Concrete Formwork Svstems - Part 8 pptx

... 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 ... easily forgiven. Once the slip is 8 Vertical Formwork Systems: Crane-Independent Systems 8. 1 Slipforms 8. 2 Self-Raising Formwork System Vertical Formwork Systems: Crane-Independent Sy...

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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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... 10016 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 81 2, CH-4001 Basel, Switzerland tel: 4 4-6 1-2 6 1 -8 482 ; fax: 4 4-6 1-2 6 1 -8 89 6 World Wide ... 2) Includes index. ISBN 0 -8 24 7-0 07 2-4 (alk. paper) 1. Concrete construction Formwork. I. Title. II. Series. TA 382 .44.H36 19 98 624.1 8...

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Ngày tải lên: 08/08/2014, 10:22

... 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. ... are based on 2-ft (0.61-m), 3-ft (0.91-m), 4-ft (1.22-m), and Horizontal Formwork Systems: Hand-Set Systems 37 Exterior plywood is used for sheathing because it is made of water- proof glue...

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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 /16 Lum...

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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 ... 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 specific formwor...

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... and self- raising forms. Formwork systems for vertical concrete work can be classi- fied into two main categories, namely, crane-dependent systems and crane-independent systems. Gang formwork ... brace. Quality An aesthetically pleasing concrete finish is always of prime impor- tance in architectural concrete construction such as walls and col- Vertical Formwork Systems: Crane-Depen...

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... 1230 1050 921 82 5 750 690 7 1725 1410 1200 1050 933 85 0 780 8 1793 1466 1246 1090 972 87 7 80 8 9 186 5 1522 1293 1130 1007 912 83 6 10 1935 15 78 1340 1170 1042 943 86 4 15 2 185 † 185 8 1573 1370 1217 ... psi C p ϭ column stability factor ϭ 1 ϩ 204.2 28 2437.5 2*0 .8 Ϫ √ ΂ 1 ϩ 204.2 28 2437.5 2*0 .8 ΃ 2 Ϫ 204.2 28 2437.5 0 .8 ϭ 0. 082 3 F′ c ϭ F * c (C P ) ϭ 2437.5 ϫ 0. 082...

Ngày tải lên: 08/08/2014, 10:22