QUANTITY SURVEYING DIVISION ASSESSMENT … of Measurement ... 2 pages abstracted from the Contract...

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QUANTITY SURVEYING DIVISION

ASSESSMENT OF PROFESSIONAL COMPETENCE

PART I WRITTEN ASSESSMENT – AUGUST 2015

TIME ALLOWED: 3 hours 30 minutes

THE HONG KONG INSTITUTE OF SURVEYORS QUANTITY SURVEYING DIVISION ASSESSMENT OF PROFESSIONAL COMPETENCE PART I WRITTEN ASSESSMENT – 19th AUGUST 2015

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NOTES TO CANDIDATES A. Headings to questions are for ease of identification only and do not form part of

the questions. B. Sections of questions are as follows: (1) Section A – TEN (10) multiple choice questions of 2 marks for each

question. The recommended time for attempting the multiple choice questions is approximately 20 minutes.

(2) Section B – FIVE (5) short questions total 30 marks of 6 marks for each

question. The recommended time for attempting the short questions is approximately 40 minutes.

(3) Section C – TWO (2) questions on Measurement of 50 marks. The

recommended time for attempting this part is approximately 150 minutes. C. All Multiple Choice Questions, Short Questions and the tasks on

Measurement are compulsory. D. The total mark is 100. The overall passing mark is 55. E. Refer also to INSTRUCTIONS TO CANDIDATES which were issued to you in

advance. NOTE: (a) Whenever the term HKSMM is used, it shall mean the Hong Kong Standard

Method of Measurement of Building Works, Fourth Edition 2005. (b) Whenever the term SFC is used, it shall mean the Agreement & Schedule of

Conditions of Building Contract for use in the Hong Kong Special Administrative Region, Private Edition - With Quantities 2005 Edition or Without Quantities 2006 Edition, as appropriate.

ASSESSMENT CRITERIA Candidate is expected to demonstrate his/her acquisition of practical skills and theoretical knowledge in quantity surveying at the technical level and the ability to correctly and precisely express his/her understanding on some specific areas of quantity surveying practice at the technical level.

THE HONG KONG INSTITUTE OF SURVEYORS QUANTITY SURVEYING DIVISION ASSESSMENT OF PROFESSIONAL COMPETENCE PART I WRITTEN ASSESSMENT – 19 AUGUST 2015

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SECTION A – MULTIPLE CHOICE QUESTIONS [TOTAL 20 MARKS]

Candidate is required to choose his / her answers to the questions by writing “A”,

“B”, “C” or “D” in the answer sheet for the Multiple Choice questions.

[2 Marks each]

A1 Which of the following statement regarding variation in SFC (with quantities)

contract is correct?

(1) Error in quantity shall be deemed to be variation required by the

Architect.

(2) Variation must be related to measured works in Bills of Quantities

(3) Variation must be instructed before Substantial Completion.

A (1) only

B (2) only

C (3) only

D None of the above

A2 Which of the following is a tool that Architects and Engineers could use for

preventing conflicts between the structure and mechanical, electrical and

plumbing systems so as to enhance the overall spatial design integration?

A Building Interactive Modelling

B Building Integration Modelling

C Building Information Modelling

D Building Intelligent Modelling

A3 Which of the following is / are to be considered by the Employer when

selecting a procurement method for the construction of a building project?

i) Time

ii) Risks allocation

iii) Site Safety

A (i) only

B (ii) only

C (i) and (ii)

D All of the above


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A4 Which of the following will be considered as “front-loading” in the pricing of

the Bills of Quantities for a new building development?

Pricing substantially higher rates than normal rates in:

i) excavation items

ii) doors and windows items

iii) landscaping items

A (i) only

B (ii) only

C (i) and (iii)

D (ii) and (iii)

A5 In the assessment of variation, the measurement for “emulsion painting to

the walls” shall be rounded to:

A Nearest whole unit

B Nearest one decimal place

C Nearest two decimal places

D None of the above

A6 Which of the following failures to comply with the express provision of the

SFC will also constitute a breach of statutory duty on the part of the

Contractor?

