Preparation of bill of quantities using computer methods

Τίτλος

Preparation of bill of quantities using computer methods

Θέμα

Building--Estimates

Bill

Quantity surveyors

Δημιουργός

Ioannou, Christos N.

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1995

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

CED0274

Σύνοψη

DEFINITION
Bill of quantities is the means where by the majority of building work is
described and measured.
It sets out the various items of work in a recognised manner and in a
logical sequence.
TYPES OF BILLS OF QUANTITIES
There are two main types of Bills of Quantities:
1.1. Trade bills.
1.2. Elemental bills.
1.1. TRADE BILLS
Trade bills are divides in sections in accordance with the various trades as
listed in the Standard Methods of Measurement (SMM).
A typical division of a "trade" bill for quantities would be:
1. Preliminaries
2. Excavation and earthwork
3. Concrete Work
4. Brickwork and blockwork
5. Roofing
6. Woodwork
7. Plumbing installations
8. Floor, wall and ceiling finishing
9. Glazing
10. Painting and decorating
11. Drainage
12. Prime cost and provisional sums.
Advantage: The pricing of the Bills of Quantities at tendering stage can
be done very easily.
1.2 ELEMENTAL BILLS
Elemental bills are divided in sections in accordance with the various main
elements of the building e.g.:
Internal Walls
External Walls
Floors
etc.
Disadvantage: Pricing of the Bills at tendering stage is complicated
as the same item of work may appear in different sections of the Bills
(e.g. plastering to walls will appear in the section of the internal walls as
well as in the section of the external walls). Thus there is unnecessary
repetition of the same prices in different sections of the Bills, whilst the full
extent of each item of work, which affects the prices considerably, can
only be known by adding up the quantities for this item that appear in
different sections of the Bills.
Advantage: The location of most items will be apparent by their position
of the Bills of Quantities. This facilitates the administration of the contract
on site (e.g. ordering materials, deciding the required number of
operatives on site, preparing interim valuations etc.).
Trade bills are generally more widely used than elemental bills.