Project Contractor Management: Estimation, Planning, and Tendering

This project assesses a student's understanding of construction project management, focusing on the Greenwich Road plan. It involves estimating resources for brickwork, carpentry, and scaffolding, detailing labor requirements, and developing a project schedule. The project covers tendering processes, including invitation to tender, contract conditions, and selection criteria. It further examines the management of sub-contractors, including interview questions, SWOT analysis, contract clauses, and appeal processes for unsatisfactory work. The student also addresses health and safety considerations, breach scenarios, and strategies for ensuring adherence to the project schedule. The project emphasizes the importance of planning, resource allocation, and effective communication in construction project management, as well as the need to adhere to regulations and standards.

1. Estimation of resource:
Estimation of brick work: To estimate the quantity of brick work total length of brick
wall is calculated from the architectural drawings. Height of each floor is 3 meters and
there two types of wall in the building one 270 mm thick while the other one 110mm
thick. Once we know these data volume of brickwork may be calculated.
Length of
brickwork
Height Width of wall Volume of
brickwork
Lower floor
58.6m of
270mm wall
44m of 110mm
wall
3m
270mm
&
110mm
58.6 x 3 x 0.27
+
44 x 3 x 0.11
¿ 63 m3
Ground floor
48m of 270mm
wall
67m of 110mm
wall
3m
270mm
&
110mm
48 x 3 x .27
+
67 x 3 x 0.11
= 60m3
First floor
53m of 270mm
wall
67m of 110mm
wall
3m
270mm
&
110mm
53 x 3 x 0.27
+
67 x 3 x 0.11
= 65 m3
So, the total volume of brick work = 63 + 60 + 65 = 168 m3
Estimation of carpentry work: From the architectural drawing the total volume of
carpentry work comes out to be 90m3 for window 47.3 m3 for doors and 175m3. So the
total volume of carpentry work comes out to be 302 m3 approximately.
a) No. of labour required for brickwork: 168m3brickwork is required to be done.
Let us assume for 1cubic meter of brick 50 hours. Number of weeks allotted for brick
work is 7.
Total no of labour hours for brickwork = 50 X 168 = 8400 hours
No. of labour required = (total number of labour hours ÷ days required for task)
hours anindividual works∈a day

= 8400
8 X 49 = 21.4 ≈ 22 labours
No. of labour required for carpentry work: 302m3 of carpentry are to be done.
Assuming for 1 m3 of carpentry work 45 hours of labour is required. Number of weeks
allotted for carpentry work.
Total no. of labour hours required = 45 X 302 = 13590 hours. Time allotted for carpentry
work is 9weeks = 63 days
No. of labour hours required = (total number of labour hours ÷ days required for task)
hours anindividual works∈a day
= 13590
8 x 63 = 26.9 ≈ 27
b) Strategy of planning in the three trades
Brickwork:
Bricks, cement & all the equipment must ordered 1 week prior to the starting of
construction work. Brickwork should be started on 13th week and get finished within 7
weeks. Brickwork must be started on 13th week from starting of construction.
Carpentry work:
Starting time of carpentry work is 21st week from starting. Ordering for carpentry work
related resources should be done at 5th week from starting of construction work. Time
allotted for completion of carpentry work is 9 weeks.
Scaffolding:
Scaffolding will be required simultaneously with brickwork and carpentry work total
volume of scaffolding work 2290 cubic meter. Scaffolding related resources must
ordered along with ordering of brickwork. Time required for erecting and dismantling
scaffolding is around 648 hours approximately. This time must so adjusted that there is
no delay in brickwork and carpentry work
c) Time required for scaffolding
Area of Garage, lower floor, ground floor & 1st floor is 99, 96.5, 295, 272 square
meters, height of each floor is 3 meter. So, the total volume of building =
(99+272+96.5+99)*3= 2290 cubic meter.
Assuming volume of scaffolding requirement is 30% of building volume

So, the total volume of scaffolding required = 687m3
Assuming time for erecting 1 m3of scaffolding to be 45 minutes.
Total time for erecting scaffolding = .45x687 = 309 hours
Total time for erecting and dismantling scaffolding = 2x309 = 618 hours
Yes I believe brickwork could be completed within this time period. Even if 0.3m
height of brick is laid in one day no of days required will be 30 and scaffolding work
requires less than 1 week making a total of 37days. Total time allotted for this work 7
weeks means 12 days extra is given. Carpentry work can be done within 9 weeks if
27 labours work for 8 hours day.
2. Special conditions
i) Brick must be of I class of standard specification made of good brick earth
thoroughly burnt, and shall be deep cherry red or copper colour. Brick shall
have minimum compressive strength of 1500lbs per sq. inch.
ii) Timber shall be as specified may be teak, sal etc. The timber shall be of best
quality well-seasoned and free from saps, knots, warps, cracks and other
defects.
iii) No wood work shall be fixed within 60cm of any fire place of flue.
iv) Necessary and suitable scaffolding shall be provided to facilate the
construction of brick wall. Scaffolding shall be sound and strong and the
member sufficiently strong.
3. Tender
Greenwich Road plans
Tender is supposed be on lump sum basis & include all cost associated with
completion of work. If your tender is accepted this contract will come into effect once
you signed the contract. If you find any error in the contract you must notify the the
architect before starting time of closing of contract. You must visit the site before
signing the contract and be satisfied with the field conditions.
Name of tendrer………………………… Licence number……………………………
Address…………………………………………………………………………………
…..
Mob. No. ……………………………….. Tel. no…………………………………
Fax……………………………………….
ABN…………………………………………

