Abu Dhabi, United Arab Emirates. STANDARD CONSTRUCTION SPECIFICATIONS (PART 1 - ROADS, Second Edition 2020) - page 8

Beads, lath, and accessories shall be properly fixed and accurately located before applying plaster.
Any which are rusted, improperly set, or otherwise defective shall be replaced prior to plaster work.

Additional specifications, as shown in Table 7-44, shall be referenced as applicable to the plaster
work at hand

Table 7-44: Reference specifications for plaster works

Description

Specification

Waterproof building papers

BS EN 1521

Code of practice for external rendering

BS EN 13914-1

Code of practice for internal plastering

PD CEN/TR 15123

BS EN 13914-2

BS 8481

Specification for hydrated lime for masonry

ASTM C207

Test methods for preconstruction and
construction evaluation of mortars for plain
and reinforced unit masonry

ASTM C780

Contractor shall sequence plaster application with installation and protection of other work so that
neither will be damaged by installation of other.

Plaster bases and substrates to receive direct application of plaster shall be cleaned and any loose
material or substances that may impair the work removed. Projections and concrete fins shall be cut
flush to the surface. Efflorescence, laitance, dirt and other loose material shall be removed by
thoroughly dry brushing. All traces of mould oil, paint, grease, dirt and other materials incompatible
with coating shall be removed by scrubbing with water containing detergent and washing off with
plenty of clean water.

Ferrous surfaces shall be treated with rust-inhibitive paint where plaster will be in direct contact.

Concrete surfaces shall be roughened thoroughly and evenly to a depth of 3 mm by sand blasting,
bush hammering, or abrasive blasting. Surfaces shall be cleaned by washing and brushing.
Roughened, or hacked, concrete masonry backgrounds shall be wetted immediately before applying
coatings.

Plaster materials, composition, and mixes shall be applied in accordance with ASTM C926.
Excessive water shall not be used to mix and apply plaster materials.

Plaster shall be installed with a finished surface to a true plane to correct line and level, with all
angles and corners to a right angle unless otherwise specified and with walls and reveals plumb and
square. Deviations from a plane surface shall be not more than ±3 mm in 3 m from a true plane in
finished plaster surfaces, as measured by a 3-m straightedge placed at any location on surface.

Plaster shall be installed flush with metal frames and other built-in metal items or accessories that
act as a plaster ground, unless otherwise indicated. Where interior plaster is not terminated at metal
frame by casing beads, the Contractor shall cut base coat free from metal frame before plaster sets
and groove finish coat at junctures with metal.

Internal corners and angles shall be square. External corners shall be finished flush with corner
beads on interior work, square and true with plaster faces on exterior work.

Curved surfaces, splayed surfaces and other irregular surfaces shall be true to profile and checked
with accurate metal forms and templates.

At frames, the Contractor shall bring plaster out flush with wood and metal frames and grounds and
finish each coat with a small, neat V joint where plaster finishes against frames.

At vertical surfaces, plaster shall extend full height from floor to 100 mm above the soffit of
ceiling/structural soffit, unless otherwise indicated.

On a suspended ceiling, plaster shall be finished flush with system bead or angle, or 75 mm above
ceiling soffit where there is a perimeter bead or angle.

Plaster bases and finish coats shall be moist-cured by the Contractor to comply with ASTM C926.

Scratch coats shall be applied with sufficient force and cement slurry (1:1) to form a good key, and
shall be cured for 3 days.

Brown coat shall be applied and then the Contractor shall scratch the surface, cure for 3 days, and
allow to dry for at least 24 hours. Contractor shall adjust suction by wetting immediately before
applying finish coat.

Finish coats and finishes shall be applied with a steel trowel to a smooth, hard finish. Curing shall
consist of a light fog spray of water for 4 days, commencing 12 hours after completion of application.
Contractor shall protect against rapid drying until thoroughly cured. Final coats shall be left to dry for
30 days after the curing period and before proceeding with paint application.

Render plaster finishes shall be applied in accordance with the manufacturer’s recommendations.

Defective  or  damaged  plaster  shall  be  corrected  by  the  Contractor  before  starting  decoration.
Defective work may be cut or raked out, and the Contractor shall moisten backgrounds and fill with
finish coat mixes and finish to match adjacent work.  Contractor shall repair, point, cut, and patch
plaster  around  work  abutting,  setting  into,  or  extending  into  plastered  surfaces,  on  completion  of
such work. Exposed block-work to receive paint finish shall be applied with cement mortar slurry and
rubbed over block-work to fill joints.

