SELECTION AND PRICING OF TOWER CRANE

Size: px

Start display at page:

Download "SELECTION AND PRICING OF TOWER CRANE"

Alexandra Goodwin
5 years ago
Views:

1 SELECTION AND PRICING OF TOWER CRANE PREPARED BY: William Tang

2 TABLE OF CONTENT 1) Crane Population and Model 2) Crane Capacity Trend 3) Type of Cranes 4) Common Use in the Market Foundation - External & Internal Climbing - Installation & Dismantling 5) Selection of Crane (Application & Factors on Pricing) 6) Consideration on Chargeable Items 7) Construction Cost HK Practice 8) Safety Issue 9) New Technology and Features 10) Tower Crane Used in Hong Kong

3 CRANE POPULATION AND MODEL Total: 482 Unit Year 2014

4 CRANE CAPACITY TREND 100 % ' 80' 90' 2000' 2014' 2015' <100mt 100mt<200mt 200mt<300mt 300mt< 500mt 500mt<1000mt 1000mt<1500mt

5 TYPE OF CRANES - GENERAL Each class of cranes has its own basic characteristics must suit to particular application and the job. Job requirements consistency -Weights and dimension of loads -Movement of loads: materials lifting methods and working areas -Work Load: Number and frequency of lifts -Operational Time: hour per week -Space available for crane access, erection, operation and dismantling -Special operational requirement or limitation imposed

6 TYPE OF CRANES 1. Fast Erection Crane Capacity 20mt ~ 120mt Advantages -Easy setting up (approx. 30 mins by one operator) and transportation. -No foundation necessary. -Good for short construction time. -Cost Saving.

7 TYPE OF CRANES 2. Horizontal Jib Tower Crane Capacity: Up to 4000mt Advantages -Most efficient crane. -Long life time. -Wide capacity range. -Economical for transportation. -Fast and easy to set up. -Suitable for medium and large construction project.

8 TYPE OF CRANES 3. Luffing Jib Crane Capacity 100mt ~ 700mt Advantages -Design for high buildings project. -Good for working in extremely restricted spaces.

9 TYPE OF CRANES 4. Gooseneck Tower Crane Capacity 100mt ~ 200mt Advantages -Combination Horizontal jib & Luffing jib.

10 TYPE OF CRANES 5. Mobile Tower Crane Capacity 60mt ~ 150mt Advantages -Combines truck crane and tower crane. -Design for push button assembly by one person (20mins) full set up. -Taxi crane for numerous operation a day. -Optimal maneuverability.

11 TYPE OF CRANES 5. Mobile Tower Crane Model Jib Max Lifting capacity Tip load Hook height MK63 36m 8,000kg 1,800kg 25m MK88 45m 8,000kg 1,850kg 30.2m MK100 52m 8,000kg 1,800kg 33m MK140 57m 8,000kg 1,800kg 37.7m

12 TYPE OF CRANES - MOBILE TOWER CRANE

15 TYPE OF CRANES - MOBILE TOWER CRANE

17 COMMON USE IN THE MARKET FOUNDATION 1.) Original Foundation Anchor ( 原裝秤腳 ) The foundation securing method determines by the condition of the construction site

18 COMMON USE IN THE MARKET FOUNDATION 2.) Local Fabricated Reusable H-Beam With Cast-In Bolts

19 COMMON USE IN THE MARKET FOUNDATION 3.) Reusable Foundation Anchor With Cast-In Bolts

20 COMMON USE IN THE MARKET - FOUNDATION 4.) Central Ballast Undercarriage. ( 壓磚底座 ) - Stationary Type ( 直立式 ) - Rail Travelling ( 行走路軌式 )

21 COMMON USE IN THE MARKET - FOUNDATION 5.) Portal Leg. -For construction where no undercarriage or cruciform base can be set up due to constricted room -Safety places the crane above of streets, pedestrian walks etc. > Safe construction works without affection of traffic or other actions

COMMON USE IN THE MARKET ADJUSTMENT IN HEIGHT 1.

4m; slab opening) -Cost saving on hiring extra tower mast section

22 COMMON USE IN THE MARKET ADJUSTMENT IN HEIGHT 1.) Internal Floor Climbing Crane. ( 內爬式 ) Advantages: -Supporting by ground beam or structural wall -Limit space required only (2.4m x 2.4m; slab opening) -Cost saving on hiring extra tower mast section Disadvantages: -Backfill the slab opening after climbing -Material cost for fabricate supporting H-beam -More time consume on preparing work; e.g. relocation of collar frame

extra tower mast section - Extra cost on

23 COMMON USE IN THE MARKET ADJUSTMENT IN HEIGHT 2.) External Climbing ( 外爬式 ) Advantages: - Less extra work after climbing - Less preparation time Disadvantages: - Pay for extra tower mast section - Extra cost on transportation - Take longer time on dismantling, more expensive

