Abu Dhabi, United Arab Emirates. STANDARD CONSTRUCTION SPECIFICATIONS (PART 1 - ROADS, Second Edition 2020) - page 6

5. The Contractor shall provide the names and details of the experience, qualifications and

previous appointments for the supervisory staff including those of the Subcontractors who will
be allocated to the project all as stipulated under the Department of Transport Conditions of
Contract and Schedule of Further Requirements.

6. The Contractor

’s project manager shall be a degreed Engineer and have documented and

recognized experience which shall include previous experience as a project manager and
he/she shall be full-time assigned to the site. The Contractor

’s project manager shall have a

minimum of 20-years proven experience as a project manager for construction projects similar
in nature to the current contract plus be in continuous employment with The Contractor

’s

organization for at least the last two years.

7. The Contractor

’s supervisory staff submittal shall include project nominated sponsors who are

the senior officers or operational managers from the Contractor’s headquarters or main office
who are also shown as senior persons within the Contractors overall corporate organizational
structure.

8. A full-time safety Engineer shall be assigned to the site to manage the Contractor

’s health and

safety plan.

9. Submittal shall include the personal contact information, including telephone numbers and

email addresses where the Contractor organization’s sponsors, project manager, safety
engineer and other senior site supervisory staff can be reached as applicable for both normal
working coordination or

in case of emergency by the Owner or the Owner’s representatives.

1.9.2

Use of Site

The Contractor shall not use the site for any purpose other than carrying out the works.

1.9.3

Advertising

Do not display or permit advertisements to be displayed on the site without written approval of the
Owner.

1.9.4

Working Hours

Normal working hours shall be 48 hours per week, Saturday through Thursday. The Contractor shall
comply with Labour Laws and requirements of the Department of Transport Conditions of Contract
and Schedule of Further Requirements.

1.9.5

Work Schedule Notifications

a. Any work done in the absence of the Engineer or his authorized inspector may be subject to

rejection.

b. The Contractor shall notify the Engineer three working days in advance of any work to be done

in order that inspection services may be provided.

c. Inspection by the Engineer during defects liability period is to be performed as follows:

1. Engineer will give the Contractor due notice of his intention to carry out any inspections

during the defects liability period.

2. The Contractor shall arrange for a responsible representative to be present at the times and

dates named by the Engineer.

3. The Contractor

’s representative shall render all necessary assistance and take note of all

matters and issues to which the Engineer directs his attention.

1.9.6

Adjoining Plant and Property

The Contractor shall meet the following requirements pertaining to adjoining construction plant and
property.

1. Take all reasonable precautions to avoid interference with the operation of and to prevent

damage to adjoining plant and property.

2. Obtain permission as necessary from the concerned authority and pay all necessary charges

if required to use adjoining property.

3. Clear away and make good on completion or when directed.

1.9.7

Temporary Work

Provide and maintain during the execution of the works all shoring, strutting and other supports as
may be necessary to preserve the stability of all plant and property that may be endangered or
affected by the works. Temporary diversion of traffic shall be as per the requirements of Section
1.15.13.

1.9.8

Coordination

The Contractor shall provide coordination assurances for the following items:

1.9.8.1

General

a. Coordinate construction activities included under various sections of these specifications to

assure efficient and orderly installation of each part of the works.

b. Coordinate construction operations included under different sections of the specifications that

are dependent upon each other for proper installation, connection and operation.

c. Where installation of one part of the work is dependent on installation of other components,

either before or after its own installation, schedules detailed design and construction activities
in the sequence required to obtain the best results.

d. Where availability of space is limited, coordinate installation of different components to assure

maximum accessibility for required maintenance, service and repair.

e. Make adequate provisions to accommodate items scheduled for later installation.

f. Where necessary, prepare memoranda for distribution to each party involved outlining special

procedures required for coordination. Include such items as required notices, reports and
attendance at meetings.

g. Prepare similar memoranda for the Engineer and separate Contractors, where coordination of

their work is required.