A Failure to submit a surety bond in accordance with Clause 33.1

B Failure to effect and maintain employees’ compensation insurance in

accordance with Clause 21.1

C Failure to effect and maintain Contractors’ All Risks Insurance of the

Works in accordance with Clause 22.2

D All of the above

A7 All the following items shall be measured in “m” except

A 150mm2 4/C Fire resistant XLPE/SWA/PVCS cable

B 150mm diameter Chilled water steel pipe

C 300mm x 150mm x 0.6mm Hot-dipped galvanized steel sheet ductwork

D 150mm x 100mm; 2 compartments; Steel cable surface trunking


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A8 Which of the following measurement rule(s) is / are correct regarding sheet

piling when the size of cross section of piles and thickness are being stated?

i) Supplying, handling, transporting and pitching steel sheet piling shall

be measured in kg.

ii) Driving of sheet piling shall be measured in m2.

iii) Cutting of sheet piling shall be measured in m.

iv) Corner piles shall be measured as Item.

A (i) and (ii)

B (ii) and (iii)

C (iii) and (iv)

D All of the above

A9 Which of the following are the common headings normally included in the

preparation of a Final Account for a new building project?

i) Architect’s instructions

ii) Provisional quantities adjustment

iii) Prime cost sums adjustment

iv) Certified gross value for payment

A (i) and (ii)

B (i) , (ii) and (iii)

C (i) , (ii) and (iv)

D All of the above

A10 All the following items shall be observed and included in the valuation of

payments for materials on site except

A A reasonable allowance for materials wastage

B Materials included in previous valuations are still on site if they have

not yet been incorporated into the permanent works

C A comparison of the quantities of the delivered materials with those

stated in the Bills of Quantities

D Materials on site not for incorporation into the permanent works


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SECTION B –SHORT QUESTIONS [TOTAL 30 MARKS]

Candidate is required to state his / her answer to the question in the answer book

separately provided.

Question B1

The following information is shown in a lump sum fixed price contract based on Bills

of Quantities. SFC (with quantities) is adopted in this project.

(i) 236 door closers are shown in the Contract Drawing for a residential project.

(ii) 326 door closers are stated in the Contract Bills of Quantities.

(iii) The unit rate of $500.00/No. for each door closer.

Neither revised drawing(s) nor Architect’s instruction related to these door closers

has been issued.

(a) How many door closers should be installed finally? State the reason.

(b) Any variation for the door closers is to be valued? State the reason.

(c) Calculate the amount of variation, if any.

[6 Marks]

Question B2 Based on the following information for the Contract of a residential property development:

Contract Period stated in tender document

360 days

Defects Liability Period 12 months from the next day of Substantial Completion Date of the Works

Liquidated and Ascertained Damages

HK$ 50,000/day

Date of Letter of Award 7 January 2011

Commencement Date 14 January 2011

Date for Possession of the Site 25 January 2011

(i) Calculate the Contract Completion Date of the Works. [2 Marks]

(ii) The Substantial Completion Date of the Works is 1 March 2012; advise the end

date for the expiry of the Defects Liability Period. [1 Mark]

(iii) The extended Completion Date of the Works is 14 February 2012,

(a) Calculate the number of days of extension of time so granted [1 Mark]

(b) The liable amount of liquidated and ascertained damages to be paid by the

Contractor. [2 Marks]


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SECTION B – SHORT QUESTIONS

Question B3

As the assistant quantity surveyor, you are required to prepare the valuation for

interim payment for a Contract using SFC with quantities.

State four items which will be included in the valuation of interim payment.

