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HVAC Load · Manual J
Stud / Bearing Wall
Combined axial + out-of-plane wind on repetitive wall studs (NDS 3.9).
Code edition
NDS 2018
NDS 2024
Design diagram
— updates live with your inputs
Stud & Material
Material type
Sawn Lumber
Glulam
LVL
PSL
Species
Douglas Fir-Larch
Hem-Fir
Southern Pine
Spruce-Pine-Fir
Sawn lumber only
Grade
Select Structural
No.1
No.2
No.3
Stud
Sawn lumber only
Standard section
Custom…
2x4 (1.5 × 3.5 in)
2x6 (1.5 × 5.5 in)
2x8 (1.5 × 7.25 in)
2x10 (1.5 × 9.25 in)
2x12 (1.5 × 11.25 in)
2x14 (1.5 × 13.25 in)
3x6 (2.5 × 5.5 in)
3x8 (2.5 × 7.25 in)
3x10 (2.5 × 9.25 in)
3x12 (2.5 × 11.25 in)
4x4 (3.5 × 3.5 in)
4x6 (3.5 × 5.5 in)
4x8 (3.5 × 7.25 in)
4x10 (3.5 × 9.25 in)
4x12 (3.5 × 11.25 in)
4x14 (3.5 × 13.25 in)
6x6 (5.5 × 5.5 in)
6x8 (5.5 × 7.5 in)
6x10 (5.5 × 9.5 in)
6x12 (5.5 × 11.5 in)
6x14 (5.5 × 13.5 in)
8x8 (7.5 × 7.5 in)
8x10 (7.5 × 9.5 in)
8x12 (7.5 × 11.5 in)
8x14 (7.5 × 13.5 in)
10x10 (9.5 × 9.5 in)
10x12 (9.5 × 11.5 in)
12x12 (11.5 × 11.5 in)
GL 3-1/8 x 6 (3.125 × 6 in)
GL 3-1/8 x 7-1/2 (3.125 × 7.5 in)
GL 3-1/8 x 9 (3.125 × 9 in)
GL 3-1/8 x 10-1/2 (3.125 × 10.5 in)
GL 3-1/8 x 12 (3.125 × 12 in)
GL 5-1/8 x 9 (5.125 × 9 in)
GL 5-1/8 x 12 (5.125 × 12 in)
GL 5-1/8 x 15 (5.125 × 15 in)
GL 5-1/8 x 18 (5.125 × 18 in)
GL 5-1/8 x 21 (5.125 × 21 in)
GL 5-1/8 x 24 (5.125 × 24 in)
GL 6-3/4 x 15 (6.75 × 15 in)
GL 6-3/4 x 18 (6.75 × 18 in)
GL 6-3/4 x 21 (6.75 × 21 in)
GL 6-3/4 x 24 (6.75 × 24 in)
GL 6-3/4 x 27 (6.75 × 27 in)
GL 6-3/4 x 30 (6.75 × 30 in)
GL 8-3/4 x 24 (8.75 × 24 in)
GL 8-3/4 x 30 (8.75 × 30 in)
GL 8-3/4 x 36 (8.75 × 36 in)
Pick a standard stud size or Custom
Stud width b
(in)
Stud depth d
(in)
2x6 = 5.5 in
Geometry
Wall height
(ft)
Floor to floor / unbraced
Stud spacing
(in)
On center (<=24 for Cr)
Effective length factor Ke
NDS App. G
Loads
Axial dead load P_D
(lb)
Per stud
Axial live/snow P_L
(lb)
Per stud
Out-of-plane wind
(psf)
Component & cladding pressure
Load duration
Permanent (0.9)
Ten years / Floor Live (1.0)
Two months / Snow (1.15)
Seven days / Construction (1.25)
Ten minutes / Wind & Seismic (1.6)
Impact (2.0)
Sets CD
Design Assumptions
Service condition
Dry (CM=1.0)
Wet
Sets CM
Temperature
T <= 100F (Ct=1.0)
100F < T <= 125F
125F < T <= 150F
Sets Ct
Incised lumber
Yes
Sets Ci
Run calculation
NDS 2018