- Problem 2 The Data Of The Floor Framing Plan Are Given Below The Positive And Negative Moment Sections Of Beam Gh Is To 1 (28.18 KiB) Viewed 13 times
- Problem 2 The Data Of The Floor Framing Plan Are Given Below The Positive And Negative Moment Sections Of Beam Gh Is To 2 (384.23 KiB) Viewed 13 times
in beam GH due to loads using approximate method of analysis in
kN.m
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: Concrete cover-60mm Stirrups diameter-12mm L-6.5m; L:-8.0m S-3.0m Liveload-2.40kPa b-400mm Column 600mm by 600mm S L₁ b bo ● O SET 0,1,2,3(A) 4,5,6 (8) 7,8,9 (C) 8-28 12₂ fc(MPa) 42 49 56 fy(MPa) 420 340 270 4-28 h h Table 409.3.1.1 Minimum Depth of Non-Prestressed Beams Support Condition Minimum ¹ l/16 €/18.5 Simply supported One end continuous Both ends continuous Cantilever €/21 1/8 Expressions applicable for normal weight concrete and fy=420 MPa. For other cases, minimum h shall be modified in accordance with Sections 409.3.1.1.1 through 409.3.1.1.3, as appropriate. Table 406.5.2 Approximate Moments for Non- Prestressed Continuous Beams and One-Way Slabs Moment Location M Condition Discontinuous end integral with support End span Positive Discontinuous end unrestrained w/11 Interior spans All w/16 Member built Wh/24 Interior face of exterior support Integrally with supporting spandrel beam Member built integrally with supporting column w/16 Two spans Exterior face of first interior More than two support w/10 spans Face of Other supports All w/11 Face of all supports satisfying (a) or (b) a) Slabs with spans not exceeding 3m. b) Beams where ratio of sum of column stiffnesses to beam stiffness exceeds 8 at cach end of span w₂/12 [¹]To calculate negative moments, ,, shall be the average of the adjacent clear span lengths. 409.3.1.1.1 For fy other than 420 MPa, the expressions in Table 409.3.1.1 shall be multiplied by (0.4+ [₂/700). 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 be multiplied by the greater of (a) and (b): it. 1.65 0.0003we: b. 1.09. Negative