ASME B18.15-2015 pdf download

ASME B18.15-2015 pdf download.Forged Eyebolts.
9 DESIGNATION
Eyebolts shall be designated by the following data in the sequence shown below:
(a) ASME B18.15
(b) nominal size (fractional or decimal equivalent) and threads per inch
(c) pattern
(d) type
(e) style
(0 material (including standard), including alloy type if stainless steel
(g) surface treatment (when specified including standard number), including required callout from standard
EXAMPLE: ASME B18.15, 416, plain pattern (straight shank), Type 1, Style A, steel per ASTM A489, zinc plated per ASTM F1941 5AT
10 QUALITY ASSURANCE
10.1 Defects
Eyebolts shall be free from visible defects that might affect serviceability. Eyebolts should be routinely visually inspected for such defects according to
ASME B18.18.
10.2 Dimensional Conformance
Unless otherwise specified, all characteristics shall be inspected to the inspection levels shown in
ASME B18.18.
10.3 Tensile Properties
The tensile properties shall be determined in accordance with ASTM F606 using the thread engagements as prescribed in Nonmandatory Appendix C.
10.4 Surface Discontinuities
The inspection and evaluation of surface discontinuities shall be in accordance with the requirements in ASTM F788/F788M. Threads shall have no laps at the root or on the flank located below the pitch diameter.
11 MARKING
Each eyebolt shall have the manufacturer’s name or identification mark forged in raised characters on the surface of the lifting eye.
A-i INTRODUCTION
Two methods are currently used in specifying the capacities of forged steel eyebolts. One is more commonly used by riggers and shop personnel, while the other is generally preferred by engineers and designers of lifting rigs. Care must be exercised in selecting and using the correct type of capacity for each application.
A-2 RIGGER’S CAPACITY
The rigger’s capacity refers to the actual load a single eyebolt can lift. The allowable load varies with the angle between the leg of the lifting rig and the shank of the eyebolt. In general, it also assumes that the load to be lifted acts along the axis through the shank. (The primary exception is where the eyebolts are mounted on the sides of the load.) Rigger’s capacities are most easily used when the eyeholts are mounted on the top of a uniformly distributed load. In such cases, the total load is divided by the number of eyebolts to be used for the lift in order to determine the required capacity, taking into account the angle of the legs of the rig. Figure A-i shows such an application.
B-i ALTERING OF EYEBOLTS
Eyebolts should never be ground, notched, undercut, or welded. Such alterations will weaken the eyebolt. Eyebolts showing signs of having been so altered should immediately be destroyed.
B-2 EXTREME HEAT
Eyebolts should never be subjected to heat in excess of 900°F (480°C). Important physical properties are likely to be changed by such heating, creating an unsafe bolt. Eyebolts having been subjected to such heating should be immediately destroyed.
B-3 HOW TO DESTROY
Eyebolts that are being removed from service should be rendered unusable. Crushing or cutting clear across the eye is recommended.
B-4 ALWAYS STAND CLEAR
Never stand, work, or crawl under the load. If the load could swing, or if the pieces could fly in the event of a drop, allow for this possibility by establishing a safe distance from the load.
B-5 ELONGATION AND BENDING
Any visible bending or elongation of the eyebolt is a danger signal and indicates that it has been stressed beyond rated capacity. The bolt should be removed and destroyed, and the application should be investigated.
B-6 DEFINITION OF RATED CAPACITY
Rated capacity is the maximum recommended load that should be exerted on the item. All rated capacities, unless otherwise noted, are for in-line pull with respect to the centerline of the item.
B-7 DEFINITION OF SAFETY FACTOR
Safety factor is an industry term denoting theoretical reserve capacity. it is usually computed by dividing the catalog-stated ultimate load by the catalog-stated working load limit and generally expressed as a ratio, e.g., 5 to 1.