Hook Time Analysis

Hi Derrick

This is my own formula which is used in conjunction with Asta PowerProject.

Once you have researched the variables for the specified crane then the result is used as a resource added to tasks requiring crane use.

The Histogram will need to be levelled when the total hooks per day is known.

Best regards

Mike Testro

Best regards

Mike T.

Dear Sir, i am a beginner and i want to know how u came about this analysis and it importance?

Dear all

I am just a beginner  , can any one advise me what " Hook Time " Means  " Hooks per Day " 

Thank you 

Hi Andrew

This topic is part of module 9 in the Advanced Planning set in Planning Acaemy tuition modules.

The following sections are the basic formulas for a 4 story concrete frame with brick cladding.

DO NOT USE these examples for your project - do your own research into the variables.

The calculations need a programme resource on your barchart called hooks which is applied to all tasks that need crane use - don't forget the formwork tables which all need hook time.

Part 1 Crane Capacity:

Luffing Crane
 
 

Typical Capacity for a Small Crane
 

Max Load
5
tonne

Min Load
1.5
tonne

Operation
Time
 

Sling Up
5
mins

Hoist
4
mins up

Discharge
3
mins

Hoist
2
mins down

Cycle
14
mins

Hoist per Hr
4
 

Work hrs per day
6
 

Hooks per day
24
 

Part 2 Crane Usage

Code
Tower Crane Usage
Days
Hooks

xx
Tower Crane Erect
xx
 

3
Column Rebar
3
1

1
Column Pour
1
28

4
Slab Rebar
3
4

2
Pour Slab
1
0

3
Column Rebar
3
1

5
Strike Forms
2
4

1
Column Pour
1
28

5
Slab Forms
3
4

4
Slab Rebar
3
4

2
Pour Slab
1
0

3
Column Rebar
3
1

5
Strike Forms
2
4

7
Internal Blockwork L0
5
1

6
External Brick Work Lift 01
8
1

1
Column Pour
1
28

5
Slab Forms
3
4

6
External Brick Work Lift 02
8
1

4
Slab Rebar
3
4

2
Pour Slab
1
0

3
Column Rebar
3
1

5
Strike Forms
2
4

7
Internal Blockwork L1
8
1

6
External Brick Work Lift 03
8
1

9
Load Out L1
2
4

1
Column Pour
1
28

5
Slab Forms
3
4

7
External Brick Work Lift 04
8
1

4
Slab Rebar
3
4

2
Pour Slab
1
0

3
Column Rebar
3
1

9
Load Out L2
2
4

7
Internal Blockwork L2
8
1

1
Column Pour
1
28

6
External Brick Work Lift 05
8
1

5
Slab Forms
3
4

4
Slab Rebar
3
4

6
External Brick Work Lift 06
8
1

2
Pour Slab
1
0

5
Strike Forms
2
4

7
Internal Blockwork L3
8
1

9
Load Out L3
2
4

6
External Brick Work Lift 07
8
1

8
Install Roof Plant
5
1

6
External Brick Work Lift 08
8
1

7
Internal Blockwork L4
8
1

7
External Brick Work Lift 09
8
1

9
Load Out L4
2
4

6
External Brick Work Lift 10
8
1

6
External Brick Work Parapet
4
1

Part 3 Hook Numbers

Code
Material Type
Volume
 
Container
Capacity
Hooks
Programme Tasks
Hooks per Use
Work Days
Hooks Per day
 

1
Concrete in Columns
110
m3
Skip
0.8
138
5
28
1
28
 

2
Concrete in Slabs
522
m3
Skip
0.8
653
5
131
1
131
<<<< Pump

3
Rebar in Columns
14
tonne
Sling
1.2
12
5
3
3
1
 

4
Rebar in Slabs
69
tonne
Sling
1.2
58
5
12
3
4
 

5
Table Forms
75
unit
unit
1
75
8
10
3
4
 

6
External Brick m2
42750
nr
pallettes
624
69
9
8
8
1
 

7
Internal Block
2640
nr
palletes
80
33
7
5
8
1
 

8
Roof Plant
5
units
unit
1
5
1
5
5
1
 

9
Internal Heavy
30
units
unit
1
30
4
8
2
4
 

This requires 1 luffing jib crane use a factor for more than one crane to adjust the hooks per hour ratio per day.

Best regards

Mike Testro