COMMERCIAL IN CONFIDENCE Structural Formwork Plywood Mechanical Properties & Grade F17 Structural Plywood Product Evaluation Author: Mr Peter Brown Checked and Authorised: Prof Keith Crews on behalf of accessuts Pty Ltd for Besgrade Products Sdn Bhd 6 th September 2011 Project No: 2010002435 Report ID: 2011002 BES-MP accessuts Pty Limited PO Box 123 Broadway NSW 2007 Australia Tel +61 2 9514 1916 Fax +61 2 9514 1433 ABN 55 098 424 312 accessuts is a controlled entity of the University of Technology, Sydney
TABLE OF CONTENTS 1. INTRODUCTION... 3 2. AIM:... 3 3. PROCEDURE:... 4 4. SUMMARY OF STRUCTURAL PROPERTIES... 5 4.1 Target Properties for Formply... 5 4.2 Test Results for Formply Bending Parallel to Grain... 5 4.3 Test Results for Formply Bending Perpendicular to Grain... 5 5. MOISTURE CONTENT... 6 6. CONCLUSIONS & CERTIFICATION OF PROPERTIES... 6 7. SUMMARY OF ANALYSIS... 7 7.1 Parallel Grain Bending... 8 7.2 Perpendicular to Grain Bending... 9 DETAILED Results & data... 10 Structural Formwork Plywood Mechanical Properties and Grade 2
1. INTRODUCTION This report presents the results of mechanical testing for designation of grade properties, undertaken in accordance with AS / NZS 2269.1 2008. The testing was requested by Mr Woei Shyong PEK, Executive Director from Besgrade Products Sdn Bhd and the tests were conducted in the Structural Testing Laboratory of the University of Technology, Sydney (Broadway Campus) as Job number: 2011002BES. The tests were carried out by suitably trained technical officers of the Faculty of Engineering and Information Technology, UTS prior to being analysed / reported by Mr Peter Brown and then checked / authorised by Prof Keith Crews. 2. AIM: To determine the relevant mechanical properties of the 18mm Formply, manufactured by Besgrade Products Sdn Bhd, which was supplied to UTS. This report only gives the performance of the particular sheets supplied, due to no quality control certification obtained by the client at the time of testing, as well as no product identification or traceability to production lines. Structural Formwork Plywood Mechanical Properties and Grade 3
3. PROCEDURE: UTS has fabricated the test specimens in accordance with AS / NZS 2269.1, from 30 sheets of Plywood that were picked and supplied by Besgrade Products Sdn Bhd. All specimens have been tested for the following properties in accordance with AS / NZS 2269.1, and analysed in accordance with AS / NZS 4063 and AS / NZS 2269-2. As required by AS 6669, the formwork plywood has been tested for: 1. bending parallel to grain 2. bending perpendicular to grain 3. moisture content Structural Formwork Plywood Mechanical Properties and Grade 4
4. SUMMARY OF STRUCTURAL PROPERTIES 4.1 TARGET PROPERTIES FOR FORMPLY Grade MoE F17 14000 MPa f b 45 MPa 4.2 TEST RESULTS FOR FORMPLY BENDING PARALLEL TO GRAIN E k, mean R 0.05 R k R k,norm 17176 MPa 65.35 MPa 61.6 MPa 69.4 MPa 4.3 TEST RESULTS FOR FORMPLY BENDING PERPENDICULAR TO GRAIN E k, mean R 0.05 R k R k,norm 16067 MPa 57.75 MPa 54.6 MPa 62 MPa Structural Formwork Plywood Mechanical Properties and Grade 5
