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QUANTITY SURVEYING

the fundamentals of QUANTITY SURVEYING, exploring the Industry

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QUANTITY SURVEYING

  1. 1. CAPE PENINSULA UNIVERSITY OF TECHNOLOGY Summarised by: Lizwi Nyandu 2014 Core Notes
  2. 2. INTRODUCTION TO THE QUANTITY SURVEYING PROFESSIONAL AND THE BUILDING PROCESS.  Quantity Surveyor is a competent person in the building industry who works with all the financial related issues during the construction/civil works, in a nutshell Quantity Surveyors are the CA’s of Engineering.  Quantity Surveyors performs several task throughout the stages of the project. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 2
  3. 3. What Services does the Quantity Surveyor provide?  Prepare the initial budget before the fully detailed architectural drawing is develops to check if the cost will not exceed the budget.  Prepare tender documents for pricing.  Negotiation of tender sum with the “contractors”.  Valuing the construction works that are executed on site.  Assessing insurance claims. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 3
  4. 4.  Thus the QS provide various services during all the stages of building project namely: I. Pre-Tender II. Tender III. Post Tender FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 4
  5. 5. PRE-TENDER STAGE  The QS assists the Client to develop his wish-list into a brief.  An Estimate sum is developed from the architectural sketched drawings.  Note at this stage construction drawings are not yet available thus the will be no accuracy in costing of the Materials. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 5
  6. 6. TENDER STAGE  QS prepares a BOQ from the full detailed plan and gather the tender documentation.  QS valuates the tender to make sure that the tenderer priced correctly and accordingly with the work done on site and hand over to the principal agent. TENDER DOCUMENTATION 1. BOQ 2. Specifications 3. Tender Drawings 4. Tender Form( JBCC Principal Building Agreement Tender Form) FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 6
  7. 7. POST TENDER STAGE Pre- Contract  QS valuates all the tenders which have been submitted to ensure that all contractors have priced accordingly.  QS formulates a tender report and submits to the principal agent and assist the client to make a decision on which contract/tenderer will be suitable for the project.  Lastly the QS prepares a Contract documentation. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 7
  8. 8. Contract Stage  A t this stage the QS is responsible for monthly valuations and cost valuations and cost reporting.  Contractor submits a claim to the QS for his work done.  QS value the work and submits a valuation to the principal agent.  Principal agent issue out a certificate for the work confirming the amount due to him.  Contractor raises an invoice to the client based on the amount on the certificate.  Client pays the amount on the invoice and certificate on the terms stated in the contract under the payment terms. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 8
  9. 9. Post contract  QS formulates the final accounts for the Principal Contractor as well as the Nominated and the selected amounts. Finalising the Final accounts involves:  External works are usually measured provisionally, thus at this stage they are included in the BOQ in order to sum up the Total Cost of the project.  The pricing and approval of variations brought about by the site instructions and revised drawings.  Preliminaries Adjustments calculations.  Issuing of the final valuation. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 9
  10. 10. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 10
  11. 11. MODEL & SUPPLIMENTARY PREAMBLES.  The Model Preambles for trade is published and recently by the ASAQS .  This book covers the workmanship and materials encountered in various Projects.  “By its very nature, this document is a “model” document and one is designed to act as a basis upon which to build. It is anticipated that it will be supplemented by a “supplementary preamble”. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 11
  12. 12. PRELIMINARIES 1. What are Preliminaries?  Preliminaries out lines the conditions under which the contract will be administered, and describes all matters which may affect the contractor’s stuff or equipment on the site as well as execution of the works. Namely:  Insurances  Site Offices/accommodation  Water & Electricity Supply….. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 12
  13. 13. STANDARD SYSTEM OF MEASURING BUILDING WORK  It’s a reference book which is used by the contractors & QS’s to reach consensus on a standard.  “Bills of Quantities” are Prepared in accordance with the rules laid down in the “Standard System”.  The Standard System is divided into 25 different TRADES. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 13
  14. 14. Composition and content  The measured works is however arranged accordingly. 1. Works is divided into trades. 2. With a specific trade there's logical arrangements: a. Measured by mass(kg / Tons) b. measured by Volume (m³ ) c. Arranged from the Cheapest to the most Expensive FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 14
  15. 15. Net Measurements  All the Quantities in the BOQ are Whole numbers.  This actually means that all the numbers are rounded of to the nearest number for example:  12.34 » 12  0.08 » 0  Note that the second Quantity is rounded off into zero thus the standard system implies another rule which is called the Fractional Quantities. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 15
  16. 16. Fractional Quantities  This occurs where the final measured quantity is very small.  Using the Above principle will make these small quantities disappear.  thus in these kind of situation the quantities must be rounded off into One decimal as far as the standard system is concerned.  For example:  0.28 » 0.3 FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 16
  17. 17. Provisional Quantities & Provisional Sums  These are the Quantities that are not accurately be determined the Tender Stage thus they are measured during the final stage of the contract.  Provisional sums are amounts of money that are inserted/ included in the BOQ by the QS and intended to cover for specialist subcontractor work. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 17
  18. 18. Prime Cost Amounts & Contingency Sum  P.C. Amounts are included in the BOQ inserted to establish an allowance for the Supply only of a range quality  Contingency Sum can be stated as the monetary amount which covers for any unforeseen works cost. FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 18
  19. 19. THANK YOU GET THE FUNDUMENTAL OF MEASURING.pptx Email: nyandu.nyandu.lizwi@gmail.com Facebook: Lizwi ISO 1900 Nyandu www.cput.ac.za FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT 19

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