Structural Calculations~1.pdf

C O N S U L T I N G

S T R U C T U R A L

E N G I N E E R S

LIMITATIONS: Engineer was retained in a limited capacity for this project. Design is based upon the information provided by the client, who is solely responsible for accuracy of same. No responsibility and/or liability is assumed by, or is to be assigned to the Engineer for items beyond those shown on these sheets.

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Structural Calculations for the Department of Corrections CDC Building 2 Stair

Job Number: 251227

Codes: 2025 OSSC / 2024 IBC

Date: 2/6/26

Location: 3601 State St.

Salem, OR 97301

Client: AC + Co Architecture 1100 Liberty St. SE, Suite 200 Salem, OR 97302 Phone: 503-581-4114

Engineer: John Carstensen, P.E.

MSC Engineers, Inc.

3470 Pipebend Place NE, Suite 120 Salem, OR 97301 Phone: 503-399-1399

Scope of Services: Structural calculations for new, steel stair with concrete filled treads and landing.

Contents: Calculations 1.1 – 1.29

DIGITALLY SIGNED

DECEMBER 31, 2027

Digitally signed by John Carstensen Reason: I am approving this document

Contact Info: johnc@mscengineersinc.com Date: 2026.02.03 08:13:26-08'00'

FILE NO. DATE:

PROJECT: MADE BY:

CLIENT:

Risk Category = II Occupancy Risk Category (2025 OSSC: Table 1604.5)

Determine Loads Landing: DL = 50 psf 4" Concrete Slab

LL = 100 psf Distributed (2025 OSSC Table 1607.1)

Treads: DL = 25 psf 2" Concrete Pan Treads LL = 100 psf Distributed (2025 OSSC Table 1607.1)

Stringer: DL = 40 plf Stringer + Handrail

Guardrail: LL = 200 lb Concentrated (2025 OSSC Sec.1607.8.1) LL = 50 plf Distributed (2025 OSSC Sec.1607.8.1)

Stair Geometry W = 4.50 Width of stair

# Risers = 16 Max Number of risers hriser = 6.125 in Height of individual riser

H = 98.0 in Stringer vertical projection # Treads = 16 Number of treads briser = 11 in Length of individual tread B = 176.0 in Stringer horizontal projection L = 201.4 in Length of stringer = (H 2 + B 2 ) 1/2

Determine Stringer Size ωDL = 96.25 plf Stringer Dead Load = DL tread *(W/2) + DL stringer ωLL = 196.6 plf Stringer Live Load = LL*(B/L)*(W/2) ωTL = 292.8 plf Stringer Live Load = ω DL + ω LL

Ma = 123,782 lb-in Max Moment = ω TL * L 2 / 8 Va = 2,458 lb Max Shear = ω TL * L / 2

TRY C12X20.7

Fy = 36 ksi Steel yield stress Ω = 1.67 Safety Factor for Flexure Z = 25.6 in3 Plastic Section Modulus I = 129 in4 Moment of Inertia

Mn / Ω = 551,856 lb-in Allowable Moment = Fy * Z / Ω

OK

Δmax = 0.14 in Max Deflection = 5ωL 4 / 384EI δallow = 0.84 in Allowable Deflection = L / 240

OK

Use C12X20.7 STRINGERS

Stair Design:

2/2/2026

JAC

251227 ODOC CDC Bldg 2 Stair

AC&Co

1.1

CLIENT:

Seismic Criteria:

Risk Category = II Occupancy Risk Category (IBC: Table 1604.5) Life Safety? yes Required for LS purposes? (ASCE 7-16: Section 13.1.3)

Ip = 1.50 Seismic Importance Factor (ASCE 7-16: Section 13.1.3)

Site Class = D Soil Site Class (per project specifications) SS = 0.807 MCER ground motion (T = 0.2s) (see attached) S1 = 0.404 MCER ground motion (T = 1.0s) (see attached) fa = 1.2 Short-period Site Coefficient (ASCE 7-16: Table 11.4-1) fv = 1.9 Long-period Site Coefficient (ASCE 7-16: Table 11.4-2)

SMS = 0.968 Site modified spectral accel. (S MS = Ss * fa) SM1 = 0.768 Site modified spectral accel. (S M1 = S 1 * fv) SDS = 0.645 Design spectal accel. (T = 0.2s) (S DS = S MS * 2/3) SD1 = 0.512 Design spectal accel. (T = 1.0s) (S D1 = S M1 * 2/3)

SDC = D Seismic Design Category (ASCE 7-16: Table 11.4-2)

Seismic Demand:

Table 13.5-1 Coefficients For Architectural Components ap = 1 Comp. Amplification Factor (ASCE 7-16: Table 13.6-1) Rp = 2.5 Comp. Response Mod. Factor (ASCE 7-16: Table 13.6-1) Ωo= 2 Comp. Overstrength Factor (ASCE 7-16: Table 13.6-1) z/h = 0.5 Attachment point to structure (ASCE 7-16: Section 13.1.1)

Fp = (ASCE 7-16: Equation 13.3-1)