5. MOISTURE CONTENT The results of 30 randomly selected samples of plywood for determination of oven dried moisture content in accordance with AS / NZS 2098.1, confirm an average m.c.of 7.4%. 6. CONCLUSIONS & CERTIFICATION OF PROPERTIES When tested in accordance with AS / NZS 2269-1, and analysed in accordance with AS / NZS 4063 and AS/NZS 2269.2, the mechanical properties of the subject plywood product meet the performance requirements (defined in AS 1720.1) for: Formply - F17 for strength and F17 for stiffness. Authorised Signatory: Dr Keith Crews BE(hons) ME PhD AIWSc MIABSE MIEAust FIAgrE CPEng NPER-3 Professor of Structural Engineering Structural Formwork Plywood Mechanical Properties and Grade 6
7. SUMMARY OF ANALYSIS Structural Formwork Plywood Mechanical Properties and Grade 7
7.1 PARALLEL GRAIN BENDING Method 1 Method 2 Method 3 Method 4 lognormal distribution to the total data set (2P) Weibull distribution to a lower tail data set. non parametric distribution for a data set ASTM D2915 03 non-parametric Sample size 30 f (0.05) 65.35 MPa value f (0.05) 67.62 MPa f (0.05) 69.25 MPa f 05[75]. 53.8 MPa mean 107.84 ln[f (mean) ] 4.64 MPa rank 15.0 99.79356 f (mean) 107.8 MPa rank value 1 stdev 0.28 MPa 15%tile 5.35 82.00779 stdev 33.42 MPa note: Vr 28.6% MAX 15.0 Vr 18.7% Vr 31.0% Max no. of data points = 800 Ω 05[75] 0.93 slope (a) 0.1615 Ω 05[75] 0.91 Ω 05[75] 0.90 note: use Ctrl "A" to clear data char. strength f 05[75]. 61.1 MPa intercept (b) 4.6934 char. strength f 05[75]. 61.4 MPa char. strength f 05[75]. 62.4 MPa sampling factor k s 0.94 sampling factor k s 0.91 method 1 sampling factor k s n/a char. strength f k. 53.8 MPa char. strength f k. 61.6 MPa char. strength f k. 61.4 MPa char. strength f k. #VALUE! MPa Rk(norm) 69.4 MPa method 2 sampling factor k s 0.92 char. strength f k. 63.4 MPa no of value f'x values percentile - p(i) percentile - p(i) percentile - p(i) Sample Size Order Statistic B p i = (i -0.5)/n ln( f'x) p i = (i -0.5)/n X i = ln(-ln(1-p i )) Y i = ln(f i) p i = (i -0.5)/n (f'x - mean)^2 size 28 value for 15th 1 53.8 0.017 3.985 0.017-4.086 3.985 0.017 2920 2853 1 2 2 69.8 0.050 4.245 0.050-2.970 4.245 0.050 1448 5378 2 3 102 4 3 75.9 0.083 4.329 0.083-2.442 4.329 0.083 1020 78 3 125 5 4 77.5 0.117 4.350 0.117-2.087 4.350 0.117 919 102 148 4 6 5 82.0 0.150 4.407 0.150-1.817 4.407 0.150 667 125 170 5 7 6 87.5 0.183 4.471 0.183-1.597 4.471 0.183 415 148 193 6 8 215 9 7 89.1 0.217 4.490 0.217-1.410 4.490 0.217 351 170 7 237 10 8 89.7 0.250 4.497 0.250-1.246 4.497 0.250 328 193 259 8 11 9 89.9 0.283 4.499 0.283-1.099 4.499 0.283 320 215 281 9 12 10 92.3 0.317 4.525 0.317-0.966 4.525 0.317 241 237 303 10 13 325 14 11 92.7 0.350 4.529 0.350-0.842 4.529 0.350 229 259 11 347 15 12 96.8 0.383 4.573 0.383-0.727 4.573 0.383 121 281 455 12 20 13 98.8 0.417 4.593 0.417-0.618 4.593 0.417 82 300 562 13 25 14 98.8 0.450 4.593 0.450-0.514 4.593 0.450 82 668 30 879 40 15 99.8 0.483 4.603 0.483-0.415 4.603 0.483 65 1089 50 16 101.1 0.517 4.616 0.517-0.319 4.616 0.517 45 Reproduced from ASTM D 2915 17 101.5 0.550 4.620 0.550-0.225 4.620 0.550 41 B The rank of the data in ascending order. 