1.9.8.2

Administrative Procedures

a. Contractors constructing other utilities and buildings may be working in the vicinity of the works

during the course of this Contract.

b. Co-ordinate scheduling and timing of required administrative procedures with other

construction activities to avoid conflicts and ensure orderly progress of the work. Such
administrative activities include, but are not limited to, the following:

1. Preparation of schedules

2. Preparation of project correspondence

3. Preparation of submittals

4. Progress and coordination meetings

5. Estimating and pricing Variation Orders

6. Project closeout activities

1.9.8.3

Drawings

a. The Contractor shall be responsible for and shall pay the extra cost, if any, occasioned by any

discrepancies, errors, or omissions in the drawings and other submittals furnished by him,
whether or not approved by the Engineer.

b. Prepare and submit coordination drawings where close and careful coordination is required:

1. Installation of products

2. Materials fabricated off-site by separate entities

3. Where limited space availability necessitates maximum utilization of space for efficient

installation of different components.

c. Drawings shall indicate:

1. Interrelationship of components detailed on separate shop drawings

2. Required installation sequences

3. Comply with requirements contained in Section 1.11.

4. Take special care and precautions for specific coordination requirements for plant,

equipment and other electromechanical installations, specified elsewhere or otherwise
required.

1.9.8.4

Specifications

a. Arrangement of the specifications into divisions, sections and paragraphs shall not control or

determine the division of work among subcontractors nor establish the extent of work to be
performed by any particular trade.

b. The Contractor shall be responsible for the proper coordination of all Works including that

required between different trades, Subcontractors, suppliers, utility authorities, government
authorities, etc.

1.9.9

Work Plan

The Contractor shall submit his Construction work plan including his entire working procedure,
forms, administration, submission of technical documents, correspondence, reporting, meeting,
documentation, communication, etc, as otherwise may be specified or as required by the Engineer.
The Contractor

’s work plans shall meet the following requirements:

1. The Contractor shall provide a work plan for each key activity, as requested by Engineer, to

show construction methods. Relate the work plan to activities shown on the project schedule

2. The Contractor shall conduct a pre-work coordination meeting before the start of the work in

each work zone or where a change in the construction operations is contemplated

3. The Contractor shall include in its baseline schedule and all progress schedules, allowances

for normal inclement weather

1.9.10

Daily Report

Refer to Sections 1.13 and 1.13.10 , for daily reporting requirements.

1.9.11

Plant Record

Submit a daily record to the project Engineer in a format that the Engineer has approved, showing
the type, model, number of hours worked, and capacity of all mechanical and power operated plant
employed on the works. The Contractor shall incorporate this record in the daily report; refer to
Section 1.131.9.10.

1.9.12

Defective Work

When  any  part  of  the  works  is  known  or  suspected  to  be  defective,  the  Contractor  shall  submit
proposals  as  soon  as  possible  to  the  Engineer  for  his  approval  for  further  testing,  opening  up,
inspection, making good or removal and re-execution.

Whenever  inspection  or  testing  shows  that  any  part  of  the  works  is  not  in  accordance  with  the
Contract,  the  Contractor  shall  take  necessary  measures,  such  as  further  testing,  opening  up,  or
experimental  work,  to  establish  the  acceptability  of  the  work.    Such  measures  shall  be  at  the
Contractor

’s expense and shall not be grounds for extension of time.

1.9.13

Representatives for Emergencies

The Contractor shall file with the Engineer, the names, addresses, and telephone numbers of
representatives who can be contacted at any time, in case of emergency. Representatives must be
fully authorized and equipped to correct unsafe or excessively inconvenient conditions at short
notice.

1.9.14

Maintaining Existing Facilities in Operation

The Contractor shall carry out the works in such manner to avoid disruption to existing utilities. In no
case shall the Contractor interfere with the operation of existing facilities, pipelines, cables etc.,
without first obtaining the permission of the Engineer, the Owner and the relevant authority to which
such facility pertains.

1.9.15

Working Hours and Engineers Supervision

No work shall be carried out during the night, on Fridays or on public holidays without the permission
in writing of the Engineer, except when the work is unavoidable or absolutely necessary for the
saving of life or property or for the safety of the works in which case the Contractor shall immediately
advise the Engineer.