Fp,max = 1.6 SDS Ip Wp = 1.548 * Wp (ASCE 7-16: Equation 13.3-2) Fp,min = 0.3 SDS Ip Wp = 0.290 * Wp (ASCE 7-16: Equation 13.3-3) Fp,vert = 0.2 SDS Wp = 0.129 * Wp (ASCE 7-16: Section 13.3.1.2)

251227 2/2/2026

ODOC CDC Bldg 2 Stair JAC

AC&Co

0.310 * Wp

Egress stairways not part of the building seismic force resisting system

= 1 6 SDS I W

. / 1 + 2 =

1.2

CLIENT:

h = 3.33 ft height of railing δallow = 1 in max allowable deflection of handrail

L = 4 ft railing span between supports Vmax = 200 lb = MAX [ 200 lb , 50-plf * L ]

Shared? No 25% reduction if load can be distributed by top railing Vused = 200 lb = Vmax * 0.75 (For Post Design Only)

Fy = 35 ksi Fy = 35 ksi Ω = 1.67 Ω = 1.67 Z = 0.421 in3 Z = 0.421 in3

I = 0.293 in4 I = 0.293 in4

Ma = 7.99 k-in = V * h Ma = 2.40 k-in =max[PL/4,wL2/8] Mn / Ω = 8.82 k-in = Fy * Z / Ω Mn / Ω = 8.82 k-in = Fy * Z / Ω

OK OK

Δmax = 0.50 in = Vh3/3EI Δmax = 0.41 in =max(PL3/48EI, 5wL4/38 δallow = 1.00 in δallow = 1.00 in

OK OK

Dweld = 3 /16 ths weld size b = 2.09 in post width + weld width

Sweld = 3.43 in = πb2/4 (round) OR 4b2/3 (square) Ra,weld = 2.33 ksi/in = M / S Rn /Ω= 2.78 ksi/in = 0.928 * D

OK

251227 2/2/2026 ODOC CDC Bldg 2 Stair JAC

AC&Co

Post Design Railing Design

Connection Design

Guardrail Design:

Use 3/16 fillet weld all around

Use Pipe1-1/2STD POSTS @ 4 OC MAX Use Pipe1-1/2STD top rail btw posts

Pipe1-1/2STDPipe1-1/2STD

1.3

1.4

MSC Engineers Inc

JAC

240815

Stair 1 R-1 Feb 02, 2026 at 02:31 PM Stair.r3d

1.5

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Stair 1 R-2 Feb 02, 2026 at 02:31 PM

1.6

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Stair 1 R-3 Feb 02, 2026 at 02:32 PM

1.7

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Stair 1 R-4 Feb 02, 2026 at 01:12 PM

1.8

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Stair 1 R-5 Feb 02, 2026 at 01:12 PM

1.9

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Stair 1 R-6 Feb 02, 2026 at 01:13 PM

1.10

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Stair 1 R-7 Feb 02, 2026 at 01:21 PM

1.11

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Stair 1 R-8 Feb 02, 2026 at 01:22 PM

1.12

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Stair 1 R-9 Feb 02, 2026 at 01:32 PM

1.13

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Stair 1 R-10 Feb 02, 2026 at 01:33 PM

1.14

Company Designer Job Number Model Name

MSC Engineers Inc

JAC

240815 Stair 1

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Model Settings Number of Reported Sections 5 Number of Internal Sections 100 Member Area Load Mesh Size (in2) 144.000001 Consider Shear Deformation Yes Consider Torsional Warping Yes Approximate Mesh Size (in) 12.000015 Transfer Forces Between Intersecting Wood Walls Yes Increase Wood Wall Nailing Capacity for Wind Loads Yes Include P-Delta for Walls Yes Optimize Masonry and Wood Walls Yes Maximum Number of Iterations 3 Single No Multiple (Optimum) Yes Maximum No

Global Axis corresponding to vertical direction Y Convert Existing Data Yes Default Global Plane for z-axis XZ Plate Local Axis Orientation Nodal

Hot Rolled Steel AISC 16th (360-22): ASD Stiffness Adjustment Yes (Iterative) Notional Annex None Connections AISC 15th (360-16): LRFD Cold Formed Steel AISI S100-16: LRFD Stiffness Adjustment Yes (Iterative) Wood AWC NDS-18 / SDPWS-15 ASD Temperature < 100F Concrete ACI 318-19 Masonry TMS 402-16: Strength Aluminum AA ADM1-15: LRFD Structure Type Building Stiffness Adjustment Yes (Iterative) Stainless AISC 14th (360-10): LRFD Stiffness Adjustment Yes (Iterative)

Compression Stress Block Rectangular Stress Block Analyze using Cracked Sections Yes Leave room for horizontal rebar splices (2*d bar spacing) Yes List forces which were ignored for design in the Detail Report Yes

Column Min Steel 1 Column Max Steel 8 Rebar Material Spec ASTM A615 Warn if beam-column framing arrangement is not understood No Number of Shear Regions 4 Region 2 & 3 Spacing Increase Increment (in) 3.999992

