The meaning of extra over by john b molloy, llb hons, bsc hons, fhkis, frics, aciarb managing director, james r knowles hong kong limited when disputes arise and the matter is referred to. Bill of quantities bq has existed and developed over 300 years miliken, 1996. Bills of quantities for standard residential house 2 bedroom. Sometimes, when you are going through a bill, you will encounter an item that has been measured extra over eo, but the estimator does not mention the main item over which the extraover item is measured. The prices specified in the bill of quantities covered procurement, delivery and installation for each item of the bill of quantities, unless otherwise described. Concrete 4 m3 f integrity testing of piles g set up costs for integrity tests item h allow to carry out integrity tests to piles 150 nr load test i allow to load test 1nr pile provisional item cart away arisings. This estimate is based on measurement groups where bill items with the same dimensions in metres or square metres are grouped together. Vat value added tax is charged on the selling price of an article. The advantages of a bill or quantities are as follows. The bills also provide a measure of the extent of work and this allows the work to be priced.
Unless otherwise stated the description of each item shall be deemed to include manufacturing, conveying and delivering, unloading, storing, unpacking, hoisting, setting, fitting and fixing in position, cutting, waste, patterns. What does the measurement term extra over items mean answers. Item b electrical installation qty unit price per unit total electrical installation level 2 room ls1. Notes for guidance on the method of measurement for highway works 1 chapters i, ii and iii chapters i, ii and iii 1 item coverage 1104 item coverages in the mmhw ensure that the contractor knows the items of work to be covered by the rates and prices he inserts against the appropriate items in the bill of quantities. Extra over trench and hole excavations in earth for excavation in 6 dumprock. These bills of quantities shall be treated as an addendum to the solicitation document and where any of the conditions or instructions in these bills of quantities. The estimator then places rates alongside this total quantity arriving at a price for each item in the bill. Chapter 12 quantities, costs, and specifications 12. Excavate in all materials other than rock within the jacked pipes, including cleaning inside the jacked pipes ready for subsequent pipe laying works to s. Civil engineering work civil engineering work encompass a wide range of different types of activities such as mass excavation, embarkment filling, piping schemes, harbor works, roads, canals, tunnels, drains and railway lines etc.
As mentioned by hussein 2009, the bq have been proposed in the year of 1774 by thomas skaife, purposely for pricing tenders. This process known as booking dimensions or takingoff quantities involves the measurer in either reading or scaling dimensions from. To submit samples mounted on sample boards for materials for approval. Draft bill of quantities september 2015 drainage draft. Sales tax is charged on the sale of an item by the government and is added to the bill amount. Preparation of bill of quantities preparation of bill of quantities subdivision of bill of 1 the bill of quantities is to be divided as appropriate into separate quantities levels of identification, in the sequence set down in table 1.
Delivery and installation of preinsulated steel seamless pipes of st. It must be as accurate as possible and should be based on all available engineering and design data. More detailed information than is required by this document may measurement be given to define the precise nature of work or the circumstances under which it is to be carried out. The use of table 1, level 4 subheading is optional dependent on. Use of appropriate automation tools is highly recommended. When taking off for a boq, the term extra over can be used to refer to items that to a certain extent have already. It also ideally details the terms and conditions of the construction or repair contract and itemizes all work to enable a contractor to price the work for which he or she is bidding.
The work included in the item is defined in detail by the rules in the method of measurement. Please itemize required item in the following space provided under each sub header. No description of item unit qty amount in rs in figures in words bill of quantities boq schedule of quantities. Fuvahmulaku jetty bill of quantities item description unit qty rate total bill no. In simple terms, and using the previous example, if you have items in the bills of quantities for pipes 10 metres and extra over for bends 10 no. Extra over piling for breaking out obstructions encountered during the piling installation. Ce 208 quantity surveying ahsanullah university of. Extra over eo extra over eo is a term that is often used when taking off for a bill of quantities boq.
