- Problem 2 The Data Of The Floor Framing Plan Are Given Below The Positive And Negative Moment Sections Of Beam Gh Is To 1 (60.41 KiB) Viewed 7 times
fc =49 fy= 340 mpa
- Problem 2 The Data Of The Floor Framing Plan Are Given Below The Positive And Negative Moment Sections Of Beam Gh Is To 2 (42.8 KiB) Viewed 7 times
(PROBLEM 2)
Calculate the minimum height h of beam GH considering the entire grid in mm. Round up
your answer to the nearest 100mm. (Hint: In order to use approximate analysis in the
succeeding questions, beam dimensions shall be prismatic in all the members of the grid.)
PROBLEM 2 The data of the floor framing plan are given below. The positive and negative moment sections of beam GH is to be checked. The superimposed deadload is 10 kPa and the unit weight of concrete is 24 kN/m³. Given: Table 406.5.2 Approximate Moments for Non- Prestressed Continuous Beams and One-Way Slabs SET Concrete cover-60mm Stirrups diameter-12mm fc(MPa) fy(MPa) 42 0,1,2,3(A) 420 M Moment Location L-6.5m; L-8.0m S-3.0m Condition Discretinuous end 49 340 4,5,6 (8) integral with pport -8/14 Liveload-2.40kPa End span b-400mm Positive 7,8,9 (C) 56 270 Discontinuem end unrestrained w/11 Column-600mm by 600mm Interior spans All w/16 Member buit w/24 Interior face of exterior pot Integrally with mupporting spandrel beam 4/16 Member built integrally with supporting colum Two spans Exterior ace of first 4.4./9 w/10 interior More than two support spans Face of AB Ober supports Face of all supports staying (a) (b) a) Sabe with spans not exceeding 3m b) Beams where allo of sum of column stiffnesses to bear stiffess exconds 5 at cach end of span 12/12 8-28 To calculate negative moonis, f, shall be the everge of the adjacent clear span lengths. B 4-28 Negative!! 27°C Clou
6-28 4-28 Table 409.3.1.1 Minimum Depth of Non-Prestressed Beams Support Condition Minimum ¹ 4/16 Simply supported One end continuous Both ends continuous Cantilever /18.5 4/21 C/B PExpressions applicable for normal weight concrete and 1,-420 MPa. For other cases, minimum A shall be modified in accordance with Sections 409.3.1.1.1 through 409.3.1.1.3, as appropriate. not exceeding Im Beas where ratio of sum of celem afhe 4/12 supports satisfying (s) or (b) to beam affe excends 3 at each end of span M. To calculate negative moms, , shall be the average of the adjacent clear spus ngh 409.3.1.1.1 For f, other than 420 MPa, the expressions shall be multiplied by in Table 409.3.1.1 (0.4+/,/700), 409.3.1.1.2 For non-prestressed beams made of lightweight concrete having w, in the range of 1440 to 1840 kg/m, the expressions in Table 409.3.1.1 shall he multiplied by the greater of (a) and (b): a 1.65-0.0003w,: b. 1.09.