Load Types

(Revised: 09/13/16)

All system-generated loads that cannot be applied by the user are shown in Purple.

Dead and Collateral Loads

D Material Dead Weight NEG Load Nullifier

C Collateral Load

CG Collateral Load for Gravity Cases

CU Collateral Load for Wind Cases

Live Loads - Roof

L Roof Live Load

L> Roof Live Load – Notional Right (2^nd Order Analysis)

<L Roof Live Load – Notional Left (2^nd Order Analysis)

ASL^ Alternate Span Roof Live Load, Shifted Right

^ASL Alternate Span Roof Live Load, Shifted Left

PL2 Partial Roof Live Load – Full 2-Spans

Snow Loads

S Snow Load - Uniform

S> Snow Uniform – Notional Right (2^nd Order Analysis)

<S Snow Uniform – Notional Left (2^nd Order Analysis)

SMS Specified Minimum Roof Snow

SMS > Specified Minimum Roof Snow – Notional Right (2^nd Order Analysis)

< SMS Specified Minimum Roof Snow – Notional Left (2^nd Order Analysis)

US1* Unbalanced Snow Load 1, Shifted Right

*US1 Unbalanced Snow Load 1, Shifted Left

US2* Unbalanced Snow Load 2, Shifted Right

*US2 Unbalanced Snow Load 2, Shifted Left

PF1 Partial Snow Load, Full Magnitude, 1 Span

PH1 Partial Snow Load, Half Magnitude, 1 Span

PF2 Partial Snow Load, Full Magnitude, 2 Spans

PH2 Partial Snow Load, Half Magnitude, 2 Spans

PS1 Partial Load, Half Span 1

PS2 Partial Load, Half Span 2

SD Snow Drift Load

SS Sliding Snow Load

RS Rain Surcharge Load (Rain on Snow)

Wind Loads

W Wind Load

MW Minimum Wind Load MWB Minimum Wind Bracing Reaction

W1> Wind Load, Case 1, Right WB1> Wind Brace Reaction, Case 1, Right

<W1 Wind Load, Case 1, Left <WB1 Wind Brace Reaction, Case 1, Left

W2> Wind Load, Case 2, Right WB2> Wind Brace Reaction, Case 2, Right

<W2 Wind Load, Case 2, Left <WB2 Wind Brace Reaction, Case 2, Left

W3> Wind Load, Case 3, Right WB3> Wind Brace Reaction, Case 3, Right

<W3 Wind Load, Case 3, Left <WB3 Wind Brace Reaction, Case 3, Left

W4> Wind Load, Case 4, Right WB4> Wind Brace Reaction, Case 4, Right

<W4 Wind Load, Case 4, Left <WB4 Wind Brace Reaction, Case 4, Left

W5> Wind Load, Case 5, Right WB5> Wind Brace Reaction, Case 5, Right

<W5 Wind Load, Case 5, Left <WB5 Wind Brace Reaction, Case 5, Left

W6> Wind Load, Case 6, Right WB6> Wind Brace Reaction, Case 6, Right

<W6 Wind Load, Case 6, Left <WB6 Wind Brace Reaction, Case 6, Left

WP Wind Load, Parallel to the Ridge

WPR Wind Load, Parallel to the Ridge, Right

WPL Wind Load, Parallel to the Ridge, Left

WPA1 Wind Load, Parallel to the Ridge, Ref Point A, Case 1

WPA2 Wind Load, Parallel to the Ridge, Ref Point A, Case 2

WPB1 Wind Load, Parallel to the Ridge, Ref Point B, Case 1

WPB2 Wind Load, Parallel to the Ridge, Ref Point B, Case 2

WPC1 Wind Load, Parallel to the Ridge, Ref Point C, Case 1

WPC2 Wind Load, Parallel to the Ridge, Ref Point C, Case 2

WPD1 Wind Load, Parallel to the Ridge, Ref Point D, Case 1

WPD2 Wind Load, Parallel to the Ridge, Ref Point D, Case 2

Seismic Loads

E Seismic Load

E> Seismic Load, Right EB> Seismic Brace Reaction, Right

<E Seismic Load, Left <EB Seismic Brace Reaction, Left

EG Vertical Seismic Effect

EG+ Vertical Seismic Effect, additive (downward)

EG- Vertical Seismic Effect, subtractive (upward)

Floor Loads

FL Floor Live Load

FL* Alternate Span Floor Live Load, Shifted Right

*FL Alternate Span Floor Live Load, Shifted Left

FD Floor Dead Load

Auxiliary Loads (Cranes)

AL Auxiliary Live Load ALB Aux Live Brace Reaction

AL* Auxiliary Live Load, Max Load on the Right ALB> Aux Live Brace Reaction, Right

*AL Auxiliary Live Load, Max Load on the Left <ALB Aux Live Brace Reaction, Left

AL*> Auxiliary Live Load, Max Load on the Right, Moving to the Right WALB> Wind, Aux Live Brace Reaction, Right

*AL> Auxiliary Live Load, Max Load on the Left, Moving to the Right <WALB Wind, Aux Live Brace Reaction, Left

<AL* Auxiliary Live Load, Max Load on the Right, Moving to the Left

<*AL Auxiliary Live Load, Max Load on the Left, Moving to the Left

AD Auxiliary Dead Load

Auxiliary Loads (Cranes) – (n) refers to the Aisle number if more than one aisle is input

AL*(n) Auxiliary Live Load, Max Load on the Right ALB>(n) Aux Live Brace Reaction, Right

*AL(n) Auxiliary Live Load, Max Load on the Left <ALB(n) Aux Live Brace Reaction, Left

AL*>(n) Auxiliary Live Load, Max Load on the Right, Moving to the Right WALB>(n) Wind, Aux Live Brace Reaction, Right

*AL>(n) Auxiliary Live Load, Max Load on the Left, Moving to the Right <WALB(n) Wind, Aux Live Brace Reaction, Left

<AL*(n) Auxiliary Live Load, Max Load on the Right, Moving to the Left

<*AL(n) Auxiliary Live Load, Max Load on the Left, Moving to the Left

Rain and Temperature Loads

R Rain Load

T Temperature Load

V Shear Load (Applies to OW Rafters)

User Loads (Do not use for Bracing loads when 2^nd Order Analysis is required)

U0 User Defined Load UB User Brace Reaction

U1 User Defined Load – 1 UB1 User Brace Reaction – 1

U2 User Defined Load – 2 UB2 User Brace Reaction – 2

U3 User Defined Load – 3 UB3 User Brace Reaction – 3

U4 User Defined Load – 4 UB4 User Brace Reaction – 4

U5 User Defined Load – 5 UB5 User Brace Reaction – 5

U6 User Defined Load – 6 UB6 User Brace Reaction – 6

U7 User Defined Load – 7 UB7 User Brace Reaction – 7

U8 User Defined Load – 8 UB8 User Brace Reaction – 8

U9 User Defined Load – 9 UB9 User Brace Reaction – 9

See also:

§ Design - Load Cases

§ Surface Loading – Wall or Roof