Detailed Analysis of Quantity Surveying Methods and Drainage Systems

This report provides a comprehensive analysis of quantity surveying methods, comparing manual and computer-based approaches. It delves into the intricacies of quantity estimation and bill of quantity (BOQ) preparation, highlighting the traditional manual method's reliance on measurements and calculations, and the modern computer software's efficiency and accuracy. The report examines the advantages and disadvantages of both methods, emphasizing the importance of computer software in providing greater control over estimates. Additionally, the report includes a detailed examination of drainage systems, including calculations and specifications, and provides a drainage schedule with pipe diameters and manhole details. It considers the importance of the NRM2 standard and the integration of these elements into a complete quantity surveying framework. The report concludes with a discussion on the efficiency of the design and the factors that influence it, such as excavation, retaining walls, and the cut and fill volume ratio, as well as the methodology of the calculations.

Query Reply Date/ Correspondent
The presence of the file so that
there is proper review of the
layout plan?
The excavation quantities for
all the building elements
Retention works that may
need to be considered?
Calculation methodology of
the excavation plans
The clearance quantity
estimated error and the
regulation standards
Is there the presence of
retaining walls?
The types of foundations that
should be considered in the
design? And the criteria used?
The cut and fill volume ratio?
The presence of services that
may be of immense concern in
the construction?
What are the geotechnical
investigations on the soil?

What criteria make the method
suitable?
What did the reconnaissance
survey indicate about the land
and any restriction or any
regulations?
What is the methodology used
In calculating the depth and
width of the slabs, beams and
columns? Are they efficient in
the design?
What are the criteria used I the
design of the roof system? Are
there any considerations on
the applicability of any
recommended system?
What is the process that has
been used in the establishment
of the utilities and the
drainage systems? Are the
criteria sufficient to ensure
proper removal and
elimination fongreywater and

wastewater?
The methodologies used in the
criteria of any other utilities?
Please specify
Drainage Schedule
Pay Item Unit Quantity
1 mm diameter pipes mm 61
1.5 mm diameter pipes mm 15
RE-MH9 drain runs m 6.5
RE - MH10 drain runs m 22
MH9 -10 drain runs m 3.2
MH10 – 11 drain runs m 13.5
MH11 -12 drain runs m 15
RE - MH12 drain runs m 19
MH9 manhole size nr 0.525
MH10 manhole size nr 0.55
MH11 manhole size nr
1.11
MH12 manhole size nr
0.7
MH9 cover slab nr 0.525

MH10 cover slab nr 0.55
MH11 cover slab nr 1.11
MH12 cover slab nr 0.7
MH9 main channel size nr 1
MH10 main channel size nr
1
MH11 main channel size nr 1.5
MH12 main channel size nr 2