18 101.9 0.583 4.624 0.583-0.133 4.624 0.583 36 19 104.6 0.617 4.650 0.617-0.042 4.650 0.617 10 20 104.9 0.650 4.653 0.650 0.049 4.653 0.650 9 21 108.9 0.683 4.691 0.683 0.140 4.691 0.683 1 22 110.6 0.717 4.706 0.717 0.232 4.706 0.717 8 23 113.9 0.750 4.736 0.750 0.327 4.736 0.750 37 24 127.1 0.783 4.845 0.783 0.425 4.845 0.783 373 25 129.1 0.817 4.861 0.817 0.529 4.861 0.817 454 26 141.1 0.850 4.950 0.850 0.640 4.950 0.850 1109 27 141.2 0.883 4.950 0.883 0.765 4.950 0.883 1111 28 164.0 0.917 5.100 0.917 0.910 5.100 0.917 3150 29 167.9 0.950 5.123 0.950 1.097 5.123 0.950 3606 30 222.7 0.983 5.406 0.983 1.410 5.406 0.983 13188 Method 1 Sample size 30 E (0.05) 11603 MPa mean 17602 MPa E (0.50) 17625 MPa mean ln (samples) 9.75 MPa note: stdev 0.24 MPa Max no. of data points = 800 Vr 24.0% sampling factor k s 0.97 note: use Ctrl "A" to clear data method 1 mean E k. 17084 MPa method 2 mean E k. 16067 MPa percentile - p(i) no of value MoE values p i = (i -0.5)/n ln( E) 1 10639.7 0.017 9.272 2 11850.3 0.050 9.380 3 12562.7 0.083 9.438 4 12809.4 0.117 9.458 5 13256.4 0.150 9.492 6 13392.5 0.183 9.502 7 13569.6 0.217 9.516 8 13702.3 0.250 9.525 9 14468.1 0.283 9.580 10 14909.5 0.317 9.610 11 15005.9 0.350 9.616 12 16235.7 0.383 9.695 13 16515.6 0.417 9.712 14 17036.2 0.450 9.743 15 17049.2 0.483 9.744 16 17530.8 0.517 9.772 17 17867.4 0.550 9.791 18 18214.9 0.583 9.810 19 18288.3 0.617 9.814 20 19280.4 0.650 9.867 21 19677.6 0.683 9.887 22 20438.9 0.717 9.925 23 20712.9 0.750 9.939 24 20955.7 0.783 9.950 25 22415.1 0.817 10.017 26 22983.2 0.850 10.043 27 23656.6 0.883 10.071 28 23883.5 0.917 10.081 29 24006.2 0.950 10.086 30 25149.4 0.983 10.133 Structural Formwork Plywood Mechanical Properties and Grade 8
7.2 PERPENDICULAR TO GRAIN BENDING Method 1 Method 2 Method 3 Method 4 lognormal distribution to the total data set (2P) Weibull distribution to a lower tail data set. non parametric distribution for a data set ASTM D2915 03 non-parametric Sample size 30 f (0.05) 57.75 MPa value f (0.05) 60.49 MPa f (0.05) 60.86 MPa f 05[75]. 56.4 MPa mean 92.38 ln[f (mean) ] 4.49 MPa rank 15.0 85.48423 f (mean) 92.4 MPa rank value 1 stdev 0.27 MPa 15%tile 5.35 65.67584 stdev 24.35 MPa note: Vr 27.0% MAX 15.0 Vr 12.6% Vr 26.4% Max no. of data points = 800 Ω 05[75] 0.94 slope (a) 0.1050 Ω 05[75] 0.94 Ω 05[75] 0.92 note: use Ctrl "A" to clear data char. strength f 05[75]. 54.2 MPa intercept (b) 4.4145 char. strength f 05[75]. 56.7 MPa char. strength f 05[75]. 