+662455-0151
[email protected]
News + Media
Driven by Innovation, Skills and Quality

Hollow Core Load Tables

VC8

VC10

VC12

VC 15

VC 20

VC 25

VC 30

VC40

HOLLOW CORE SLAB 8 CM.

vc-8

 

SECTION PROPERTIES

TOPPING

0 CM.

3 CM.

5 CM.

A (cm.2)

730

L (cm.4)

4874

11289

18010

Yb (cm.)

3.96

5.49

6.51

Yt (cm.)

4.04

5.51

6.49

Zb (cm.3)

1231

2056

2768

Zt (cm.3)

1205

2049

2772

W (kg/m.2)

146

221

269

e (cm.)

1.46

2.99

4.01

bw (cm.)

44.90

44.90

44.90

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

2.6

2.8

3

3.2

3.4

3.6

3.8

4

4.2

4.4

4.6

4.8

5

0 cm.

6-Ø 5mm.

937.61

419

344

283

234

193

158

7-Ø 5mm.

1078.50

500

414

345

288

241

201

168

8-Ø 5mm.

1215.25

584

487

409

345

292

247

209

177

9-Ø 5mm.

1345.95

661

554

467

395

337

287

245

210

179

10-Ø 5mm.

1476.69

736

618

523

445

380

326

280

241

208

178

153

11-Ø 5mm.

1601.56

808

680

577

493

423

364

315

272

235

204

177

152

12-Ø 5mm.

1722.65

879

741

630

539

464

401

347

301

262

228

199

172

13-Ø 5mm.

1840.05

947

800

681

584

503

436

379

330

288

252

220

192

168

14-Ø 5mm.

1953.83

1013

857

731

628

542

470

410

358

314

275

241

212

186

3 cm.

6-Ø 5mm.

1439.41

648

533

440

364

301

249

204

162

7-Ø 5mm.

1653.87

772

645

538

450

379

318

267

211

8-Ø 5mm.

1861.51

898

749

629

530

449

381

322

255

198

9-Ø 5mm.

2062.50

1014

849

716

607

517

442

371

299

237

10-Ø 5mm.

2257.00

1127

946

801

682

583

500

420

343

277

219

11-Ø 5mm.

2445.16

1236

1041

883

754

647

557

469

387

317

256

12-Ø 5mm.

2627.14

1342

1132

962

824

709

612

518

431

357

292

218

13-Ø 5mm.

2803.10

1444

1220

1039

891

768

666

566

475

397

329

269

14-Ø 5mm.

2973.19

1542

1305

1113

956

826

717

615

519

437

365

302

210

5 cm.

6-Ø 5mm.

1809.40

823

679

566

471

392

286

195

7-Ø 5mm.

2085.03

983

821

686

576

477

360

260

8-Ø 5mm.

2353.62

1144

955

804

679

559

433

326

236

9-Ø 5mm.

2615.30

1295

1086

918

780

641

506

392

295

10-Ø 5mm.

2870.22

1443

1214

1029

877

723

579

458

354

265

11-Ø 5mm.

3118.49

1587

1338

1137

972

805

652

523

413

319

12-Ø 5mm.

3360.26

1727

1459

1242

1065

887

725

589

473

372

235

13-Ø 5mm.

3595.66

1864

1577

1345

1155

969

798

654

532

426

335

14-Ø 5mm.

3824.79

1997

1691

1445

1243

1051

871

720

591

480

384

203

 

HOLLOW CORE SLAB 10 CM.

vc-10

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

765

L (cm.4)

8864

26180

Yb (cm.)

4.99

7.83

Yt (cm.)

5.01

7.17

Zb (cm.3)

1778

3345

Zt (cm.3)

1767

3649

W (kg/m.2)

153

279

e (cm.)

2.49

5.33

bw (cm.)

33.40

33.40

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

3

3.25

3.5

3.75

4

4.25

4.5

4.75

5

5.25

5.5

5.75

6

6.25

0 cm.

6-Ø 5mm.