[6 Marks] Question B4

Your senior quantity surveyor asks you to calculate the Final Contract Sum (with

details to show the items of addition and omission) for a demolition contract with the

following information:-

(a) The variation works agreed with the Contractor for tree felling and protection:

HK$68,000.00

(b) The variation works agreed (excluding the tree felling and protection) with the

Contractor: HK$73,000.00

(c) The final Nominated Sub-contract Sum for removal of asbestos:

HK$225,000.00

(d) 2 pages abstracted from the Contract Documents of the demolition contract

(Annex X1-2)

[6 Marks]


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Attachment for Question B4


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PROJECT XYZ SCHEDULE NO. 3

PRIME COST AND PROVISIONAL SUMS

Item Description $ ¢

SCHEDULE NO. 3

PRIME COST AND PROVISIONAL SUMS

Prime Cost Sum A Provide the Prime Cost Sum of HK$300,000.00 for removal of asbestos. 300,000 00 B ADD 3 % for profit 9,000 00 C Allow for general attendance as described. 5,000 00

Provisional Sums to be expended in part or in whole as directed by the Architect or wholly deducted from the Contract Sum if not required

D Provide a Provisional Sum of HK$100,000.00 for tree felling and protection. 100,000 00 E Provide a Provisional Sum of HK$150,000.00 for contingencies. 150,000 00

CARRIED TO SUMMARY OF TENDER $ 564,000 00

Annex X1 to Question B4


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PROJECT XYZ SUMMARY OF TENDER

Description $ ¢

DEMOLITION WORKS FOR PROJECT XYZ SUMMARY OF TENDER Page No. Schedule No. 1 - Preliminaries 1/15 1,000,000 00 Schedule No. 2 - Demolition Works 2/10 7,500,000 00 Schedule No. 3 - Prime Cost and Provisional Sums 3/1 564,000 00

TOTAL CARRIED TO FORM OF TENDER $ 9,064,000 00

Annex X2 to Question B4


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Question B5

You are the assistant quantity surveyor of a local Consulting QS firm for the

Residential Development at 23 Tung Wing Street, Lot 9999 in Tai Po, Hong Kong.

The particulars of the Foundation Contract are as follows:

Contract Particulars (Piling Foundation, ELS and Pile Cap Works)

i. Commencement Date: 12th June 2015

ii. Contract Period: 490 calendar days

iii. Defects Liability Period: 12 months from Substantial Completion of the Works

iv. Contract Sum: HK$ 279,141,289.00

v. Limit of indemnity to third party liability insurance against injury or death to

any person: HK$50,000,000.00

vi. Limit of indemnity to third party liability insurance against injury or damage to

real or personal property: HK$50,000,000.00

vii. Percentage to cover professional fees: 4%

viii. Sum insured for the removal of debris: HK$500,000.00

As requested by your senior quantity surveyor, list out FOUR irregularities with your

comments which are required to clarify with the Foundation Contractor based on the

following extracted Policy Schedule for Contractors’ All Risks submitted by the

Foundation Contractor (Good Luck Foundation Company Limited):

[6 Marks]


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Policy Schedule

Class of Insurance Contractors’ All Risks

Policy No. A607131212004

The Company / The Insurer ABC Insurance Co., Ltd.

The Insured Good Luck Foundation Limited as the Main Contractor

&/or all their Sub-contractors of every tier all for their respective rights and interests &/or the Employer - Good Fortune Limited as Principal.

Period of Insurance

Insurance of the Works 12-June-2015 to 13-October-2016

Third Party Liability Insurance 12-June-2015 to 13-October-2016

Premium HK$ 951,025.00

The Contract Piling Foundation, ELS and Pile Cap Works for the Proposed

Residential Development at 23 Tung Wong Street, Lot 9999 in Tai Po, Hong Kong

Contract Sum HK$ 279,141,289.00

Section I: Material Damage

Item 1 Material Damage

Sum Insured: HK$ 279,114,298.00

Item 2 Professional fees Sum Insured: HK$ 500,000.00

Item 3 Removal of debris Sum Insured: HK$ 500,000.00

Section II: Liability to third parties

Limit of indemnity

Any one accident HK$50,000,000.00

Any one period of insurance HK$200,000,000.00 in aggregate

Minimum and non-refundable premium: HK$951,025.00


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SECTION C – QUESTION ON MEASUREMENT [TOTAL 50 MARKS]