Code ASCE 7-16 Risk Category I or II Drift Cat Other

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Model Settings (Continued) Base Elevation (ft) Include the weight of the structure in base shear calcs Yes S1 (g) 1 SD1 (g) 1 SDS (g) 1 TL (sec) 5 T Z (sec) T X (sec) CtZ 0.020101 CtX 0.020101 CtExp. Z 0.75 CtExp. X 0.75 R Z 3 R X 3 Ω0Z 1 Ω0X 1 CdZ 1 CdX 1 ρ Z 1 ρ X 1

1.16

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Basic Load Cases BLC Description Category X Gravity Y Gravity Z Gravity Distributed Area(Member)

1 D DL -1 10 4

2 L LL 4

3 Ex ELX 0.31 10 4 4 Ez ELZ 0.31 10 4 5 BLC 1 Transient Area Loads None 11 6 BLC 2 Transient Area Loads None 11 7 BLC 3 Transient Area Loads None 11 8 BLC 4 Transient Area Loads None 11

Load Combinations Description Solve P-Delta BLC Factor BLC Factor BLC Factor

1 D Yes Y 1 1 2 L Yes Y 2 1 3 Ex Yes Y 3 1 4 Ez Yes Y 4 1 6 ----- ASD Combos ----- 7 D + L Yes Y DL 1 LL 1 8 D + 0.7Ex Yes Y DL 1.09 ELX 0.7 9 D + 0.7Ez Yes Y DL 1.09 ELZ 0.7

10 D - 0.7Ex Yes Y DL 1.09 ELX -0.7 11 D - 0.7Ez Yes Y DL 1.09 ELZ -0.7 12 D + 0.525Ex + 0.75L Yes Y DL 1.09 ELX 0.525 LL 0.75 13 D + 0.525Ez + 0.75L Yes Y DL 1.09 ELZ 0.525 LL 0.75 14 D - 0.525Ex + 0.75L Yes Y DL 1.09 ELX -0.525 LL 0.75 15 D - 0.525Ez + 0.75L Yes Y DL 1.09 ELZ -0.525 LL 0.75 16 0.6D + 0.7Ex Yes Y DL 0.51 ELX 0.7 17 0.6D + 0.7Ez Yes Y DL 0.51 ELZ 0.7 18 0.6D - 0.7Ex Yes Y DL 0.51 ELX -0.7 19 0.6D - 0.7Ez Yes Y DL 0.51 ELZ -0.7 21 ----- LRFD Combos -----

22 1.4D Y DL 1.4

23 1.2D + 1.6L Y DL 1.2 LL 1.6

24 1.2D + Ex + 0.5L Y DL 1.33 ELX 1 LL 25 1.2D + Ez + 0.5L Y DL 1.33 ELZ 1 LL 26 1.2D - Ex + 0.5L Y DL 1.33 ELX -1 LL 27 1.2D - Ez + 0.5L Y DL 1.33 ELZ -1 LL 28 0.9D + Ex Y DL 0.77 ELX 1 29 0.9D + Ez Y DL 0.77 ELZ 1 30 0.9D - Ex Y DL 0.77 ELX -1 31 0.9D - Ez Y DL 0.77 ELZ -1

Member Area Loads (BLC 1 : D) Node ANode BNode CNode DDirectionLoad DirectionA Magnitude [ksf]B Magnitude [ksf]C Magnitude [ksf]D Magnitude [ksf]Exclude Braces

1 N6 N1 N2 N7 Y A-B -0.025 -0.025 -0.025 -0.025 Yes 2 N8 N3 N4 N9 Y A-B -0.025 -0.025 -0.025 -0.025 Yes 3 N7 N2 N3 N8 Y Two Way -0.05 -0.05 -0.05 -0.05 Yes 4 N14 N4 N5 N10 Y Two Way -0.05 -0.05 -0.05 -0.05 Yes

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JAC

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Member Area Loads (BLC 2 : L) Node ANode BNode CNode DDirectionLoad DirectionA Magnitude [ksf]B Magnitude [ksf]C Magnitude [ksf]D Magnitude [ksf]Exclude Braces

1 N6 N1 N2 N7 PY A-B -0.1 -0.1 -0.1 -0.1 Yes 2 N8 N3 N4 N9 PY A-B -0.1 -0.1 -0.1 -0.1 Yes 3 N7 N2 N3 N8 PY Two Way -0.1 -0.1 -0.1 -0.1 Yes 4 N14 N4 N5 N10 PY Two Way -0.1 -0.1 -0.1 -0.1 Yes

Member Area Loads (BLC 3 : Ex) Node ANode BNode CNode DDirectionLoad DirectionA Magnitude [ksf]B Magnitude [ksf]C Magnitude [ksf]D Magnitude [ksf]Exclude Braces

1 N6 N1 N2 N7 X A-B 0.008 0.008 0.008 0.008 Yes 2 N8 N3 N4 N9 X A-B 0.008 0.008 0.008 0.008 Yes 3 N7 N2 N3 N8 X Two Way 0.016 0.016 0.016 0.016 Yes 4 N14 N4 N5 N10 X Two Way 0.016 0.016 0.016 0.016 Yes