1307.86

439

355

288

234

190

153

8-Ø 5mm.

1707.96

613

503

416

345

288

240

200

166

8-Ø 5mm.

2091.08

785

650

543

457

386

327

278

237

202

171

12-Ø 5mm.

2457.76

944

786

660

559

476

407

349

301

259

223

192

165

14-Ø 5mm.

2808.53

1097

917

773

657

562

483

417

362

314

273

238

207

179

155

16-Ø 5mm.

3143.91

1243

1041

880

750

644

556

482

419

367

321

281

246

216

189

18-Ø 5mm.

3464.42

1383

1160

983

840

723

626

544

476

417

366

323

284

251

221

5 cm.

6-Ø 5mm.

2179.77

715

575

463

373

300

243

185

8-Ø 5mm.

2846.61

1006

822

681

564

467

388

304

219

10-Ø 5mm.

3485.13

1288

1064

885

742

624

526

424

327

244

170

12-Ø 5mm.

4096.26

1555

1291

1081

912

774

659

544

435

341

260

166

14-Ø 5mm.

4680.88

1809

1508

1262

1075

917

786

664

529

438

349

271

156

16-Ø 5mm.

5239.85

2053

1715

1447

1231

1054

907

784

650

535

437

351

277

18-Ø 5mm.

5774.04

2286

1913

1618

1380

1185

1023

888

757

632

525

431

350

279

HOLLOW CORE SLAB 12 CM.

vc-12

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

832

L (cm.4)

14467

37047

Yb (cm.)

5.99

9.04

Yt (cm.)

6.01

7.96

Zb (cm.3)

2414

4096

Zt (cm.3)

2407

4655

W (kg/m.2)

166

294

e (cm.)

3.49

6.54

bw (cm.)

33.40

33.40

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

3

3.25

3.5

3.75

4

4.25

4.5

4.75

5

5.25

5.5

5.75

6

6.25

0 cm.

6-Ø 5mm.

1678.51

590

481

396

326

270

223

183

150

8-Ø 5mm.

2201.60

818

676

563

472

398

336

285

241

204

172

10-Ø 5mm.

2707.23

1042

868

729

618

526

451

387

333

287

248

214

184

158

12-Ø 5mm.

3195.85

1255

1049

886

754

646

557

482

418

364

317

277

242

211

184

14-Ø 5mm.

3667.89

1461

1225

1037

886

762

659

573

500

438

385

338

298

262

231

16-Ø 5mm.

4123.77

1660

1394

1183

1013

874

758

661

580

510

450

397

352

312

277

18-Ø 5mm.

4563.91

1851

1557

1324

1136

981

854

747

656

579

512

454

404

360

321

5 cm.

6-Ø 5mm.

2550.36

864

700

569

464

378

307

247

196

153

8-Ø 5mm.

3340.12

1208

993

822

684

572

478

404

338

281

233

172

10-Ø 5mm.

4101.06

1545

1276

1066

901

763

648

552

470

401

341

268

203

12-Ø 5mm.

4833.97

1864

1553

1305

1105

943

807

694

598

516

445

364

291

226

170

14-Ø 5mm.

5539.64

2171

1814

1531

1302

1115

960

830

720

626

546

460

379

307

244

16-Ø 5mm.

6218.83

2467

2066

1748

1492

1282

1108

962

839

733

642

557

467

388

318

18-Ø 5mm.

6872.29

2752

2309

1957

1674

1442

1249

1088

952

835

735

648

555

469

393

HOLLOW CORE SLAB 15 CM.

vc-15

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

932

L (cm.4)

26029

58045

Yb (cm.)

7.50

10.83

Yt (cm.)

7.50

9.17

Zb (cm.3)

3470

5359

Zt (cm.3)

3470

6329

W (kg/m.2)

186

317

e (cm.)

4.50

7.83

bw (cm.)

33.40

33.40

 

TOPPING

No.of STRAND

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

3

3.5

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

0 cm.

