DESIGN GUIDE v3 - Girder-Slab®

1 THE GIRDER-SLAB SYSTEMDESIGN GIRDER-SLAB System DESIGN GUIDE 2016 / Copyright 2002 - 2016 by Girder-Slab Technologies, LLCAll rights reserved. This DESIGN GUIDE or any portion thereof, may not be reproduced or used in any manner whatsoever without documented authorization by Girder-Slab Technologies, and D-BEAM are trademarks of Girder-Slab Technologies, LLC and listed on the Principal Register by the United States Patent and Trademark Technologies, LLCPO Box 4126 1256 Marlkress Hill, NJ 08034 888-478-1100 @GIRDERSLABC over Photo: Museum Towers II - Philadelphia, PAThis Page: City Point Tower I - Brooklyn, NYCONTENTS23 // FIRE RESISTANCE INFORMATION //22 // SPECIFICATION GUIDE //18 // TYPICAL SYSTEM DETAILS //04 // INTRODUCTION //05 // THE GIRDER-SLAB SYSTEM //08 // STRUCTURAL DEVELOPMENT //10 // THE D-BEAM GIRDER //12 // D-BEAM GIRDER DIMENSIONS //13 // D-BEAM GIRDER PROPERTIES //14 // D-BEAM GIRDER CUTTING PATTERNS //06 // FRAMING PLAN EXAMPLE //16 // SAMPLE CALCULATIONS // DESIGN GUIDEVERSION // FEATURES & BENEFITS //28 // YOUR PROJECTS //4 // INTRODUCTION //The GIRDER-SLAB system is a structural steel and precast hybrid, the first to use precast hollow core slabs with an integral steel girder to form a monolithic slab assembly.

2 This proven technology has become the standard for achieving low floor-to-floor heights with structural steel in multi-story residential to high-rise residential structures have typically used a cast-in-place reinforced concrete structural system which offers such benefits as low floor-to-floor height and fireproof construction. With similar benefits, low to mid-rise residential buildings often utilize bearing wall systems supporting precast hollow core slabs. These structural systems are time consuming, weather sensitive and labor Technologies, LLC set out to develop an efficient structural steel based framing system that would meet the precise requirements associated with residential superstructures.

3 Utilizing proven materials that have long been used by the construction industry, the GIRDER-SLAB system was invented to bring the advantages of structural steel to multi-story residential buildings, offering a low floor-to-floor height alternative to cast-in-place reinforced GIRDER-SLAB system is designed by the owner's architect and structural engineer in combination with a structural steel frame. The components of the system, structural steel (including the unique D-BEAM girder) and precast prestressed hollow core slabs, can be manufactured and supplied by the builder's customary subcontractors, guaranteeing the owner competitive procurement of the building's FLOOR-TO-FLOOR HEIGHTS WITH STRUCTURAL STEEL// THE GIRDER-SLAB SYSTEM // 5 THE GIRDER-SLAB SYSTEMThe GIRDER-SLAB system consists of an interior steel girder known as an open-web dissymmetric beam (or D-BEAM girder), and precast prestressed hollow core slabs connected by cementitious grout.

4 This lightweight assembly develops composite action enabling the system to carry significant loads. An eight-inch or ten-inch thick precast hollow core slab provides for low floor-to-floor heights, is non-combustible, and the underside of the slab with its smooth form finish is ready-made for ceiling finish. The D-BEAM girder is a fabricated inverted tee assembly contained within the plane of the floor that eliminates issues associated with a standard wide flange beam sitting below the GIRDER-SLAB system is ideal for use in mid to high-rise residential structures such as apartments, condominiums, hotels, student housing and senior living developments. The system is fire rated for use in residential buildings when constructed in accordance with Underwriters Laboratories, Inc.