Member Area Loads (BLC 4 : Ez) Node ANode BNode CNode DDirectionLoad DirectionA Magnitude [ksf]B Magnitude [ksf]C Magnitude [ksf]D Magnitude [ksf]Exclude Braces

1 N6 N1 N2 N7 Z A-B 0.008 0.008 0.008 0.008 Yes 2 N8 N3 N4 N9 Z A-B 0.008 0.008 0.008 0.008 Yes 3 N7 N2 N3 N8 Z Two Way 0.016 0.016 0.016 0.016 Yes 4 N14 N4 N5 N10 Z Two Way 0.016 0.016 0.016 0.016 Yes

Member Distributed Loads (BLC 1 : D) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M3 Y -0.015 -0.015 0 %100 2 M6 Y -0.015 -0.015 0 %100 3 M5 Y -0.015 -0.015 0 %100 4 M1 Y -0.015 -0.015 0 %100 5 M10 Y -0.015 -0.015 0 %100 6 M11 Y -0.015 -0.015 0 %100 7 M2 Y -0.015 -0.015 0 %100 8 M9 Y -0.015 -0.015 0 %100 9 M4 Y -0.015 -0.015 0 %100

10 M8 Y -0.015 -0.015 0 %100

Member Distributed Loads (BLC 3 : Ex) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M3 X 0.005 0.005 0 %100 2 M6 X 0.005 0.005 0 %100 3 M5 X 0.005 0.005 0 %100 4 M1 X 0.005 0.005 0 %100 5 M10 X 0.005 0.005 0 %100 6 M11 X 0.005 0.005 0 %100 7 M2 X 0.005 0.005 0 %100 8 M9 X 0.005 0.005 0 %100 9 M4 X 0.005 0.005 0 %100

10 M8 X 0.005 0.005 0 %100

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JAC

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Member Distributed Loads (BLC 4 : Ez) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M3 Z 0.005 0.005 0 %100 2 M6 Z 0.005 0.005 0 %100 3 M5 Z 0.005 0.005 0 %100 4 M1 Z 0.005 0.005 0 %100 5 M10 Z 0.005 0.005 0 %100 6 M11 Z 0.005 0.005 0 %100 7 M2 Z 0.005 0.005 0 %100 8 M9 Z 0.005 0.005 0 %100 9 M4 Z 0.005 0.005 0 %100

10 M8 Z 0.005 0.005 0 %100

Member Distributed Loads (BLC 5 : BLC 1 Transient Area Loads) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M11 Y -0.056 -0.056 1.776e-15 16.572 2 M4 Y -0.056 -0.056 7.161e-15 9.962 3 M8 Y -0.056 -0.056 0 9.962 4 M12 Y -0.1 -0.1 3.537e-9 4.5 5 M13 Y -0.05 -0.05 9.549e-9 4.5 6 M14 Y -0.05 -0.05 0 4.5 7 M6 Y -0.05 -0.05 0 5 8 M7 Y -0.05 -0.05 1.061e-8 5 9 M19 Y -0.1 -0.1 7.86e-9 5

10 M20 Y -0.1 -0.1 1.061e-8 5 11 M1 Y -0.056 -0.056 2.109e-15 16.572

Member Distributed Loads (BLC 6 : BLC 2 Transient Area Loads) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M1 Y -0.187 -0.187 2.109e-15 16.572 2 M11 Y -0.187 -0.187 1.776e-15 16.572 3 M4 Y -0.186 -0.186 7.161e-15 9.962 4 M8 Y -0.186 -0.186 0 9.962 5 M12 Y -0.2 -0.2 3.537e-9 4.5 6 M13 Y -0.1 -0.1 9.549e-9 4.5 7 M14 Y -0.1 -0.1 0 4.5 8 M6 Y -0.1 -0.1 0 5 9 M7 Y -0.1 -0.1 1.061e-8 5

10 M19 Y -0.2 -0.2 7.86e-9 5 11 M20 Y -0.2 -0.2 1.061e-8 5

Member Distributed Loads (BLC 7 : BLC 3 Transient Area Loads) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M20 X 0.032 0.032 1.061e-8 5 2 M1 X 0.018 0.018 2.109e-15 16.572 3 M11 X 0.018 0.018 1.776e-15 16.572 4 M4 X 0.018 0.018 7.161e-15 9.962 5 M8 X 0.018 0.018 0 9.962 6 M12 X 0.032 0.032 3.537e-9 4.5 7 M13 X 0.016 0.016 9.549e-9 4.5 8 M14 X 0.016 0.016 0 4.5 9 M6 X 0.016 0.016 0 5

10 M7 X 0.016 0.016 1.061e-8 5

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Member Distributed Loads (BLC 7 : BLC 3 Transient Area Loads) (Continued) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

11 M19 X 0.032 0.032 7.86e-9 5

Member Distributed Loads (BLC 8 : BLC 4 Transient Area Loads) Member Label Direction Start Magnitude [k/ft, F, ksf, k-ft/ft] End Magnitude [k/ft, F, ksf, k-ft/ft] Start Location [(ft, %)] End Location [(ft, %)]