55.7 MPa sampling factor k s 0.95 sampling factor k s 0.94 method 1 sampling factor k s n/a char. strength f k. 56.4 MPa char. strength f k. 54.6 MPa char. strength f k. 56.7 MPa char. strength f k. #VALUE! MPa Rk(norm) 62.0 MPa method 2 sampling factor k s 0.93 char. strength f k. 56.5 MPa percentile - p(i) percentile - p(i) percentile - p(i) Sample Size Order Statistic B no of value f'x values p i = (i -0.5)/n ln( f'x) p i = (i -0.5)/n X i = ln(-ln(1-p i )) Y i = ln(f i) p i = (i -0.5)/n (f'x - mean)^2 size 28 value for 15th 1 56.4 0.017 4.032 0.017-4.086 4.032 0.017 1295 2853 1 2 2 61.0 0.050 4.111 0.050-2.970 4.111 0.050 984 5378 2 3 102 4 3 65.0 0.083 4.175 0.083-2.442 4.175 0.083 748 78 3 125 5 4 65.6 0.117 4.183 0.117-2.087 4.183 0.117 719 102 148 4 6 5 65.7 0.150 4.185 0.150-1.817 4.185 0.150 713 125 170 5 7 6 67.3 0.183 4.209 0.183-1.597 4.209 0.183 631 148 193 6 8 215 9 7 68.1 0.217 4.221 0.217-1.410 4.221 0.217 589 170 7 237 10 8 68.1 0.250 4.221 0.250-1.246 4.221 0.250 589 193 259 8 11 9 69.8 0.283 4.245 0.283-1.099 4.245 0.283 512 215 281 9 12 10 73.0 0.317 4.290 0.317-0.966 4.290 0.317 377 237 303 10 13 325 14 11 75.4 0.350 4.323 0.350-0.842 4.323 0.350 288 259 11 347 15 12 81.3 0.383 4.398 0.383-0.727 4.398 0.383 123 281 455 12 20 13 82.9 0.417 4.418 0.417-0.618 4.418 0.417 90 300 562 13 25 14 84.6 0.450 4.438 0.450-0.514 4.438 0.450 60 668 30 879 40 15 85.5 0.483 4.448 0.483-0.415 4.448 0.483 48 1089 50 16 93.5 0.517 4.538 0.517-0.319 4.538 0.517 1 Reproduced from ASTM D 2915 17 98.0 0.550 4.585 0.550-0.225 4.585 0.550 31 B The rank of the data in ascending order. 18 101.7 0.583 4.622 0.583-0.133 4.622 0.583 87 19 102.8 0.617 4.632 0.617-0.042 4.632 0.617 108 20 104.4 0.650 4.649 0.650 0.049 4.649 0.650 145 21 108.1 0.683 4.683 0.683 0.140 4.683 0.683 246 22 109.4 0.717 4.695 0.717 0.232 4.695 0.717 290 23 110.7 0.750 4.707 0.750 0.327 4.707 0.750 335 24 111.3 0.783 4.712 0.783 0.425 4.712 0.783 358 25 115.0 0.817 4.745 0.817 0.529 4.745 0.817 509 26 115.4 0.850 4.749 0.850 0.640 4.749 0.850 532 27 125.3 0.883 4.831 0.883 0.765 4.831 0.883 1085 28 127.0 0.917 4.844 0.917 0.910 4.844 0.917 1196 29 135.6 0.950 4.910 0.950 1.097 4.910 0.950 1866 30 143.8 0.983 4.968 0.983 1.410 4.968 0.983 2642 Method 1 Sample size 30 E (0.05) 12366 MPa mean 18010 MPa E (0.50) 18001 MPa mean ln (samples) 9.78 MPa note: stdev 0.21 MPa Max no. of data points = 800 Vr 21.7% sampling factor k s 0.97 note: use Ctrl "A" to clear data method 1 mean E k. 17502 MPa method 2 mean E k. 17176 MPa percentile - p(i) no of value MoE values p i = (i -0.5)/n ln( E) 1 12420 0.017 9.427 2 13786 0.050 9.531 3 14040 0.083 9.550 4 14124 0.117 9.556 5 14204 0.150 9.561 6 14445 0.183 9.578 7 14575 0.217 9.587 8 14716 0.250 9.597 9 15069 0.283 9.620 10 15495 0.317 9.648 11 16500 0.350 9.711 12 16576 0.383 9.716 13 16778 0.417 9.728 14 16811 0.450 9.730 15 16851 0.483 9.732 16 17200 0.517 9.753 17 17217 0.550 9.754 18 17261 0.583 9.756 19 17526 0.617 9.771 20 18122 0.650 9.805 21 18189 0.683 9.809 22 18679 0.717 9.835 23 19236 0.750 9.865 24 19466 0.783 9.876 25 20681 0.817 9.937 26 23065 0.850 10.046 27 23959 0.883 10.084 28 26808 0.917 10.196 29 28014 0.950 10.240 30 28483 0.983 10.257 Structural Formwork Plywood Mechanical Properties and Grade 9