Question C

Your team is preparing the tender documents for the Site Formation and Foundation

Works of an office building, Electronic Tower 3, which is an extension to the

Electronic Towers 1 and 2 completed two years ago of which your company was

also the Consultant Quantity Surveyor.

You are a member of the measurement team for this project and responsible to

prepare Bill No. 4 – Bored Piles based on the following drawings:

� Drawing No. P-01 – Piling Layout and Piling Schedule (with the additional piles

identified)

� Drawing No. P-02 - Typical Details of End Bearing Bored Pile with Bellout

� Drawing No. P-03 - General Notes and Method Statement (your senior has

already highlighted the key points for your reference)

In the course of taking off, your team leader reminds you to note the following:

a. the contract is a re-measurement contract.

b. key points to be noted in the General Notes.

c. Bill No. 3.1 – Bored Piles of the Foundation Works for the Electronic Towers 1

and 2 (Appendix A) could be used as a reference.

d. a lap should be added for reinforcement longer than 12m.

e. 1 no. of coring test for bored pile of each different diameter shall be allowed in

the bills of quantities.

f. Bar reinforcement will be calculated at the following weights per liner meter:

Diameters Kg/m

10mm 0.616

12mm 0.888

16mm 1.579

20mm 2.466

32mm 6.313

40mm 9.864

You should provide the following for checking of your team leader:

i. details of taking off [34 marks]

ii. Bill No. 4 – Bored Piles [16 marks)


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Attachment for Question C


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GENERAL NOTES

1. ALL DIMENSIONS ARE IN MILLIMETRES AND LEVELS ARE IN METRES ABOVE HONG

KONG PRINCIPAL DATUM UNLESS STATED OTHERWISE.

2. ALL WORKS SHALL BE DESIGNED AND CARRIED OUT IN ACCORDANCE WITH

BUILDING (CONSTRUCTION) REGULATION 1990, CODE OF PRACTICE FOR

FOUNDATIONS, CODE OF PRACTICE FOR STRUCTURAL USE OF CONCRETE 2013,

CODE OF PRACTICE FOR DEAD AND IMPOSED LOAD 2011.

3. VERTICALLY TOLERANCE TO BE 1 IN 100, MAXIMUM OFFSET AT GROUND LEVEL TO

BE +50mm.

4. FOR CONSTRUCTION OF BORED PILE, EXCAVATION CAN BE CARRIED OUT BY GRAB

OR REVERSE CIRCULATION DRILLING (RCD). FOR EXCAVATION IN MARBLE, ONLY

RCD WILL BE ALLOWED. DURING EXCAVATION OF BORED PILE, TOLERANCE FOR

VERTICALITY SHALL BE FREQUENTLY CHECKED BY CHECKING THE VERTICALITY OF

TEMPORARY STEEL CASING OR THE DRILL ROD OF RCD, OR BY VISUAL INSPECTION

OF THE CRANE CABLE DURING GRABING IN SOILS.

5. BORED PILES SHALL NOT BE CONSTRUCTED WITHIN 5m OF A PILE FOR WHICH

EXCAVATION WORKS ARE IN PROGRESS OR FOR WHICH THE CONCRETE HAS BEEN

CAST FOR LESS THAN 24 HOURS.

6. ALL STRUCTURAL CONCRETE IS TO BE GRADE 45D/20 (CHARACTERISTIC STRENGTH

AT 28 DAYS TO BE 45MPa; SLUMP 175mm + 25mm) COMPLYING WITH CS1:2010.

