2-11
C A U T I O N
A capacity load may be carried on the boom, or a capacity load may be carried on the
deck. DO NOT carry capacity deck loads and capacity boom loads at the same time.
C A U T I O N
The capacities of this crane are based on all outriggers being FULLY EXTENDED to a
FIRM, LEVEL surface. The crane may tip at less than capacity loads if operated in the
following manner:
A. Outriggers only partially extended and resting on curbing, shoring, etc. If the
outriggers are not all the way DOWN, they are not all the way OUT.
B. Outriggers extended to a surface that appears to be firm, but is unable to support
the outrigger pad at full rated loads. Examples of this type surface are:
1. Thin or cracked blacktop or concrete.
2. Dirt that appears dry and firm on top, but is moist or unpacked beneath
the surface.
3. Dirt with a frozen but thin crust.
C. Crane operated on a hill or sloping surface. Crane will tip at less than rated
capacity when load is lifted on downhill side.
CAPACITY EXAMPLE
Refer to the IC-35-2F Capacity Chart on the following page. A load weighing 4500
pounds (2040 kg) is to be lifted onto the deck of the crane for transport to a new
location. The closest we can get to the load is at a 6 foot (1.83 m) load radius over the
side. We see on the chart that 4000 pounds (1815 kg) is the maximum load on one-part
line, so the sheave block is required. The charts show the weight of the standard
sheave block to be 60 pounds (27 kg). The rigger says that two slings are required,
weighing a total of 40 pounds (18 kg). The total load is 4500+60+40=4600 pounds
(2086 kg).
Looking at the 360° ROTATION, ON RUBBER column we see that the load is too heavy
for this condition. The OVER THE FRONT, ON RUBBER column shows that we can lift
5100 pounds (22120 kg) at a 6 foot (2 m) load radius. However, we cannot get that
close to the load, so the load cannot be lifted this way. This leaves the ON
OUTRIGGERS columns. The outriggers should always be used whenever possible
anyway. We see that we can lift up to 5850 pounds (2420 kg) at a 6 foot (2 m) load
radius, either over the front or over the side Checking the chart again, we see that the
load is within the deck load limit of 6000 pounds (2720 kg). Note: The travel speed with
the load must be limited to 3 mph (4 km/h) -- or less if conditions dictate.
REMEMBER THAT AS THE BOOM IS LOADED, DEFLECTION OF THE BOOM,
TIRES, ETC., WILL INCREASE THE LOAD RADIUS. SO BE CONSERVATIVE IN
YOUR CAPACITY ESTIMATE.
Courtesy of Crane.Market
To Next Page
Loading...