4-Ø 3/8″

4140.25

1650

1172

861

648

496

383

297

231

178

5-Ø 3/8″

5075.02

2058

1471

1090

829

642

504

399

317

252

200

157

6-Ø 3/8″

5972.05

2449

1758

1310

1003

783

621

497

401

324

263

212

170

7-Ø 3/8″

6832.5

2823

2034

1521

1169

918

732

591

481

393

323

265

217

8-Ø 3/8″

7657.5

3183

2298

1723

1329

1048

839

680

557

459

380

316

262

9-Ø 3/8″

8448.16

3527

2551

1917

1482

1172

942

767

630

522

435

364

305

5 cm.

4-Ø 3/8″

5784.89

2255

1586

1156

859

646

487

369

265

161

5-Ø 3/8″

7066.58

2818

2001

1470

1107

847

655

508

386

266

168

6-Ø 3/8″

8287.08

3349

2391

1770

1343

1038

813

641

508

370

259

169

7-Ø 3/8″

9448.60

3855

2763

2054

1568

1221

963

768

615

475

351

249

8-Ø 3/8″

10553.30

4337

3117

2325

1782

1394

1107

888

718

580

442

329

236

9-Ø 3/8″

11603.30

4794

3453

2582

1986

1559

1243

1002

815

667

533

409

307

 

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

932

L (cm.4)

26029

58045

Yb (cm.)

7.50

10.83

Yt (cm.)

7.50

9.17

Zb (cm.3)

3470

5359

Zt (cm.3)

3470

6329

W (kg/m.2)

186

317

e (cm.)

4.50

7.83

bw (cm.)

33.40

33.40

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

3

3.5

4

4.5

5

5.5

6

6.5

7

7.5

8

0 cm.

6-Ø 5mm.

2142.07

775

528

367

257

178

8-Ø 5mm.

2819.24

1070

744

533

388

284

207

149

10-Ø 5mm.

3478.58

1358

955

694

515

387

293

221

165

12-Ø 5mm.

4120.45

1642

1165

856

644

493

380

295

229

176

14-Ø 5mm.

4745.20

1914

1365

1009

765

591

461

363

287

226

176

16-Ø 5mm.

5353.17

2179

1560

1158

883

686

540

429

343

275

220

174

18-Ø 5mm.

5944.69

2437

1749

1303

998

779

617

494

398

322

261

211

5 cm.

6-Ø 5mm.

3013.80

1047

699

473

318

207

8-Ø 5mm.

3957.48

1458

1001

704

500

355

247

165

10-Ø 5mm.

4871.86

1857

1294

928

677

503

370

269

182

12-Ø 5mm.

5757.63

2243

1577

1150

853

642

485

366

262

159

14-Ø 5mm.

6615.47

2621

1856

1360

1020

776

596

459

343

228

16-Ø 5mm.

7446.04

2983

2122

1563

1180

906

704

550

423

298

196

18-Ø 5mm.

8249.99

3333

2379

1760

1336

1033

808

637

504

367

257

165

HOLLOW CORE SLAB 20 CM.

vc-20

 

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

1198

L (cm.4)

58728

111592

Yb (cm.)

10.08

13.55

Yt (cm.)

9.92

11.45

Zb (cm.3)

5828

8324

Zt (cm.3)

5919

97.48

W (kg/m.2)

240

377

e (cm.)

7.08

10.55

bw (cm.)

37.00

37.00

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5

10

10.5

0 cm.