1.10

Construction Progress Documentation

Construction progress documentation shall meet the requirements outlined in this section.

1.10.1

Submittals

a. The Contractor shall submit the following: Preliminary progress schedule to the Engineer no

later than 14 calendar days after notice of commencement for approval.

b. Detailed progress schedule, as follows:

1. Submit initial detailed progress schedule within 28 calendar days after notice of

commencement for approval by Engineer. The Contractor shall resubmit until such time as
it has been approved by the Engineer.

2. Submit an updated progress schedule utilizing the critical path method (CPM).

c. Submit the following with each progress schedule submission:

1. The Contractor

’s certification that progress schedule submission is the actual schedule

being utilized for execution of the work.

2. CD with .XER file of the progress updated schedule prepared with the latest version of (P6)

Enterprise Project Portfolio Manager or Professional Project Manager from Primavera
Systems Incorporated or similar.

3. Progress schedule: 5 legible copies

4. Narrative progress report: 5 legible copies

5. Progress quantity chart(s)

ORKS

Second Edition -SEP 2020

All mortar shall be conveyed fresh to the site of the works as required for use. Mortar which has
begun to set or which has been site-mixed for a period of more than one hour in the cases of Classes
M1, M2, M5 and M6, and two hours in the case of classes M3, M4, M7 and M8 shall not be used.

4.3.10.5

Shotcrete

Shotcrete, also called pneumatically placed concrete, shall be proportioned to produce a nominal 30
MPa compressive strength at 28-days.  Shotcrete mix design and evidence that the proposed design
will  produce  the  required  compressive  strength  shall  be  submitted  to  the  Engineer  for  approval.
Constituent materials shall meet the following requirements of these Standard Specifications:

1. Cement

– Section 4.3.1: Low-alkali cement in cases where the aggregates are reactive with

the alkalies in cement. Type V cement in cases where the shotcrete will be exposed to sulfates,
such as used in the coastal areas. Type III cement in cases where high early strength is
required.

2. Admixtures

– Section 4.3.6: Per approval of the Engineer.

3. Fine aggregate

– Type 2 per Table 4-10

4. Coarse aggregate

– Size 8 per Table 4-11

Admixtures  shall  be  used  only  with  written  approval  of  the  Engineer.    If  admixtures  are  used  to
increase  workability,  to  reduce  water-to-cement  ratio,  to  retard  or  accelerate  setting  time,  or  to
accelerate the development of strength, the admixtures shall be used at the rate specified by the
manufacturer and approved by the Engineer.

Shotcrete for reinforced concrete slope protection, shall be 1-part cement to 4.5 parts sand. Fine
aggregate moisture content at time of use shall be 3 % to 6 % by weight.

Two test cubes

shall be made for each full day’s operation. Test cubes shall be tested as required

in Article 4.3.12.3. Cubes shall develop a minimum compressive strength of 28 MPa at 28 days.

Shotcrete facing shall conform to the requirements of Section 7.3.3 of Chapter 7, Incidental
Construction.

4.3.10.6

Permeable Concrete

High porosity is attained by a highly interconnected void content. Typically, permeable concrete has
little or no fine aggregate and has just enough cementitious paste to coat the coarse aggregate
particles, while preserving the interconnectivity of the voids.

Permeable concrete mix design shall be submitted to the Engineer for approval with evidence that
the proposed design will produce the required compressive strength per ASTM C39M, void space,
and initial permeability. Contractor shall prepare trial pavement sections for inspection of the in-situ
concrete properties, as well as

a demonstration of the Contractor’s proposed installation methods,

for approval by the Engineer. Constituent materials shall meet the following requirements:

1. Cement

– Section 4.3.1: Utilize Type V in coastal areas and Type I or II for inland areas

2. Admixtures

– Section 4.3.6

3. Aggregate

– Section 4.3.7

Table 4-22: Typical permeable concrete mix design

Material

Typical value

Cement (any type)

224 kg to 388 kg

Coarse aggregate

1,431 kg to 1,670 kg

Water-to-cement ratio

0.27 to 0.38

Admixtures

Retarders

ORKS

Second Edition -SEP 2020

Flexural strength of the cured pavement can range from 3.5 MPa to 5.0 MPa.