Contractor shall cut, patch, replace, repair, and point up plaster, as necessary, to accommodate
other work. Cracks and indented surfaces shall be repaired and the Contractor shall point-up finish
plaster surfaces around items that are built into or penetrate plaster surfaces. Contractor shall repair
or replace work to eliminate blisters, buckles, check cracking, dry outs, efflorescence, excessive
pinholes, and as necessary to comply with required visual effects.

Temporary covering and other provisions made to minimise spattering of plaster on other work shall
be removed when plaster work is complete. Plaster shall be removed promptly from door frames,
windows, and other surfaces not to be plastered. Surfaces stained, marred, or otherwise damaged
during plastering work shall be repaired. When plastering work is completed, the Contractor shall
remove unused materials, containers, equipment, and plaster debris.

Final protection shall be provided by the Contractor and conditions shall be maintained in a manner
acceptable to manufacturer and installer and that ensure plaster work is without damage or
deterioration at the time of substantial completion.

7.8.3 Integral Colour Plaster

7.8.3.1

Description

This work includes the following:

1. Interior portland cement plasterwork on solid-plaster bases

2. Exterior portland cement plasterwork on solid plaster bases

3. Plaster ceilings

7.8.3.2

General

Contractor shall submit the following to the Engineer for approval:

•

Product data for each type of product indicated

•

Shop drawings showing locations and installation of control and expansion joints, including

drawings, elevations, sections, details of components, and attachments to other work

•

Samples for initial selection for each type of factory-prepared finish coat indicated

•

Samples for verification for each type of factory-prepared coloured textured finish coat

indicated. Samples shall measure 300 mm by 300 mm and be prepared on rigid backing

For portland cement plaster assemblies with fire-resistance ratings, the Contractor shall provide
materials and construction identical to those tested in assembly indicated according to ASTM E119
by the independent testing laboratory.

Before plastering, the Contractor shall install test panels measuring at least 9 m

in surface area to

demonstrate aesthetic effects and set quality standards for materials and execution. These test
panels shall include the following:

•

Install mock-ups for each type of finish indicated

•

For interior plasterwork, simulate finished lighting conditions for review of mock-ups

•

Incorporate approved test panels into the completed work if undisturbed at time of substantial

completion. A preinstallation conference shall be held by the Contractor at the worksite

a. Materials

Materials shall be stored by the Contractor inside or under cover and shall be kept dry and protected
against damage from weather, direct sunlight, surface contamination, corrosion, construction traffic,
and other causes.

Contractor shall comply with ASTM C1063 and coordinate depth of trim and accessories with
thicknesses and number of plaster coats required. Accessories and miscellaneous materials shall
meet the requirements of Table 7-45.

Table 7-45: Requirements for accessories for integral colour plaster

Material or accessory

Requirement

Galvanized accessories:

Foundation weep screed

Fabricated from hot-dipped galvanized steel sheet,
ASTM A653M, Z180 zinc coating

Cornerite

Fabricated from metal lath with ASTM A653M,
Z180, hot-dipped galvanized zinc coating

External-corner reinforcement

Fabricated from metal lath with ASTM A653M,
Z180, hot-dipped galvanized zinc coating

Corner-beads

Small nose corner-bead with expanded
flanges

Small nose corner-bead with perforated
flanges

Small nose corner-bead with expanded
flanges

reinforced

perforated

stiffening rib

Bull nose corner-bead, radius 19.1-mm
minimum, with expanded flanges

Fabricated from zinc-coated galvanized steel

Use unless otherwise indicated

Use on curved corners

Use on columns and for finishing masonry corners

Use at locations indicated on Contract plans

Casing beads

Fabricated from zinc-coated galvanized steel
square-edged style; with expanded flanges

4. Follow submittal procedures for shop drawings

d. Samples:

1. Physical examples illustrating materials, equipment, or workmanship

2. Establish standards by which the work will be judged

e. Manuals:

Manufacturer’s written installation, start-up, operating, maintenance and repair instructions

2. Include parts lists, pictures, sketches and diagrams specific to the equipment supplied to

document the manufacturer’s requirements.

