PLAIN AND CIVIL: EXAMPLE 2.8.3. ESTIMATING BEAMS BY LINEAR METER METHOD

Saturday 20 July 2019

Estimate the materials needed for the beams and girder as shown. Use class A mixture with 40kg cement bag.

Starting with girders:

$Length_{girder}=2\left ( 25m \right )=50m$

Using the table for 40m x 60m class A.

Cement = 2.160
Sand = 0.120
Gravel = 0.240

   $Cement=2.16\left ( 50m \right )=108 bags$

   $Sand=0.120\left ( 50m \right )=6m^{3}$

   $Gravel=0.240\left ( 50m \right )=12m^{3}$

Next, the beams:

The clear length will be the beam length less half the width the girders.
      $Length_{beams}=5\left [ 10m-2\left ( 0.20m \right ) \right ]=48m$

From the Linear Meter Table, determine coefficients for class A with 25m x 40m.

Cement = 0.900
Sand = 0.050
Gravel = 0.100

   $Cement=0.900\left ( 48m \right )=43.20\simeq 44bags$

   $Sand=0.050\left ( 48m \right )=2.40m^{3}$

   $Gravel=0.100\left ( 48m \right )=4.80m^{3}$

Summarize materials:

$Cement=108+44={\color{Red} \mathbf{152bags}}$

$Sand= 6+2.40=8.40\simeq {\color{Red} \mathbf{8.50m^{3}}}$

$Gravel= 12+4.80=16.80\simeq {\color{Red} \mathbf{17m^{3}}}$

Back to 2.0. Estimating Concrete
2.7. Estimating Concrete Slabs by the Area Method
2.8. Estimating Concrete Columns by Linear Meter Method

PLAIN AND CIVIL

Pages

Saturday 20 July 2019

EXAMPLE 2.8.3. ESTIMATING BEAMS BY LINEAR METER METHOD

1 comment: