APPLICATION GUIDE Microllam LVL - gresserco

1 Microllam LVLS caffold PlankScaffolding takes a beating. Planks sit onframes and hang from supports, subjected tothe affronts of rain, snow, heat, cold not tomention heavy loads and wear and tear fromnumerous assembly/knock-down companies need planks they can relyon planks that have minimal twist and bowfrom that exposure. Trus Joist Industrial hasthe solution: planks made of Microllam laminated veneer lumber (LVL). SAFETY is a scaffold user s main piece is proof-loaded by machine,ensuring that the product meets Trus JoistIndustrial quality standards and OSHA deflection limits when it leaves the mill. RELIABLE CONSISTENCY. Microllam LVLscaffold plank is made from many layers ofthin veneer, so there are no concentratedareas of knots or cross-grain to contend with.

2 MADE TO ORDER. Microllam LVLscaffold plank isn t sold as stock lumber it s manufactured to scaffold GUIDETABLE OFCONTENTSP roduct Warranty .. 2 Product Identification .. 3 OSHA Program Directive .. 3 Span .. 4 Canada .. 5 Design Properties .. 5 Cautions .. 6, 7 Storage Recommendations .. 8 Visual Evaluation .. 9 Mechanical Evaluation .. 10 Testing .. 11 Trus Joist warrants Microllam LVL scaffold planks to be free from defects in materials,workmanship and design. Microllam LVL scaffold planks will carry the loads specified when used inaccordance with the design information included herein, provided that the product is not misused orotherwise subjected to conditions which reduce the product s strength (see Storage Recommendations,Cautions, Visual Evaluation and Testing).

3 The above warranties are in lieu of all other warranties,express or implied. The implied warranties of merchantability and fitness for a particular purposeare excluded from this warranty. Consequential and indirect damages are hereby East Mallard Drive Boise, Idaho 837061-877-856-9663 Tom Denig, PresidentMicrollam LVL Scaffold Planks2 Trus Joist Microllam LVL Scaffold Plank APPLICATION GUIDE 3060 July 2002 Product IdentificationTHERE ARE MANY GRADES OFMICROLLAM LAMINATED VENEERLUMBER (LVL). USE ONLY SCAFFOLDGRADE FOR ensuresbonding in extendedwet STAMP confirms conformance TESTEDSTAMP confirmsfactory load testingof each superiorstrength Joist logoTrus Joist mill numberPRODUCTIONDATECUSTOMER NAME EMBOSS (maximum 9 characters)INDEPENDENT INSPECTION AGENCY LogoEND SEALER retardsmoisture SURFACEfor improved traction isavailable upon 9, 1975 OSHA Program Directive #100-31To: Assistant Regional Directors/OSHAS ubject: (a)(10), Scaffold PlankingPurpose: To provide specific information on Microllam laminated planking which meets the equivalent requirements of (a)(10).

4 Directives Affected: : Several regions have reviewed and provided documentation indicating Microllam laminated planking is equivalent to scaffold grade : Section (a)(10) states, All planking shall be scaffold grades, or equivalent, as recognized by approved grading rules for the species of wood used. A comparison of engineering data on Microllam laminated planking with engineering data on planking of scaffold grades, as indicated in the West Coast Lumber Inspection Bureau Grading Rule, finds that Microllam laminated planking provides the equivalent strength of scaffold grade planking, and meets the equivalent requirements in (a)(10).This is not to be construed as either an approval or an endorsement of the product. This determination is contingent upon the product continuing to meet the specified engineering criteria which was J.

5 White Associate Assistant Secretary for Regional ProgramsProduct Identification3 Trus Joist Microllam LVL Scaffold Plank APPLICATION GUIDE 3060 July 2002250#One Person250#250#36"Two Person250#250#250#18"18"Three Person1. Design load deflection is limited to Spans shown are considered the distance between the center lines of bearers. Actual Microllam LVL scaffold plank lengths will begreater due to overhangs or overlaps specified in ANSI Contact Trus Joist for additional span Two-span tables assume both spans have equal lengths. Contact Trus Joist for other than equal two-span Uniform and person loads shown are defined in ANSI Proper Microllam LVL scaffold plank selection must be based on the mostrestrictive load case anticipated in Microllam LVL scaffold planks treated with Hoover Treated Wood Products Exterior Fire-X fire retardant treatment are on the Qualified Products List of Products Qualified Under Military Specification MIL-L-19140 (QPL 19140).

