AWWA D100 2011

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AWWA D100-11: Welded Carbon Steel Tanks For Water Storage

Published By	Publication Date	Number of Pages
AWWA	2011	236

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Description

The purpose of this standard is to provide guidance to facilitate the design, manufacture, and procurement of welded carbon steel tanks for the storage of water.

PDF Catalog

PDF Pages	PDF Title
1	ANSI/AWWA D100-11
3	Committee Personnel
5	Contents
13	Foreword I. Introduction.
19	II. Special Issues. III. Use of This Standard.
27	IV. Major Revisions. V. Comments.
29	AWWA Standard Welded Carbon Steel Tanks for Water Storage SECTION 1: GENERAL Sec. 1.1 Scope
30	Sec. 1.2 Definitions Sec. 1.3 Drawings to Be Provided
31	Sec. 1.4 References
35	SECTION 2: MATERIALS Sec. 2.1 General Sec. 2.2 Material Requirements
36	Table 1 Thickness limitations and special requirements
38	SECTION 3: GENERAL DESIGN Sec. 3.1 Design Loads
40	Table 2 Force coefficient Table 3 Velocity pressure exposure coefficient
48	Sec. 3.2 Unit Stresses Table 4 Material classes
49	Table 5 Unit stresses—tension Sec. 3.3 Combined Stresses
50	Table 6 Unit stresses—compression Table 7 Unit stresses—primary bending
51	Table 8 Unit stresses—shearing Table 9 Unit stresses—bearing
52	Sec. 3.4 Allowable Compressive Stresses for Columns, Struts, and Shells
57	Table 10 Allowable local buckling compressive stress
58	Table 11 Allowable local buckling compressive stress
59	Table 12 Allowable axial compressive stress
60	Table 13 Allowable axial compressive stress
62	Table 14 Values
65	Sec. 3.5 Shell Girder, Intermediate Stiffeners, and Compression Rings
67	Sec. 3.6 Roofs
69	Sec. 3.7 Cylindrical Shell Plates Sec. 3.8 Anchorage
70	Table 15 Weld design values—tank plate joints
75	Sec. 3.9 Corrosion Allowance and Protection Sec. 3.10 Minimum Thickness and Size
76	Table 16 Minimum thickness of cylindrical shell plates in contact with water
77	Sec. 3.11 Joints Sec. 3.12 Weld Design Values
78	Sec. 3.13 Reinforcement Around Openings
80	Sec. 3.14 Equivalent Metric Equations
81	SECTION 4: SIZING AND DESIGN OF ELEVATED TANKS Sec. 4.1 Standard Capacities Table 17 Standard capacities for elevated tanks
82	Sec. 4.2 Heights for Elevated Tanks Sec. 4.3 Standard Head Range Sec. 4.4 Cross-Braced, Multicolumn Elevated Tanks
84	Sec. 4.5 Tank Plates
85	Sec. 4.6 Pedestal Tanks Sec. 4.7 Tank Stability Against Overturning Sec. 4.8 Lateral Load Distribution SECTION 5: ACCESSORIES FOR ELEVATED TANKS Sec. 5.1 Steel Riser
86	Sec. 5.2 Pipe Connection Sec. 5.3 Overflow
87	Sec. 5.4 Access
89	Sec. 5.5 Vent Sec. 5.6 Antennas and Related Equipment Sec. 5.7 Galvanic Corrosion SECTION 6: SIZING OF GROUND-SUPPORTED STANDPIPES AND RESERVOIRS
90	SECTION 7: ACCESSORIES FOR GROUND- SUPPORTED STANDPIPES AND RESERVOIRS Sec. 7.1 Flush-Type Cleanouts Sec. 7.2 Pipe Connections Sec. 7.3 Overflow
91	Sec. 7.4 Access
92	Sec. 7.5 Vent
93	Sec. 7.6 Antennas and Related Equipment Sec. 7.7 Galvanic Corrosion SECTION 8: WELDING Sec. 8.1 Definitions and Symbols Sec. 8.2 Qualification of Welding Procedures, Welders, and Welding Operators
94	Sec. 8.3 Weld Joint Records
95	Sec. 8.4 Butt Joints Sec. 8.5 Lap Joints
96	Sec. 8.6 Flat Tank Bottoms Resting Directly on Grade or Foundation Sec. 8.7 Shell-to-Bottom Joint Table 18 Minimum size of fillet weld—shell-to-bottom joint
