mrslab.doc

8/14/2019 mrslab.DOC

1/16

TABLE 1.5

MOMENT OF RESISTANCE AND AREA OF STEEL FOR SLABFy 415

Over

allslab

thickness

M20 M25 M30 M35 M40Mr Ast Mr Ast Mr Ast Mr Ast Mr Ast

100 17.66 763 14.58 775 10.35 716 -- --- -- ---

110 22.36 859 19.41 895 14.90 859 14.61 918 -- --

115 24.91 907 22.08 954 17.49 930 17.39 1002 -- ---

120 27.60 954 24.93 1014 20.29 1002 20.41 1085 8.83 763

125 30.43 1002 27.95 1073 23.29 1073 23.67 1169 11.18 859

130 33.40 1050 31.14 1133 26.50 1145 27.17 1252 13.80 954

140 39.74 1145 38.04 1252 33.53 1288 34.90 1419 19.87 1145

150 46.64 1240 45.63 1372 41.40 1431 43.59 1586 27.05 1336

160 49.56 1279 53.05 1479 49.19 1560 52.24 1737 34.45 1508

170 57.23 1374 61.95 1598 56.66 1703 62.77 1904 43.72 1699

180 65.46 1469 71.54 1718 68.89 1846 74.27 2071 54.10 1889

190 74.23 1565 81.82 1837 79.99 1990 86.73 2238 65.58 2080

200 83.56 1660 92.79 1956 91.91 2133 100.15 2405 78.17 2271

210 91.42 1737 102.06 2052 102.05 2247 111.59 2538 89.03 2424

220 101.74 1832 114.28 2171 115.46 2390 126.76 2705 103.60 2615

230 112.62 1947 127.18 2290 129.70 2533 142.89 2872 119.28 2805

240 124.05 2023 140.77 2409 144.77 2677 159.99 3039 136.06 2996

250 136.02 2118 155.06 2529 160.67 2820 178.05 3206 153.95 3187

NOT!-

1. The c"ver #"r vari"$s e%&"s$res are ass$'e( as &er cla$se "# )*456-2000.

2. +"r arrivin, the e##ective c"ver 10 '' (ia is ass$'e( #"r 100 t"150 ''

thickness 12 '' (ia is ass$'e( #"r 160 t" 200 '' thickness an( 16 ''(ia is ass$'e( #"r "ver 200 '' thickness "# slab.

3. The '"'ent "# resistance is calc$late( $sin, the #"r'$la Mr0.138 #ck b (2/here #ckcharacteristic stren,th "# c"ncrete

b1000 ''( ##ective (e&th "# slab Overall slab thickness- clear c"ver12 (ia. O# 'ain bar

4. The val$e "# Ast is calc$late( $sin, the #"r'$la

Ast&0b ( #ck#. +"r T* +e 415 &00.198.