DETAILED RESULTS & DATA Calculate Properties Current Date: 02-Sep-11 Software version: 1-2; July 24 2008 DATA ENTRY: Properties Parallel to Grain year: Specimen Stiffness Strength Last 30 AS/NZS 4063 CALCULATIONS: - for last 30 test specimens test series: 2011002 ave width: def @ 20% P @ 20% def @ 40% P @ 40% P max P/ MOE MOR specimens Stiffness target MOE Strength target MOR specimen: date: time: sample no: mm mm kn mm kn kn N/mm MPa MPa ranked COV Ek, mean 12000 R0.05 COV Rk Rk, norm 40 01-2011002-01 300 4.63 0.49 17.25 1.49 3.783 79.2 17261 98.8 121.9 02-2011002-02 300 4.60 0.50 17.36 1.48 3.872 77.1 16811 101.1 121.9 INSTRUCTIONS: 03-2011002-03 300 4.56 0.54 15.16 1.48 4.17 89.3 19466 108.9 121.9 1) enter the first 30 test results in columns 2 to 10 (yellow to left) 04-2011002-04 300 3.30 0.53 12.30 1.48 5.405 105.8 23065 141.2 122.2 2) press the "Calculate Properties" button (above) 05-2011002-05 300 3.54 0.53 12.13 1.48 4.868 109.9 23959 127.1 122.2 06-2011002-06 300 5.27 0.55 17.29 1.50 3.708 79.0 17217 96.8 122.2 The relevant properties are displayed below 07-2011002-07 300 6.08 0.55 18.34 1.49 3.535 77.0 16778 92.3 125.9 08-2011002-08 300 6.32 0.54 18.71 1.48 3.44 75.7 16500 89.7 125.9 3) enter each subsequent set of results for each test specimen 09-2011002-09 300 6.29 0.54 18.57 1.49 3.44 77.3 16851 89.9 125.9 and press the "Calculate Properties" button after each data set is entered 10-2011002-10 300 5.57 0.55 16.82 1.48 4.36 83.1 18122 113.9 127.3 11-2011002-11 300 4.74 0.54 17.35 1.50 3.349 76.0 16576 87.5 127.3 This will then calculate properties based on the last 30 test specimens 12-2011002-12 300 5.70 0.55 18.98 1.49 3.412 71.1 15495 89.1 127.3 13-2011002-13 300 4.92 0.54 16.35 1.49 3.549 83.4 18189 92.7 132.3 The current data set is always the lowest line of numbers 14-2011002-14 300 5.00 0.54 15.78 1.49 4.005 88.2 19236 104.6 132.3 15-2011002-15 300 3.30 0.52 10.76 1.50 8.526 130.7 28483 222.7 132.3 16-2011002-16 300 5.40 0.55 17.25 1.49 3.783 78.9 17200 98.8 137.2 17-2011002-17 300 3.44 0.55 11.02 1.48 6.278 123.0 26808 164.0 137.2 18-2011002-18 300 2.81 0.52 10.46 1.50 6.43 128.5 28014 167.9 137.2 19-2011002-19 300 5.41 0.54 17.24 1.49 4.24 80.4 17526 110.6 140.9 20-2011002-20 300 6.48 0.54 21.31 1.50 3.90 64.8 14124 101.9 140.9 21-2011002-21 300 6.97 0.54 21.98 1.49 3.821 63.2 13786 99.8 140.9 22-2011002-22 300 4.99 0.49 19.90 1.50 2.968 67.5 14716 77.5 144.5 23-2011002-23 300 6.34 0.53 20.68 1.48 2.672 66.3 14445 69.8 144.5 24-2011002-24 300 7.43 0.55 21.87 1.49 2.906 65.2 14204 75.9 144.5 25-2011002-25 300 6.58 0.54 20.77 1.49 4.017 66.9 14575 104.9 153.6 26-2011002-26 300 6.52 0.54 20.46 1.50 3.885 69.1 15069 101.5 153.6 27-2011002-27 300 6.06 0.54 20.77 1.49 3.14 64.4 14040 82.0 153.6 28-2011002-28 300 7.12 0.55 23.79 1.50 2.06 57.0 12420 53.8 155.7 29-2011002-29 300 3.72 0.53 13.72 1.48 4.95 94.9 20681 129.1 155.7 30-2011002-30 300 5.01 0.53 16.13 1.48 5.40 85.7 18679 141.1 155.7 3.4% 21611 OK 121.9 8.8% 116.6 144.8 OK Parallel Structural Formwork Plywood Mechanical Properties and Grade 10
