1) DRAWING IS TO BE READ IN CONJUNCTION WITH ALL RELEVANT ARCHITECTS, SERVICES ENGINEERING ANDAPPROVED SUB-CONTRACTORS DRAWINGS AND THE SPECIFICATION. ANY DISCREPANCY SHALL BE BROUGHT TODESIGNER'S NOTICE.

GENERAL NOTES:-

2) ALL DRAWINGS ARE IN mm UNLESS NOTED OTHERWISE.

3) DRAWING IS NOT TO BE SCALED.

4) UNLESS OTHERWISE SPECIFIED CONCRETE CLASSIFICATION AND MIX SHALL BE AS FOLLOWS.

6) ALL CONCRETE SURFACE IN CONTACT WITH GROUND TO BE GIVEN CONCRETE PROTECTION AS PER THESPECIFICATION.

7) THE PROPOSED ARRANGEMENT OF CONSTRUCTION JOINTS ARE SUBJECT TO APPROVAL BY THE CONSULANTUNLESS NOTED OTHERWISE.

8) CEMENT FOR SUB STRUCTURE SHALL BE SULPHATE RESISTING CEMENT. FOR SUPER STRUCTURES, OPC CEMENTUNLESS OTHERWISE SPECIFIED.

9) DISTRIBUTION STEEL NOT CALLED UP ON THE DRAWING SHALL BE T10-200c/c.

10) WHERE REQUIRED BAR BENDING SCHEDULE SHALL BE PREPARED AND SHALL BE SUBMITTED TO THE CLIENT FORRECORD.

11) SITE TOPOGRAPHICAL SURVEY TO BE PROCURED AND FORWARD TO ENGINEER FOR REVIEW.

12) BAR MARKED 'T' TO BE HIGH TENSILE DEFORMED BAR TYPE-2 CONFIRMING TO BS 4449.

13) FABRIC REINFORCEMENT TO BE BS 4483 WITH MIN. LAP OF 300mm IN EACH DIRECTION UNLESS OTHERWISESPECIFIED.

14) APPROVED PC CONCRETE/PLASTIC SPACERS ONLY SHALL BE USED FOR ALL R.C. WORKS.

15) CLEAR COVER TO REINFORCEMENT TO BE AS FOLLWS:

16) ALL INTERFACES TO BE SCRABBLED PRIOR TO CONCRETING.

17) PRIOR TO EXCAVATION, CONTRACTOR SHALL CHECK FOR ANY LIVE ELECTRICAL CABLES IF FOUND SHALL BERELOCATED. ALL EXCAVATIONS ADJACENT TO THE EXISTING FOUNDATIONS SHALL BE DONE CAREFULLY AND ENSURETHAT IT IS NOT DISTURBED.

18) ALL SCAFFOLDING USED DURING CONSTRUCTION SHALL COMPLY WITH RELEVANT BS STANDARDS.

EXPOSURE CONDITION RAFT SLAB / PILE CAP

CAST AGAINST EARTH

ABOVE GROUND

75 mm AT TOP & SIDE

-

Class of Mix Alternative ApplicationClassification

Normal Size ofCoarse aggregate

Minimum paste /aggregate ratio

Required MinimumDensity Kg/m3

Required MinimumWork Test strength *N/mm2

A C45/10

Reinforced concretework for substructure

10 0.65 - 0.70 2400 55

B C45/20

All precast slendersections

20 0.65 - 0.70 2400 55

C C35/20

Mass Concrete andreinforced concreteworks for superstructure.

20 0.65 - 0.70 2400 45

D C20/20Formation

20 N/A 2300 30

E C10/20 and filling 20 N/A 2300 20

Blinding

Lean Concrete

* Required minimum work test cube strength at 28 days after mixing.??????????????????????????????????????????????????????????????????????????????????????????????????????????????

*** The Maximum free water / cement ratio shall be 0.40.

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BEAM

75 mm.

40 mm.

TYPE OF WORK ??????????????

VERTICAL FORMWORK TOCOLUMNS, WALLS AND LARGEBEAMS

SOFFIT FORMWORK TO SLABS

12 HOURS

4 DAYS

06) REMOVAL OF FORMWORK.

SOFFIT FORMWORK TO BEAMSAND PROPS TO SLABS

10 DAYS

PROPS TO BEAMS 14 DAYS

19) STRUCTURAL DRAWINGS SHALL BE READ IN CONJUNCTION WITH ELECTRICAL, MECHANICAL AND ARCHITECTURALDRAWINGS. THE CONDITION OF CONTRACT AND THE SPECIFICATION.

20) ANY DISCREPANCY FOUND IN STRUCTURAL DRAWINGS AGAINST ARCHITECTURAL PLANS, THE STRUCTURALENGINEER MUST BE NOTIFIED FOR APPROPRIATE ACTION.

21) IN THE EVENT OF STRUCTURAL /ARCHITECTURAL DISCREPANCY THE QUANTITY SURVEYOR, ESTIMATOR ANDCONTRACTOR MUST SEEK CLARIFICATION AND OBTAIN N.T.P. (NOTICE TO PROCEED) FROM STRUCTURAL ENGINEERBEFORE PROCEEDING ANY FURTHER.

22) ALL WORKMANSHIP AND MATERIALS SHALL BE IN ACCORDANCE WITH THE SPECIFICATIONS OF THE PROJECT. THERELAVENT BRITISH STANDARD (BS) AND BRITISH STANDARD CODE OF PRACTICE, AND THE PARTICULARSPECIFICATIONS OF THE PROJECT.

