with weird results. As this is in essence a Beam designer and 0/F/0 will give you the same result but with stability.

2. Moment redistribution is best performed inside the concrete design module as this gives greater control.

Examples

For	Input
	P
	0/F/0

Upper Columns

The upper Column, if present, only has P for pinned and F for fixed at the remote end.

Knife-Edge Beams

Special conditions for knife-edge beams i.e. no columns