Calculate Properties Current Date: 02-Sep-11 Software version: 1-2; July 24 2008 DATA ENTRY: Properties Perpendicular to Grain year: 0 Specimen Stiffness Strength Last 30 AS/NZS 4063 CALCULATIONS: - for last 30 test specimens test series: 2011002 ave width: def @ 20% P @ 20% def @ 40% P @ 40% P max P/ MOE MOR specimens Stiffness target MOE Strength target MOR specimen: date: time: sample no: mm mm kn mm kn kn N/mm MPa MPa ranked COV Ek, mean 12000 R0.05 COV Rk Rk, norm 40 01-2011002-01 300 5.17 0.54 15.70 1.49 5.222 90.8 10640 65.7 58.8 02-2011002-02 300 3.15 0.53 11.52 1.49 5.415 114.3 13392 68.1 58.8 INSTRUCTIONS: 03-2011002-03 300 3.82 0.55 13.20 1.50 4.484 101.1 11850 56.4 58.8 1) enter the first 30 test results in columns 2 to 10 (yellow to left) 04-2011002-04 300 4.01 0.55 12.26 1.48 5.415 113.1 13256 68.1 73.3 2) press the "Calculate Properties" button (above) 05-2011002-05 300 3.65 0.53 11.94 1.50 5.171 116.9 13702 65.0 73.3 06-2011002-06 300 3.59 0.53 11.93 1.49 4.851 115.8 13570 61.0 73.3 The relevant properties are displayed below 07-2011002-07 300 2.89 0.52 9.05 1.48 6.797 155.4 18215 85.5 76.3 08-2011002-08 300 3.92 0.54 11.67 1.50 6.73 123.5 14468 84.6 76.3 3) enter each subsequent set of results for each test specimen 09-2011002-09 300 3.55 0.54 10.94 1.48 6.46 127.2 14909 81.3 76.3 and press the "Calculate Properties" button after each data set is entered 10-2011002-10 300 3.08 0.53 9.61 1.48 6.59 145.4 17036 82.9 80.2 11-2011002-11 300 2.01 0.55 6.45 1.45 9.14 203.8 23883 115.0 80.2 This will then calculate properties based on the last 30 test specimens 12-2011002-12 300 2.74 0.52 9.64 1.49 8.801 140.9 16516 110.7 80.2 13-2011002-13 300 2.56 0.53 9.50 1.49 5.213 138.5 16236 65.6 81.6 The current data set is always the lowest line of numbers 14-2011002-14 300 2.14 0.55 6.89 1.45 10.78 191.3 22415 135.6 81.6 15-2011002-15 300 2.69 0.53 8.88 1.47 7.434 152.5 17867 93.5 81.6 16-2011002-16 300 1.74 0.51 7.42 1.49 8.17 174.4 20439 102.8 82.3 17-2011002-17 300 2.07 0.52 7.57 1.50 8.849 178.8 20956 111.3 82.3 18-2011002-18 300 2.28 0.51 8.03 1.48 8.70 167.9 19678 109.4 82.3 19-2011002-19 300 2.72 0.52 9.35 1.48 8.59 145.5 17049 108.1 83.2 20-2011002-20 300 3.19 0.55 10.53 1.49 5.35 128.0 15006 67.3 83.2 21-2011002-21 300 2.87 0.55 9.22 1.50 5.802 149.6 17531 73.0 83.2 22-2011002-22 300 2.66 0.51 8.71 1.46 7.79 156.0 18288 98.0 86.4 23-2011002-23 300 2.37 0.51 8.17 1.47 8.304 164.5 19280 104.4 86.4 24-2011002-24 300 2.42 0.55 7.79 1.49 9.179 176.7 20713 115.4 86.4 25-2011002-25 300 3.74 0.96 8.45 1.97 11.432 214.6 25149 143.8 92.7 26-2011002-26 300 2.06 0.52 6.78 1.49 10.095 204.8 24006 127.0 92.7 27-2011002-27 300 1.80 0.49 6.82 1.50 9.965 201.9 23657 125.3 92.7 28-2011002-28 300 1.80 0.49 6.88 1.49 8.09 196.1 22983 101.7 95.6 29-2011002-29 300 3.86 0.53 12.59 1.49 6.00 109.3 12809 75.4 95.6 30-2011002-30 300 4.10 0.54 12.80 1.48 5.55 107.2 12563 69.8 95.6 4.6% 13341 OK 58.8 12.3% 55.3 67.4 OK Perpendicular Structural Formwork Plywood Mechanical Properties and Grade 11