DESIGN OF MASONRY STRUCTURES Part 2 pptx

... compressive strength of 17 N/mm 2 at 7 days may be used. Table 2. 8 Chloride content of mixes Table 2. 9 Characteristic tensile strength of reinforcing steel 20 04 Taylor & Francis • Proper development of bond ... situations 20 04 Taylor & Francis Table 2. 7 (Contd) 20 04 Taylor & Francis 3 Masonry properties 3.1 GENERAL Structural design in masonry requir...

Ngày tải lên: 08/08/2014, 13:21

... properties of masonry 3.6 Effects of workmanship on masonry strength 4 Codes of practice for structural masonry 4.1 Codes of practice: general 4 .2 The basis and structure of BS 5 628 : Part 1 4.3 BS 5 628 : ... of prestress 12 Design calculations for a seven-storey dormitory building according to BS 5 628 12. 1 Introduction 12. 2 Basis of design: loadings 12....

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... application of the code provisions to a typical design is given in Chapter 10. 4.3 BS 5 628 : PART 2 REINFORCED AND PRESTRESSED MASONRY Part 2 of BS 5 628 is based on the same limit state principles as Part ... Codes of practice for structural masonry 4.1 CODES OF PRACTICE: GENERAL A structural code of practice or standard for masonry brings together essential dat...

Ngày tải lên: 08/08/2014, 13:21

... determination of the value of the characteristic compressive strength of the masonry (f k ) and the thickness of the unit required to support the design loads. Once f k is calculated, suitable types of masonry/ mortar combinations ... area. (a) BS 526 8 In BS 5 628 two design checks are suggested: • At the bearing, assuming a local design bearing strength of either 1 ....

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... 5.18) Load from above=1.35 21 .1+1.5 2. 2=31.785kN/m Self-weight of wall=1.35×17 =22 .95kN/m Total vertical design load W 1 =54.735kN/m Load from slab W 2 =1.35×4.1+1.5 2. 2=8.835 kN/m Eccentricity Equation ... load=5.7+1.6 2. 2=9 .2 kN/m Load from right (W 3 ) dead load only=1.4×4.1=5.7kN/m imposed load=5.7+1.6 2. 2=9.2kN/m Wall self-weight=1.4×17 =23 .8kN/m Slenderness...

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... strength of panel=10N/mm 2 • Partial safety factor for masonry= 3.1 • Section modulus for each column=600 cm 3 • Section modulus for each beam=800 cm 3 • Yield stress of steel =25 0N/mm 2 • Partial ... capable of carrying a triangular load of masonry in which the span of the beam represented the base of an equilateral triangle. The method allowed for a proportion of the s...

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... beam of span 4 m and of section 21 5mm×365mm to carry a moment of 24 kNm assuming that the characteristic strength of the material is 19.2N/mm 2 . Assume also that ␥ mm =2. 0 and f y =25 0N/mm 2 . The ... value of d c is assumed to be greater than 2d 1 . 2. If d c is chosen to be between 2d 1 and t /2 then f s2 is taken as f y . 3. If d c is chosen to be between t /2...

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... openings, etc., we have G k =3.5 21 ×10.5+6×4.8 21 ×10.5 +( 12 2. 6×4 .25 2. 85+4 2 2. 42 4 .25 2. 85 +2 21 2. 6 2. 85 +21 2 2 2. 42 2. 85)×7 =17643kN 12. 5 WIND LOADING 12. 5.1 General stability To explain ... weight of masonry is 21 kN/m 3 . Design the beam for serviceability condition ( ␥ f =1). Solution (clause 29 .1, BS 5 628 : Part 2) (clause 29 .2, BS 5 628...

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... floor 1.1×( 126 9/10 3 ) 21 ×6×3= 527 .6kNm • 4th floor (1.1× 126 9 21 /10 3 )×9×9 /2= 1187 .20 kNm • 3rd floor 29 .313×( 12 12/ 2) =21 10.54kNm • 2nd floor 29 .313×(15×15 /2) = 329 7.70kNm 20 04 Taylor & Francis 20 04 Taylor ... shown in Fig. 12. 10. 20 04 Taylor & Francis Table 12. 1 (Contd) 20 04 Taylor & Francis BM at centre of the panel= 627 .8×(Cp e +CP i )h 2 ×0.1...

Ngày tải lên: 08/08/2014, 13:21

... of elasticity of concrete (kN/mm 2 ) E m modulus of elasticity of masonry (kN/mm 2 ) E m , E b modulus of elasticity of mortar and brick (kN/mm 2 ) E s modulus of elasticity of steel (kN/mm 2 ) E x , ... (N/mm 2 ) f ci strength of concrete at transfer (N/mm 2 ) f k characteristic compressive strength of masonry (N/mm 2 ) f kx characteristic flexural stren...

Ngày tải lên: 08/08/2014, 13:21