1 M1 Z 0.018 0.018 2.109e-15 16.572 2 M11 Z 0.018 0.018 1.776e-15 16.572 3 M4 Z 0.018 0.018 7.161e-15 9.962 4 M8 Z 0.018 0.018 0 9.962 5 M12 Z 0.032 0.032 3.537e-9 4.5 6 M13 Z 0.016 0.016 9.549e-9 4.5 7 M14 Z 0.016 0.016 0 4.5 8 M6 Z 0.016 0.016 0 5 9 M7 Z 0.016 0.016 1.061e-8 5

10 M19 Z 0.032 0.032 7.86e-9 5 11 M20 Z 0.032 0.032 1.061e-8 5

Hot Rolled Steel Section Sets Label Shape Type Design List Material Design Rule Area [in²] Iyy [in⁴] Izz [in⁴] J [in⁴]

1 Stringer C12X20.7 Beam Channel A36 Gr.36 Typical 6.08 3.86 129 0.369 2 B1 MC6X12 Beam Channel A36 Gr.36 Typical 3.53 1.85 18.7 0.155 3 B2 L4X4X4 Beam Single Angle A36 Gr.36 Typical 1.93 3 3 0.044 4 C1 HSS4X4X3 Column Tube A500 Gr.B Rect Typical 2.58 6.21 6.21 10 5 C2 HSS3X3X3 Column Tube A500 Gr.B Rect Typical 1.89 2.46 2.46 4.03

Member Primary Data Label I Node J Node Rotate(deg) Section/Shape Type Design List Material Design Rule

1 M1 N1 N2 Stringer Beam Channel A36 Gr.36 Typical 2 M2 N2 N11 Stringer Beam Channel A36 Gr.36 Typical 3 M3 N11 N3 Stringer Beam Channel A36 Gr.36 Typical 4 M4 N3 N4 Stringer Beam Channel A36 Gr.36 Typical 5 M5 N4 N5 Stringer Beam Channel A36 Gr.36 Typical 6 M6 N5 N10 Stringer Beam Channel A36 Gr.36 Typical 7 M7 N4 N14 B1 Beam Channel A36 Gr.36 Typical 8 M8 N9 N8 Stringer Beam Channel A36 Gr.36 Typical 9 M9 N8 N12 Stringer Beam Channel A36 Gr.36 Typical

10 M10 N12 N7 Stringer Beam Channel A36 Gr.36 Typical 11 M11 N7 N6 Stringer Beam Channel A36 Gr.36 Typical 12 M12 N11 N15 B1 Beam Channel A36 Gr.36 Typical 13 M13 N2 N7 90 B2 Beam Single Angle A36 Gr.36 Typical 14 M14 N3 N8 90 B2 Beam Single Angle A36 Gr.36 Typical 15 M15 N17 N13 C1 Column Tube A500 Gr.B Rect Typical 16 M16 N16 N11 C2 Column Tube A500 Gr.B Rect Typical 17 M17 N18 N19 C1 Column Tube A500 Gr.B Rect Typical 18 M18 N14 N10 B2 Beam Single Angle A36 Gr.36 Typical 19 M19 N20 N21 90 B2 Beam Single Angle A36 Gr.36 Typical 20 M20 N22 N23 90 B2 Beam Single Angle A36 Gr.36 Typical

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Envelope AISC 16TH (360-22): ASD Member Steel Code Checks Member Shape Code CheckLoc[ft]LCShear CheckLoc[ft]Dir LCPnc/om [k]Pnt/om [k]Mnyy/om [k-ft]Mnzz/om [k-ft] Cb Eqn

1 M1 C12X20.7 0.236 7.423 14 0.046 16.572 y 7 82.391 131.066 4.949 45.988 1 H1-1b 2 M2 C12X20.7 0.147 0 12 0.048 0 y 14 124.953 131.066 4.949 45.988 1.679 H1-1b 3 M3 C12X20.7 0.108 2 12 0.035 0 y 12 124.953 131.066 4.949 45.988 1.649 H1-1b 4 M4 C12X20.7 0.207 9.962 12 0.046 9.962 y 7 91.984 131.066 4.949 45.988 1.582 H1-1b 5 M5 C12X20.7 0.275 0 12 0.113 2 y 7 85.271 131.066 4.949 45.988 1.591 H1-1b 6 M6 C12X20.7 0.023 3.75 7 0.038 0 y 7 97.24 131.066 4.949 45.722 1.079 H1-1b 7 M7 MC6X12 0.253 4.479 7 0.067 5 z 7 53.004 76.096 2.961 13.194 1.048 H1-1b 8 M8 C12X20.7 0.167 6.537 14 0.036 0 y 7 91.984 131.066 4.949 45.988 1 H1-1b 9 M9 C12X20.7 0.063 0 14 0.026 2 y 7 124.953 131.066 4.949 45.988 1.639 H1-1b

