SANBI KIRSTENBOSCH Water Supply To KRC & CBC Building

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SANBI KIRSTENBOSCH – Water Supply to KRC & CBC BuildingPART A: Works SpecificationsPORTION 1: STANDARDISED SPECIFICATIONS2PORTION 2: VARIATIONS AND ADDITIONS TO STANDARDISED SPECIFICATIONS13 - 43Part A: Works Specifications

PORTION 1: STANDARDISED SPECIFICATIONSStandardised Specifications for Civil Engineering ConstructionThe following SANS Standardised Specifications prepared by the South African Bureau of Standards areapplicable:SANS 1200 ASANS 1200 CSANS 1200 DBSANS 1200 GSANS 1200 LSANS 1200 LBSANS 1200 MJSANS 1200 MKSANS 1200 MMGeneralSite ClearanceEarthworks (Pipe Trenches)Concrete WorksMedium-Pressure PipelinesBedding (Pipes)Segmented PavingKerbing and ChannelingAncillary RoadworksThese standardised specifications are available from the South African Bureau of Standards. The Contractor shallobtain copies of these documents at his own cost.The following Particular Project Specifications are applicable and are included in this document:Particular Project Specification PBBrickworkParticular Project Specification PLLWater Harvesting Works2Part A: Works Specifications

PORTION 2: VARIATIONS AND ADDITIONS TO STANDARDISED SPECIFICATIONSThe term ‘Project Specification’ must be replaced by the term ‘Scope of Work’, and the term ‘Schedule ofQuantities’ must be replaced by ‘Bills of Quantities’ wherever they appear in these standardized specificationsInterpretations of and variations to the standardized specifications listed in Portion 1 are as follows:PSAGENERALPSA 2INTERPRETATIONSPSA 2.2APPLICABLE EDITION OF STANDARDSAdd at the beginning of Sub-Clause 2.2: "Unless a specific edition is specified"PSA 2.3DEFINITIONS (Sub-Clause 2.3)Add the following definition at the bottom of the list of definitions under the heading “a) General”:“Commercial source: A source for the supply of materials or services chosen by the Contractorand for which he assumes full responsibility for the quality and supply thereof.Task: A quantified activity or operation.Daily rate: The remuneration of a day’s work, regardless of output and only applicable whenunable to define tasks.Task rate: The remuneration for a completed task.Labour-intensive construction: The economically efficient employment of as great a portion oflabour as is technically feasible to produce as high a standard of construction as demanded bythe specifications and allowed by the funding available; thus the effective substitution of labourfor equipmentPSA 2.8ITEMS IN SCHEDULE OF QUANTITIES (Sub-Clause 2.8)PSA 2.8.1PrincipleIn the fourth line of Sub-Clause 2.8.1 after the word "specification", add "or in the measurementand payment clause of the standard or particular specification or section or project specification".PSA 3MATERIALSPSA 3.1QUALITYWhere there is a standardisation mark programme for any material, all such material suppliedshall bear the official standardisation mark.Alternative materials or equipment proposed by the Contractor shall be tested. The test, as wellas the materials or equipment, shall be approved by the Employers Agent prior to any suchmaterials or equipment being built into the works, and all costs involved in testing shall bedeemed to be included in the rates tendered.PSA 4PLANT (CLAUSE 4)PSA 4.2CONTRACTOR’S OFFICES, STORES AND SERVICESThe Contractor’s site establishment shall also comply with environmental management bestpractice.In the ninth line of clause 4.2 after the word “surface”, add “and subsurface”.3Part A: Works Specifications

