Abu Dhabi, United Arab Emirates. STANDARD CONSTRUCTION SPECIFICATIONS (PART 1 - ROADS, Second Edition 2020) - page 7

ONSTRUCTION

High visibility red and white markings shall be included as shown on the Contract plans and where
necessary, temporary fences shall have steady state or flashing lighting units attached to them.

7.7.3.6

Sand Fence Construction

a. Camel Fence Construction

Camel fence construction shall meet the applicable requirements of Article 7.7.3.4, as per the
manufacturers recommendations and as approved by the Engineer.

b. Sand Trapping Fence Construction

Installation of sand control fences shall be done in accordance with the applicable requirements of
Article 7.7.3.4

, in accordance with the manufacturer’s recommendations and as approved by the

Engineer.

Installation shall leave a bottom gap below the slats of 10 % of the height

Posts shall be bedded in either pre-cast or cast-in-place foundations, and plumbed vertically.

7.7.3.7

Animal Grid Construction

The width of the animal grid shall be fixed by the Engineer in accordance to the width of the gate or
road. The plain round bars shall be continuous over a minimum of two spans.

7.7.4

Median Fences, Steel

a. Description

The Contractor shall fabricate and erect steel median fences, Type 1 and Type 2, furnishing
all materials, labour, tools, equipment and appurtenances and performing all work as
indicated on the Drawings and in accordance with these Standard Specifications.

b. Materials

1. Steel for c-channels shall be to ASTM A36.

2. Steel for circular hollow sections shall be to ASTM A500, Grade A.

3. Steel for square hollow sections shall be to ASTM A500, Grade A.

4. Welded galvanized wires shall comply with ASTM A1064.

5.  All  sections  of  median  fences  shall  be  galvanized  after  fabrication  in  accordance  with
ASTM A123, A153 and A385, as applicable. The paint system for median fences shall consist
of  a  zinc  phosphate  pre-treatment  (primer)  followed  by  super  durable  polyester  powder
coating (PE SDF), or equivalent, to a minimum thickness of 100 microns.

6. All welding shall comply with the requirements of the applicable sections of Chapter 27.

7. All base plate and post fastening hardware shall be hot-dip galvanized steel (galvanized

to ASTM A153).

Alternatively,  hardware  may  be  stainless  steel  with  non-metallic  washers  and  sleeves.
Stainless steel bolts shall comply with ASTM A193, Grade B8,  Class 2; nuts shall comply
with ASTM A194, Grade 8; and flat washers with ASTM A240, Type 316.

8. Elastomeric bearing pads shall comply with the requirements of Chapter 25.

9.  Precast  concrete  foundations  shall  be  class  C25/20  concrete  as  per  requirements  of
Chapter  4  and  waterproofed  with  a  rubberized  bituminous  coating,  as  indicated  on  the
drawings,  and  shall  meet  the  requirements  for  quality  and  construction  as  specified  in
Chapter 4, Concrete Works of these Standard Specifications.

c. Fabrication and Erection

All metal median fencing shall be fabricated and erected in sections to the line and grades
indicated on the Drawings and shall not reflect any unevenness in the structure. Unless
otherwise specified or indicated on the Drawings, all railing posts shall be vertical.

The fabrication and erection of all metal median fencing shall comply with the requirements
of Chapter 23 and as specified herein.

The ends of all tubular sections shall be capped or covered with a welded steel plate.

d. Information Required

The Contractor shall supply the Engineer with detailed shop drawings in accordance with the
requirements of Chapter 1 of these Standard Specifications. The shop drawings shall indicate
all materials, details, and other technical information to clearly show the fabrication and
erection of all median fencing sections.

7.8 Decorative Finishes for Concrete and Masonry

Decorative concrete finishes types shall be of the type as shown on the Contract plans, as may be
required in the Particular Specifications and as approved by the Engineer. In general, colour coatings
of concrete surfaces shall comply with the applicable material and installation requirements of
Sections 24.1 and 24.7 of Chapter 24, Painting, of these Standard Specifications. Protective surface
waterproofing shall meet the requirements of Chapter 28, Waterproofing.