PFA CONTENT TO BE 35% BY MASS OF THE CEMENTITIOUS CONTENT OF THE

CONCRETE.

7. COVER TO OUTERMOST STEEL BARS SHALL BE 75mm.

8. UNLESS OTHERWISE INDICATED, THE LAP LENGTH OF REINFORCEMENT SHALL NOT

BE LESS THAN 50D (WHERE D IS THE DIAMETER OF REINFORCEMENT). LAP FOR

MAIN REINFORCEMENT SHALL BE STAGGERED AS FAR AS POSSIBLE.

9. RADUIS AND BENDS IN REINFORCEMENT TO BE IN ACCORDANCE WITH THE CODE

OF PRACTICE FOR STRUCTURAL USE OF CONCRETE 2013 AND BS8666: 2005.

10. REACTIVE ALKALI OF CONCRETE AS EXPRESSED AS THE EQUIVALENT SODIUM OXIDE

PER CUBIC METER OF CONCRETE SHALL NOT EXCEED 3.0kg WHEN DETERMINED IN

ACCORDANCE WITH THE SPECIFICATION ITEMS GIVEN IN APPENDIX A OF PNAP

APP-74.

11. ALL REINFORCEMENT SHALL BE HIGH YIELD STEEL (T) OF GRADE 460 (THE

CHARACTERISTIC STRENGTH: 460N/mm2) COMPLYING WITH CS2-2012.

12. END-BEARING BORED PILES TO BE FOUNDED ON CATEGORY 1(c) OR BETTER

BEDROCK WITH PRESUMED BEARING CAPACTIY OF 5000 kPa. THE FOUNDING

ROCK MATERIAL SHOULD HAVE A TOTAL CORE RECOVERY OF MORE THAN 85%

AND MINIMUM UNIAXIAL COMPRESSIVE STRENGTH OF ROCK MATERIAL (UCS) NOT

LESS THAN 25 MPa (EQUIVALENT POINT LOAD INDEX STRENGTH PLI 50 NOT LESS

THAN 1 MPa).

13. PRIOR TO THE COMMENCEMENT OF BORED PILE WORK, PREDRILL HOLE SHALL BE

CARRIED OUT AT EACH BORED PILE LOCATION. THE PREDRILLING SHOULD BE

SUNK TO AT LEAST 5m BELOW THE ROCKHEAD OF THE SPECIFIED GRADE, OR

DESIGN ROCK SOCKET LENGTH, WHICHEVER IS GREATER.

METHOD STATEMENT FOR BASE BELLOUT OF BORED PILE

1. BELLOUT IS FORMED BY USING AN EXPANDABLE DRILL BIT MOUNTED ONTO A

REVERSE CIRCULATION DRILL RIG AND THE USE OF EXPANDABLE DRILL BIT IS

ADVISABLE.

2. THE SIZE OF THE BELLOUT TOOLS SHALL BE CHECKED AND CALIBRATED ON

GROUND INITIALLY BY MEASURING THE VERTICAL DISPLACEMENT AGAINST THE

DIAMETER OF BELLOUT FORMED.

3. FOR EACH BELLOUT FORMED, THE SIZE OF BELLOUT WOULD BE CONFIRMED BY

MEASURING THE VERTICAL DISPLACEMENT OF DRILL STRING ATTACHED TO THE

REVERSE CIRCULATION DRILL RIG.

DRAWING NO: P-03

GENERAL NOTES AND METHOD STATEMENT


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BILL NO. 3.1BORED PILES

Ref. Quantity Unit Rate $ ¢

BILL NO. 3.1BORED PILES (ALL PROVISIONAL)

Notes

1. Pre-drilling shall be given run and the number ofdrill holes be stated in the description.

2. Pre-drilling in rock and in materials other than rockshall be given separately.

3. Pre-drilling in materials other than rock shall bemeasured:

a. total drill length not exceeding 10.00mb. total drill length in further stages of 5.00m

4. Pre-drilling in rock shall be measured:a. commencing level of drilling being stated in stage

of 5.00m; andb. the length of coring being stated.

