Transcription of PRODUCT LOAD TABLES - Coreslab
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PRODUCT LOAD TABLES - Coreslab
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.
These values assume that the safe superimposed load is composed of 60% dead load and 40% live load. In some cases, loads in excess of those shown can be accommodated by modifying the general parameters such as concrete strength and/or reinforcing patterns. MATERIAL PROPERTIES Concrete: Compressive Strength Final (28-day) = 5000 psi (Precast)
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