The Contractor shall prepare and submit to the Engineer for approval trial samples of the type and
colours as shown on the Contract plans or as included in the Particular Specifications.  Trial sample
sizes,  numbers  and  methods  shall  be  agreed  with  the  Engineer  prior  to  preparation  which  may
require a full size trial section for final approval by the Owner.

7.8.1 Concrete Colour Pigment

Pigments for cement and cement products shall conform to the requirements of BS 1014. Dry-shake
colour hardener or integral concrete colourant shall be as shown on the Contract plans and as
approved by the Engineer. Pigment shall be in the form of dry, soft powder and shall not contain
chemical compounds capable of affecting adversely the setting and development of strength of the
cement and other properties of the finished products and shall be compatible with other admixtures
used in the same mix.

Minimum pigment content shall be 5 % by weight of cement, unless otherwise approved by the
Engineer.

Coloured wax meeting the requirements of ASTM C309 shall be used as a curing membrane, unless
otherwise as shown on the Contract plans.

7.8.2 Plaster for Decorative Finishing

7.8.2.1

Description

This section defines a cement plaster system directly applied on concrete and concrete blocks.

7.8.2.2

General

Plaster shall comply with provisions of ACI 301, ACI 318, and CRSI

Manual of standard practice

—

except where more stringent requirements are indicated.

Shop drawings showing locations and installation of control and expansion joints, including plans
and elevation sections and details of component and attachments to other works shall be submitted
by the Contractor.

Surfaces shall be constructed such that the maximum gap between a 3 m straightedge and any point
on the surface shall be 3 mm.

Prior to installing plaster work, the Contractor shall construct panels measuring at least 3 m by 3 m
and demonstrating finish and application required, aesthetic effects, and qualities of materials and
execution. Test panels shall not be part of permanent works.

7.8.2.3

Materials

Plaster shall be composed of materials meeting the requirements specified in this section of these
Standard Specifications, Table 7-40, the referenced standards, and any additional qualifications as
stated on the Contract plans or as directed by the Engineer.

Table 7-40 Plaster material requirements

Material

Specifications Requirements

Cement

Section 4.3.1 of Chapter 4, Concrete Works; Type I

Lime

BS EN 459-1

Special hydrated lime for finishing purposes meeting the
requirements of ASTM C206, Type S

Sand

ASTM C 897, graded per Table 7-41

Bonding agent

ASTM C 932 and as approved by the Engineer

Concrete pigment

Section 7.8.1

Plaster shall be tested in accordance with BS 4551, Method of testing mortars, screeds, and plasters.

Table 7-41: Sand for plaster

Sieve Size (mm)

Percent Retained by Weight

4.75

2.36

1.18

600 μm

300 μm

150 μm

100

75 μm

100

Plaster mixes shall meet the requirements of ASTM C926. All mix proportions included herein are
suggestive, variations to meet local conditions and achieve the desired finish are permitted within
the limits specified in ASTM C926.

Interior plastering shall be 20 mm thick. Proportions of mixes given are for damp, loose sand.

Table 7-42: Suggested mix proportions for interior plastering

Coat

Suggested Mix Proportions by Volume

Scratch coat on masonry
or concrete

Portland cement, sand, and coarse aggregate (2.38-mm maximum),
1:1:1/4

Brown coat

Portland cement, hydrated lime, sand, 1:1/4: 3

Finish coat (skim coat)

Type N hydrated lime in putty as ASTM C206

ENERAL

a. Activity identification number

b. Activity description

c. Original duration

d. Remaining duration

e. Early start date (actual start on updated progress schedules)

f. Early finish date (actual finish on updated progress schedules)

g. Late start date. (early start on updated progress schedules)

h. Late finish date. (early start on updated progress schedules)

i. Total float

j. Cost-loading:

1. Note the estimated cost to perform each work activity as per the approved rates, including

submittals and submittal reviews, in the network in a tabular listing.

2. Sum of all activity costs shall equal the Contract price. An unbalanced or front-end-loaded

schedule will not be acceptable.