24 COMMON USE IN THE MARKET INSTALLATION Installation of Tower Crane by using 1)Mobile Crane 2)Derrick Crane 3)Other Tower Crane

25 COMMON USE IN THE MARKET DISMANTLING Dismantling of Tower Crane by using 1) Mobile Crane 2) Derrick Crane 3) Other Tower Crane

26 SELECTION OF CRANE - APPLICATION The construction site determines the tower crane capacity and crane type -SIZE: What type of material to be conveyed. -WEIGHT: What is the heaviest weight of material. -TIME: Logistic of material flow at site. -WORKING AREA: Location of tower crane. -SPEED: Hoisting speeds are direct indication of cycle time -NOISE: Low level of operational noise (dba) for construction site to apply for Construction Noise Permits (CNP)

27 SELECTION OF CRANE - APPLICATION Hoisting Speed Comparison (Example) BRAND LIEBHERR COMEDIL POTAIN MODEL 180HC-L CTL 180 MCR 225A NO. OF FALL 1-fall 2-falls 2-falls HOIST UNIT 110KW 67KW 110KW HOISTING SPEED 400kg 338m/min 0kg 135m/min 875kg 200m/min 2000kg 190m/min 2000kg 135m/min 2000kg 150m/min 4000kg 113m/min 4000kg 76m/min 4000kg 110m/min 8000kg 65m/min 8000kg 41m/min 8000kg 55m/min

28 SELECTION OF CRANE FACTORS ON PRICING Factors Lower Cost Higher Cost Tower Crane Capacity <300mt >300mt Tower Crane Type Hammer Head Luffing Jib Age of Tower Crane Older New Duration >12 months <12 months Site Condition Erection Works Pre-install anchors during piling stage Small capacity mobile crane with less erection day Pile cap has completed Large capacity mobile crane with long erection days Buyback >24 months <24 months Peak Season Low season of construction High season of construction

29 CONSIDERATION - CHARGEABLE ITEMS Mandatory Basic Contract Cost - Rental / Purchase Fee - Foundation Anchor / Cast in Bolts - Labour Cost of Installing Anchor / Cast in Bolt - Erection of Tower Crane (i.e. Labours, Lifting Applicances) - Monthly Maintenance Cost (for Purchase Option) - Transportation of Crane Parts (On & Off Site) Documentation & Testing Cost - Method Statement - Calculation Report by ICE / RSE - Critical Parts Inspection (CPI) - Weld Test (NDT) - Surveyor load test (RPE) - Test weight - T5 Engineer Construction Cost - Costs of Climbing / Elevation - Material Cost for Supporting (i.e. I-Beams) - Costs of Dismantling - Supervising Engineer - Anti-Collision Device - Lighting Protection - Anemometer - Spot Light / Warning Light - Special Painting

30 CONSTRUCTION COST HONG KONG PRACTICE

31 SAFETY ISSUE According to Code of Practice for Safe Use of Tower Cranes, Second Edition, October Design and Calculation must comply with Hong Kong Wind Code 2004

32 SAFETY ISSUE LIEBHERR Tower cranes comply with below documents and Standards -EN DIN DIN Cranes Safety Tower cranes Cranes Steel structures Verification and analyses Cranes Stability for all cranes except non-rail mounted mobile cranes and except floating cranes -DIN :1986 Design loads on structures Part 4: Wind loads -FEM 1.001:1998 -FEM EN EN EN EN Rules for the design of hoisting appliances (all volumes) Recommendation for the calculation of tower crane structures in out of service conditions Crane safety General design Part 1: General principles and requirements Crane safety General design Part 3-1: Limit states and proof competence of steel structure Eurocode 2: Design of concrete structures Part 1-1: General rules and rules for buildings Eurocode 7: Geotechnical design Part 1: General rules

NEW TECHNOLOGY AND FEATURES 1) ABB System Forbidden Zone Device (Workable / Non-Workable Zone) 2) LM1 & LM2 Additional Lifting Capacity within Crane Limitation 3) LICCON PLANNER CAD Drawings of

33 NEW TECHNOLOGY AND FEATURES 1) ABB System Forbidden Zone Device (Workable / Non-Workable Zone) 2) LM1 & LM2 Additional Lifting Capacity within Crane Limitation 3) LICCON PLANNER CAD Drawings of Different Cranes for More Precise Planning 4) LiDAT Machine Data Transmission System for transferring data to Services Centre. Achieve more Efficient and Simple Plant Machinery Management 5) Frequency Drive Control Manual Positioning Mode for More Precise Control on Assembling and Lifting Works. Automatic Load Detection and Providing Maximum Hoisting Speed 6) LiUp Elevator is installed internally on larger tower sections