5 Floor Ceiling DESIGN No. K912, also Certified for cast-in-place concrete structures, the GIRDER-SLAB system uses off site prefabricated components that are quickly erected on site by one trade, ironworkers. The system is low cost, lightweight and offers rapid assembly and // FRAMING PLAN EXAMPLE //Troy Boston - Boston, MADB8 indicates 8 D-BEAM girder sectionindicates 8 precast hollow core slab DB 8DB 8DB 8DB 8DB 8DB 8DB 8W18W12W18DB 8DB 8DB 8DB 8DB 8DB 8W18W21W18DB 8W10W10DB FRAMING PLAN EXAMPLE // 7 STRUCTURAL DEVELOPMENTFULL SIZE TEST ASSEMBLY VILLANOVA UNIVERSITY STRUCTURES LABIn order to solve the floor-to-floor and interference problems, Girder-Slab Technologies, LLC implemented a research and development program.

6 We wanted an interior structural steel girder to be placed within the plane of the precast slab units, thereby producing a thin floor construction (akin to flat-plate) with a minimum floor to ceiling GIRDER-SLAB system and the open web D-BEAM girder technology are the result of more than fifteen years of research and development. Early testing produced an ASD approach for a rational DESIGN of the GIRDER-SLAB order to develop a rational analysis that would maximize the use of the technology, extensive laboratory testing and analysis was undertaken. This included both small-scale specimens and full-scale assemblies in order to simulate actual bays. Each assembly was load tested well above code required residential live loads.

7 The D-BEAM girder performed without failure even at these higher , more sophisticated testing enabled us to develop an LRFD approach to the GIRDER-SLAB system, improving upon the system's previously established structural and economic constructed using the GIRDER-SLAB system can be built as high as any other structural steel building. The D-BEAM girder and the precast hollow core slab support gravity loads. The GIRDER-SLAB system is easily integrated with lateral resisting steel braced frames and concrete or masonry shear GIRDER-SLAB system is available for use by industry professionals. Application and use of the information published by Girder-Slab Technologies, LLC requires DESIGN by a registered professional structural engineer.

8 Fabrication, construction and assembly of the GIRDER-SLAB system and D-BEAM girder shall be in conformance with the GIRDER-SLAB system DESIGN GUIDE AxisSlabGroutSteelTRANSFORMED SECTION8 // STRUCTURAL DEVELOPMENT //// 9 City Point Tower I - Brooklyn, NY10 // THE D-BEAM GIRDER //// THE D-BEAM GIRDER // 11 COMPETITIVE BIDDING THE D-BEAM GIRDERWITH PRACTICALLY AN UNLIMITED SOURCE OF SUPPLY, THE D-BEAM GIRDER IS MANUFACTURED BY YOUR LOCAL STEEL FABRICATORS AS PART OF A COMPLETE STRUCTURAL STEEL PACKAGE. THE D-BEAM GIRDER FABRICATION PROCESS BEGINS WITH A STANDARD WIDE FLANGE SECTION THAT WHEN UNIQUELY CUT THROUGH THE WEB PRODUCES TWO IDENTICAL TEE FABRICATOR THEN WELDS A FLAT BAR TO THE TOP OF THE REMAINING WEB CREATING THE NARROW TOP FLANGE OF THE D-BEAM D-BEAM girders ARE FABRICATED FROM ONE PARENT BEAM WITHOUT Included Weight(lb/ft)AverageArea(in2)Depth(d)(in )ParentBeamSizeWe b Thickness (tw)(in)Flange Thickness (tf)(in)Flange Width (bf)(in) a(in) b(in) w(in) t(in)

