CM Lab 7 - CVE 474 Construction Materials Concrete Lab...

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CVE 474 Construction Materials/ Concrete Lab Experiment #7: Wood Properties 6/2/2011 Group #3 Jeff Gable Jonathan Brate Matt Vanhouten Tyler Book Danny Luehrmann Results Part 1: Compression Parallel to the Grain Specimens 2”x4”x8” The data table shown below shows the results obtained when conducting compressive testing according to ASTM D 143. The data is from all groups since there was an insufficient amount of data. Using the acquired data, the Compressive Strength (F c ) was calculated according to ASTM standards. Calculations: F c =P/A F c = Compressive Strength (psi) P= Axial Load (lbs) A= Cross sectional Area (in 2 ) Group 1 Clear: F c =P/A

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=17030/(3.5x1.5) =3243.81 psi Calculations: X bar = Average Failure Stress of Clear Specimens Standard Deviation (S d )= (0.18)(X bar ) 55 Exclusion Value = X bar -1.645S d Part 2: Flexural Specimens 2”x4”x36” Flexural Test Width (b, in) Depth (d, in) Length (L, in) Failure Load (P, lb) MOR (psi) 1C 3.5 1.5 31.875 1870 7570 1D 3.5 1.5
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CM Lab 7 - CVE 474 Construction Materials Concrete Lab...

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