97	Sec. 8.8 Shell Plates Sec. 8.9 Tubular Column and Strut Sections Sec. 8.10 Steel Risers Sec. 8.11 Roof Plates
98	Sec. 8.12 Maximum Thickness of Material to Be Welded Sec. 8.13 Lap Restrictions for Welded Lap Joints Sec. 8.14 Minimum Size of Fillet and Seal Welds
99	Sec. 8.15 Minimum Length of Welds Sec. 8.16 Intermittent Welding Sec. 8.17 Corrosion Protection SECTION 9: SHOP FABRICATION Sec. 9.1 Workmanship
100	Sec. 9.2 Straightening Sec. 9.3 Finish of Plate Edges—Welded Work Sec. 9.4 Rolling Table 19 Minimum diameter for unrolled shell plates for elevated tanks
101	Sec. 9.5 Double-Curved Plates Sec. 9.6 Columns Sec. 9.7 Shop Assembly Sec. 9.8 High-Strength Anchor Bolts Sec. 9.9 Shipping SECTION 10: ERECTION Sec. 10.1 Welds
102	Table 20 Maximum thickness of reinforcement for butt joints Sec. 10.2 Preparation of Surfaces to Be Welded
103	Sec. 10.3 Preheating Weld Joints
104	Sec. 10.4 Low-Hydrogen Electrodes and Welding Processes Sec. 10.5 Tack Welds Sec. 10.6 Tank Assembly
105	Table 21 Roundness—cylindrical shells
107	Sec. 10.7 Matching Plates Sec. 10.8 Grouting of Column, Riser, and Single-Pedestal Bases for Elevated Tanks Table 22 Maximum allowable offset of aligned butt joints
108	Sec. 10.9 High-Strength Anchors SECTION 11: INSPECTION AND TESTING Sec. 11.1 General Sec. 11.2 Inspection Report Sec. 11.3 Welders’ Credentials Sec. 11.4 Inspection of Welded Joints
112	Sec. 11.5 Number and Location of Radiographs for Butt-Weld Joints in Tank Shells, Load-Bearing Risers, and Single-Pedestal Columns
113	Sec. 11.6 Procedures for Inspection of Welded-Shell Butt Joints—Radiographic Testing
114	Table 23 Maximum height of weld reinforcement of weld for butt joints above plate surface
116	Sec. 11.7 Procedure for Inspection of Groove Welds in Tension Member Bracing by Ultrasonic Inspection Sec. 11.8 Inspection by Air Carbon Arc Gouging Sec. 11.9 Repair of Defective Welds
117	Sec. 11.10 Testing SECTION 12: FOUNDATION DESIGN Sec. 12.1 General Requirements
118	Sec. 12.2 Soil-Bearing Value Sec. 12.3 Safety Factors
119	Sec. 12.4 Foundations for Cross-Braced Multicolumn Tanks
120	Sec. 12.5 Foundations for Single-Pedestal Tanks
121	Sec. 12.6 Foundations for Ground-Supported Flat-Bottom Tanks
124	Sec. 12.7 Detail Design of Foundations
125	Sec. 12.8 Concrete Design, Materials, and Construction Sec. 12.9 Backfill
126	SECTION 13: SEISMIC DESIGN OF WATER STORAGE TANKS Sec. 13.1 General
128	Sec. 13.2 Design Earthquake Ground Motion
129	Table 24 Seismic importance factor
148	Table 25 Site class definitions
151	Table 26 Short-period site coefficient Table 27 Long-period site coefficient
152	Table 28 Response modification factors
163	Sec. 13.3 Cross-Braced Column-Supported Elevated Tanks
165	Sec. 13.4 Pedestal-Type Elevated Tanks
166	Sec. 13.5 Ground-Supported Flat-Bottom Tanks
176	Table 29 Minimum freeboard requirements
177	Sec. 13.6 Piping Connections
178	Table 30 Minimum design displacements for piping attachments
179	Sec. 13.7 Foundation Design for Ground-Supported Flat-Bottom Tanks Sec. 13.8 Equivalent Metric Equations
181	SECTION 14: ALTERNATIVE DESIGN BASIS FOR STANDPIPES AND RESERVOIRS Sec. 14.1 Alternative Design Basis
183	Sec. 14.2 Materials
185	Table 31 Category 1 material requirements for shell plates in contact with water to be used for design metal temperature tabulated