The units of measurement indicated in the bill of quantities are metric units. Concrete or brickwork 3 m3 g integrity testing of piles h set up costs for integrity tests item i allow to carry out integrity tests to piles 240 nr load test j allow to load test 1nr pile item cart away arisings k dispose off site all surplus excavated. Create a spreadsheet for your bill of quantities with columns for the item numbers, descriptions, units of measurement, quantities, rates for each item, labor, and total cost. As mentioned by hussein 2009, the bq have been proposed in the year of 1774 by thomas skaife, purposely for pricing tenders based on designer drawings in order to know the cost of a completed project before the construction projects. Feb 12, 2014 civil engineering work civil engineering work encompass a wide range of different types of activities such as mass excavation, embarkment filling, piping schemes, harbor works, roads, canals, tunnels, drains and railway lines etc. These quantities when collected together into a bill, form a bill of quantities. Taking off is the process of identifying elements of construction works that can be measured and priced. An amount bidded for an item, the extend of which is describe0d in the bill. Nominated subcontractors clause 20 in addition to the provisions of subclause 20. Bills of quantities, importance, functions, construction industry. Importance and functions of bills of quantities in the. Summary of bill of quantities ministry of environment. The bills of quantities are a complete quantification of all. When taking off for a boq, the term extra over can be used to refer to items that to a.
This process known as booking dimensions or takingoff quantities involves the measurer in either reading or scaling dimensions from the drawings. Preliminaries documents clause 2 the bill of quantities is compiled in accordance with the method described in the standard system for measuring small buildings. Extraover items should be listed immediately under the main item over which they are measured. Pdf bill of quantities with 3d views using building. Extra over precast brick catchpit manholes of any type for building in ends of pipes. Approximate quantities method of estimating measurement. General directions and description of work and material given in the technical specification are not necessarily repeated in the bill of quantities.
The quantities may be measured in number, area, volume. The base rate for the pipe has been paid for already. The following abbreviations may appear in the bill of quantities. Method of measurement for highway works contents introduction chapters i, ii and iii item coverage extra over items remove from store and reerectreinstallrelay hard material dayworks testing modification and new materials. Feb 17, 2020 a bill of quantities is a list of the total materials required to complete a construction project. E extra over excavation for excavating in rocksslopes to make up levels irrespective of class 47 cm plunking and strutting f allow for plunking and strutting to uphold the sides of excavations item dewatering g allow for keeping excavated material free from water by either pumping or bailing item disposal. A bill of quantities is a document used in tendering in the construction industry in which materials, parts, and labor and their costs are itemized. Boq shall be read and construed in conjunction with other contract documents. Item description unit of measure quantity of works unit price usd total construction works preparatory works 1. The bill of quantities is compiled in accordance with the.
As described in the bills of quantities where applicable. Introduction bill of quantities bq has existed and developed over 300 years miliken, 1996. E extra over excavation for excavating in rocksslopes to make up levels irrespective of class 47 cm plunking and strutting f allow for plunking and strutting to uphold the sides of excavations item dewatering g allow for keeping excavated material free from water by either pumping or bailing item. Extra over in quantity surveying is used mainly to described additional item for the previous set of description for example. The bills of quantities shall be priced as described in the solicitation documents. The word percent is an abbreviation of the latin phrase per centum which means per hundred or hundredths. Comparing quantities class 8 notes maths chapter 8 learn. Accuracy and completeness are critical factors in all cost estimates. When taking off for a boq, the term extra over can be used to refer to items that to a certain extent have already been measured. Youll need this to get an accurate quote for your construction project. Dislocating existing installations prior to commencement of any of the bridge demolition works. Atkinson december 2000 nature of bills bills of quantities comprise a list of items of work which are briefly described.
Drainage draft bqs externals printed 23092015 page 11. Bill of quantities with 3d views using building information modeling article pdf available in arabian journal for science and engineering 409 april 2015 with 5,962 reads how we measure reads. The work included in the item is defined in detail by. The approximate quantities method of estimating the cost of a construction project is regarded as the best because its more accurate and more reliable than other methods of estimating. Esuk2 web sample 2 02 demolitions 01 demolitions ref description quantity units rate value remove existing picket fence and gates.
Is a term used in a bill of quantities to indicate an extra cost will be incurred for either labour, material or both over an item that has already been measured. Chapter 2 quantity takeoff the quantity takeoff is an important part of the cost estimate. Extra over eo is a term that is often used when taking off for a bill of quantities boq. If the one extra bend is required the additional sum is simply the extra over rate for the bend. A bill of quantities is a list of the total materials required to complete a construction project.
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