- •Section 1 General
- •Material and Allowable Stress
- •Pressure Lining Part
- •I: Interval of stiffeners (cm)
- •It: Moment of inertia of stiffener (cm4)
- •V: Coefficient of kinetic viscosity of flow for water at 20°c 1.0 X io-6 (m2/s)
- •Attachment Installations
- •28 Days design standard strength of concrete (kgf/cm2)
- •Chapter 2 hydraulic gate Section 1 General 1
- •Gate Leaf, Gate. Guide and Anchorage
- •13 : Temp, rising ratio 5.6°c/h (10°f/h) c : Temp, rising ratio 8.4°c/h (15°f/h)
- •Gate Hoist
- •I: Geometrical moment of inertia (cm4) I: Distance between supports of a spindle (cm)
- •Fixed Wheel Gate
- •Radial Gate
- •Long Span Gate
- •Bottom Hinge Flap Gate
- •High Pressure Gates and Valves
- •Velocity of flow
- •Selective Water Withdrawal Equipment and Surface Water Withdrawal Equipment
- •XGatc leaf
- •Trash Rack
- •Section 1 General
- •Section 3 Fabrication and Installation
- •Test piece width/test piece thickness (w/t) Standard tensile strength of hand welding joint
- •Standard tensile strength of automatic welding joint
- •Example (1) Net width of the arrangement of tightening holes as il- lustrated in Fig. 5.6-1 is as follows:
- •Section 2 Riveted Joints
- •Table 5.8-1 Combination of Materials, of Rivets and Parent Metals
- •Section 3 High Strength Bolt Joints
- •Table 5.16-1 Correction of Offset
- •Table 5.16-4 Torque Coefficient
- •. Section 4 Bolted Connections
- •Chapter 6 safety and sanitation
- •I: Geometrical moment of inertia of wheel rail (cm4)
XGatc leaf
Fig. 2.69-1 Dynamic Water Pressure
Article 70. Safety Guard Equipment for Gate Leaf
FOR 1
Chapter 1 STEEL PENSTOCKS 7
Section 1 General 7
Section 2 Design 4
Description, 19
2. Material and Allowable Stress 31
Description: 31
3. Pressure Lining Part 46
P‘=2-59£-7&: . 48
(cwlT+U^V.- 51
Description: 56
4. Attachment Installations 91
Description: 97
Section 3 Manufacture 101
Section 4 Installation 107
Section 5 Maintenance 119
Section 6 Anchor Block and Support 127
Chapter 2 HYDRAULIC GATE 137
Section 2 Outline of Design 153
2. Gate Leaf, Gate. Guide and Anchorage 162
Description: 196
Description: 201
3. Gate Hoist 201
Description: 202
Description: 205
Description: 206
Description: 206
Description: 210
Section 3 Design Particulars 213
1. Fixed Wheel Gate 213
Description: 223
—~p 223
F=p.r(q + Pb)Ll 224
2. Radial Gate 225
Description: 225
Description: 226
Description: • 1 228
3. Long Span Gate 229
Description: 221
4. Bottom Hinge Flap Gate 222
Description: 222
Description: 224
5. High Pressure Gates and Valves 226
Description: 226
Description: 229
6. Selective Water Withdrawal Equipment and Surface Water Withdrawal Equipment 235
Description: 235
Description: 236
Description: 236
7. Trash Rack 240
Description: 241
Section 4 Manufacture 245
Description: * 245
Description: 245
Section 5 Installation 246
Description: ' ' : ''f. .1.... ' .a? a ' 247
Description: 247
Description: 248
Description: 254
Description: 256
Section 6 Inspection 257
Description: 258
Section 7 Maintenance 259
Description: 259
Description: 259
Description: 259
Description: 260
Description:. - 260
Description: 261
Description: 261
Description: 262
Description: 262
. Chapter 3 STEEL STRUCTURE 269
Description: 269
Description: 269
Section 2 Design 269
Description: 270
Description: 270
Description: 270
Description: - ■ ' 271
Description: 273
Chapter 4 WELDING 274
Section 1 General 274
Description: 274
Description: - 277
Description: 292
Section 2 Welded Joint 296
Description: 296
Description: 289
Description: 293
Description: ".'A • 295
Description: 297
Description: 298
Description: ; ■ 300
Section 3 Welding Procedure 302
Description: 302
Description: 305
Description: 307
Description: 308
Description: 309
Description: 309
Description: 311
Description: 313
Description: 313
f 313
Description: 315
Description: 323
Section 4 Heat Treatment 327
Section 5 Test and Inspections 334
» Description: 335
Description: 336
Chapters 340
RIVETED, HIGH STRENGTH BOLTED AND BOLTED CONNECTIONS 340
Section 1 General 340
19. Description: 358
79. Description: Omitted 352
81. Description: Omitted 352
84. Description: Omitted 352
111. Description: 354
193. Description: 359
198. . Section 4 Bolted Connections 361
217. Chapter 6 SAFETY AND SANITATION 365
However, there exists a fear that the required intake of water cannot • be obtained because of a sharp drop in the water level of the reservoir, the failure of an automatic operating device, operation delays, erroneous operations, foreign matter lodged in the gate, etc. which lead to a rapid decrease in the water level inside the tower and result in placing the structure in a dangerous situation.
Either a safety device which monitors the water level inside and outside the tower and gives a warning if it exceeds the design value and then stops the water intake, or a guard gate which operates automatically by hydraulic pressure should be provided.
Without such equipment, a design should 6e made for the total waterhead. In this case, the allowable stress can be increased by 50%. In addition, the safety factor against critical buckling pressure by the total waterhead should be more than 1.0 for a cylinder.