Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Choose the correct answer from the followings
Use ACI method to design a concrete mix which is required to obtain f'c28 = 34.5MPa and a slump of 75mm . The fineness modulus of the aggregate is 3.0 , the bulk density of coarse aggregate is 1600 kg/m² and the maximum size is 25. Both the specific gravity of fine and coarse aggregate are 2.68. neglect the absorption and total moisture content .
1- The W/C ratio is *
a-0.74
b-0.48
c-0.57
d-0.61
2- The cement content is *
420 kg/m3
240 kg/m3
204 kg/m3
402 kg/m3
3- The carse aggregate content is *
1140 kg/m3
1004 kg/m3
1040 kg/m3
1400 kg/m3
4- The fine aggregate content is *
807 kg/m3
780 kg/m3
708 kg/m3
870 kg/m3
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- Note:hand written solution should be avoided.arrow_forwardConcrete is required for several structural members of a residential house. Due to the present moisture, it is expected that the concrete shall be non-aerated (Non AE) with a 28 day compressive strength of 3.000 psi for slabs and 4,000 psi for beams and columns. Due to extra moisture present in the site, the slump to be used shall be the minimum allowed by the ACI mix. Using a 3/4 inch max aggregate size, compute for the weight of cement, water coarse aggregate, and fine aggregate. Aggregate details: Cement: Type 1. Specific Gravity = 3.15 Coarse Aggregate: Bulk Specific gravity (SSD) = 2.65; absorption capacity = 4%. Dry-rodded unit weight= 100 lb/ft: surface moisture 1.2% Fine Aggregate: Bulk Specific Gravity (SSD) = 2.60: Absorption capacity = 1.5%: Fireness modulus = 2.70: Surface moisture= 496 Structural members dimmensions: Columns: 8 pes 300mm x 300mm x 3100mm (Length x Width x Height) Beam: 9 pcs. 300mm x 500mm x 4000mm (Length x Width x Height) Slab: 12000mm x 4000mm x 400mm…arrow_forwardPROBLEM 1 Given the following parameters, design a Concrete Mix Design ACI Method Required average strength will be 28MPa with slump of 75 to 100mm. The coarse aggregate has a nominal maximum size of 25 mm and a dry-rodded mass of 1900kg/m'. Other properties of the ingredients are: Cement Type I specific gravity 3.15 Coarse aggregate bulk specific gravity 2.75 absorption 3% Fine aggregate bulk specific gravity 2.68 absorption 1.2 % fineness modulus 3 Adjustment for Aggregate Moisture: Tests indicate total moisture of 5 percent in the coarse aggregate and 8 percent in the fine aggregate.arrow_forward
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