Mixes shall be designed in accordance with the ACI Design Guide 211, Appendix 6. Due to the
relatively low water content of the concrete mix, an admixture is required to retard the concrete set
time.

Permeable pavement shall have an in-place void space of at least 15 %, which allows rapid
percolation of stormwater through pavements. Initial permeability of cured pavements, in clean
conditions, shall be at least 5 m/hr.

4.3.10.7

Contents of Chlorides and Sulphates

Total water soluble chloride ion (Cl

) content of the mixed concrete shall not exceed 0.06 % by weight

of cementitious material for prestressed concrete nor 0.10 % by weight of cementitious material for
reinforced concrete. An initial evaluation may be obtained by testing individual concrete ingredients
for total chloride ion content per AASHTO T 260 and totalling these to determine the total water
soluble chloride ion or the total water soluble chloride ion in accordance with ASTM C1218M.

Sulphate in the concrete shall not exceed 800 ppm when calculated on the total concrete mass, or
5,000 ppm when calculated on the amount of the cement in the actual mix.

Total sulphate content of the concrete mix, expressed as SO

, shall not exceed 4 % (m/m) of the

cementitious binder content of the mix per ASTM C265. Sulphate content shall be calculated as the
total from the various constituents of the mix.

4.3.11

Concrete Batching Requirements

All concrete shall be batched in a prequalified manual, semi-automatic, or automatic plant as
described in this section of these Standard Specifications. Delays to the Contractor due to problems
in getting the plant certified shall not be the responsibility of the Engineer.

4.3.11.1

Batching Plant

Concrete batch plant shall be suitable in type, capacity and design for its purpose and acceptable to
the Engineer. Batch plants shall meet the requirements specified herein and per the applicable
requirements of Article 4.3.11.3.

Continuous mixers shall not be permitted. Mixers for designed mixes shall be of the pan type. Mixers
and their accessories shall be to an internationally recognised standard such as BS 1305, and shall
be in good condition. Performance of the batch plant and its disposition shall be adequate for the
Contractor’s work programme and acceptable to the Engineer. Mixers shall operate at the speeds
and mix for at least the length of time recommended by the manufacturer. Mixing time shall be
increased if necessary to achieve a uniform distribution of materials in the mix and a uniform colour.

Mixers which have been out of use for more than 30 minutes shall be thoroughly cleaned before any
fresh concrete is mixed. Unless otherwise agreed by the Engineer, a small first batch shall be used
to coat the mixer, and this coating batch shall not be incorporated in the works.

Standby mixing capacity shall be provided by the Contractor (sufficient to ensure continuity of
concreting in the event of breakdowns of mixing plant) and shall be maintained ready for immediate
use during the course of all concrete pours.

Precautions shall be taken to avoid the loss of cementitious material during windy conditions. The
batching  plant  shall  have  separate  balances  for  cementitious  materials  and  aggregates  unless
otherwise agreed by the Engineer. Weighing and water dispensing mechanisms shall be maintained
in good order, and their accuracy shall be maintained to ensure batch weights within the tolerances
required  by  the  AASHTO  LRFD  specification.  Facilities  shall  be  provided  for  calibration  of  all
weighing equipment, gauges and meters for use in the manufacture of concrete. Calibration checks
shall be carried out jointly with the Engineer at monthly intervals.

ENERAL

d. Before final payment, submit a final updated progress schedule.

1.10.2

Project Schedule

The Contractor shall use the critical path method (CPM) for preparing all project schedules, hereafter
defined as the progress schedule.

1.10.3

Software

The Contractor shall use the following software applications to prepare the project schedule:

1. Professional Project Manager or Enterprise Project Portfolio Manager (P6) latest version, from

Primavera Systems Incorporated or similar.

2. The Contractor shall provide to the Engineer one license of the latest version of the scheduling

software. This license shall be added to the license serial number of the Owner.

1.10.4

Basis for Payment

The Contractor shall comply with the following requirements for basis of payment.

