Cost Estimating for Masonry Wall of Huron County Ambulance Station

Introduction to Cost Estimating
Measuring Masonry
Name:
Student No.:
Huron County Ambulance Station
 Do a take-off of the 4” Concrete block wall found around the interior perimeter of the Garage Area of the
building. (Area encompassing Rooms 100)
Project
:
Element/Trade:
By: Reference:
Date: Other:
TAKE-OFF LIST
Take-offs are a most used components of any of construction project to determine the estimate cost. Takeoffs can
vary from simple when the building project is small to complex when the size is huge .It is also used to estimate the
construction cost. The cost estimation is determined takeoff is crafted, what the core components of a construction
takeoff are, and what some factors are you should consider when creating takeoff.
Below is a takeoff list of the Concrete block wall around the interior perimeter of the Garage Area of
the building of Huron County Ambulance Station.
QUANTITY TAKE-OFF
The quantity to consider includes;
1. Masonry Units
2. Mortar for Masonry
3. Horizontal Reinforcing
4. Scaffold
5. Miscellaneous Items Associated with Masonry Work
Masonry units
They are manufactured from dry stiff concrete mixtures which are molded and compacted. The common size is
8 by 8by 16 inches .windows and doors are positioned to reduce cuttings .when the vertical layers of the wall
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are separated by a vertical space they must be held together by mortar. Reinforcement helps the walls to carry
load and resist the forces acting it.
Mortar for Masonry
Mortar is a paste used in binding the bricks, blocks and stones in a building and also they are used in decoration
purposes. They include pitch, asphalt and cement
Horizontal Reinforcing
In the horizontal reinforcement the plint beam is used to tie the place between the wall and
foundation and the ring is tied on top to provide more strength
Scaffold
This is a temporary structure used to support materials to aid construction and also they are
used to access heights and areas that is hard to access.
Miscellaneous Items Associated with Masonry Work
These are items used in construction but they are used in small quantities that there costs are
small compared to the other and the amount involved is not included in the main account .They
includes glass panels used in the window , nails ,clippers and some other tools.
Fig 1.Ground floor plan
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Calculation;
Dimensions of the garage;
Length of the garage = 50.50 ft
Width of the garage = 36.25 ft
Perimeter of the interior part of the garage= (50.50x 2) + (36.25x 2) = 101 +72.5 ft =173.5ft
Height of the garage = 14ft
Dimensions of the door =3ft by 7ft
Backfilling = Excavation – volume of all works inside the excavated pit.
Dimension of the brick used=9” by 3” by 4”
Volume of standard brick = 9/12 × 3/12× 4/12 =0.0625ft3
1. Estimating number of bricks
To estimate the number of bricks to be used in the construction the following calculation are considered;
The surface area of the wall.
=Gross surface Area – openings surface area
The surface area of one brick using the standard measures plus ½ of the joint thickness on each side and divide by
the surface area of the brick.
Determine the number of rows and multiply the result above with it .Then add 3% as the ass a wastage.
2. To determine the quantity of mortar
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