DEPARTMENT OF VETERANS AFFAIRS VA PROJECT NO. 589A7-21-132

ROBERT J. DOLE VAMC CENTRALIZED EMERGENCY POWER SYSTEM

WICHITA, KANSAS 100% CONSTRUCTION DOCUMENTS: 03/18/2026

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CHAPTER 2

STRUCTURAL

1. GENERAL

A new Centralized Emergency Power System building will be constructed with a size and configuration to satisfy the equipment requirements for emergency power demand for the existing campus and future campus expansions totaling 150,000 square feet. This new blast rated generator building will have the capacity to back up the main electric utility services entering the campus.

2. SCOPE OF WORK

A. Systems to be altered:

1) NA

B. Applicable Codes and Standards:

1) International Building Code – 2024 Edition

2) American Society Of Civil Engineers - Minimum Design Loads For Buildings And Other Structures - ASCE 7-22

3) Department Of Veterans Affairs Seismic Design Requirements H-18-8

4) VA Program Guide Pg-18-10 Structural Design Manual

5) VA Physical Security and Resiliency Design Manual (PSRDM)

6) AISC 360 – Steel Construction Manual – AISC 360-22

7) ACI 318 - American Concrete Institute - Building Code Requirements For Structural Concrete – 318-14

8) ASTM - American Society for Testing And Materials

3. DESIGN APPROACH

A. Design Loads

1) Occupancy Category IV

2) Dead loads for the purpose of structural design are the actual self-weight of the permanent building construction materials.

3) Live loads to be supported are as follows:

Generators Actual Equip Operating Wt.

Roof 40 PSF

Catwalk 40 PSF

Lid 60 PSF

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4) Snow Load:

Ground Snow Load (Pg) 28 PSF

Snow Importance Factor (Is) 1.2

Exposure Factor (Ce) 1.0

Thermal Factor (Ct) 1.174

5) Wind Load:

Basic Wind Speed (3-Sec.) 122 MPH

Exposure Category C

6) Seismic Load:

0.2 Second Response Acceleration (Ss) 0.120g

0.2 Second Design Acceleration (SDS) 0.110g

1 Second Response Acceleration (S1) 0.061g

1 Second Design Acceleration (SD1) 0.087g

Soil Site Classification D (Default)

Seismic Design Category C

Seismic Importance Factor (I) 1.5

B. Design Approach

1) Structural Design: The column layout and structural depths are being coordinated with the proposed building and equipment layouts. Please refer to the structural drawings.

2) The structural systems for the new building will be designed for physical security per the Physical Security and Resiliency Design Manual. The design and details for resiliency will be included in the 90% design development submission.

C. Structural Systems

1) Gravity Systems:

The new one-story structure will consist of columns supporting composite steel beams with 20-gauge 2” steel composite deck and 3” NW concrete (total 5”). The exterior wall will be concrete masonry unit construction. The CMU wall will be 12” thick and reinforced as required by design.

The switchgear room and fire riser room will consist of 8" CMU walls supporting steel beams with 20- gauge 1 1/2" non-composite deck and 3 1/2" LW concrete (total 5")

The columns and wall foundations systems will consist of drilled piers and grade beams at south side of the building where the underground tanks are located and shallow foundation at remaining part of the building.

2) Lateral System:

The lateral systems will be steel concentrically braced frames and moment frames.

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3) Equipment Pads:

Generators will be supported on 24” tall isolated concrete pads.

Remaining equipment will be supported on 4”-6” tall concrete equipment pads.

4) MEP Supports:

Per IBC, the seismic design category has been calculated as Category C. Per Department of Veterans Affairs Seismic Design Requirements H-18-8, dated July 1, 2023, MEP equipment and MEP lines (piping, ductwork, etc.) need to be braced to resist seismic forces and excessive deflections for projects in all new and existing buildings “assigned to Seismic Design Category C, D, E, or F.” The design for bracing is to be performed by the contractor’s engineer. MEP lines and fixtures to be supported are as follows:

a. Equipment weighing equal to/larger than 400 pounds, which is supported directly on the floor or roof.

b. Equipment weighing equal to/larger than 20 pounds, which is suspended from the roof or floor or hung from a wall.

c. Gas and medical piping equal to/larger than 2 ½ inches inside diameter.

d. Piping in boiler plants and equipment rooms equal to/larger than 1 ¼ inches inside diameter.

e. All other piping equal to/larger than 2 ½ inches inside diameter, except for automatic fire suppression systems (all fire suppression piping needs bracing).

f. All piping suspended by individual hangers longer than 12 inches in length from the top of pipe to the bottom of the support for the hanger.

g. All electrical conduits, equal to/larger than 2 ½ inches inside diameter.

h. All rectangular air handling ducts equal to/larger than six square feet in cross sectional area.

i. All round air handling ducts equal to/larger than 28 inches in diameter.

j. All ducts suspended by hangers longer than 12 inches in length from the top of the duct to the bottom of support for the hanger.

D. Structural Materials

1) Steel:

WF Shapes ASTM A992, Gr 50

HSS Shapes ASTM A500, Gr B

Channels/Angles/Plates ASTM A36

2) Concrete:

Drilled Piers 3000 psi

Foundations 4500 psi

Equipment Pads /Slabs 4000 psi

Slab on Deck 4000 psi

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CHAPTER 2