PLAIN AND CIVIL: 2.8. ESTIMATING CONCRETE COLUMNS BY LINEAR METER METHOD

Saturday 20 July 2019

2.8. ESTIMATING CONCRETE COLUMNS BY LINEAR METER METHOD

Given the standard cross-sections of columns, beams, or girders, the linear meter method only needs the total length of the member in the structure. Total length will be multiplied to the coefficients presented in the table below.

Notice that the table only comprises of class A and class B. This is because these two provide the usual required strength for beams, girders, or columns.

SIZE	A	B	A	B	SAND	GRAVEL	SIZE	A	B	A	B	SAND	GRAVEL
	(40kg)	(40kg)	(50kg)	(50kg)				(40kg)	(40kg)	(50kg)	(50kg)
cm.	bags	bags	bags	bags	cu.m.	cu.m.	cm.	bags	bags	bags	bags	cu.m.	cu.m.

15 x 20	0.270	0.225	0.210	0.180	0.015	0.030	55 x 60	2.970	2.475	2.310	1.980	0.165	0.330
15 x 25	0.338	0.281	0.263	0.225	0.019	0.038	55 x 70	3.465	2.888	2.695	2.310	0.193	0.386
15 x 30	0.405	0.338	0.315	0.270	0.023	0.045	55 x 80	3.960	3.300	3.080	2.640	0.220	0.440
15 x 35	0.473	0.394	0.369	0.315	0.026	0.053	55 x 90	4.455	3.713	3.465	2.970	0.248	0.495
15 x 40	0.540	0.450	0.420	0.360	0.030	0.060	55 x 100	4.950	4.125	3.850	3.300	0.275	0.550

20 x 20	0.360	0.300	0.280	0.240	0.020	0.040	60 x 60	3.240	2.700	2.520	2.160	0.180	0.360
20 x 25	0.450	0.375	0.350	0.300	0.025	0.050	60 x 70	3.780	3.150	2.940	2.520	0.210	0.420
20 x 30	0.540	0.450	0.420	0.360	0.030	0.060	60 x 80	4.320	3.600	3.360	2.880	0.240	0.480
20 x 35	0.630	0.525	0.490	0.420	0.035	0.070	60 x 90	4.860	4.050	3.780	3.240	0.270	0.540
20 x 40	0.720	0.600	0.560	0.480	0.040	0.080	60 x 100	5.400	4.500	4.200	3.600	0.300	0.600

25 x 25	0.563	0.469	0.438	0.375	0.031	0.063	65 x 60	3.510	2.925	2.730	2.340	0.195	0.390
25 x 30	0.675	0.563	0.525	0.450	0.038	0.075	65 x 70	4.095	3.413	3.185	2.730	0.228	0.455
25 x 35	0.788	0.656	0.613	0.525	0.044	0.088	65 x 80	4.680	3.900	3.640	3.120	0.260	0.520
25 x 40	0.900	0.750	0.700	0.600	0.050	0.100	65 x 90	5.265	4.388	4.095	3.510	0.293	0.585
25 x 45	1.013	0.844	0.788	0.675	0.056	0.113	65 x 100	5.850	4.875	4.550	3.900	0.325	0.650
25 x 50	1.125	0.938	0.875	0.750	0.063	0.125
							70 x 70	4.410	3.675	3.430	2.940	0.245	0.490
30 x 30	0.810	0.675	0.630	0.540	0.045	0.090	70 x 80	5.040	4.200	3.920	3.360	0.280	0.560
30 x 35	0.945	0.788	0.735	0.630	0.053	0.105	70 x 90	5.670	4.725	4.410	3.780	0.315	0.630
30 x 40	1.080	0.900	0.840	0.720	0.060	0.120	70 x 100	6.300	5.250	4.900	4.200	0.350	0.700
30 x 45	1.125	1.013	0.945	0.810	0.068	0.135
30 x 50	1.350	1.125	1.050	0.900	0.075	0.150	75 x 70	4.725	3.938	3.675	3.150	0.263	0.525
							75 x 80	5.400	4.500	4.200	3.600	0.300	0.720
35 x 35	1.103	0.919	0.858	0.735	0.061	0.123	75 x 90	6.075	5.063	4.725	4.050	0.338	0.675
35 x 40	1.260	1.050	0.980	0.840	0.070	0.140	75 x 100	6.750	5.625	5.250	4.500	0.375	0.750
35 x 45	1.418	1.181	1.103	0.945	0.079	0.158
35 x 50	1.575	1.313	1.225	1.050	0.088	0.175	80 x 80	5.760	4.800	4.480	3.840	0.320	0.640
35 x 55	1.890	1.575	1.470	1.260	0.105	0.210	80 x 90	6.480	5.400	5.040	4.320	0.360	0.720
							80 x 100	7.650	6.375	5.950	5.100	0.525	1.050
40 x 40	1.440	1.200	1.120	0.960	0.080	0.160
40 x 45	1.620	1.350	1.260	1.080	0.090	0.180	85 x 80	6.120	5.100	4.760	4.080	0.340	0.680
40 x 50	1.800	1.500	1.400	1.200	0.100	0.200	85 x 90	6.885	5.738	5.355	4.590	0.385	0.765
40 x 55	1.980	1.650	1.540	1.320	0.110	0.220	85 x 100	7.650	6.375	5.950	5.100	0.425	0.850
40 x 60	2.160	1.800	1.680	1.440	0.120	0.240
							90 x 90	7.290	6.075	5.670	4.860	0.405	0.810
45 x 45	1.823	1.519	1.418	1.215	0.101	0.203	90 x 100	8.100	6.750	6.300	5.400	0.450	0.900
45 x 50	2.025	1.688	1.575	1.350	0.113	0.226
45 x 55	2.228	1.856	1.733	1.485	0.124	0.248	95 x 90	7.695	6.413	5.985	5.130	0.428	0.855
45 x 60	2.430	2.025	1.890	1.620	0.135	0.270	95 x 100	8.550	7.125	6.650	5.700	0.475	0.950
							100 x 100	9.000	7.500	7.000	6.000	0.500	1.000
50 x 50	2.250	1.875	1.750	1.500	0.125	0.250
50 x 55	2.475	2.063	1.9925	1.650	0.138	0.275
50 x 60	2.700	2.250	2.100	1.800	0.150	0.300