Upload
thamaraikani-mani
View
276
Download
1
Embed Size (px)
Citation preview
8/13/2019 Crane, Rigging & Lifting Marlon Arq
1/56
PowerPointPresentation
Chapter 5Rigging
Rigging Calculating Load Weights Slings Rope Webbing Round (Tubular) Slings Chain Rigging
Component Inspection Rigging Equipment Storage
Rigging Component Recordkeeping
8/13/2019 Crane, Rigging & Lifting Marlon Arq
2/56
Chapter 5Rigging
The shape of a load
normally determines
its center of gravity.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
3/56
Chapter 5Rigging
A load lifted outside its
center of gravity will
shift to create excess
side stress on one
sling.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
4/56
Chapter 5Rigging
A load may be unstable
and subject to topping if
lifting equipment is placed
below the horizontal
weight center of the load.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
5/56
Chapter 5Rigging
Stock material weight tables
list the weight of materials by
ft, sq ft, or cu ft.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
6/56
Chapter 5Rigging
Numbers may
be rounded off
to allow rapid
material weight
calculations.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
7/56
Chapter 5Rigging
Main sling
components
include wire
rope, fiber
rope, chain,webbing, and
round sling.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
8/56
Chapter 5Rigging
Other sling
components
include rigging
hardware
attachments suchas clips, hooks,
eyebolts,
shackles,
sockets, wedgesockets, triangle
choker fittings,
and master links.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
9/56
Chapter 5Rigging
Basic slings include
vertical (single-leg),
choker, U, basket,
and bridle.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
10/56
Chapter 5Rigging
Tension
increases and
load capacity
decreases as
sling legswiden and
sling angles
are reduced.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
11/56
Chapter 5Rigging
Fiber rope is constructed by
twisting fibers into yarn, yarn
into strands, and strands into
rope. Wire rope is constructed
by twisting wires into strandsaround a wire core.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
12/56
Chapter 5Rigging
The diameter of wire rope is
determined by the largest
possible outside dimension.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
13/56
Chapter 5Rigging
Moisture,
temperature,
chemical activity,
and bending reduce
rope strength.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
14/56
Chapter 5Rigging
Rope bending
efficiency rating
increases as the
diameter of the
pulley increases.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
15/56
Chapter 5Rigging
The most common wire
ropes used for basic
rigging are filler wire,
Warrington, Seale, and
Warrington-Seale.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
16/56
Chapter 5Rigging
The strength of rope used for safely lifting a load is
determined by its breaking strength.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
17/56
Chapter 5Rigging
Rated strength
capacities of 6 19 wire
rope are based on the
rope diameter and sling.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
18/56
Chapter 5Rigging
Seizing is the wrapping placed around all strands of a
rope near the area where the rope is cut.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
19/56
Chapter 5Rigging
Common wire rope terminations include thimbles
and sockets.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
20/56
Chapter 5Rigging
Clip connections
must be arranged,
spaced, and
assembled properly
to maintain thestrength of the rope.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
21/56
Chapter 5Rigging
Proper installation
of a wedge socket
has the live end of
a rope in line with
the socket.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
22/56
Chapter 5Rigging
Synthetic fibers are generally stronger than natural fibers.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
23/56
Chapter 5Rigging
Fiber rope is
constructed by twisting
fibers into yarn, yarn
into strands, and
strands into rope.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
24/56
Chapter 5Rigging
Most rope hitching and knotting terminology was
derived from nautical (sailing) terms.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
25/56
Chapter 5Rigging
Whipping is tightly binding
the end of a rope with
twine before it is cut.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
26/56
Chapter 5Rigging
A splice is the joining of two rope ends to form a
permanent connection.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
27/56
Chapter 5Rigging
Crowning is a reverse strand splice that is used when
an enlarged rope end is desired or not objectionable.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