1.10.4.1

General

Schedule  shall  be  the  basis  for  measuring  the  Contractor  progress.  Failure  of  the  Contractor  to
provide  all  information,  as  specified  below,  shall  result  in  the  disapproval  of  the  entire  progress
schedule  submission  and  may  result  in  the  inability  of  the  Engineer  to  evaluate  the  Contractor
progress for payment purposes.

1. Failure to submit acceptable progress schedule or progress schedule revisions If the

Contractor fails within the time limits set forth in this article to submit an acceptable progress
schedule, or fails to submit acceptable progress schedule revisions for modifications issued
under the terms of this Contract, or fails to submit acceptable progress schedule revisions
otherwise required, or to adequately status the progress schedule, or perform an acceptable
mathematical analysis, to provide acceptable progress reports as required by this article, the
Engineer may, in addition to other remedies provided under this article, withhold approval of
all or any portion of the progress payments until an acceptable revision, status, mathematical
analysis, or progress report is submitted and approved.

1.10.4.2

Non-Compliance

Failure of the Contractor to comply with the requirements of the Engineer under this article shall be
grounds for a determination by the Engineer that the Contractor is not prosecuting the work with
sufficient diligence to ensure completion within the time specified in the Contract. Upon making this
determination, the Owner may terminate the Contractor's right to proceed with the work, or any
separable part of it, in accordance with the default terms of this Contract.

1.10.4.3

Errors and unrealistic and/or unreasonable logic

In the event that any error, or unrealistic or unreasonable component, parameter, logical relationship
or activity duration results is discovered in an approved network, or updating information,
mathematical analysis, progress report, or pay estimate, the Engineer may require the Contractor to
correct, revise and resubmit the network, or status information, or mathematical analysis, or progress
report, or payment estimate for approval. Any payment amount made on the basis of such error, or
unrealistic or unreasonable component, parameter or result may be adjusted by the Engineer in
subsequent payment estimates.

1.10.5

Preliminary Critical Path Method

In addition to basic requirements outlined in the Department of Transport Conditions of Contract and
Schedule of Further Requirements, the Contractor shall show, using the critical path method (CPM),

a detailed schedule, beginning with notice to commence, for at least 90 days, and a balance
summary for a project through final completion. Show at least the following activities:

1. Notice to commence

2. Permits

3. Design period, by phases of design

4. Submittals, with review time. The Contractor may use schedule of shop drawings and samples

specified in Section 1.11.

5. Submittals of the Contractor quality control plan and health and safety plan

6. Early procurement activities for long lead equipment and materials

7. Mobilization

8. Engineer

’s review periods

9. Earthwork

10. Specified work sequences and construction constraints

11. Tender schedule

12. Contract milestone and completion dates

13. Major structural, mechanical, equipment, electrical, architectural, and instrumentation and

control work

14. System start-up summary

15. Project close-out summary

16. Demobilization summary

Update preliminary progress schedule monthly; as part of progress payment process. Failure to do
so may cause Engineer to withhold all or part of the monthly progress payment until the preliminary
progress schedule is updated in a manner acceptable to Engineer. Format a detailed progress
schedule in accordance with Section 1.10.7 and Section 1.10.5.

1.10.6

Detailed Progress Schedule

Detailed progress schedules shall comply with the following requirements:

1. In addition to requirements of the Department of Transport Conditions of Contract and

Schedule of Further Requirements, submit detailed progress schedule beginning with notice
to commence and continuing through final completion.

2. Show the duration and sequences of activities required for complete performance of the work

reflecting means and methods chosen by the Contractor.

3. When accepted by Engineer, detailed progress schedule will replace preliminary progress

schedule and become baseline schedule. Subsequent updated submittals will be considered
as updated progress schedules.

4. Format a detailed progress schedule in accordance with Section 1.10.7 and Section 1.10.5.

5. Update monthly to reflect actual progress and occurrences to date, including weather delays

using a date agreed with the Engineer.

1.10.7

Progress Schedule Bar Chart

The Contractor shall provide a progress schedule bar chart that meets the following requirements:

1.10.7.1

General

comprehensive bar chart schedule, generally as outlined in Associated General Contractors of
America Publication No. 1107.1, “Construction Planning and Scheduling, latest edition. If a conflict
occurs between the AGC publication and this specification, this specification shall govern.

