STRAMIT RESIDENTIAL FLOOR - Stramit Building …

1 P r o d u c t t e c h n i c a l m a n u a lSTRAMITRESIDENTIAL FLOORFRAMING SYSTEM DFF2 STRAMIT RESIDENTIAL FLOORFRAMING SYSTEMIMPORTANT NOTICE AND DISCLAIMERThe information contained within this brochure is intended for general use and information only. Before application in a particular situation, STRAMIT recommends that you obtain appropriate independent qualified expert advice confirming the suitability of product(s) and information inquestion for the application proposed. While STRAMIT accepts its legal obligations, be aware however that to the extent permitted by law, Stramitdisclaims all liability (including liability for negligence) for all loss and damage resulting from the direct or indirect use, or reliance on, theinformation provided in this brochure.

2 A suspended FLOOR design solution for both single and two storeyresidential C-JoistU-Beam Extended Bearer3 INTRODUCTIONThe STRAMIT RESIDENTIAL FLOOR Framing system is designedto address the needs of domestic house wide range of section sizes provides freedom indesigning FLOOR joists, bearers for most locations. TheStramit RESIDENTIAL FLOOR Framing System can easily beadapted to a variety of house addition, the STRAMIT RESIDENTIAL FLOOR Framingsystem has extended bearer options to provide largerspan design STRAMIT RESIDENTIAL FLOOR Framing System offers joist spans at 450mm centres ( )CONTENTSPAGEINTRODUCTION ..3 SELECTION AND SPECIFICATION.

3 4 DESIGN AND CONSTRUCTION ..6 Design Load Criteria ..6 Load Areas ..7 Framing Connections and Support ..23 Balconies and Verandahs ..28 Post/Piers and Bracing ..29 INSTALLATION ..30 PROCUREMENT ..31 ADDITIONAL INFORMATION ..31 REFERENCES ..31 The STRAMIT RESIDENTIAL FLOOR Framing System is onlysuitable for use in RESIDENTIAL home construction. It is notintended, nor suitable, for use in any form of mezzainecommercial, institutional, industrial, agricultural or anyother form of non- RESIDENTIAL construction. If in any doubtcontact STRAMIT to confirm the suitability of a BearerStramit JoistStramit C-Joist and BearerStramit C-Joist with (U-Beam shown)

4 Extended Bearer extended bearer spans available up to 8 metresSELECTION ANDSPECIFICATION Termite resistant Non combustible components Lightweight and easy to install Ideal for flat or sloping sites Fast track construction with engineered components Pre-cut and prefabricated components enable speedyconstruction, even on sloping sites Suitable for use on standard industry pier systems Dimensional stability Achieve true lines without warping Economical in materials and construction Delivers a finish without shrinkage cracks Will not warp or twist and remains stable for the lifeof the buildingDimensions and MassMaterialsStramit C-Joist and Bearers are cold rolled formedsections manufactured from high strength steel inmaterial thickness ranging from (G550 grade,550 MPa minimum yield stress material) to (G450 grade, 450 MPa minimum yield stress material),with Z350 zinc coating (350grams per square metreminimum coating mass)

5 In accordance with AustralianStandard STRAMIT accessories, such as FCB3 brackets,extended bearer brackets and lateral end restraints, aremade from 300 MPa or 450 MPa steel with a minimumglavanised coating of 275 grams per square C-Joists and Bearers are supplied with a lengthtolerance of + STRAMIT RESIDENTIAL FLOOR Framing System has beendesigned to NASH RESIDENTIAL and Low-Rise SteelFraming manual - Part 1 (Design Criteria) to meet theperformance requirement of the NCC. Use of theseprovisions reduces the uncomfortable bounce andvibration that may be present in other product range can be used for both single and twostorey construction.

6 Internal bearers or joists do notsupport any load bearing walls. Deflections under serviceloads are limited to a minimum of span/500 and 1 STRAMIT C-Joist & BearerDimensions & Mass STRAMIT C-Bearer STRAMIT C-JoistsDLWWDT able 2 STRAMIT Extended Bearer RangeDimensions & Massmembersectiondepthwidthlipthickness massDWL *Depth WidthMass D (mm)W (mm)(kg/m) * sections supplied by others5 DurabilityGround clearance requirements STRAMIT steel flooring isnot intended for use in applications where the clearanceabove the ground is less than 400mm. A reduction ofground clearance is possible in small localised areas onsloping sites to a minimum of 150mm within 2m of aventilated external wall.

7 In all cases the subfloor ventilationdetails should meet the requirements of Part of theNational Construction Code, Volume application requirements regarding location, product,finish, ventilation refer to table RESIDENTIAL FLOOR SYSTEM DURABILITY CRITERIAOne of the following applicable criteria must be adhered to ensure satisfactory performance of the FLOOR system. The standardsystem is not suitable for applications closer than 300m to calm still coastal water or closer than 1km to rough active >10km from the coast<10km but > 1km from the< 1km but > 300m from & not in a heavycoast & not in a heavycalm still coastal water & industrial in a heavy FLOOR Sub- FLOOR can be Sub- FLOOR should be enclosed Sub- FLOOR must be enclosedcompletely openand incorporate ventilators, or& incorporate ventilators, or Sub- FLOOR painted with etch primer Sub- FLOOR painted with highplus water-based acrylic top epoxy mastic based systemUpper FLOOR No ceiling lining required If fully enclosed Building .

8 If fully enclosed Building ,of Two Storeyno ceiling lining required, orno ceiling lining required, orBuilding If not fully enclosed, sub- FLOOR If not fully enclosed, sub-floorpainted with etch primer pluspainted with high buildwater based acrylic top coatepoxy mastic systemBalcony / Provide weather tight Provide weather tight top cover Provide weather tight topVerandahtop cover protection, orprotection & complete cover protection & complete For open deck or stripencapsulation, orencapsulation, orflooring sub- FLOOR painted Sub- FLOOR painted with etch primer Sub- FLOOR painted with highwith etch primer plus water- plus water-based acrylic top coatbuild epoxy mastic systembased acrylic top coatTable 3 Notes: The information above is current at the time of publication.

9 Please check the NCC and BlueScope website for the latest information and guidance. Ifuncertain about the use of the system in an aggressive environment, please contact your nearest STRAMIT office for AND CONSTRUCTIONC onsideration of house plans is required when designingthe FLOOR STRAMIT C-Joist system has the extended beareroption. Extended bearers provide design flexibility andallow for large spans to be achieved in areas such as abovegarages, rumpus, living rooms and Load CriteriaThe Limit State Method has been used throughout thisbrochure. Minimum design load and load combinations aregenerally as per NASH Standard Part allowancesFloor live kPa kPa - for load: Dead load:Self-weight plus partition loads,plus weight of flooring, roof, andwalls if and Dynamic serviceability Deflection, D1 L/500 and D1<12mm load combination: dead load + 100% live load.

10 Deflection, D2<2mmload roof mass: 92 roof mass: mass: :an external area, one or more metresabove ground. All load data has been based on using18mm fibre cement sheeting as the flooring material; thisprovides substantial cross bracing whilst maintaining live loading loads:weight of non-load bearing walls, floorunderlays and FLOOR coverings, ceilings, services throughfloors, are assumed to be a maximum of spans:the distance between the end supports of ajoist, which is usually the webs of the bearers to whichthe joist is spans:the centre distance between the piers orposts supporting the bearer. Single-span bearers only havetwo supports, one at each end, even if there are a seriesof such bearers in line.