PSA 4.3RESTRICTION ON THE USE OF PLANT (New Sub-Clause)The Contractor shall use only hand tools and hand-operated equipment in the construction ofthe portions of the Works, that are required in terms of the project specification to beconstructed using labour-intensive methods.PSA 5CONSTRUCTION (CLAUSE 5)PSA 5.1.1Setting out of the WorksThe setting out of the Works shall be carried out according to the existing boundary lines, roadsand survey station pegs. All dimensions, levels and data necessary for the complete setting outof the Works will be provided on the Drawings. The Contractor shall not scale dimensions fromthe Drawings, but shall request from the Employers Agent any information which is not clearlystated on the Drawings.Add the following to Sub-Clause 5.1.1:Where labour-intensive work is specified, the Contractor shall also be responsible for the settingout of the daily tasks.PSA 5.2WATCHING, BARRICADING AND LIGHTING (Sub-Clause 5.2)Add the following to Sub-Clause 5.2:The contractor shall in addition to comply to the requirements specified in SABS Section D:Earthworks Sub-Clause 5.1.6 and the requirements of C3.4.PSA 5.4PROTECTION OF OVERHEAD AND UNDERGROUND SERVICESAdd the following to Sub-Clause 5.4:(i)Location and ProtectionAll available information relating to known existing services and structures has been included onthe Drawings. Although this information is reflected as accurately as possible, all positions andlevels must be taken as approximate only. At the commencement of the contract the Contractorshall verify the information on the plans.At locations where there is a reasonable possibility of unknown underground services beingpresent, the Contractor shall open trenches across such locations before commencing withexcavations and, if services are found, these shall be plotted and thereafter be considered as'known services'. Alternatively, the Contractor can employ a radio detection service in order tolocate services. All such work is to be carried out only on the instruction of and under the directcontrol of the Employers Agent.All known services shall be adequately protected from damage during construction operations.The requirements of the relevant service departments relating to limits of heavy plant usage,departmental supervision etc., shall be ascertained and adhered to.Any damage to known services shall be made good at the Contractor's expense.No pegs or stakes are to be driven into the ground in the vicinity of the underground services,particularly Electricity or Telkom services.Any services or structures damaged during construction shall immediately be reported to theEmployers Agent, and as soon as possible after such damage a written report stating the exactcircumstances of the occurrence shall be submitted to the Employers Agent.All practical measures shall be taken to effect immediate repairs, either by contacting therelevant authority or, where instructed by the Employers Agent, the Contractor shall performtemporary repairs himself.PSA 5.5SPECIAL WATER CONTROL (Clause 5.5)Add the following:4Part A: Works Specifications

Unless specified, the rates tendered and paid for excavation and the construction of anysubsurface structure shall include for dewatering as may be necessary.PSA 5.5.1Temporary Drainage Works (New Sub-clause)The Contractor shall construct the necessary temporary drainage works such as side drains,catchwater drains, mitre drains, culverts, etc. to deal adequately with any surface run-off.Any suitable prefabricated culverts salvaged from an existing road or an abandoned temporarydeviation may be re-used if in a good condition and approved by the Employers Agent.No separate payment shall be made for the temporary drainage works and the costs shall beincluded in the tender, unless specifically allowed for in the Schedule of Quantities.PSA 5.6POLLUTION (Clause 5.6)Add the following:The Contractor is required to take all necessary precautions, watering where appropriate, toprevent dust blowing from construction material and spoil heaps and/ or ground stripped ofvegetation cover, the cost of which must be included in the tendered rates.PSA 5.7SAFETYAdd the following:The Contractor is to adhere to the requirements pertained in the Occupational Health andSafety Act, the Health and Safety specification and the Contractor’s approved Health and Safetyplan.PSA 5.8GROUND AND ACCESS TO THE WORKSThe Works are to be executed at the Kirstenbosch National Botanical Gardens (NBG),specifically at the Kirstenbosch Research Centre (KRC) and Centre for BiodiversityConservation (CBC) which will remain operational for the duration of the Contract.The Contractor shall liaise with Kirstenbosch Gardens management with regard to access to thesite, time of arriving and leaving and deliveries of materials.PSA 5.10AS BUILT SURVEYS (New Clause)The Contractor shall survey the final position of all buried pipework installed, prior to backfilling.The pipework shall be surveyed and the information submitted to the Employers Agent as thework progresses. No bedding or backfill shall be placed to within 100 mm of the crown of thepipe before the survey information has been approved by the Employers Agent.The pipelines shall be coordinated at centrelines of all bends, specials and fittings andintermediate points at intervals of not more than 20 m.The survey data shall be presented in tabular format giving Y-Coordinate, X-Coordinate,chainage and level. All coordinates and levels shall be referenced to the WGS 84 system andMean Sea Level (MSL). No payment for installed services shall be made until the As-Builtinformation has been provided as detailed above to the satisfaction of the EmployersAgent.PSA 5.11COMPLIANCE TO THE QUALITY CONTROL PROGRAMME (New Clause)Prior to the commencing of the Works, the Contractor is to produce and submit a quality controlprogramme (QCP), and the associated approval forms, to the Employers Agent for acceptance.The QCP is to consist of a list of items, which are to be signed off by both the Contractor andEmployers Agent on Site, to ensure that the Works on Site comply with the specifications.The QCP shall incorporate the requirements of all relevant SANS 1200, project specificationsand other specifications referred to.5Part A: Works Specifications

