Transcription of PRODUCT LOAD TABLES - Coreslab Structures
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PRODUCT LOAD TABLES - Coreslab Structures
PRODUCT LOAD TABLES 1 Under service loads, the bottom of the beam will develop hairline cracks. Ordinary Concrete Beam Even without a load, the ordinary concrete beam must carry its own considerable weight. This leaves only a portion of its strength available to resist added loads. The internal upward force along the length of the beam counteracts the external service loads applied to the member. WHAT IS PRECAST/PRESTRESSED CONCRETE? WHY USE PRECAST/PRESTRESSED CONCRETE? Prestressed Concrete Beam Prestressed or pretensioned before it leaves the plant, a slight arch or camber is noticeable. Energy is stored in the unit by the action of the highly tensioned steel which places a high compression in the lower portion of the member.
sections may be needed. PREFACE TO PRODUCT LOAD TABLES DESIGN RECOMMENDATIONS Maximum Bottom Range of Maximum Precast Tension Stress Span-To-Depth Ratio Double Tee Floor Slabs 12 f 'c 25 to 30 Double Tee Roof Slabs 12 f 'c 35 to 40 Inverted Tee or ELL Beams 6 f 'c 10 to 20 Hollow Core Slabs 6 f 'c 45 to 50
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