4-Ø 3/8″

6002.02

1268

960

739

575

451

354

278

216

165

5-Ø 3/8″

7399.55

1615

1235

963

761

608

489

394

318

255

203

160

6-Ø 3/8″

8757.61

1948

1498

1176

937

756

615

503

412

338

277

226

182

7-Ø 3/8″

10077.05

2272

1753

1383

1108

900

737

608

504

419

349

290

240

197

160

8-Ø 3/8″

11358.68

2586

2002

1584

1274

1039

856

711

594

498

418

352

295

247

206

9-Ø 3/8″

12603.33

2891

2243

1779

1436

1175

972

811

681

574

486

412

349

296

250

10-Ø 3/8″

13811.79

3123

2477

1968

1592

1306

1084

907

765

648

552

471

402

343

293

2-Ø 1/2″+8-Ø 3/8″

15671.99

3122

2476

2260

1824

1499

1247

1046

885

752

640

544

462

392

332

4-Ø 1/2″+6-Ø 3/8″

17444.79

3122

2476

2476

1985

1670

1397

1170

990

847

725

623

536

462

397

5 cm.

4-Ø 3/8″

7644.69

1558

1165

884

676

517

399

301

222

5-Ø 3/8″

9387.33

1985

1502

1162

906

712

560

440

343

264

181

6-Ø 3/8″

11066.19

2401

1832

1425

1124

894

716

575

461

367

275

188

7-Ø 3/8″

12683.05

2798

2145

1679

1333

1071

866

704

573

466

369

272

189

8-Ø 3/8″

14239.62

3179

2447

1923

1535

1240

1011

829

682

562

462

356

265

187

9-Ø 3/8″

15737.62

3546

2737

2158

1729

1403

1150

949

786

653

543

439

340

255

182

10-Ø 3/8″

17178.71

3783

3015

2384

1916

1560

1284

1064

887

732

588

467

365

277

202

2-Ø 1/2″+8-Ø 3/8″

19370.06

3783

3015

2727

2190

1789

1477

1229

1030

866

712

575

460

361

276

4-Ø 1/2″+6-Ø 3/8″

21426.44

3783

3015

2959

2389

2013

1668

1394

1173

993

842

700

572

462

368

HOLLOW CORE SLAB 25 CM.

vc-20

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

1385

L (cm.4)

104761

183295

Yb (cm.)

12.58

16.33

Yt (cm.)

12.42

13.67

Zb (cm.3)

8327

11222

Zt (cm.3)

8435

13409

W (kg/m.2)

277

419

e (cm.)

9.58

13.33

bw (cm.)

37.00

37.00

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5

10

10.5

11

11.5

12

0 cm.

4-Ø 3/8″

7865.54

1695

1290

1001

787

624

497

396

315

249

194

148

5-Ø 3/8″

9727.47

2156

1655

1297

1032

831

674

550

450

367

299

242

194

153

6-Ø 3/8″

11548.96

2602

2008

1583

1269

1029

843

696

577

479

398

331

273

224

182

7-Ø 3/8″

13330.68

3039

2353

1862

1500

1224

1009

839

701

588

495

417

351

294

246

203

167

8-Ø 3/8″

15073.27

3466

2690

2136

1725

1413

1170

978

822

695

590

501

426

362

308

260

218

182

9-Ø 3/8″

16777.38

3466

2691

2403

1946

1599

1329

1114

941

799

682

584

500

428

363

306

256

213

10-Ø 3/8″

18443.66

3466

2691

2404

2162

1780

1483

1247

1057

902

772

664

570

487

416

355

301

254

2-Ø 1/2″+8-Ø 3/8″

21032.46

3466

2691

2404

2163

1781

1724

1455

1238

1060

911

783

674

581

502

432

372

319

4-Ø 1/2″+6-Ø 3/8″

23528.57

3466

2691

2404

2163

1781

1724

1625

1380

1183

1015

880

764

662

574

497

430

371

5 cm.