10 M10 C12X20.7 0.133 2 14 0.046 2 y 14 124.953 131.066 4.949 45.988 1.681 H1-1b 11 M11 C12X20.7 0.239 8.976 12 0.045 0 y 7 82.391 131.066 4.949 45.988 1 H1-1b 12 M12 MC6X12 0.184 4.479 7 0.197 5 y 7 53.004 76.096 2.961 13.419 1.128 H1-1b 13 M13 L4X4X4 0.216 3.375 8 0.059 0 z 14 29.699 41.605 2.088 4.339 1.461 H2-1 14 M14 L4X4X4 0.149 1.125 14 0.049 0 z 14 29.699 41.605 2.088 4.107 1.102 H2-1 15 M15 HSS4X4X3 0.094 0 7 0.002 14.833 y 8 29.317 71.066 8.424 8.424 1 H1-1b* 16 M16 HSS3X3X3 0.178 0 7 0 9.25 z 19 27.54 52.06 4.522 4.522 1 H1-1b* 17 M17 HSS4X4X3 0.266 9.188 8 0.033 12.25 y 10 38.85 71.066 8.424 8.424 1.353 H1-1b 18 M18 L4X4X4 0.002 4 12 0.025 4 y 7 26.599 41.605 2.088 4.125 1.5 H2-1 19 M19 L4X4X4 0.36 3.073 7 0.088 5 z 7 28.765 41.605 2.088 3.993 1.081 H2-1 20 M20 L4X4X4 0.372 3.073 7 0.089 5 z 7 28.765 41.605 2.088 3.992 1.08 H2-1

Envelope Node Reactions Node Label X [k] LC Y [k] LC Z [k] LC MX [k-ft] LC MY [k-ft] LC MZ [k-ft] LC

1 N1 max 0.141 18 4.71 7 3.729 7 0 19 0 19 0.013 3 2 min -0.201 3 -0.107 4 -0.408 4 0 1 0 1 -0.008 18 3 N18 max 0.216 10 4.427 7 0.005 19 0 19 0 19 0 19 4 min -0.307 3 0.089 3 -0.032 13 0 1 0 1 0 1 5 N17 max 0.015 10 2.758 7 0.015 11 0 19 0.007 18 0 19 6 min -0.022 3 -0.252 4 -0.022 4 0 1 -0.011 3 0 1 7 N6 max 0.139 18 4.124 7 2.759 7 0 19 0 19 0.013 3 8 min -0.203 3 -0.232 3 -0.458 4 0 1 0 1 -0.01 10 9 N16 max 0.005 12 4.902 7 0.007 11 0 19 0 19 0 19

10 min -0.01 3 -0.064 3 -0.01 4 0 1 0 1 0 1 11 N21 max 0.004 18 0.778 7 0.106 19 0 19 0 19 0 19 12 min -0.51 12 0 4 -1.385 13 0 1 0 1 0 1 13 N14 max 3.229 13 0.565 15 -0.012 19 0 19 0 19 0 19 14 min -0.807 3 -0.22 4 -2.505 7 0 1 0 1 0 1 15 N10 max 0.074 3 0.509 7 0.034 3 0 19 0 19 0 19 16 min -3.153 13 0 3 -0.934 13 0 1 0 1 0 1 17 N23 max 0.505 14 0.781 7 0.099 19 0 19 0 19 0 19 18 min -0.286 3 -0.004 3 -1.701 13 0 1 0 1 0 1 19 N19 max 0.656 10 0 19 -0.005 3 0 19 0 19 0 19 20 min -0.91 3 0 1 -0.095 7 0 1 0 1 0 1 21 Totals: max 1.964 18 23.496 7 1.964 11 22 min -2.806 3 0 3 -2.806 4

Envelope Node Displacements Node Label X [in] LC Y [in] LC Z [in] LC X Rotation [rad] LC Y Rotation [rad] LC Z Rotation [rad] LC

1 N1 max 0 3 0 4 0 4 2.163e-3 7 8.866e-3 3 0 18 2 min 0 18 0 7 0 7 -1.805e-5 3 -6.395e-3 10 0 3 3 N2 max 0.308 3 0.001 3 0.022 7 1.824e-5 3 4.329e-4 18 1.106e-3 3 4 min -0.22 10 -0.044 7 -0.001 3 -1.477e-3 7 -6.812e-4 3 -1.776e-3 14

1.21

Job Number Model Name

MSC Engineers Inc

JAC

240815 Stair 1

Checked By : CBS

2/2/2026

2:29:41 PM

RISA-3D Version 23 [ Stair.r3d ] Page 8

Envelope Node Displacements (Continued) Node Label X [in] LC Y [in] LC Z [in] LC X Rotation [rad] LC Y Rotation [rad] LC Z Rotation [rad] LC

5 N3 max 0.306 3 0 3 0.021 7 6.358e-4 7 2.352e-4 18 8.82e-4 3 6 min -0.222 10 -0.03 7 -0.001 3 2.095e-5 3 -4.782e-4 12 -1.55e-3 14 7 N4 max 0 3 0.001 4 0.004 7 7.362e-6 18 4.864e-4 18 6.052e-4 3 8 min -0.001 14 -0.011 7 0 3 -3.101e-4 7 -6.995e-4 3 -6.042e-4 14 9 N5 max 0 13 0.001 3 0.003 13 4.187e-4 14 2.274e-5 12 2.812e-4 14