6 6. Microllam LVL scaffold planks treated with Hoover Treated Wood Products Exterior Fire-X fire retardant treatment are a UL -listedbuilding material with the designation FR-S. This designation denotes that the flame spread rating and smoke developed values are25 or less, and that the product has been subjected to tests of thirty minutes duration during which the flame spread did not progressmore than 10'-6" beyond the centerline of the burners, with no evidence of significant progressive combustion. There is no increase inthe listed Classification when the product is subjected to the Standard Rain Test (UL790).UNTREATED '-6"12'-0"12'-0"12'-6"14'-0"15'-6"10'-0" 10'-0"10'-0"10'-6"12'-0"13'-0"11'-6"12'- 6"14'-6"15'-6"18'-6"21'-0"9'-0"9'-6"10'- 6"11'-6"13'-0"15'-6"6'-0"6'-6"7'-6"8'-0" 9'-0"11'-0"12'-6"12'-6"12'-6"12'-6"14'-0 "15'-6"10'-0"10'-0"10'-0"10'-6"12'-0"13' -0"14'-6"15'-6"18'-6"19'-6"23'-0"27'-0"9 '-0"9'-6"11'-0"12'-0"14'-0"16'-6"6'-6"6' -6"8'-0"8'-6"10'-0"12'-0"9'-6"10'-0"11'- 0"11'-6"12'-6"14'-0"9'-0"9'-0"9'-0"9'-6" 10'-6"11'-6"9'-6"10'-0"12'-0"12'-6"15'-0 "17'-6"8'-0"8'-0"9'-0"9'-6"11'-0"13'-0"5 '-0"5'-6"6'-0"6'-6"8'-0"9'-0"11'-0"11'-0 "11'-0"11'-6"12'-6"14'-0"9'-0"9'-0"9'-0" 9'-6"10'-6"11'-6"11'-6"12'-6"15'-0"16'-0 "19'-0"22'-6"7'-6"8'-0"9'-6"10'-0"11'-6" 14'-0"5'-6"5'-6"6'-6"7'-0"8'-6"10'-0"DRY USEM oisture Content 19%WET USEM oisture Content <30%SIMPLESPANTWOSPAN(1)

7 SIMPLESPANTWOSPAN(1)50 psf75 psfOne PersonTwo PersonThree Person50 psf75 psfOne PersonTwo PersonThree Person50 psf75 psfOne PersonTwo PersonThree Person50 psf75 psfOne PersonTwo PersonThree Person1 " x 9"1 " x 9 "1 " x 11 "2" x 12"2 " x 11 "2 " x 11 "LIVE LOADINGFIRE RETARDANT TREATED '-6"10'-6"10'-6"12'-0"12'-0"12'-0"9'-0"9 '-0"9'-0"10'-6"10'-6"10'-6"10'-6"10'-6"1 1'-6"13'-0"13'-0"14'-6"8'-6"8'-6"9'-0"10 '-0"10'-0"11'-0"6'-0"6'-0"7'-0"7'-6"8'-0 "9'-0"11'-6"11'-6"11'-6"13'-6"13'-6"13'- 6"9'-6"9'-6"9'-6"11'-6"11'-6"11'-6"12'-0 "12'-6"14'-6"16'-0"17'-0"21'-0"9'-0"9'-0 "10'-0"11'-0"11'-0"12'-6"6'-6"6'-6"7'-6" 8'-0"8'-0"10'-0"9'-6"9'-6"9'-6"11'-0"11' -0"11'-0"8'-6"8'-6"8'-6"10'-0"10'-0"10'- 0"9'-6"9'-6"10'-6"11'-6"12'-0"13'-0"7'-6 "7'-6"8'-6"9'-0"9'-0"10'-0"5'-0"5'-6"6'- 0"6'-6"6'-6"7'-6"10'-6"10'-6"10'-6"12'-6 "12'-6"12'-6"9'-0"9'-0"9'-0"10'-6"10'-6" 10'-6"10'-6"11'-0"12'-6"14'-0"14'-6"18'- 0"7'-6"8'-0"9'-0"9'-6"10'-0"11'-0"5'-6"5 '-6"6'-6"6'-6"7'-0"8'-0"DRY USEM oisture Content 19%WET USEM oisture Content <30%SIMPLESPANTWOSPAN(1)SIMPLESPANTWOSPA N(1)