1.11.2

Submittal Procedure

The Contractor shall comply with the following submittal procedures:

a. Only the Contractor shall make submissions to the Engineer. All data and correspondence

prepared by subcontractors and suppliers shall be submitted through the Contractor.

b. All submittals shall be in English.

c. Make all corrections and changes to shop drawings and working drawings as required by the

Engineer and resubmit until approved.

d. Review submittals returned by the Engineer.

1. Determine if changes requested by the Engineer will result in extra cost or will affect

progress.

2. Notify Engineer in writing within 5 days of receiving submittal if the Contractor believes

additional costs are incurred, or if progress will be impeded.

3. Failure of the Contractor to notify the Engineer of the extra costs or of progress implications

with the work waives the Contractor Claim for compensation.

e. The Contractor shall review and approve all shop drawings, working drawings, product data,

samples and manuals required by the Contract documents before submission.

1. Review and approval shall be for compliance with the Contract requirements.

2. Approval indicates the Contractor has verified all materials, field measurements, field

construction criteria and similar items.

3. Approval also indicated the Contractor has co-ordinated information contained in submittal

with work requirements of other trades and with the Contract documents.

f. The Contractor reviews and submission to the Engineer shall be such as to not delay the

works.

g. The Contractor shall prepare submittals in such a manner that no more than one resubmittal

is necessary to obtain the Engineer

’s approval. If more than one resubmittal is required, the

Owner reserves the right to deduct the cost of the Engineer

’s time to review all additional

resubmittals (after the first resubmittal) from moneys due to the Contractor.

h. The Contractor shall not deliver materials or equipment to the site and shall not incorporate it

into the work until it has been approved or authorized in writing by the Engineer.

i. Submit shop drawings, working drawings, product data and samples in accordance with the

approved submittal schedule. Allow sufficient time for the Engineer

’s review, approval, and

transmittal back to the Contractor.

j. The Contractor shall detail items not completely described on the Contract plans in accordance

with standard Engineering practice.

1. Adjust dimensions shown on the Contract plans to reflect actual dimensions of equipment

provided.

2. Coordinate dimensions shown on the Contract plans as well as actual equipment

dimensions with measurements of existing, adjacent, incorporated, and completed work to
ensure all components fit into the space available.

3. Verify all dimensions before beginning any work depending on such data.

k. Identify each and every deviation from the Contract documents to the Engineer either on the

shop drawing or in the letter of transmittal.

1. Explain reason for deviation

2. Compare requested deviation with Contract requirement

3. Explain why deviation is equal to or better than Contract requirement

4. The Contractor shall not be relieved of responsibility for executing work in complete

conformance with Contract documents for submittals not identifying deviations, even though
such submittals have been approved

l. Miscellaneous structural items such as catwalks, pipe supports, equipment supports, grating

supports, etc. shall be detailed by the Contractor once associate equipment has been
approved. Such details shall be certified by a registered and qualified field Engineer. Submittal
shall include all applicable calculations.

m. Submit shop drawings, working drawings, product data and samples for related equipment

items and integrated system components at the same time. Partial submissions may be
returned to the Contractor without review.

n. The Contractor shall direct Engineer

’s attention either in writing or on the resubmitted

documents to each and every revision other than those requested by the Engineer on previous
submittals.

o. Do not perform any work until shop drawings have been submitted to and approved by the

Engineer. Shop drawings are not to be prepared after work has started or is complete.

p. All submittals from the Contractor shall include a label or stamp which indicates that the

submittal has been reviewed and approved by the Contractor for conformance to the Contract
requirements. Labels or stamp shall generally conform to the following:

1. SUBMITTAL NO. ______________

2. PROJECT NO. _________________

3. CONTRACTOR: ____________________________________

4. REVIEWED AND APPROVED for conformance with the Contract documents

BY:

_______________________________

DATE:

______________

Signature of the Contractor

5. References:

CONTRACT PLANS NOS._______________________________________

ii.

SPECIFICATION NOS. __________________________________

6. A 10 character submittal identification and numbering system shall be used.

First character shall be either “D”, “S”, or “M” representing shop or working drawing
(D), sample (S), and operation/maintenance manual (M).

ii.

Next five digits shall be the applicable specification section number.

iii.

Next three digits shall be the numbers 001 through 999 to sequentially number each
separate package submitted under each specific specification section number.

ENERAL

iv.