4-Ø 3/8″

9495.46

1977

1489

1139

881

684

531

410

312

232

165

5-Ø 3/8″

11712.20

2517

1915

1485

1166

924

736

591

471

372

290

221

163

6-Ø 3/8″

13852.33

3041

2326

1825

1449

1162

939

762

620

503

406

325

256

182

7-Ø 3/8″

15928.49

3554

2736

2150

1717

1388

1132

928

764

630

518

425

346

267

190

8-Ø 3/8″

17942.13

4046

3124

2466

1978

1307

1318

1089

904

753

628

523

434

352

267

193

9-Ø 3/8″

19894.65

4046

3368

2772

2231

1819

1499

1245

1040

872

733

609

489

386

298

221

154

10-Ø 3/8″

21787.47

4046

3368

2959

2476

2025

1675

1396

1172

988

836

707

577

466

370

287

214

151

2-Ø 1/2″+8-Ø 3/8″

24695.09

4046

3368

2959

2761

2265

1935

1629

1365

1156

983

839

700

575

465

374

292

221

4-Ø 1/2″+6-Ø 3/8″

27458.93

4046

3368

2959

2761

2558

2127

1840

1555

1324

1132

971

835

701

581

478

388

308

HOLLOW CORE SLAB 30 CM.

vc-30

 

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

1570

L (cm.4)

168163

277945

Yb (cm.)

15.09

19.07

Yt (cm.)

14.91

15.93

Zb (cm.3)

11143

14574

Zt (cm.3)

11279

17448

W (kg/m.2)

314

461

e (cm.)

12.09

16.07

bw (cm.)

37.00

37.00

 

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5

10

10.5

11

11.5

12

0 cm.

4-Ø 3/8″

9729.84

2121

1621

1263

998

796

640

515

415

333

265

207

159

5-Ø 3/8″

12056.91

2692

2071

1628

1299

1050

856

701

577

475

391

320

260

209

165

6-Ø 3/8″

14342.92

3257

2519

1991

1600

1303

1072

889

741

620

519

435

364

303

251

206

166

7-Ø 3/8″

16588.42

3807

2954

2343

1891

1548

1281

1069

897

757

641

544

462

391

331

279

233

193

8-Ø 3/8″

18793.95

4347

3381

2689

2177

1788

1485

1245

1051

893

761

651

558

478

409

350

298

253

9-Ø 3/8″

20960.04

4348

3632

2893

2346

2024

1686

1418

1202

1026

879

756

652

563

486

419

357

302

10-Ø 3/8″

23087.22

4348

3632

3226

2621

2161

1884

1589

1315

1156

994

859

744

646

556

477

411

352

2-Ø 1/2″+8-Ø 3/8″

26410.95

4348

3632

3226

2946

2523

2112

1840

1569

1346

1161

1006

875

759

657

570

493

426

4-Ø 1/2″+6-Ø 3/8″

29638.55

4348

3632

3226

2946

2523

2321

2030

1794

1544

1336

1158

1005

875

763

666

581

507

5 cm.

4-Ø 3/8″

11369.72

2402

1817

1399

1089

854

671

525

408

312

232

166

5-Ø 3/8″

14039.29

3056

2334

1818

1435

1145

918

739

594

476

323

300

230

170

6-Ø 3/8″

16642.26

3694

2838

2226

1773

1428

1160

952

780

640

523

426

343

272

212

155

7-Ø 3/8″

19179.89

4316

3330

2628

2106

1709

1400

1155

957

795

661

548

453

372

302

239

167

8-Ø 3/8″

21653.42

4927

3809

3012

2427

1979

1630

1353

1129

947

795

668

561

469

390

322

244

175

9-Ø 3/8″

24064.05

4927

4112

3254

2623

2241

1853

1546

1298

1094

926

785

665

558

450

356

275

203

10-Ø 3/8″

26413.01

4927

4112

3626

2927

2398

2071

1734

1461

1238

1053

899

768

652

536

434

346

269

2-Ø 1/2″+8-Ø 3/8″

30045.84

4927

4112

3626

3296

2793

2323

2010

1700

1448

1237

1061

912

785

662

545

449

360

4-Ø 1/2″+6-Ø 3/8″

33528.61

4927

4112

3626

3296

3074

2557

2216

1940

1661

1427

1230

1064

922

798

673

563

466

HOLLOW CORE SLAB 40 CM.

vc-30

SECTION PROPERTIES

TOPPING

0 CM.

5 CM.

A (cm.2)

2318

L (cm.4)

436258

631974

Yb (cm.)