8 50 psf75 psfOne PersonTwo PersonThree Person50 psf75 psfOne PersonTwo PersonThree Person50 psf75 psfOne PersonTwo PersonThree Person50 psf75 psfOne PersonTwo PersonThree Person1 " x 9 "1 " x 9 "1 " x 11 "1 " x 9"1 " x 9 "1 " x 11 "LIVE LOADING(1) Two-span table indicates the most restrictive span lengths considering live loads on one or both Tables Joist Microllam LVL Scaffold Plank APPLICATION GUIDE 3060 July 2002 LIVE LOADING1 " x 9 "1 " x 9 "1 " x 11 "50 psf10'-0"11'-6"11'-6"75 psf8'-6"10'-0"10'-0"500 lbs6'-6"8'-6"9'-6"Workers & Tools (25 psf + 250 plf)8'-6"10'-6"10'-6"Workers & Materials (75 psf + 265 plf)7'-0"8'-6"8'-6"50 psf9'-0"10'-6"10'-6"75 psf8'-0"9'-0"9'-0"500 lbs5'-0"7'-0"8'-6"Workers & Tools (25 psf + 250 plf)8'-0"9'-6"9'-6"Workers & Materials (75 psf + 265 plf)6'-6"7'-6"7'-6"DRY USEM oisture Content 19"SIMPLESPANWET USEM oisture Content <30"SIMPLESPAN( kN/m2) ( kN/m2) ( kN) ( kN/m2+ kN/m) ( kN/m2+ kN/m) ( kN/m2) ( kN/m2+ kN/m) ( kN/m2+ kN/m) ( kN) ( kN/m2) Tables CanadaUNTREATED CANADAMICROLLAM LVL SCAFFOLD PLANK DESIGN PROPERTIES1.

9 Design properties are determined in accordance with ANSI , Appendix These properties apply only to Microllam LVL scaffold planks used in conditions where the moisture content of the plank is notexpected to exceed 19%. These values apply only to planks used in the flat Fb, Fvand E shall be adjusted by a factor of when conditions of use are such that the moisture content of the plank is expected toexceed 19%.4. Fastener values (nails, bolts, screws) shall be as provided for sawn Douglas fir per the National Design Specification for WoodConstruction, (NDS ), 1997 edition, or per CSA O86-01, Engineering Design in Values are for new or like-new Live load deflection is limited to No increases in allowable unit stresses are included for load-sharing PLF loads are applied across the plank direction at Thickness1 " and lessGreater than 1 "1 " and lessFlexural Stress, Fb2900 psi2400 psi2175 psiModulus of Elasticity, x x x 106 Horizontal Shear Stress, Fv145 psi145 psi109 psiCoefficient of Variation (MOR)

10 12%12%12%12%109 x 1061800 psiGreater than 1 "UNTREATEDFIRE RETARDANT TREATEDD esign PropertiesSpan Tables Canada5 Trus Joist Microllam LVL Scaffold Plank APPLICATION GUIDE 3060 July 2002 Proper planks can be damagedwhen thrown from a scaffold. Lower scaffold planks in an orderly manner. Scaffold planks thathave been thrown from scaffolding or had heavyobjects dropped on them should be removed fromservice and evaluated before reuse. Forklifts or other mechanical lifting devices shouldalways be used to lift and lower bundles of scaffoldplanks. Bundle stickers should be thick enough toallow easy access for forks. Corner protection shouldbe used when moving bundles with chain or cableswings. Do not dump scaffold planks from trucks. Donot push bundles of scaffold planks with the ends of forks.