3. Accepted cost-loaded progress schedule shall constitute the schedule of values.

1.10.9

Progress Quantity Charts

Reflect activity and Contract dates of progress schedule and show the planned number of units of
production for each of above listed activities and cumulative progress to date and show average rate
and cumulative curves for initial projected progress, actual progress, and revised planned project
progress.

Submit revised progress quantity charts for each production activity named with each progress
schedule submission.

1.10.10

Progress of the Work

A progress schedule shall document work progress in accordance with the following requirements:

a. Updated progress schedule shall reflect:

1. Progress of work to within 5 working days before submission

2. Approved changes in work scope and activities modified since submission3. Delays in

submittals or resubmittals, deliveries, or work

3. Adjusted or modified sequences of work

4. Other identifiable changes

5. Revised projections of progress and completion

6. Report of changed logic

b. Produce detailed and specific schedule reports during the project, upon request of Engineer,

to further define critical portions of the work

c. If the Contractor fails to complete an activity by its latest scheduled completion date and this

failure is anticipated to extend  Contract dates (or milestones), the Contractor shall, within 7
days of such failure, submit a written statement as to how  the Contractor intends to correct
non-performance  and  return  to  acceptable  current  progress  schedule.  Actions  by  the
Contractor to complete the work within Contract times (or milestones) will not be justification
for adjustment to Contract price or Contract times.

d. The Engineer may order the Contractor to increase plant, equipment, labour force or working

hours if the Contractor fails to:

1. Complete a milestone activity by its completion date

2. Satisfactorily execute work as necessary to prevent delay to overall completion of project,

at no additional cost to Owner.

1.10.11

Narrative Progress Report

The Contractor shall provide a narrative progress report that meets the following requirements:

1.10.11.1 Format

a. Organize same as progress schedule

b. Identify, on a cover letter, reporting period, date submitted, and name of the Contractor

1.10.11.2 Contents

a. Number of days worked over the period, work force on hand, construction equipment on hand

(including utility vehicles such as pickup trucks, maintenance vehicles, stake trucks)

b. General progress of work, including a listing of activities started and percentage of completion

over the reporting period, mobilization/demobilization of subcontractors, and major milestones
achieved

c. The Contractor

’s plan for management of site (e.g., lay down and staging areas, construction

traffic), utilization of construction equipment, build-up of trade labour, and identification of
potential Contract changes

d. Identification of new activities and sequences as a result of executed Contract changes

e. Documentation of weather conditions over the reporting period, and any resulting impacts to

the work.

f. Description of actual or potential delays, including related causes, and the steps taken or

anticipated to mitigate their impact

g. Changes to activity logic

h. Changes to the critical path

i. Identification of, and accompanying reason for, any activities added or deleted since the last

report

j. Steps taken to recover the schedule from the Contractor-caused delays

1.10.12

Progress Schedule Acceptance

Progress schedule acceptance will comply with the following requirements:

1.10.12.1

Engineer’s Acceptance

Engineer

’s acceptance will demonstrate agreement that:

a. Proposed progress schedule is accepted with respect to:

1. Contract dates, including final completion and all intermediate milestones are within the

specified times

2. Specified work sequences and constraints are shown as specified

3. Access restrictions are accurately reflected

4. Start-up and testing times are as specified

5. Submittal review times are as specified

6. Start-up testing duration is as specified and timing is acceptable

b. In all other respects, Engineer

’s acceptance of the Contractor’s schedule indicates that, in

Engineer

’s judgment, schedule represents reasonable plan for constructing project in

accordance with the Contract documents. Engineer

’s review will not make any change in

Contract requirements. Lack of comment on any aspect of schedule that is not in accordance
with the Contract documents will not thereby indicate acceptance of that change, unless the
Contractor has explicitly called the non-conformance to Engineer

’s attention in submittal.

Progress schedule remains the Contractor

’s responsibility and the Contractor retains

responsibility for performing all activities, for activity durations, and for activity sequences
required to construct project in accordance with the Contract documents.

