DRAFT 1 - Nuform Building Technologies

1 engineering GuideThe Pre-Finished, Stay-in-PlaceConcrete Wall FormworkVersion Building Technologies Inc. is an inno-vative quality-driven Building Technologies compa-ny. Since the introductionof CONFORM (formerlyRoyal Building SystemsTM) in 1992, the producthas received global recognitionfor its approachin providing an innovative solution to the con-struction a patented polymer-based stay-in-place formwork for concrete walls. The extrudedcomponentsslide and interconnect together to cre-ate a concrete formwork. The result is perma-nent, attractive, andpre-finished concrete wallsthat can be easily constructed in any climate.

2 CONFORM is composed of numerous modularcomponents for 100mm, 150mm and 200mm (4 , 6 and 8 ) concrete walls that can be assem-bled to suit any wall layout, whether you are build-ing a vehicle wash, an agricultural facility or alarge industrial no painting, and resistsultra-violet radiation. The polymer components will notdecay or deteriorate over a lifespan that can bemeasured in decades. Furthermore, CONFORMis highly durable, virtually maintenance free,impervious to weather, and energy manufactured using R3 extrusiontechnology as an environmentally friendly prod-uct.

3 The polymer components contain over 55%recycled content and are recyclable, energy effi-cient,mold and mildew resistant and offers complete design flexibility andan innovative Building product that is easy tomaintain, friendly to the environment, and builtto last. Whether you area developer, contractor,architect, engineer, or designeryou can find attrac-tive and cost effective solutions for your next proj-ect with CONFORM. Copyright 2012 Nuform Building Technologies rights reserved. No part of this publication may be reproduced in any form or by any means without written permission from Nuform Building Technologies other products, names and services are trademarks or registered trademarks of their respective Solutions for a Better Introduction.

4 General .. Materials ..43. Properties of Walls with CONFORM .. Notation .. General ..74. Building Code Requirements for Walls .. Use and Occupancy Requirements .. Wall Finish Requirements .. Structural Requirements ..125. Structural Design of Concrete Walls .. Notation .. General .. Design for Axial Loads and Flexure .. Design for Shear .. Walls Designed as Plain Concrete .. Fasteners for Walls with CONFORM .. Construction Conditions for CONFORM Notation .. General .. Hydraulic Concrete Pressure .. Lateral Wall Loads .. Temporary Bracing.

5 267. Illustrative Examples of Walls with CONFORM .. Example #1 150 mm Wall (5000 mm) with CF8i .. Example #2 8 Wall (25 -0 ) with CF8 .. Example #3 CF8i Construction Conditions (8300 mm) .. Example #4 6 Foundation Wall (8 - 1 ) with CF8i ..41 References ..45 Appendix A ..46 Appendix B ..47 This engineering guide has been prepared by NuformBuilding Technologies Inc. ( Nuform ) to assist engi-neers and architects in understanding the engineeringdesign procedures for walls constructed using CONFORM . It is a part of our continuing effort to pro-vide current and practical information to users of engineering guide provides information on the fol-lowing aspects of walls using CONFORM components.

6 Wall Materials Wall Properties Building Code Requirements for Walls Structural Design of Concrete Walls Temporary Construction Conditions Also included in the guide are illustrative design exam-ples of walls with CONFORMin various addition to the engineering guide , the following guidesare also available to assist in designing and Building yourprojectsusing CONFORM. Technical guide Construction GuideAlthough every effort has been made to ensure that allthe information, provided in the engineering guide , isfactual and that the numerical values are accurate andconsistent with current engineering practice, Nuform does not assume any liability for errors or oversightsresulting from the use of information contained in thisguide.

7 Anyone making use of the information provided inthese guides assumes all liability arising from such Introduction1(1)The CF8i components are pre-insulated with 54 mm ( ") of polyurethane insulation cavity is on the exterior side of the wall and is protected from the interior with the non-combustible concrete consists of rigid polymer components thatserve as permanent formwork for concrete walls includingbearing walls, non-bearing walls, shear walls, retainingwalls, foundation walls and many other types of extruded components slide and interlock together tocreate continuous formwork for monolithic concrete two faces of the wall formwork are connected togetherby continuous webs that create hollow rectangularcompo-nents.

8 The webs are punched with holes to allow the con-crete to flow between the components. The hollow CON-FORM components are erected and filled with concrete,in-situ, to provide a monolithic concrete wall. The CON-FORM components remain in place after the concrete isplaced and provide a durable polymer is placed with the CONFORM components intheir final vertical position. This method of concrete wallconstruction is unique and allows slender concrete wallsto be constructed in the vertical position. Typically, slen-der concrete walls are built using precast or tilt-up construc-tionmethods where the walls are cast in a horizontal posi-tion and then lifted into their final vertical permanent pre-finished formworkto create functional, economical concrete walls with manybenefits.

9 The CONFORM components are manufacturedto suit the required wall heights and are site assembled orpre-assembledto suit any Building configuration. Benefitsof using CONFORM include speed of construction, flexi-bility of design, and overalleconomy of are four types of CONFORMas identified inFigure and Table General2. CONFORM 2 Fig. : CONFORMCF4CF6CF8CF8i(1)Table : CONFORMT ypesWalls using CONFORM components are suitable forboth conventional height concrete walls (unsupportedlength not greater than 25 times the wall thickness) andslender concrete walls (walls with unsupported lengthsfrom 25 to 65 times the wall thickness).

10 The walls can bedesigned to accommodate a wide range of axial, windand seismic load conditions, using the equations thatwere developed for conventional and slender concretewalls. The equations are found in concrete design stan-dards, concrete textbooks and concrete design hand-books for insulating concrete forms (ICF), precast and tilt-up wall thickness of a wall with CONFORMis usually lessthan the thickness used for a conventionally formed wall,for most applications. The slenderness of the wall is amajor consideration in the design of the wall.