23) STRUCTURAL DRAWINGS MAY NOT SHOW THE SIZE LOCATION OF SERVICE PIPES REFERENCE TO THEAPPROPRIATE DRAWINGS SHALL BE DONE.

24) ALL DIMENSIONS ARE IN MILIMETERS(mm). ALL LEVELS ARE IN METERS(m) UNLESS OTHERWISE SPECIFIED. THEDRAWINGS SHALL NOT BE SCALED.

EXCAVATION AND EARTHWORK :-01) ALL EXCAVATIONS ARE TO BE KEPT DRY AT ALL TIMES BY AN APPROVED SYSTEM.

02) EXCAVATION SHALL BE ACCURATELY CUT TO THE LINES AND THE SAFE LEVELS SHOWN ON THE DRAWING, OR TOSUCH DEPTHS AND DIMENSIONS SPECIFIED BY THE DRAWINGS.

03) IF AFTER EXCAVATION OR COMPACTION, THE SURFACE WAS DISTURBED BY ANY MEANS, THE SURFACE SHALL BRRE-EXCAVATED OR RE-COMPACTED.

FORM WORK :-01) ALL FORM WORK SHALL BE SECURELY BRACED, SUPPORTED AND WEDGED SO AS TO RETAIN ITS POSITION,WITHOUT DISPACEMENT OR DEFLECTION DURING THE PLACING AND THE COMPACTION OF THE CONCRETE .

02) ALL FORMS IN CONTACT WITH CONCRETE NOT REQUIRING TENDERING SHALL BE COATED WITH AN APPROVED,NON-STAINING, PROPRIETY RELEASE AGENT, BEFORE REINFORCEMENT IS PLACED.

03) BEFORE ANY CONCRETE IS PLACED, FORMS SHALL BE PROPERLY CLEANED BY WASHING OUT WITH WATERAND/OR PRESSURISED AIR TO REMOVE SAW DUST, SHAVINGS, METAL AND OTHER FOREIGN MATTER.

04) CARE SHALL BE TAKEN WHEN RE - USING THE FRAMEWORK, THAT ITS SURFACE SHALL BE FREE FROM WARPING,TWISTING OR OTHER DEFORMATIONS. THE SURFACE SHALL BE SMOOTH AND CLEAN.

05) FORM WORK SHALL BE REMOVED IN SUCH A MANNER AS NOT TO CAUSE ANY DAMAGE TO THE CONCRETE.

REINFORCEMENT :-01) ALL REINFORCEMENT SHALL BE CLEAN AND FREE FROM MATERIALS THAT MAY CAUSE CORROSION ANDDISINTEGRATION OF THE CONCRETE.

02) SHEETS OF MESH FABRIC SHALL BE FLAT UNLESS SPECIFIED AS BENT AND ANY CURVE OR TWIST MUST BECORRECTED BEFORE FIXING.

03) BARS IN CONTACT SHALL BE FIRMLY SECURED TO EACH OTHER WITH APPROVED BINDING WIRE 16 GAUGE SOFTIRON WIRE FREE FROM RUSH OR OTHER CONTAMINANTS.

04) REINFORCEMENT SHALL BE STORED PROPERLY ON CONSTRUCTED RACKS AT LEASE 150mm ABOVE GROUND ANDSHALL BE PROTECTED WITH PLASTIC SHEETING.

05) STARTER BARS TO COLUMNS AND WALLS SHALL BE SECURELY FIXED TO THE REINFORCEMENT IN THE PARENTCONCRETE, AND ACCURATELY LOCATED TO MAINTAIN THE SPECIFIED COVER.

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CONCRETE :-01) THE CONCRETE SHALL BE PLACED IN ITS FINAL POSITION WITHIN 90 MINUTES OF THE TIME WHEN THE CEMENTWAS FIRST CAME INTO CONTACT WITH WATER OR WETTED AGGREGATES. THE REMIXING AND THE RETEMPERING OFTHE STIFFENED CONCRETE IS NOT PERMITTED.

02) CUTTING AND CHASING OF HARDENED CONCRETE SHALL NOT BE PERMITTED WITHOUT THE CONSULTANTSAPPROVAL.

03) ALL CONCRETE SHALL BE COMPACTED BY USING INTERNAL VIBRATORS.

07) GENERAL LAP / ANCHORAGE UNLESS MENTIONED OTHERWISE = 50 x DIA OF BAR.

08) ALL BEAM REINF. TO BE ANCHORED FOR A MINIMUM LENGTH OF 50 x DIA. OF BAR INTO COL / SUPPORTING BEAMU.N.

100 mm AT BOTTOM

TYPE 1 TANKING SYSTEM:1. ONE COAT OF PRIMER.2. 4MM TORCH APPLIED BITUMINOUS MEMBRANE.3. 50MM PROTECTIVE SCREED ON HORIZONTAL SURFACE. 4. TOP AND VERTICAL SIDES WILL BE PROTECTED BY 6MM PROTECTION BOARD OR EQUIVALENT.

A1

0110244-A3.4-3-2500

AS SHOWN

NASS CONTRACTING

DEVELOPMENT PROJECT 2009 - 2012WATER TRANSMISSION

CONTRACT NO-4618B/2011/3100

JUFFAIR WATER DISTRIBUTION STATIONELEVATED SERVICE RESERVOIR (1MIG)

(4500 CU.M. CAPACITY)GENERAL NOTES