utilities infrastructure design – preaims issued ......7/24/17 subject: mcmurdo utilities pre aims...
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July 2017
UTILITIES INFRASTRUCTURE DESIGN – PreAIMS ISSUED FOR CONSTRUCTION
CALCULATIONS
McMurdo Station, Antarctica
Submitted to: United States Antarctic Program
Leidos Innovations - Antarctic Support Contract
Submitted by:
Merrick & Company 5970 Greenwood Plaza Blvd.
Greenwood Village, CO 80111 Tel: 303-751-0741 • Fax: 303-751-2581
www.merrick.com
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Project: McMurdo Utilities
Subject: McMurdo Pre AIMS
Project No.: 64017481-77 Calculation No.: CALC-7481-77-S-002
Status: Rev By Date Chk’d Date
Final PIF 7/20/17 JW 7/20/17
Confirmation Required:
Yes No Preliminary Final Void
X X
Technical Calculations
Structural Discipline
Calculation Title:
McMurdo Utilities Pre AIMS Final Structural Calculations
Prepared For: Antarctic Support Contract
Prepared By:
Merrick & Company 5970 Greenwood Plaza Blvd.
Greenwood Village, CO 80111
TITLE SHEET
07/20/1707/20/17
12/31/17
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Subject: McMurdo Utilities Pre AIMS
Project No.: 64017481-77 Calculation No.: CALC-7481-77-S-002 Rev: Final
REVISION CONTROL
Revision Signatures
Prepared by Date Reviewed by Date P Finley, PE, SE J Weaver, PE
Reviewed/Checked by
Date Approved by
Date
Interdisciplinary Coordination Review (ICR)
ICR Complete?
� Yes X N/R Affected Disciplines: Structural
Revision History
Status Rev Date Prepared By
Affected Pages
Description of Changes
TITLE SHEET
7/20/17
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Subject: McMurdo Utilities Pre AIMS
Project No.: 64017481-77 Calculation No.: CALC-7481-77-S-002 Rev: Final
TABLE OF CONTENTS
TITLE SHEET .............................................................................................................................................................. 1
REVISION CONTROL ............................................................................................................................................... 2
TABLE OF CONTENTS ............................................................................................................................................. 3
1.0 INTRODUCTION ........................................................................................................................................... 4
2.0 DESIGN INPUT .............................................................................................................................................. 4
3.0 MATERIALS OF CONSTRUCTION .................................................................................. 5
4.0 METHODOLOGY........................................................................................................................................... 5
5.0 REFERENCES ............................................................................................................................................... 6
6.0 CONCLUSIONS ............................................................................................................................................. 6
7.0 CALCULATIONS ........................................................................................................................................... 6
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Subject: McMurdo Utilities Pre AIMS
Project No.: 64017481-77 Calculation No.: CALC-7481-77-S-002 Rev: Final
1.0 INTRODUCTION
Analysis of Steel structures shall be performed in accordance with the provisions of the International Building Code IBC 2015 as well as all applicable codes associated with IBC 2015. 2.0 DESIGN INPUT
Load Combinations
Allowable Stress Design for Foundations and Deflections 1) 1.0 DL + 1.0 LL 2) 1.0 DL + SL 3) 1.0 DL + .75LL + 75 SL 4) 1.0 DL + 1.0 WL 5) 1.0 DL + 0.75 WL + 0.75 LL + .75 SL 6) 0.6 DL + 1.0 WL
Dead Loads Dead Load .............................................................................................................. 15 psf
Live Loads Ground Snow Load.................................................................................................. 40 psf Floor Live Load Node Bld ........................................................................................ 50 psf
Wind Loads Basic Wind Speed ............................................................................................... 180 mph Exposure ........................................................................................................................ D Risk Category ................................................................................................................ IV
Earthquake Loads (E) Short Period Spectral Accelerations (SS) ....................................................0.454 g 1 Second Spectral Accelerations (S1) .........................................................0.128 g Site Classification .......................................................................................A Seismic Design Category ...........................................................................C Importance Factor- Contingency Ops .........................................................1.50
Foundations and Soils Criteria as per Geotechnical Investigation Report by (Geotechnical Assessment Report – McMurdo Station, Ross Island, Antarctica, Dated May 2016).
Allowable including Allowable Increase for Wind or Seismic Soil Bearing 2,100 psf 2,800 psf Active Pressure 30 pcf Passive Pressure 200 pcf 267 pcf
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Subject: McMurdo Utilities Pre AIMS
Project No.: 64017481-77 Calculation No.: CALC-7481-77-S-002 Rev: Final
3.0 MATERIALS OF CONSTRUCTION
Wood
Douglas Fir Larch No 1: Fb = 1000 psi
Concrete
Precast Foundations f’c = 5000 psi
Reinforcing Steel
Unless noted otherwise ASTM - A615, Grade 60
Welded Rebar, Threaded Rebar ASTM - A706, Grade 60
Smooth Welded Wire Fabric ASTM - A185
Deformed Welded Wire Fabric ASTM - A497
Deformed Bar Anchors ASTM - A496
Structural Steel
Wide Flange Beams ASTM - A992, Grade 50
Wide Flange Columns ASTM - A992, Grade 50
Tubes ASTM - A500 - Grade B
Angles and Channels ASTM - A36
Plates ASTM - A36, or ASTM - A572, Grade 50
Base Plates ASTM - A36
Connection Mat’l, Embedded Plates ASTM - A36
Bolts ASTM - A325
Anchor Bolts ASTM - A1554 Gr 36
Welding Electrodes ASTM - E70xx (U.N.O.)
4.0 METHODOLOGY
The utility structures will be designed to resist lateral loading from wind and seismic along with snow, dead, and live loads in the both directions. Beam elements will be provided at the foundation level to help stiffen the structure to control deflection and to help spread out the frame reactions to the precast concrete foundation. Based upon site conditions, the foundations will be constructed of precast concrete foundations sized for both compression bearing and tension uplift forces. These foundations will bear on compacted grade and bear a min of 18 inches below grade. Utility support bents will be provided where necessary to support above ground piping and cable trays.
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Subject: McMurdo Utilities Pre AIMS
Project No.: 64017481-77 Calculation No.: CALC-7481-77-S-002 Rev: Final
5.0 REFERENCES
International Building Code, International Code Council, 2015. American Society of Civil Engineers, ASCE 7-10 Minimum Design Loads for Buildings and Other Structures, 2010. American Institute of Steel Construction, AISC 14th Edition. National Design Specification (NDS) for Wood Construction with 2012 Supplement
6.0 CONCLUSIONS
Based on the design inputs and stated assumptions, steel structures are being proposed for the required structures necessary for this utility project. See following calculations for supporting data and assumptions for each structure. 7.0 CALCULATIONS
Pages
Node Building 7-24 Utility Support 25-53
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