The accepted QCP will not relieve the Contractor of any quality control and/or testingresponsibilities stated in the relevant specifications.Work must be signed off by both the Contractor and the Employers Agent before it can beprocessed for payment.PSA 8MEASUREMENT AND PAYMENTPSA 8.1METHOD OF MEASUREMENT, ALL SECTIONS (Sub-Clause 8.1.1.)In the second line of Sub-Clause 8.1.1, after the words "standardized specification or" add: "inthe measurement and payment clause of the standard specification or".PSA 8.2PAYMENT (Clause 8.2)In the third and fourth line of Sub-Clause 8.2.2, delete the words “number of months required”and replace with: “number of days required, as determined in the General Conditions ofContract 2010,”Delete Clauses 8.2.1, 8.3 and 8.4 and replace with the following:PSA 8.3.1Fixed established costsThe Contractor shall tender a lump sum in the Schedule of Quantities to cover his fixedestablishment costs. The amount tendered and paid shall be full compensation to theContractor for:i)The establishment of his organisation and equipment on the site, the transfer of allpersonnel, equipment tools, office, ablution and storage facilities to the site, establishmentof water, power and telephone facilities, and the removal of all the above mentioned itemson completion of the Works.ii)Effecting of all insurance’s, indemnities and guarantees required in terms of the Conditionsof Contract or Tender where applicable.iii)Compliance with all other general conditions and requirements that are not specificallymeasured elsewhere for payment in these Contract Documents.Payment shall be effected as follows:i)Seventy-five percent (75%) of the lump sum tendered shall be paid when the Contractor'sstores, offices, etc. are substantially complete, provided that sufficient plant and labour tocommence construction at the programmed rate has arrived at the site of the Contract andis in working order.ii)Twenty-five percent (25%) in the final certificate of completion. The final certificate ofcompletion will only be issued when the Contractor has cleared the entire site to thesatisfaction of the Employers Agent and removed all the plant, offices and stores thatmight have been used for the duration of the Contract and has made available to theEmployers Agent the “As-Built” drawings, as called for in the Scope of Work specifications.Only the tendered amount shall be paid under this item, which in no way shall be affected bymodifications of the Contract Amount.The sum shall allow for fixed establishment on all the sites where work is required interms of the scope of work.ItemUnitFixed establishment costs. Lump SumPSA 8.3.5Contractor’s Obligations with Respect to Health and Safety (New Clause)The Contractor shall tender a lump sum in the Schedule of Quantities to cover his fixed costs forthe proper compliance with the requirements of the Occupational Health and Safety Act, the6Part A: Works Specifications

Construction Regulations 2014 issued in terms of Section 43 of the Occupational Health andSafety Act, 1993 (Act 85 of 1993) and the Health and Safety Specifications in Section C3.6,Annex 6, herein. The amount tendered and paid shall be full compensation for:(i)The drawing up of a detailed Health and Safety Plan in respect of the Works forsubmission to the Employers Agent and Employer prior to the handing over of the Site tothe Contractor.(ii)The execution of all training, precautions, monitoring, liaison, consultation and review asdetailed in the Health and Safety Plan.(iii)Ensuring that all Sub-Contractors comply with the requirements of the Act and the Healthand Safety Plan.(iv) The preparation and maintenance of a Health and Safety File, which is to be submitted tothe Employer upon completion of the Works.(v)Compliance in all other respects with the relevant health and safety legislationsPayment shall be effected as follows:(i)Seventy-five percent (75%) of the lump sum tendered shall be paid when the Contractor’sHealth and Safety Plan has been submitted to the Employers Agent and Employer,provided that the Plan is complete and acceptable in terms of the Regulations.(ii)Twenty-five percent (25%) in the final certificate of completion, once the Health and Safetyfile has been handed over to the Employer.ItemUnitFixed costs with respect to Health and Safety . Lump SumPSA 8.3.7Producing and Submitting the Quality Control Programme (New Clause)The Contractor shall tender a lump sum in the Schedule of Quantities to cover his costs forproducing and submitting the Quality Control Programme, and associated approval forms, to theEmployers Agent for approval prior to the handing over of the Site to the Contractor.Payment will be made for this item only once the QCP has been approved by the EmployersAgent.ItemUnitProducing and submitting the Quality Control Programme . SumPSA 8.4TIME-RELATED ITEMSAdd the following:Adjusted Payment for Time-Related CostsThe payment to the Contractor for time-related costs shall be adjusted in accordance with thefollowing formula in the event of the Employers Agent granting an extension of time in terms ofthe provisions of the Contract:Sum of Tendered amountsfor Time-related ItemsExtended contract period asauthorised by Variation OrderTender contract periodxThe abovementioned adjustment of the payment for Time-Related Items shall be made in theCompletion Payment Certificate and shall be the only payment for additional Time-Related costsirrespective of the actual period required to complete the Contract including its authorisedextensions.The unit of time for this calculation shall be “days” as defined in the General Conditions ofContract.7Part A: Works Specifications