28/56
Chapter 5Rigging
An eye loop isa rope splice
containing a
thimble.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
29/56
Chapter 5Rigging
Half hitch and double hitch knotsare not secure knots, but are the
base formation of other knots.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
30/56
Chapter 5Rigging
A slip knot is a knot thatslips along the rope from
which it is made.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
31/56
Chapter 5Rigging
A bowline knot is aknot that forms a
loop that is secure
but is easy to
release.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
32/56
Chapter 5Rigging
A wagoneers hitch knot isa knot that creates a load-
securing loop from the
standing part of the rope.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
33/56
Chapter 5Rigging
A timber hitch is a binding knotand hitch combination used to
wrap and drag lengthy material.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
34/56
Chapter 5Rigging
A clove hitch is a quickly-formedhitch used to secure a rope
temporarily to an object.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
35/56
Chapter 5Rigging
A cats-paw hitch is a quickly-formed eye for light-duty lifting.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
36/56
Chapter 5Rigging
A cow hitch is a hitch used tosecure a tag line to a load.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
37/56
Chapter 5Rigging
A scaffold hitch is used tosupport planks or beams.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
38/56
Chapter 5Rigging
A blackwall hitch is ahitch made for securing
a rigging rope to a
hosting hook.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
39/56
Chapter 5Rigging
Webbing is a fabric of high-tenacity synthetic yarns
woven into flat narrow straps.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
40/56
Chapter 5Rigging
Basic sling typesare classified as
Type I through
Type IV.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
41/56
Chapter 5Rigging
Sling load capacities vary based on the sling angles.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
42/56
Chapter 5Rigging
Choker hitch loadcapacity is based on
the angle of choke
as the sling body
passes through thechoke eye.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
43/56
Chapter 5Rigging
The type of web slingselected and its use
must be made with
safety as the main
consideration.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
44/56
Chapter 5Rigging
Round slings areslings consisting
of one or more
continuous
polyester fiberyarns wound
together to make
a core.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
45/56
Chapter 5Rigging
Chain should beremoved from
service if the
measurement of
used chainexceeds 1 1/2%
elongation from
that of new chain.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
46/56
Chapter 5Rigging
Each chain, except for hoist apparatus chain, has aperiodic embossing of a grade number or letter,
indicating its capability.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
47/56
Chapter 5Rigging
Working load limits for slings using Grade 80 chaincan be determined for a 90vertical load or quad leg
load up to 30pull angle.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
48/56
Chapter 5Rigging
A shackle is a U-shaped metallink with the ends drilled to
receive a pin or bolt.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
49/56
Chapter 5Rigging
A master link is a chainattachment with a ring
considerably larger than that
of the chain to allow for the
intersection of a hook.
8/13/2019 Crane, Rigging & Lifting Marlon Arq
50/56
Chapter 5Rigging
A hook is a curved or bentimplement for holding,
pulling, or connecting
another implement.
Ch 5 Ri i
8/13/2019 Crane, Rigging & Lifting Marlon Arq
51/56
Chapter 5Rigging
Hoisting hooks used forrigging purposes include
choker, grab, foundry,
swivel, and sorting hooks.
Ch 5 Ri i
8/13/2019 Crane, Rigging & Lifting Marlon Arq
52/56
Chapter 5Rigging
A hoisting hook isa steel alloy hook
used for
overhead lifting
and is connecteddirectly to the
piece being lifted.
Ch 5 Ri i
8/13/2019 Crane, Rigging & Lifting Marlon Arq
53/56
Chapter 5Rigging
Kinking, core protrusion,and bird caging may be
encountered when
inspecting a wire rope.
Ch t 5 Ri i
8/13/2019 Crane, Rigging & Lifting Marlon Arq
54/56
Chapter 5Rigging
Fiber rope inspection ismade to remove a rope
from service before the
ropes condition poses a
hazard with continuedoperation.
Ch t 5 Ri i
8/13/2019 Crane, Rigging & Lifting Marlon Arq
55/56
Chapter 5Rigging
Webbing shouldbe inspected at
least annually
and round slings
should beinspected
monthly.
Ch t 5 Ri i
8/13/2019 Crane, Rigging & Lifting Marlon Arq
56/56
Chapter 5Rigging
Chain should beinspected annually.