2/16

`

TABLE 1.6

SINGLY REINFORCED RECTANGULAR SECTIONS REINFORCEMENTPERCENTAGE Pt

M$b(2 M20 M25 M30 M35 M400.30 0.085 0.084 0.084 0.084 0.084

0.32 0.090 0.090 0.090 0.090 0.090

0.34 0.096 0.096 0.095 0.096 0.095

0.36 0.102 0.101 0.101 0.101 0.101

0.38 0.108 0.107 0.107 0.107 0.106

0.40 0.113 0.113 0.113 0.112 0.112

0.42 0.119 0.119 0.118 0.118 0.118

0.44 0.125 0.124 0.124 0.124 0.124

0.46 0.131 0.130 0.130 0.129 0.129

0.48 0.137 0.136 0.135 0.135 0.1350.50 0.143 0.142 0.141 0.141 0.141

0.52 0.149 0.148 0.147 0.147 0.146

0.54 0.155 0.153 0.153 0.152 0.152

0.56 0.160 0.159 0.159 0.158 0.158

0.58 0.166 0.165 0.164 0.164 0.164

0.60 0.172 0.171 0.170 0.170 0.169

0.62 0.178 0.177 0.176 0.175 0.175

0.64 0.184 0.183 0.182 0.181 0.181

0.66 0.190 0.189 0.188 0.187 0.186

0.68 0.196 0.195 0.194 0.193 0.192

0.70 0.202 0.201 0.199 0.199 0.1980.72 0.208 0.205 0.205 0.204 0.204

0.74 0.215 0.212 0.211 0.210 0.210

0.76 0.221 0.218 0.217 0.216 0.215

0.78 0.227 0.224 0.223 0.222 0.221

0.80 0.233 0.230 0.229 0.228 0.227

0.82 0.239 0.236 0.235 0.234 0.233

0.84 0.245 0.242 0.241 0.239 0.239

0.86 0.251 0.248 0.247 0.245 0.244

0.88 0.257 0.254 0.253 0.251 0.250

0.90 0.264 0.261 0.259 0.257 0.256


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TABLE 1.6


M$b(2 M20 M25 M30 M35 M40

0.92 0.270 0.267 0.264 0.263 0.2620.94 0.276 0.273 0.270 0.269 0.268

0.96 0.282 0.279 0.276 0.275 0.274

0.98 0.289 0.285 0.282 0.281 0.280

1.00 0.296 0.291 0.288 0.287 0.285

1.02 0.301 0.297 0.295 0.293 0.291

1.04 0.308 0.303 0.301 0.299 0.297

1.06 0.314 0.309 0.307 0.305 0.303

1.08 0.320 0.318 0.313 0.311 0.309

1.10 0.327 0.322 0.319 0.317 0.315

1.12 0.333 0.328 0.325 0.323 0.321

1.14 0.340 0.334 0.331 0.329 0.3271.16 0.346 0.341 0.337 0.335 0.333

1.18 0.353 0.347 0.343 0.341 0.339

1.20 0.359 0.353 0.349 0.347 0.345

1.22 0.366 0.359 0.355 0.353 0.351

1.24 0.372 0.366 0.362 0.359 0.357

1.26 0.379 0.372 0.368 0.365 0.363

1.28 0.385 0.378 0.374 0.371 0.369

1.30 0.392 0.385 0.380 0.377 0.375

1.32 0.399 0.391 0.386 0.383 0.381

1.34 0.405 0.397 0.392 0.389 0.387

1.36 0.412 0.404 0.399 0.395 0.3931.38 0.419 0.410 0.405 0.401 0.399

1.40 0.425 0.417 0.411 0.407 0.405

1.42 0.432 0.423 0.417 0.414 0.411

1.44 0.439 0.429 0.424 0.420 0.417

1.46 0.446 0.436 0.430 0.426 0.423

1.48 0.452 0.442 0.436 0.432 0.429

1.50 0.459 0.449 0.443 0.438 0.435

1.52 0.466 0.455 0.449 0.444 0.441

1.54 0.473 0.462 0.455 0.451 0.447

1.56 0.480 0.469 0.462 0.457 0.453

1.58 0.487 0.475 0.468 0.463 0.4601.60 0.494 0.482 0.474 0.469 0.466

1.62 0.501 0.488 0.481 0.476 0.472


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TABLE 1.6


M$b(2 M20 M25 M30 M35 M401.64 0.508 0.495 0.487 0.482 0.478

1.66 0.515 0.502 0.493 0.488 0.4841.68 0.522 0.508 0.500 0.494 0.490

1.70 0.529 0.515 0.506 0.501 0.497

1.72 0.536 0.522 0.513 0.507 0.503

1.74 0.543 0.528 0.519 0.513 0.509