PSA 8.4.1Time-Related EstablishmentThe Contractor shall tender a Lump Sum in the Schedule of Quantities to cover his time-relatedestablishment costs. Other than the items which have been separately scheduled in PSA8.4.2.2, the amount tendered and paid shall be full compensation to the Contractor for:(i)The maintenance of his whole organisation as established for this Contract.(ii)The provision of security personnel if deemed necessary.(iii)The maintenance of all insurances, indemnities and guarantees required in terms of theConditions of Contract or Tender where applicable.(iv) Compliance with all general conditions and requirements, which are not specificallymeasured elsewhere for payment in these Contract Documents.The Contractor shall tender a lump sum for the abovementioned items.Payment of the lump sum shall be made monthly in compliance with method laid down in SubClause 8.2.2 of SABS 1200:A.The sum shall allow for time related establishment on all the sites where work is requiredin terms of the scope of work.ItemUnitTime related establishment costs . Lump SumPSA 8.4.2.2Facilities for the Contractor(a)Search for, record and protect all survey bench marksThe sum tendered shall be deemed to be full compensation for complying with the requirementsof Clause 5.1.2 of SANS 1200 A.(b)Provide Access for Authorised PersonnelThe sum tendered shall be full compensation for providing access to authorised SANBIpersonnel to all parts of the Works and ensuring that the construction activities do not obstructthem in any way for the full duration of the Contract.(c)Nightwatchmen and SecurityThe sum tendered shall be full compensation for providing sufficient nightwatchmen andsecurity to all parts of the Works where necessary.ItemUnit(a) Search for, record and protect all survey bench marks . sum(b) Provide access for authorised personnel. sum(c) Nightwatchmen and Security. sumPSA 8.4.6Contractor’s Obligations with Respect to Health and Safety (New Clause)The Contractor shall tender a lump sum to cover his time related costs with respect to healthand safety. The amount shall cover all of the Contractor’s obligations as described in PSA 8.3.5above.ItemUnitTime related costs with respect to health and safety . Lump SumPSA 8.4.8Compliance with the Quality Control ProgrammeThe Sum shall cover the Contractor’s Time-Related costs of compliance with the Quality ControlProgramme (QCP). The amount tendered shall be paid monthly, in accordance with the methodlaid down in Sub-Clause 8.2.2 of SABS 1200A, to the Contractor in compensation for:8Part A: Works Specifications

(i)The maintenance of the QCP and forms by the Contractor on Site for the duration of thecontract.(ii)Ensuring that all Sub-Contractors comply with the requirements of the QCP.(iii)Ensuring that all necessary SABS and other specifications are available on site at alltimes.The Contractor’s attention is drawn to PSA 5.11 regarding payment for any Work that is to besigned off by both the Contractor and the Employers Agent.ItemUnitCompliance with the Quality Control Programme . SumPSA 8.5PROVISIONAL SUMS (Clause 8.5)PSA 8.5.1Relocation cost of electrical services by local authorityThe item shall cover the costs of relocating any existing electrical service.The Contractor's tendered mark-up must allow for making the necessary arrangements, liaisingwith the relevant authority and/or plant manager, notifying the Employers Agent of anyrelocation of electrical services and for payment, if applicable, through the contract.In addition, the final position of any electrical service that is to be relocated shall be recordedand conveyed to the Employers Agent and shall be deemed to be included in the tenderedmark-up.ItemUnit(a) Cost of relocating existing electrical services by local authority . PC Sum(b) Overheads, charges and profit on a) above . %PSA 8.7DAYWORKSCertai

SANS 1200 A General SANS 1200 C Site Clearance SANS 1200 DB Earthworks (Pipe Trenches) SANS 1200 G Concrete Works SANS 1200 L Medium-Pressure Pipelines SANS 1200 LB Bedding (Pipes) SANS 1200 MJ Segmented Paving SANS 1200 MK Kerbing and Channeling SANS 1200 MM Ancillary Roadworks These standardised specifications are available from the South .

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