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Tower Crane Loading Calculation

The document provides information about the specifications and center of gravity calculations for an in-service and out-of-service crane. It lists the key load conditions considered for each state, then gives the maximum lifting capacities, speeds, dimensions, and other specifications of the crane. It then shows the counter-clockwise and clockwise moment calculations to find the center of gravity for the in-service and out-of-service conditions, providing the lever arm distances and component weights. The load eccentricity and total moments are reported for each state.

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Franklyn Genove
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3K views5 pages

Tower Crane Loading Calculation

The document provides information about the specifications and center of gravity calculations for an in-service and out-of-service crane. It lists the key load conditions considered for each state, then gives the maximum lifting capacities, speeds, dimensions, and other specifications of the crane. It then shows the counter-clockwise and clockwise moment calculations to find the center of gravity for the in-service and out-of-service conditions, providing the lever arm distances and component weights. The load eccentricity and total moments are reported for each state.

Uploaded by

Franklyn Genove
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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In service condition

* Self weight of the crane

* Lifted Load

* Wind Load
* Dynamic effectrs for hoisting, slewing and trolleying
Out of service condition
* Self weight of the crane
* Wind Load

CRANE SPECIFICATION

* Maximum lifting capacity up to 20.60 m radius 12 MT


* Maximum lifting capacity up to 71.9 m radius 3 MT
* Maximum lifting speed 12 m/min
* Free standing mast height 51.4 m
* Free mast anchorage tie from the base 24.26 m
* Slewing speed (max.) 0.6 r/min
* Slewing torque (max.) 95 N-m
* Trolleying speed 15 m/min
* Maximum possible mast height 225 m
* Maximum jib length 71.9 m
considering a dynamic load coefficient: 1.1
FINDING CG OF THE IN SERVICE CONDITION
Counter clockwise moments
Weight of the
S. No. Item description component (kg)
1 Counter jib 3250
2 Ballast 22800
26050

Clockwise moments

S. No. Item description Weight of the


component (kg)
1 Jib foot section 3584
2 Jib section 2 3215
3 Jib section 3 1305
4 Jib section 4 1305
5 Jib section 5 1305
6 Jib section 6 2182
7 Jib section 7 2543
8 Jib section 8 585
9 Jib section 9 447
10 Jib section 10 422
11 Jib Nose 154
12 Jib trolley 910
13 Tower head, ladder and monorail 18505
14 Lifted load 13200
49662
Total weight: 75712

Load Eccentricity: -6.20

FINDING CG OF THE OUT OF SERVICE CONDITION


Counter clockwise moments
Weight of the
S. No. Item description component (kg)
1 Counter jib 3250
2 Ballast 22800
26050

Clockwise moments
Weight of the
S. No. Item description component (kg)
1 Jib foot section 3584
2 Jib section 2 3215
3 Jib section 3 1305
4 Jib section 4 1305
5 Jib section 5 1305
6 Jib section 6 2182
7 Jib section 7 2543
8 Jib section 8 585
9 Jib section 9 447
10 Jib section 10 422
11 Jib Nose 154
12 Jib trolley 910
13 Tower head, ladder and monorail 18505
14 Lifted load 0
36462
Total weight: 62512

Load Eccentricity: 7.67


HE IN SERVICE CONDITION

Lever from the true geometric Moment


vertical axis of the mast (m) (kg-m)
21.2 68900
21.2 483360
Total counter clockwise moments: 552260

Lever form the true geometric Moment


vertical axis of the mast (m) (kg-m)
1.49 5340
1.30 4180
1.30 1697
1.30 1697
1.30 1697
1.30 2837
1.30 3306
5.33 3118
5.47 2445
4.22 1781
14.15 2179
46.90 42679
0 0
71.90 949080
Total counter clockwise moments: 1022034
kg

OUT OF SERVICE CONDITION

Lever form the true geometric Moment


vertical axis of the mast (m) (kg-m)
21.2 68900
21.2 483360
Total counter clockwise moments: 552260

Lever form the true geometric Moment


vertical axis of the mast (m) (kg-m)
1.49 5340
1.30 4180
1.30 1697
1.30 1697
1.30 1697
1.30 2837
1.30 3306
5.33 3118
5.47 2445
4.22 1781
14.15 2179
46.90 42679
0 0
71.90 0
Total counter clockwise moments: 72954
kg

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