186	Table 32 Category 2 materials Table 33 Category 3 materials
189	Sec. 14.3 General Design
191	Table 34 Maximum design tensile stresses in shell plates in contact with water
192	Sec. 14.4 Inspection
193	Table 35 Minimum thickness of bottom annulus
195	Sec. 14.5 Certification of Compliance
196	CERTIFICATION OF COMPLIANCE WITH REQUIREMENTS OF AWWA D100, SECTION 14
197	APPENDIX A Commentary for Welded Carbon Steel Tanks for Water Storage SECTION A.1: GENERAL (Refer to Sec. 1 of ANSI/AWWA D100) Sec. A.1.1 Scope Sec. A.1.4 References
199	SECTION A.2: MATERIALS (Refer to Sec. 2 of ANSI/AW WA D100) Sec. A.2.2 Material Requirements SECTION A.3: GENERAL DESIGN (Refer to Sec. 3 of ANSI/AW WA D100) Sec. A.3.1 Design Loads
200	Sec. A.3.2 Unit Stresses Sec. A.3.4 Allowable Compressive Stresses for Columns, Struts, and Shells
202	Sec. A.3.5 Shell Girder, Intermediate Stiffeners, and Compression Rings Sec. A.3.6 Roofs
203	Sec. A.3.8 Anchorage
204	Sec. A.3.9 Corrosion Allowance and Protection Sec. A.3.10 Minimum Thickness and Size SECTION A.4: SIZING AND DESIGN OF ELEVATED TANKS (Refer to Sec. 4 of ANSI/AW WA D100) Sec. A.4.4 Cross-Braced, Multicolumn Elevated Tanks Sec. A.4.5 Tank Plates
205	SECTION A.5: ACCESSORIES FOR ELEVATED TANKS (Refer to Sec. 4 of ANSI/AW WA D100) Sec. A.5.1 Steel Riser Sec. A.5.3 Overflow
206	Sec. A.5.4 Access Sec. A.5.5 Vent Sec. A.5.6 Antennas and Related Equipment
209	Sec. A.5.7 Galvanic Corrosion SECTION A.7: ACCESSORIES FOR GROUND- SUPPORTED STANDPIPES AND RESERVOIRS (Refer to Sec. 7 of ANSI/AW WA D100) Sec. A.7.2 Pipe Connections
210	Sec. A.7.3 Overflow Sec. A.7.4 Access Sec. A.7.5 Vent Sec. A.7.7 Galvanic Corrosion
211	SECTION A.8: WELDING (Refer to Sec. 8 of ANSI/AW WA D100) Sec. A.8.2 Qualification of Welding Procedures, Welders, and Welding Operators
212	Sec. A.8.3 Weld Joint Records Sec. A.8.9 Tubular Column and Strut Sections Sec. A.8.13 Lap Restrictions for Welded Lap Joints Sec. A.8.14 Minimum Size of Fillet and Seal Welds Sec. A.8.17 Corrosion Protection SECTION A.9: SHOP FABRICATION (Refer to Sec. 9 of ANSI/AW WA D100) Sec. A.9.4 Rolling
213	SECTION A.10: ERECTION (Refer to Sec. 10 of ANSI/AW WA D100) Sec. A.10.1 Welds Sec. A.10.4 Low-Hydrogen Electrodes and Welding Processes Sec. A.10.6 Tank Assembly
214	SECTION A.11: INSPECTION AND TESTING (Refer to Sec. 11 of ANSI/AW WA D100) Sec. A.11.2 Inspection Report Sec. A.11.4 Inspection of Welded Joints
215	Sec. A.11.10 Testing SECTION A.12: FOUNDATION DESIGN (Refer to Sec. 12 of ANSI/AW WA D100) Sec. A.12.1 General Requirements Sec. A.12.6 Foundations for Ground-Supported Flat-Bottom Tanks
216	Sec. A.12.7 Detail Design of Foundations SECTION A.13: SEISMIC DESIGN OF WATER STORAGE TANKS (Refer to Sec. 13 of ANSI/AW WA D100) Sec. A.13.1 General
217	Sec. A.13.2 Design Earthquake Ground Motion
218	Table A.1 Seismic use group
220	Sec. A.13.3 Cross-Braced Column-Supported Elevated Tanks Sec. A.13.4 Pedestal-Type Elevated Tanks
221	Sec. A.13.5 Ground-Supported Flat-Bottom Tanks
224	Sec. A.13.6 Piping Connections
225	SECTION A.14: ALTERNATIVE DESIGN BASIS FOR STANDPIPES AND RESERVOIRS (Refer to Sec. 14 of ANSI/AW WA D100) Sec. A.14.1 Alternative Design Basis
226	Sec. A.14.2 Materials Sec. A.14.3 General Design
227	APPENDIX B Default Checklist