9 DB 8 x x 533/89/16102531DB 8 x x 583/85/8101 3/45 1/431DB 8 x x 533/89/161015 1/231 1/2DB 8 x x 583/85/8103/45 3/431 1/2DB 8 x x 791/23/412 1/81 5/85 3/851DB 8 x x 791/23/412 1/81 1/85 5/851 1/4 DB 9 x 5/814 x 613/85/8103 3/85 1/431DB 9 x 3/414 x 687/163/4103 1/25 1/431DB 9 x 5/814 x 613/85/8102 3/85 3/431 1/2DB 9 x 13/1614 x 747/1613/1610 1/83 1/25 5/1631DB 9 x 3/414 x 687/163/4102 1/25 3/431 1/2DB 9 x 13/1614 x 747/1613/1610 1/82 1/25 13/1631 1/2DB 9 x 3/412 x 791/23/412 1/85 1/83 5/851DB 9 x 3/412 x 791/23/412 1/84 1/84 1/851 1/212 // D-BEAM GIRDER DIMENSIONS //D-BEAM GIRDER DIMENSIONS// D-BEAM GIRDER PROPERTIES // 13D-BEAM GIRDER PROPERTIESFy = 50 ksiASD 9TH EDITIONASD 14TH EDITIONLRFD 14TH EDITIOND esignationIx(in4)NAbot DB(in)Sbot(in3)Stop(in3)Qtop bar(in3)PNAbot DB(in)Z(in3)Mallow (kip-ft)Mn/ b (kip-ft) bMn (kip-ft)DB 8 x 8 x 8 x 8 x 8 x 8 x 9 x 9 x 9 x 9 x 9 x 9 x 9 x 9 x 8 x 37DB 8 x 39DB 8 x 42DB 8 x 45DB 8 x 57DB 8 x 618" D-BEAM GIRDER CUTTING PATTERNS14 // D-BEAM GIRDER CUTTING PATTERNS //DB 9 x 41DB 9 x 45DB 9 x 46DB 9 x 48DB 9 x 49DB 9 x 52DB 9 x 57DB 9 x 659" D-BEAM GIRDER CUTTING PATTERNS// D-BEAM GIRDER CUTTING PATTERNS // 15 NOTE.

10 GRAPHICAL REPRESENTATION ONLYThe online D-BEAM girder Calculator Reference Tool is intended for use onlywith assemblies identical to S1, S2 & S3 in the GIRDER-SLAB system DESIGN GUIDE // SAMPLE CALCULATIONS //8" D-BEAM GIRDER WITH 8" HOLLOW CORE LRFDDOWNLOAD INFORMATION:The GIRDER-SLAB system D-BEAM girder Calculator Reference Tool is available for free at SAMPLE CALCULATIONS // 179" D-BEAM GIRDER WITH 10" HOLLOW CORE LRFDS4S618 // TYPICAL SYSTEM DETAILS //NOTE: VERIFY REINFORCING FOR ACTUAL LATERAL LOADSTYPICAL GIRDER-SLAB SYSTEM SECTION @ REINFORCED CORETYPICAL SECTION: REINFORCED CORE WITH 2" CONCRETE TOPPING NOTE: GROUT TO ATTAIN 4,000 PSI PRIOR TO TOPPING (DETAILS S4, S5 & S6 ARE SIMILAR FOR DB9)S1S2S3 TYPICAL SECTION: 8" GIRDER-SLAB SYSTEM ALTERNATE SLAB BEARINGTYPICAL SECTION: 8" GIRDER-SLAB SYSTEM WITHOUT WF SPANDREL BEAMS5 TYPICAL SECTION: 8" GIRDER-SLAB SYSTEM BEARING ON WF BEAMNOTE: DB9 TOP FLANGE WILL BE ABOVE THE SLAB AND WITHIN DEPTH OF TOPPINGTYPICAL GIRDER-SLAB SYSTEM SECTION @ NON-REINFORCED CORE DB9 TOP FLANGE WILL BE ABOVE THE SLAB AND WITHIN DEPTH OF TOPPING STABILIZE BEAMS AND SLABS UNTIL ALL GROUTING AND WELDING IS COMPLETENOTE: NOTE: TO BE USED WHEN NO SPANDREL BEAM AND SLAB DIAPHRAGM SPAN > 30 -0 SPECIAL PLANK ACTING AS DIAPHRAGM CHORDNOTE.