PRE-DRILLING

A Provide, assembling on site and subsequently Itemdismantling and removing plant and equipmentfor pre-drilling works

Drill H-size vertical hole through materials of anykind except rock

B Drill vertical hole 15.00 - 20.00m deep 122 Runbelow existing ground level (In 7 No.)

C Ditto 20.00 - 25.00m (In 25 No.) 590 Run

Vertically drill to required depths and obtain H-sizebedrock core 5.00m deep and commencing at

D A level of 15.00 - 20.00m below existing ground 35 Runlevel (In 7 No.)

E A level of 20.00 - 25.00m below existing ground 125 Runlevel (In 25 No.)

STTL No. 333 Carried to Collection $

Site Formation and Foundation Contract3.1/1

Description

Annex A to Question C


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PRE-DRILLING (Cont'd)

A Backfill drill holes as specified 872 Run

B Allow for preparing and submitting reports and Itemrecords of bore holes and core logs

C Allow for laboratory charges in connection with Itemcore testing

BORED PILES

D Provide, assembling on site and subsequently Itemdismantling and removing plant and equipmentfor piling works

Shaft boring for piles commencing at existingground level including supplying, handling,transporting, pitching, driving and withdrawingtemporary pile lining and removing temporarypile lining and excavated materials from site

E Shaft for 2000mm diameter pile 15.00 - 20.00m 139 Rundeep (In 7 No.)

F Extra for toeing into bedrock 2.00 - 2.50m (In 7 No.) 18 Run

G Extra for enlarged base to 3000mm diameter 7 No.

H Shaft for 2500mm diameter pile 25.00 - 30.00m 660 Rundeep (In 25 No.)

J Extra for toeing into bedrock 2.50 - 3.00m 70 Run(In 25 No.)

K Extra for enlarged base to 3750mm diameter 25 No.



Description



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BORED PILES (Cont'd)

A Allow for excavating for and removing underground Itemobstructions including backfilling and removingsurplus materials from site

Reinforced Concrete Grade 45D/20 in bored piles

B 2000mm Diameter pile (In 7 No.) 125 Run

D Extra for enlarged base to 3000mm diameter 7 No.

C 2500mm Diameter pile (In 25 No.) 608 Run

E Extra for enlarged base to 3750mm diameter 25 No.

Deformed high yield steel bar reinforcement

F 16mm Diameter 33,313 Kg

G 40mm Diameter 258,469 Kg

Backfilling approved materials to empty bore toexisting ground level for

H 2000mm Diameter pile 15 Run

J 2500mm Diameter pile 53 Run

K Allow for protecting reinforcement protuding Itemabove bored pile



Description



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BILL NO. 3.1

BORED PILES


CORING TEST

A Provide, assembling on site and subsequently Itemdismantling and removing plant and equipmentfor core drilling

Concrete coring test commencing at a depth15.00 - 30.00m including subsquently pressuregrouting with cement and sand as described

B 150mm Diameter core to 2000mm diameter pile 18 Run(In 1 No.)

C Ditto to 2500mm diameter pile (In 1 No.) 24 Run

D Allow for laboratory tests, preparation and submission Itemof reports as required

(END OF ALL PROVISIONAL)



Description



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- END OF PAPER -



Ref. $ ¢

Page

3.1/1

3.1/2

3.1/3

3.1/4

STTL No. 333 Total - Bill No. 3.1

Site Formation and Foundation Contract Carried to General Summary $

3.1/5

Description

BILL NO. 3.1BORED PILESCOLLECTION

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QUANTITY SURVEYING DIVISION ASSESSMENT … of Measurement ... 2 pages abstracted from the Contract...

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Transcript of QUANTITY SURVEYING DIVISION ASSESSMENT … of Measurement ... 2 pages abstracted from the Contract...