1.10.12.2 Unacceptable Preliminary Progress Schedule

a. Make requested corrections; resubmit within 10 calendar days

b. Until acceptable to Engineer, the Contractor shall continue review and revision process, during

which time the Contractor shall update schedule on a monthly basis to reflect actual progress
and occurrences to date

1.10.12.3 Unacceptable Detailed Progress Schedule

a. Make requested corrections; resubmit within 10 days

b. Until acceptable to Engineer, the Contractor shall continue review and revision process

1.10.12.4 Narrative Report

All changes to activity logic, duration, sequences, including addition or deletion of activities
subsequent to Engineer

’s acceptance of baseline progress schedule, shall be delineated in the

narrative report current with proposed updated progress schedule.

1.10.13

Adjustment of Contract Dates

Evaluation and reconciliation of adjustments of Contract times shall be based on the updated
progress schedule at the time of proposed adjustment or claimed delay and as follows:

1.10.13.1 Schedule contingency

a. Use of schedule contingency suppression techniques such as preferential sequencing and

extended activity times is prohibited.

b. Pursuant to contingency sharing provisions of this specification, no time extensions will be

granted, nor will delay damages be paid until a delay occurs which (1) consumes all available
contingency time, and (2) extends work beyond the Contract completion date

1.10.13.2 Float

a. Use of float suppression techniques such as preferential sequencing or logic, special lead/lag

logic restraints, and extended activity times are prohibited. Use of float time disclosed or
implied by use of alternate float-suppression techniques shall be shared to proportionate
benefit of the Owner and the Contractor.

b. Pursuant to above float-sharing requirement, no time extensions will be granted nor delay

damages paid until a delay occurs which an

impacts project’s critical path. consumes available

float or contingency time and extends work beyond Contract completion date

1.10.13.3 Claims based on Contract dates

a. Where Engineer has not yet rendered formal decision on the Contractor

’s Claim for adjustment

of Contract times, and parties are unable to agree as to amount of adjustment to be reflected
in progress schedule, the Contractor shall reflect an interim adjustment in the progress
schedule as acceptable to Engineer.

b. It is understood and agreed that such interim acceptance will not be binding on either the

Contractor or the Owner, and will be made only for the purpose of continuing to schedule work
until such time as formal decision has been rendered as to an adjustment, if any, of the
Contract times.

c. The Contractor shall revise progress schedule prepared thereafter in accordance with

Engineer

’s formal decision.

1.10.14

Qualifications for Personnel Responsible for Schedules

The Contractor shall designate a team with an authorized representative who shall be responsible
for the preparation of all required progress schedule reports. This person shall be dedicated full-time
to preparing all required schedule reports. This person shall be a qualified project controls Engineer
or a planning Engineer who has previously created and reviewed computerized schedules.
Qualifications of this individual shall be submitted to the Engineer for review with the preliminary
progress schedule submission.

1.11

Submittal Procedures

This section describes submittal procedures, standards, and requirements for the following items:

1. Product data

2. Shop drawings

3. Samples

4. Operation and maintenance manuals

5. Certificates and affidavits

6. Miscellaneous submissions

7. Contract plans

8. Mistakes in Information

1.11.1

Definitions

This section defines submittal procedure terms.

a. Product data and shop drawings:

1. Includes drawings, diagrams, illustrations, brochures, schedules, bills of materials, and

other data prepared specifically for the works

2. Information may be prepared by the Contractor, his subcontractors, suppliers or distributors,

equipment manufacturer, or fabricators

3. Information must illustrate or describe manufacture, fabrication, construction, and

installation of the works or a portion thereof

Manufacturer’s representative:

Person actively working at manufacturer’s factory with minimum 5 years experience

2. Familiar with actual problems of manufacturing, installing, and operating the product

3. Sales representatives or agents are not acceptable

c. Working (shop) drawings:

1. The Contractor prepared plans for temporary structures and facilities

2. Elements of work which may affect the safety of persons or property shall be checked and

certified by a qualified Engineer

3. Calculations demonstrating adequacy of the Contractor

’s design shall be submitted with the

working drawings

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