1.76 0.550 0.535 0.526 0.519 0.515

1.78 0.557 0.542 0.532 0.526 0.521

1.80 0.565 0.548 0.539 0.532 0.527

1.82 0.572 0.555 0.545 0.538 0.534

1.84 0.579 0.562 0.552 0.545 0.540

1.86 0.587 0.569 0.558 0.551 0.546

1.88 0.594 0.576 0.565 0.558 0.5521.90 0.601 0.583 0.571 0.564 0.559

1.92 0.609 0.589 0.578 0.570 0.565

1.94 0.616 0.596 0.585 0.577 0.571

1.96 0.624 0.603 0.591 0.583 0.578

1.98 0.631 0.610 0.598 0.590 0.584

2.00 0.639 0.617 0.604 0.596 0.590

2.02 0.646 0.624 0.611 0.603 0.596

2.04 0.654 0.631 0.618 0.609 0.603

2.06 0.651 0.638 0.625 0.615 0.609

2.08 0.669 0.645 0.631 0.622 0.615

2.10 0.677 0.652 0.638 0.628 0.6222.12 0.684 0.659 0.645 0.635 0.628

2.14 0.692 0.666 0.651 0.642 0.635

2.16 0.700 0.674 0.658 0.648 0.641

2.18 0.708 0.681 0.665 0.655 0.647

2.20 0.716 0.688 0.672 0.661 0.654

2.22 0.723 0.695 0.679 0.668 0.660

2.24 0.731 0.702 0.685 0.674 0.667

2.26 0.739 0.710 0.692 0.681 0.673

2.28 0.747 0.717 0.699 0.688 0.679

2.30 0.755 0.724 0.706 0.694 0.686

2.32 0.764 0.731 0.713 0.701 0.6922.34 0.772 0.739 0.720 0.707 0.699


5/16

TABLE 1.6


M$b(2 M20 M25 M30 M35 M402.36 0.780 0.746 0.727 0.714 0.705

2.38 0.788 0.753 0.734 0.721 0.7122.40 0.796 0.761 0.741 0.727 0.718

2.42 0.805 0.768 0.748 0.734 0.725

2.44 0.813 0.776 0.755 0.741 0.731

2.46 0.821 0.783 0.762 0.748 0.738

2.48 0.830 0.791 0.769 0.754 0.744

2.50 0.838 0.796 0.776 0.761 0.751

2.52 0.847 0.806 0.783 0.768 0.758

2.54 0.855 0.813 0.790 0.775 0.764

2.56 0.864 0.821 0.797 0.781 0.771

2.58 0.873 0.829 0.804 0.788 0.777

2.60 0.861 0.836 0.811 0.795 0.7842.62 0.890 0.844 0.818 0.802 0.791

2.64 0.899 0.852 0.825 0.809 0.797

2.66 0.908 0.859 0.833 0.816 0.804

2.68 0.917 0.867 0.840 0.822 0.810

2.70 0.926 0.875 0.847 0.829 0.817

2.72 0.935 0.883 0.854 0.836 0.824

2.74 0.944 0.891 0.862 0.843 0.831

2.76 0.953 0.898 0.869 0.850 0.837

2.78 -- 0.906 0.876 0.857 0.844

2.80 -- 0.914 0.883 0.864 0.851

2.82 -- 0.922 0.891 0.871 0.8572.84 -- 0.930 0.898 0.878 0.864

2.86 -- 0.938 0.906 0.885 0.871

2.88 -- 0.946 0.913 0.892 0.878

2.90 -- 0.954 0.920 0.899 0.884

2.92 -- 0.963 0.928 0.906 0.891

2.94 -- 0.971 0.935 0.913 0.898

2.96 -- 0.979 0.943 0.920 0.905

2.98 -- 0.987 0.950 0.927 0.912

3.00 -- 0.995 0.958 0.934 0.919

3.02 -- 1.004 0.965 0.942 0.925

3.04 -- 1.012 0.973 0.949 0.9323.06 -- 1.020 0.981 0.956 0.939

TABLE 1.6


6/16


M$b(2 M20 M25 M30 M35 M403.08 -- 1.029 0.988 0.963 0.946

3.10 -- 1.037 0.996 0.970 0.953

3.12 -- 1.046 1.003 0.977 0.960

3.14 -- 1.054 1.011 0.985 0.9673.16 -- 1.063 1.019 0.992 0.974

3.18 -- 1.071 1.027 0.999 0.981

3.20 -- 1.080 1.034 1.006 0.988

3.22 -- 1.089 1.042 1.014 0.995

3.24 -- 1.097 1.050 1.021 1.002

3.26 -- 1.106 1.058 1.028 1.009

3.28 -- 1.115 1.066 1.036 1.016

3.30 -- 1.124 1.073 1.043 1.023

3.32 -- 1.132 1.081 1.050 1.030

3.34 -- 1.141 1.089 1.058 1.037

3.36 -- 1.150 1.097 1.065 1.0443.38 -- 1.159 1.105 1.073 1.051