20.01

21.24

Yt (cm.)

19.99

23.76

Zb (cm.3)

21797

29775

Zt (cm.3)

21829

26597

W (kg/m.2)

464

616

e (cm.)

16.49

20.26

bw (cm.)

40.00

40.00

<

TOPPING

No.of WIRE

Mn.

SAFE SUPERIMPOSED SERVICE LOADS (KGS/SQ.M)

(kg-m.)

SIMPLE SPAN IN METER

7.5

8

8.5

9

9.5

10

10.5

11

11.5

12

12.5

13

13.5

14

14.5

15.5

16

0 cm.

4-Ø 1/2″

23403

1223

1025

861

724

608

509

424

350

285

228

178

5-Ø 1/2″

28917

1607

1363

1161

991

848

725

620

528

449

379

317

262

213

170

6-Ø1/2″

34301

1982

1693

1453

1252

1082

936

811

703

608

525

452

387

329

277

231

151

7-Ø 1/2″

39557

2349

2015

1738

1506

1310

1142

998

873

764

668

584

509

442

383

329

237

197

8-Ø 1/2″

44688

2707

2329

2017

1755

1533

1344

1181

1039

916

808

713

628

553

485

425

321

276

9-Ø1/2″

46364

2707

2329

2043

1781

1559

1370

1207

1066

943

834

739

654

579

512

425

321

276

10-Ø 1/2″

50534

2707

2329

2043

1781

1559

1370

1207

1066

943

834

739

654

579

512

425

321

276

11-Ø 1/2″

54529

2707

2329

2043

1781

1559

1370

1207

1066

943

834

739

654

579

512

425

321

276

12-Ø 1/2″

85355

2707

2329

2043

1781

1559

1370

1207

1066

943

834

739

654

579

512

425

321

276

Shear Controll

2390

2206

2046

1903

1777

1663

1561

1469

1384

1307

1236

5 cm.

4-Ø 1/2″

26041

1308

1088

906

753

624

514

419

336

264

201

146

97

53

5-Ø 1/2″

32003

1723

1453

1229

1042

883

747

631

530

441

364

296

235

181

133

89

6-Ø 1/2″

37758

2125

1806

1542

1133

973

835

716

612

521

440

368

305

248

197

109

71

7-Ø 1/2″

2512

2146

1843

1589

1374

1191

1033

896

777

672

579

497

424

359

300

199

156

8-Ø 1/2″

48664

2847

2474

2134

1848

1607

1401

1223

1069

935

818

622

539

466

400

287

238

9-Ø 1/2″

53827

3200

2770

2400

2097

1831

1603

1407

1088

958

843

741

651

569

496

371

317

10-Ø 1/2″

588041

3540

3058

2656

2318

2034

1798

1584

1398

1236

1094

968

857

758

669

589

452

393

11-Ø 1/2″

63599

3868

3340

2896

2525

2230

1966

1735

1554

1378

1224

1088

968

861

765

679

530

467

12-Ø 1/2″

68217

4186

3618

3145

2755

2425

2142

1895

1688

1515

1350

1204

1075

960

857

765

606

537

Safe Superimposed Service Loads

is the capacity of the slab to bear the safe superimposed live load in addition to loads from self dead load of the slab and topping concrete. The figures shown in the load table are based on the capacity of the slab governed by flexural strength. Figures in shaded areas require additional shear strength from the standard product. Should you required specific loads in the shaded area, please consult VCON.
The criteria to determine and design are based on ACI Building Code Requirements for Reinforced Concrete (ACI 318-05)

Concrete

Hollow core slab
Cylinder strength at transfer, f’ci = 250 kg/cm2 Cylinder strength at 28 days, f’c = 400 kg/cm2

Topping concrete
Cylinder strength at 28 days, f’ct = 240 kg/cm2

Strand/ Wire
Strand: ASTM A416-88b (Grade 270), BS 5896: 1980 (7 wire super)
Wire: ASTM A421-80, BS 5896: 1980