Signed by contractor……………………
General conditions
 There will be 1% penalty of total work cost due to delay in work or some
compensation may allowed if project manager find it reasonable.
 Contract price may be varied if and only if there is any dispensary in work,
there is variation in field condition anticipated by the architect, There is
variation in work & a breach in contract by the owner.
 New material must be used unless advised by the project maneger.
 Proper safety must be provided to the worker while execution of work.
 Work should be done with due care and skill.
Scope of work
This tender is Greenwich road plan site. There are two types of construction
need to be done.
i) Brickwall construction: total volume of brick work need to be built is
168 cubic meter approximately. Two types of wall are there one is
110mm thick and the other one is 270mm thick. Architectural drawing
mentions the places where these walls are required to be placed. Cost of
scaffolding is also included in the work.
ii) Carpentry work: A total approximate of 302 cubic meters of carpentry
work is need to done in this project. Doors, window, roof having slope
of 24 degree is to be built. Cost of scaffolding work should also be
included in this work
Project completion time
Starting time of brick work is 13th week after starting date of project and it is
allotted 7 week time for its completion. Ordering of bricks scaffolding
equipment, cement & aggregate must done 1 week prior to the starting of the
work.
Starting time of carpentry is 21st week after starting of project and is allotted 9
week time for completion ordering of equipment related to carpentry work is
supposed to be 5 week prior to starting of this work.
Tender must give detailed schedule of work in these 3 trades according to the
completion time alloted for these works.
Estimates of price

Name of
work
Number of
items
Class and
description of
work to be
executed
Unit of
calculation
Rate of
calculation
4a) list of interview questions to ask your sub-contractors at your pre-engagement
meetings.1
i) What is the structure of your company?
ii) Do you have prior experience with this type of project?
iii) Can you give me a timeline?
iv) Can you provide financial viability report of your company?
v) Questions that can break the deal?
vi) How much labour do you feel will be required in brickwork, carpentry and
scaffolding?
4b) SWOT analysis2
Strengths
Experience, completion of project
within timeline, skills & knowledge
Weaknesses
Over estimation of pricing, poor
reputation & low tangible assets of
company
Opportunities
Positive business perception, how
critical is timing for sub-contractor
Threats
Factors beyond the control of
contractor, obsolete services
4c) List of four items to be included in contract for bricklayer and carpenter.
1 - ‘company Kelly Service’ <http://www.kellyservices.com.au/AU/Careers/my-Career-Centre/Sample-Job-
Interview-Questions/#.V7UinZh97IV> assced 13 january 2020
2 Min Chen, SWOT analysis and strategies to support college physical education through distance education
‘Hunan International Economics University Hunan’ (2014) 12 LP 672

 Work must done with due care & skill.
 There should not be any negligence regarding safety measures.
 Work should be done with due diligence and within timeframe given.
 Work must be in accordance with plans specified in the contract
d.) Invitation of tender
Name of work ………. ……… Name of party tendering……………..
I hereby agree to execute the under mentioned description of work by piecework and in
accordance with the conditions noted below in consideration of payment being made by the
manager Louie division of work executed rate specified in the following schedule.
Dated …………. Signature of Party making tender (contractor)
Witness……….. Residence………………………………….
Accepted by tender (signature)……………….
Manger (signature) ………………………….
Invitation to the tender
Your company is invited to tender for the above-mentioned work. Tenders must be lodged in
accordance with the Tender Conditions in the attached tender document.
Yours faithfully,
Sign………….
Louie
4e) Key items that would include in an appeal process for sub-contracts.

i) It is important that all the problem of unsatisfactory work must be communicated
in written format or electronic devices.
ii) Make the requests with a specific recommendation for rectification after
considering your overall construction program.
iii) It is not necessary that contractor or subcontractor is always culprit for bad quality
work may be the supplier have sold faulty material, or the architect have design
the elements in wrong the actual culprit must be identified and penalty should be
lived on him.
iv) Excessive delay in completion of project.
v) Insufficient safety equipment
vi) Inferior quality of work
5. Management plan to ensure the sub-contractor meets the agreed schedule to meet your
original project target.
 Increment in daily target of contractor.
 Increment of resource like worker, construction material if required.
6. Scenario one: In this scenario health and safety of workman is at risk. This can
lead to injury to the worker. So, penalty of 2% of project cost must be levied on the
contractor as penalty.
Scenario two: This type of failure seems to be due to inferior quality material or due to
improper foundation of the wall. After investigation appropriate penalty must be
levied on culprit.
Scenario three: remedial or disciplinary action you would take to address this matter
is 15% of contract money should not be disbursed until few months so that if this kind
of situations comes contractor forced to take the corrective action and penalty of 1%
or less as decided by Sullivon Constructions site supervisor feels must be levied.
Breaches to statutory warrantee, licensing requirements, Australian Standards and/or
the National Construction Code (NCC).
 The project should be done as per guidelines with plans and specifications
listed in the contract
 The supplied materials must be suitable for the purpose for which they going
to be used.
 Only new material must be used. Unless specified.
 Work must be completed within specified time limit or with reasonable delay
in time limits.
 There should not any negligence while doing the work it must be performed
with care and skill.

Bibliography
Alhady, AM & Ezeldin, AS 2018, Construction Site Coordination and Management Guide,
Momentum Press, New York. Accesed on 13 january 2020
-‘company Kelly Service’ <http://www.kellyservices.com.au/AU/Careers/my-Career-
Centre/Sample-Job-Interview-Questions/#.V7UinZh97IV> accsed 13 january 2020
Min Chen, SWOT analysis and strategies to support college physical education through
distance education ‘Hunan International Economics University Hunan’ (2014) 12 LP 672
Accced on 13 January 2020