3.40 -- 1.168 1.113 1.080 1.058

3.42 -- 1.177 1.121 1.087 1.065

3.44 -- 1.186 1.129 1.095 1.072

3.46 -- 1.196 1.137 1.102 1.079

3.48 -- -- 1.145 1.110 1.086

3.50 -- -- 1.153 1.117 1.094

3.52 -- -- 1.162 1.125 1.101

3.54 -- -- 1.170 1.133 1.108

3.56 -- -- 1.178 1.140 1.115

3.58 -- -- 1.188 1.148 1.1223.60 -- -- 1.194 1.155 1.130

3.62 -- -- 1.203 1.163 1.137

3.64 -- -- 1.211 1.171 1.144

3.66 -- -- 1.219 1.178 1.151

3.68 -- -- 1.228 1.186 1.159

3.70 -- -- 1.236 1.194 1.166

3.72 -- -- 1.245 1.201 1.173

3.74 -- -- 1.253 1.209 1.181

3.76 -- -- 1.262 1.217 1.188

3.78 -- -- 1.270 1.225 1.195

3.80 -- -- 1.279 1.233 1.2033.82 -- -- 1.287 1.240 1.210


7/16

TABLE 1.6


M$b(2

M20 M25 M30 M35 M40

3.84 -- -- 1.296 1.248 1.217

3.86 -- -- 1.305 1.256 1.225

3.88 -- -- 1.313 1.264 1.232

3.90 -- -- 1.322 1.272 1.240

3.92 -- -- 1.331 1.280 1.247

3.94 -- -- 1.339 1.288 1.255

3.96 -- -- 1.348 1.296 1.262

3.98 -- -- 1.357 1.304 1.270

4.00 -- -- 1.366 1.312 1.277

4.02 -- -- 1.375 1.320 1.285

4.04 -- -- 1.384 1.328 1.2924.06 -- -- 1.393 1.336 1.300

4.08 -- -- 1.402 1.344 1.307

4.10 -- -- 1.411 1.352 1.315

4.12 -- -- 1.420 1.361 1.323

4.14 -- -- 1.429 1.369 1.330

4.16 -- -- 1.438 1.377 1.338

4.18 -- -- -- 1.385 1.346

4.20 -- -- -- 1.394 1.353

4.22 -- -- -- 1.402 1.361

4.24 -- -- -- 1.410 1.369

4.26 -- -- -- 1.418 1.3774.28 -- -- -- 1.427 1.384

4.30 -- -- -- 1.435 1.392

4.32 -- -- -- 1.444 1.400

4.34 -- -- -- 1.452 1.408

4.36 -- -- -- 1.461 1.416

4.38 -- -- -- 1.469 1.423

4.40 -- -- -- 1.478 1.431

4.42 -- -- -- 1.486 1.439

4.44 -- -- -- 1.495 1.447

4.46 -- -- -- 1.503 1.455

4.48 -- -- -- 1.512 1.4634.50 -- -- -- 1.520 1.471

4.52 -- -- -- 1.529 1.479

4.54 -- -- -- 1.538 1.487

4.56 -- -- -- 1.547 1.495

4.58 -- -- -- 1.555 1.503

4.60 -- -- -- 1.564 1.511

4.66 -- -- -- 1.591 1.535

4.72 -- -- -- 1.618 1.560

4.80 -- -- -- 1.654 1.593

4.86 -- -- -- 1.681 1.618


8/16


9/16


10/16


11/16


12/16

TABLE 1.6

ISOLATED SQUARE FOOTING

SBC OF SOIL : 100 KNM!

CONCRETE : M!0 STEEL : Fy 415 CO"ER : 50MM

"a( inN

+""tin,*ie

in 'etre

:i'ensi"n"# c"l$'ns

secti"ns

:e&th "#

#""tin, in ''

ein#"rce'ent al"n,

Near

;"l$'n#ace

At

#reeen(

*h"rt

(irecti"n

"n,

:irecti"n


13/16

TABLE 1.6




"a( inN

+""tin,*ie

in 'etre

:i'ensi"n"# c"l$'ns

secti"ns

:e&th "#

#""tin, in ''

ein#"rce'ent al"n,

Near

;"l$'n#ace

At

#reeen(

*h"rt

(irecti"n

"n,

:irecti"n


14/16

TABLE 1.6




"a( inN

+""tin,*ie

in 'etre

:i'ensi"n"# c"l$'ns

secti"ns

:e&th "#

#""tin, in ''

ein#"rce'ent al"n,

Near

;"l$'n#ace

At

#reeen(

*h"rt

(irecti"n

"n,

:irecti"n


15/16

TABLE 1.6




"a( inN

+""tin,*ie

in 'etre

:i'ensi"n"# c"l$'ns

secti"ns

:e&th "#

#""tin, in ''

ein#"rce'ent al"n,

Near

;"l$'n#ace

At

#reeen(

*h"rt

(irecti"n

"n,

:irecti"n


16/16

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