ENERAL

1.10.7.2

Format

a. Unless otherwise approved, white paper, A3 sheet size

b. Title block: Show name of project and Owner, date submitted, revision or update number, and

name of the Contractor

c. Identify horizontally, across the top of the schedule, the time frame by year, month, and day

d. Identify each activity with a unique number and a brief description of the work associated with

that activity.

e. Legend: Describe standard and special symbols used.

1.10.7.3

Contents

Identify, in chronological order, those activities reasonably required to complete the Work, including
as applicable, but not limited to:

a. Obtaining permits, submittals for early product procurement, and long lead time items

b. Mobilization and other preliminary activities

c. Initial site work

d. Specified work sequences, constraints, and milestones, including substantial completion

date(s)

e. Subcontract work

f. Major equipment design, fabrication, factory testing, and delivery dates

g. Site work

h. Concrete work

i. Structural steel work

j. Architectural features work

k. Equipment work

l. Mechanical work

m. Electrical work

n. Instrumentation and controls work

o. Other important Work for each major facility

p. Equipment and system start-up and test activities

q. Project closeout and cleanup

r. Demobilization

1.10.8

Progress Schedule Using Critical Path Method

The Contractor shall apply the critical path method (CPM), in accordance with the following
requirements, to prepare progress schedules:

1.10.8.1

General

Comprehensive computer-generated schedule using CPM, generally as outlined in Associated
General Contractor

s of America Publication No. 1107.1, “Construction Planning and Scheduling”,

latest edition. If a conflict occurs between the AGC publication and this specification, this
specification shall govern.

1.10.8.2

Contents

a. Begin schedule with notice-to-commencement date and conclude with the date of final

completion of defects liability period and end of maintenance period.

b. Identify work calendar basis using days as a unit of measure and UAE calendar.

c. Show complete interdependence and sequence of construction and project related activities

reasonably required to complete the work. Identify the work of separate sections (or areas)
and stages and other logically grouped activities, and clearly identify critical path of activities.
Reflect sequences of the work, restraints, delivery windows, review times, Contract times and
project milestones set forth in the agreement. Include as applicable, at a minimum:

1. Obtaining permits, submittals for early product procurement, and long lead time items

2. Mobilization and other preliminary activities

3. Initial site work

4. Specified work sequences, constraints, and milestones, including substantial completion

date(s)

5. Subcontract work

6. Major equipment design, fabrication, factory testing, and delivery dates

7. Site work

8. Concrete work

9. Architectural features work

10.

Equipment work

11.

Mechanical work

12.

Electrical work

13.

Instrumentation and control work

14.

Other important work for each major facility

15.

Equipment and system start-up and test activities

16.

Project closeout and cleanup

17.

Demobilization

d. No activity duration, exclusive of those for submittals review and product fabrication/delivery,

shall be less than 1 day or more than 21 days, unless otherwise approved.

e. Activity duration for submittal review shall not be less than review time specified unless clearly

identified and prior written acceptance has been obtained from the Engineer.

1.10.8.3

Network Graphical Display

a. Plot or print on paper not greater than A0 or smaller than A1, unless otherwise approved.

b. Title block: Show name of the Project, Owner, Engineer, Contractor, date submitted, revision

or update number, and the name of the scheduler. Updated schedules shall indicate data date.

c. Identify horizontally across top of schedule the time frame by year, month, and day.

d. Identify each activity with a unique number and a brief description of the work associated with

that activity.

e. Indicate the critical path.

f. Show, at a minimum, the controlling relationships between activities.

g. Plot activities on a time-scaled basis, with the length of each activity proportional to the current

estimate of the duration.

h. Plot activities on an early start basis unless otherwise requested by Engineer.

i. Provide a legend to describe standard and special symbols used.

1.10.8.4

Schedule Report

On A4 white paper, unless otherwise approved. List information for each activity in tabular format,
including, at a minimum:

Content .. 4 5 6 7 ..