10 min 0 3 -0.026 14 0 3 -3.601e-5 3 -4.814e-6 18 -2.969e-5 3 11 N6 max 0 3 0 3 0 4 2.356e-3 7 8.866e-3 3 0 10 12 min 0 18 0 7 0 7 1.923e-5 3 -6.149e-3 18 0 3 13 N7 max 0.308 3 -0.001 3 0.031 7 -1.871e-5 3 4.616e-4 18 1.423e-3 12 14 min -0.22 10 -0.055 7 0.001 3 -1.649e-3 7 -6.906e-4 3 -5.733e-4 18 15 N8 max 0.306 3 0 3 0.031 7 7.299e-4 7 8.32e-5 18 9.26e-4 7 16 min -0.222 10 -0.038 7 0.001 3 -2.047e-6 3 -1.388e-4 12 -7.385e-5 3 17 N9 max 0 3 0.001 3 0.004 7 2.099e-4 7 2.314e-4 7 5.109e-4 14 18 min 0 14 -0.003 14 0 19 1.293e-5 4 2.041e-6 19 -1.397e-4 3 19 N10 max 0 13 0 3 0 13 1.457e-7 4 0 19 5.148e-4 14 20 min 0 3 0 7 0 3 -1.199e-5 7 0 1 -2.37e-5 3 21 N11 max 0.307 3 0 3 0.021 7 2.13e-5 3 0 19 -5.42e-5 4 22 min -0.221 10 -0.012 7 -0.001 3 -1.487e-4 13 0 1 -1.253e-3 7 23 N12 max 0.307 3 0 3 0.031 7 -1.219e-5 3 1.04e-5 18 1.378e-3 7 24 min -0.221 10 -0.019 7 0.001 3 -2.51e-4 7 -1.077e-4 12 7.477e-6 3 25 N13 max 0.001 18 0.001 4 0.003 13 1.639e-4 10 2.06e-4 3 1.971e-4 3 26 min -0.001 3 -0.008 7 0 3 -1.084e-4 2 -1.376e-4 18 -2.39e-3 7 27 N14 max 0 3 0 4 0 7 6.397e-6 7 0 19 6.139e-4 14 28 min 0 13 0 15 0 19 8.559e-8 4 0 1 -1.718e-4 3 29 N15 max 0.307 3 0 3 0.031 7 -2.769e-5 3 0 19 5.729e-3 3 30 min -0.221 10 -0.008 7 0.002 3 -5.763e-4 7 0 1 -4.127e-3 10 31 N16 max 0 3 0 3 0 4 2.75e-4 13 0 19 2.117e-3 10 32 min 0 12 0 7 0 11 -1.11e-4 19 0 1 -2.943e-3 3 33 N17 max 0 3 0 4 0 4 4.031e-4 4 0 3 2.742e-4 10 34 min 0 10 0 7 0 11 -2.789e-4 19 0 18 -3.907e-4 3 35 N18 max 0 3 0 3 0 13 7.075e-4 7 0 19 5.058e-3 10 36 min 0 10 0 7 0 19 2.741e-5 19 0 1 -7.022e-3 3 37 N19 max 0 3 0 3 0 7 -4.825e-5 3 0 19 9.808e-3 3 38 min 0 10 -0.008 7 0 3 -1.004e-3 7 0 1 -7.067e-3 10 39 N20 max 0 12 0.001 4 0.003 13 3.768e-4 14 3.066e-5 10 4.047e-6 3 40 min 0 18 -0.016 15 0 3 -3.605e-5 3 -3.999e-5 3 -2.865e-3 7 41 N21 max 0 12 0 4 0 13 4.83e-6 7 2.871e-6 7 3.736e-3 7 42 min 0 18 0 7 0 19 -3.545e-8 4 -1.948e-8 4 -1.198e-5 4 43 N22 max 0 18 0.001 4 0.003 13 2.166e-4 10 1.626e-4 3 6.109e-5 3 44 min 0 12 -0.009 7 0 3 -5.294e-5 2 -1.089e-4 18 -3.085e-3 7 45 N23 max 0 3 0 3 0 13 -7.196e-8 4 -4.127e-8 4 3.734e-3 7 46 min 0 14 0 7 0 19 -4.032e-6 7 -2.54e-6 12 -4.297e-5 3 47 N24 max 0 3 0.001 3 0.001 13 2.63e-3 7 1.03e-4 7 2.305e-3 7 48 min 0 14 -0.045 7 0 3 1.884e-5 4 -3.932e-6 3 -3.231e-5 3 49 N25 max 0 3 0.002 3 0.001 7 5.153e-4 7 -7.899e-6 19 4.164e-4 14 50 min 0 14 -0.008 14 0 19 3.221e-5 4 -3.134e-4 7 -1.089e-4 3 51 N26 max 0 3 0.001 3 0.002 13 3.612e-3 7 5.777e-5 7 8.568e-5 15 52 min 0 13 -0.063 7 0 3 2.132e-5 4 -4.797e-6 3 -1.324e-5 4 53 N27 max 0 3 0.003 3 0.002 13 6.478e-4 7 1.158e-4 7 1.872e-4 7 54 min -0.001 14 -0.012 14 0 3 3.017e-5 4 5.773e-7 3 -2.357e-5 3 55 N28 max 0 19 0.001 3 0.003 13 2.614e-3 7 1.396e-5 4 2.569e-5 3 56 min 0 13 -0.048 7 0 3 1.497e-5 4 -5.169e-5 12 -2.105e-3 7 57 N29 max 0 3 0.003 3 0.003 13 3.194e-4 12 5.149e-5 7 1.042e-4 3 58 min -0.001 14 -0.013 7 0 3 1.656e-5 4 -8.636e-6 3 -1.157e-4 10 59 N30 max 0 12 0 4 0.001 13 -1.426e-5 4 9.87e-5 7 2.352e-3 7

