Concrete Formwork Svstems - Part 6 docx

... con- 6 Vertical Formwork Systems: Crane-Dependent Systems 6. 1 Introduction to Vertical Formwork Systems 6. 2 Conventional Wall/Columns Forming Systems 6. 3 Ganged Forming Systems 6. 4 Jump Forms 166 ... kg). Figure 6. 3 Wall form ties. 1 76 Chapter 6 Figure 6. 8 Jump form second lift. (Courtesy of Patent Scaffolding Co.) Vertical Formwork Systems: Crane-Dependent Systems 16...

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... 7 Deflection l ϭ 1 .69 ΂ EI w ΃ 1/3 From tables we can get: • I ϭ 0.3 96 in. 4 • E ϭ 1 ,60 0,000 psi E′ ϭ E (C t ) ϭ 1 .6 ϫ 10 6 ϫ 1.0 ϭ 1 .6 ϫ 10 6 psi l ϭ 1 .69 ΂ 1 .6 ϫ 10 6 ϫ 0.3 96 680 ΃ 1/3 ϭ 16. 507 in. Hence ... 750 66 4 60 0 550 510 5 1275 1050 900 793 712 65 0 60 0 6 1500 1230 1050 921 825 750 69 0 7 1725 1410 1200 1050 933 850 780 8 1793 1 466 12 46 1090 972 877...

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... Series. TA382.44.H 36 1998 62 4.1′834—dc21 9 8-3 7 262 CIP This book is printed on acid-free paper. Headquarters Marcel Dekker, Inc. 270 Madison Avenue, New York, NY 100 16 tel: 21 2 -6 9 6- 9 000; fax: 21 2 -6 8 5-4 540 Eastern ... Hemisphere Distribution Marcel Dekker AG Hutgasse 4, Postfach 812, CH-4001 Basel, Switzerland tel: 4 4 -6 1-2 6 1-8 482; fax: 4 4 -6 1-2 6...

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... 2 56 Appendix Appendix 257

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... problem 1 Concrete Formwork: An Introduction 1.1 Concrete Construction 1.2 Concrete Formwork 1.3 Formwork Economy and Significance 1.4 An Integrated Concrete/ Formwork Life Cycle 1.5 Formwork Materials Concrete ... construction of a concrete building requires formwork to sup- port the slabs (horizontal formwork) as well as columns and walls (vertical formwork) . The ter...

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... Formwork Systems: Hand-Set Systems 43 5-ft (1.52-m) modules. The 2-ft (0 .61 -m) size modules utilize 19 ϫ 19 in. (482 .6 ϫ 482 .6 mm) domes, with 5-in. (127.0-mm) ribs be- tween them, and the 3-ft. ... 40 12, 14, 16, 18, 20, 22, 24 20, 30 12, 14, 16, 18, 20, 22, 24 5 53 16, 20 — — 6 66 14, 16, 20 — — Horizontal Formwork Systems: Hand-Set Systems 29 Figure 2.1 All-wood conventional...

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... 1-1 /2 1-9 / 16 1-1 /4 1 1-1 /32 3 2-1 /2 2-9 / 16 1-1 /2 1-1 /4 1-9 /32 4 3-1 /2 3-9 / 16 5 4-1 /2 4-5 /8 6 5-1 /2 5-5 /8 7 6- 1 /2 6- 5 /8 8 7-1 /4 7-1 /2 9 8-1 /4 8-1 /2 10 9-1 /4 9-1 /2 11 1 0-1 /4 1 0-1 /2 12 1 1-1 /4 1 1-1 /2 14 ... 1 3-1 /4 1 3-1 /2 16 1 5-1 /4 1 5-1 /2 Dimension 2 1-1 /2 1-9 / 16 2 1-1 /2 1-9...

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... COLUMN-MOUNTED SHORING SYSTEMS Column-mounted shoring system is the term used for formwork pan- els supported by an up-and-down adjustable bracket jack system attached to already-cast concrete ... conventional construc- tion method is to build formwork and place concrete for columns, then strip formwork for concrete columns after 12 to 24 hours. Erection of formwork and placing...

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... accurately select the opti- mum formwork system for the job. 5.1 FACTORS AFFECTING HORIZONTAL FORMWORK SELECTION Selecting the formwork system for cast-in-place reinforced con- crete slabs is a critical ... area One 1.00 10. 76 Two 0 .62 6. 67 Three 0.5 5.38 Four 0.44 4.74 Five 0.4 4.31 Six 0.37 3.98 Seven 0. 36 3.88 Eight 0.35 3.77 Nine 0.33 3.55 Ten 0.32 3.44 In deciding to use a s...

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... jacks. Slipform jacks come in a variety of capacities, 3-ton (2.7-Mg), 6- ton (5.4-Mg), 15-ton (13 . 6- Mg), 20-ton (18.1-Mg), and 22-ton (20.0-Mg). Jacks are placed so they carry approximately the ... of concrete. Honey- combs in concrete are a result of poor vibration effort. Temperature and Concrete Mix Ambient temperature, speed of slipforming raise, and the condi- tions under which...

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