Last character shall be the letter “A” through “Z” indicating whether the submittal is
the first submission (A) or a resubmission (B through Z).

An example of a submittal number is D-4.1.3-008-B which indicates:

a) D - Shop Drawing

b) 4.1.3 - Specification for concrete

c) 008 - Eighth separate submittal under this section.

d) B - Second submission (first resubmittal) of that particular information.

q. Engineer

’s review:

1. Engineer

’s review is for general conformance with the Contract requirements only; all work

is still subject to the detailed requirements of the Contract documents.

2. Engineer

’s review is to help the Contractor by discovering errors and omissions.

3. Engineer

’s review does not relieve the Contractor of the obligation and responsibility to co-

ordinate and plan the details of the works and fulfil the intent and purpose of the Contract.

4. Engineer

’s review shall not relieve the Contractor of the responsibility for accuracy, proper

fit, or proper functioning and performance of the work.

r. Engineer reserves the right to require written confirmation from the Contractor that the

comment

s placed on submittals stamped “Approved as Noted” will actually be implemented.

s. Engineer will make every reasonable effort to process and return each submittal within 14

calendar days after its receipt in the Engineer

’s office. If additional time is needed, the Engineer

will advise the Contractor in writing before the 14 day period has elapsed.

1. Large or multiple submittals may require additional time.

2. The Contractor may prioritize submittals and Engineer will review and return them in the

order of the highest priority.

3. If requested by the Contractor, individual drawings from large submittals with numerous

drawings may be returned as they are reviewed rather than waiting for the entire review to
be completed.

4. Need for resubmissions or delays in obtaining the Engineer

’s review or approval shall not

entitle the Contractor to a time extension for Contract completion.

t. Categories used by the Engineer to evaluate submittals are defined below:

1. Approved:

No discrepancies have been identified

ii.

Approved As Noted

iii.

Submittal is acceptable subject to incorporation of the comments listed

2. Not approved (disapproved)

Submittal is unacceptable for the reasons cited

ii.

Item Incorrect:

a) Submittal is being returned without review

b) Insufficient information has been provided or the submittal does not comply with

the Contract requirements

3. Comments noted:

Submittal is not required by the Contract documents

ii.

Engineer will include it in the project files for information only

4. Revise and resubmit:

Submittal must be revised, corrected and resubmitted to the Engineer.

5. Approval not required: Submittal to the Engineer for the item concerned is not a requirement

of the Contract.

6. Submit specified Item:

Engineer

’s initial review indicates the item or detail submitted is not the specified item;

therefore further review is aborted.

u. Incomplete submittals including those not correctly transmitted, incorrectly titled and identified,

or not bearing the Contractor

’s review and approval stamp may be returned to the Contractor

without review.

v. Minimum copies for Engineer

’s review:

1. One (1) reproducible copies plus three (3) photocopies or blue line prints for each shop

drawing in A3, A1 or A0 size format as appropriate.

2. Three (3) copies of all product data and manuals.

3. Engineer will return one (1) reproducible and one photocopy or blue line print of each shop

drawing and one (1) copies of product data or manuals to the Contractor.

w. Engineer may require additional copies of all submittals by notifying the Contractor in writing

and such additional copies will be at no extra cost.

1.11.3

Product Data Submittals

The Contractor shall comply with the following requirements when submitting product data:

1. Shall be explicit with regard to details of the actual products being furnished

2. Provide sufficient information to for the Engineer

’s approval to determine that the products

submitted conform to the specification requirements including, but not limited to, recent third
party test reports.

3. Submittals with more than one style, size, capacity, etc. of a product on a page shall clearly

indicate which product type is being submitted for approval. Failure to do this shall be cause
for disapproval

4. Present information on A4 size paper whenever possible

5. Include the name of the product manufacturer on all catalogue data

1.11.4

Shop Drawing Submittals

The Contractor shall comply with the following requirements when submitting shop drawings:

a. Provide detailed drawings and written descriptions of both the assembly and all components

b. Drawings shall indicate proposed installation of work as well as materials and equipment being

furnished

c. Information shown on shop drawings shall be complete and sufficient for Engineer to review

for compliance with Contract requirements. Information shall include but not necessarily be
limited to the following:

1. Layout dimensions and component sizes including bases, foundations, anchors, and similar

items

2. Design criteria

3. Materials of construction

4. Component and assembly weights

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