1.22

Job Number Model Name

MSC Engineers Inc

JAC

240815 Stair 1

Checked By : CBS

2/2/2026

2:29:41 PM

RISA-3D Version 23 [ Stair.r3d ] Page 9

Envelope Node Displacements (Continued) Node Label X [in] LC Y [in] LC Z [in] LC X Rotation [rad] LC Y Rotation [rad] LC Z Rotation [rad] LC

60 min 0 18 -0.046 7 0 3 -2.598e-3 7 -3.044e-6 3 -1.453e-5 4 61 N31 max 0 13 0 4 0.002 13 -1.632e-5 4 5.711e-5 7 2.108e-4 15 62 min 0 19 -0.065 7 0 3 -3.486e-3 7 -4.68e-6 3 -1.532e-5 4 63 N32 max 0 12 0.001 4 0.002 13 -1.486e-5 4 1.301e-5 4 -1.19e-5 3 64 min 0 18 -0.052 7 0 3 -2.26e-3 7 -5.181e-5 15 -1.917e-3 7 65 N33 max 0 13 0 3 0.001 13 8.703e-6 4 5.502e-5 13 4.671e-4 14 66 min 0 3 -0.007 14 0 3 -5.993e-4 7 -3.344e-6 3 -2.366e-5 3 67 N34 max 0 13 0.001 3 0.002 13 7.332e-6 4 5.053e-5 13 4.331e-4 14 68 min 0 3 -0.014 14 0 3 -7.626e-4 7 -4.15e-6 3 -2.359e-5 3 69 N35 max 0 13 0.001 3 0.002 13 3.758e-6 4 4.328e-5 13 3.973e-4 14 70 min 0 3 -0.02 14 0 3 -3.928e-4 7 -4.541e-6 3 -2.35e-5 3 71 N36 max 0.307 3 0 3 0.029 7 3.13e-5 18 -2.945e-6 18 5.5e-4 7 72 min -0.221 10 -0.032 7 0.001 3 -2.765e-4 12 -1.91e-4 12 -1.043e-5 3 73 N37 max 0.308 3 -0.004 4 0.029 7 -1.987e-4 4 1.07e-4 18 6.57e-4 14 74 min -0.22 10 -0.065 7 0.001 3 -2.883e-3 7 -2.39e-4 12 -2.931e-4 3 75 N38 max 0.307 3 0 3 0.026 7 7.346e-6 18 -8.576e-7 18 -1.637e-5 4 76 min -0.221 10 -0.034 7 0 3 -2.451e-4 12 -1.764e-4 12 -2.318e-4 7 77 N39 max 0.308 3 0 3 0.026 7 8.865e-5 3 -8.399e-6 4 2.524e-4 18 78 min -0.22 10 -0.068 7 0 3 -2.485e-3 7 -1.815e-4 7 -4.184e-4 3 79 N40 max 0.307 3 0 3 0.024 7 -4.614e-6 3 -2.084e-6 18 -1.987e-5 3 80 min -0.221 10 -0.026 7 -0.001 3 -1.972e-4 13 -1.832e-4 12 -8.139e-4 7 81 N41 max 0.308 3 0.005 3 0.024 7 4.096e-4 3 9.701e-5 18 1.588e-5 18 82 min -0.22 10 -0.06 7 -0.001 3 -2.898e-3 7 -2.725e-4 12 -1.029e-3 12 83 N42 max 0.306 3 0.002 3 0.029 7 1.97e-3 7 2.758e-5 18 6.622e-4 14 84 min -0.222 10 -0.048 7 0.001 3 -1.036e-4 3 -1.479e-4 12 -2.418e-4 3 85 N43 max 0.306 3 0.005 3 0.026 7 1.59e-3 7 -3.77e-6 18 5.866e-5 18 86 min -0.222 10 -0.052 7 0 3 -3.44e-4 3 -1.815e-4 12 -2.122e-4 12 87 N44 max 0.306 3 0.005 3 0.024 7 2.025e-3 7 3.823e-5 18 6.107e-5 3 88 min -0.222 10 -0.045 7 -0.001 3 -4.351e-4 3 -2.787e-4 12 -8.966e-4 7

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1.25

1.26

1.27

1.28

1.29