- •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)
Section 2 Riveted Joints
-- • —■ ... - ' »
Articles. Material of Rivets
Materials used for rivets shall be in accordance with JIS G 3104 (1976) - Steel Bars for Rivets.
The combination of materials of rivets and parent metals shall in principle be as listed in Table 5.8-1.
Table 5.8-1 Combination of Materials, of Rivets and Parent Metals
•—Materials of rivets
" —i
Parent metals _
Materials of rivets
SV34 or SV41
- SV41
Rolled steels for general structure
SS4I
SS50
Rolled steels for welded structure
SM41
SM50, SM50Y
SM53.SM58
_Hot-rolled atmospheric corrosion resisting steels for welded structure
SMA4I
SMA50, SMA58
Carbon steel and molybdenum alloy steel plates for boilers and other pressure vessels
SB42, SB46 SB46M
SB49, SB49M
Steel plates for pressure vessels for intermediate temperature service
SPV24
SPV32, SPV50
Carbon steel castings
—
SC37 - SC55
Steel castings for welded structure
—
SCW42 ~ SCW63
Carbon steel forgings for general use
—
SF40A - SF60A
SF55B - SF60B
'Description: Omitted
Article 9. Shape of Rivets
For riveted joints, rivets having proper shapes suitable for the purposes shall be used. As a rule, the rivets used for steel penstocks, hydraulic gates and steel structures shall be of round head or oval countersunk head types.
i
Description: Omitted
Article 10. Riveted Joint
The strength of rivets to be used for the design calculation shall be either shearing strengths of rivets or bearing strengths of members by rivets, whichever is smaller. •
Rivet holes shall be a nominal diameter plus 1mm fof those having less than 16mm nominal diameters, and plus 1.5mm for those having more than 19mm nominal diameters.
In addition to those specified in Section 1, other considerations should be directed to riveted joints.
Description: Omitted
Article 11. Riveting
Before riveting, the contact faces shall be thoroughly cleaned, the rivet holes accurately aligned, and the contact faces sufficiently tightened by temporary bolts.
A rivet hammer shall be used for riveting. As a rule, an air rivet holder shall be used as a rivet holder.
Rivets applied shall fill the holes and the rivet heads shall be of the specified shapes, and rivets shall be free from any defects such as looseness, overheating, detrimental cracks, separation, etc.
Defective rivets shall be removed and replaced.