DESIGN OF MASONRY STRUCTURES Part 5 potx

... (DL)=1. 35 ␥ f (LL)=1 .5 Design vertical loading (Fig. 5. 16) Loading from above (W 1 )=1. 35 1 05+ 1 .5 19=170.25kN/m Load from left (W 2 ) dead load only=1. 35 4.1 =5. 535kN/m imposed load =5. 5 35+ 1 .5 2.2=8.835kN/m ... 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...

Ngày tải lên: 08/08/2014, 13:21

... 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 56 28: Part 1 4.3 BS 56 28: Part 2—reinforced and ... strength of reinforced masonry 10.4 Deflection of reinforced masonry beams 10 .5 Reinforced masonry columns, using BS 56 28: Part 2 10.6 Reinfor...

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... deformation of the mortar in the bed joints of the masonry. 2. The apparent crushing strength of the unit in a standard test is not a direct measure of the strength of the unit in the masonry, since ... strength of a unit of given material increases with decrease in height because of the restraining effect of the testing machine platens on the lateral deformation of the...

Ngày tải lên: 08/08/2014, 13:21

... application of the code provisions to a typical design is given in Chapter 10. 4.3 BS 56 28: PART 2—REINFORCED AND PRESTRESSED MASONRY Part 2 of BS 56 28 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 data...

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... in BS 56 28. 5. 5.1 Approximate method of BS 56 28 1. The load transmitted by a single floor is assumed to act at one-third of the depth of the bearing areas from the face of the wall (Figs. 5. 7(a) and ... 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...

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... 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 self- weight of the masonry ... terms of design loads and are to be compared with the design strengths of the material in compression and shear. The design of the beam would be carried out in acco...

Ngày tải lên: 08/08/2014, 13:21

... characteristic strength of the masonry has limited influence on the design. 10.2 .5 Example Design a simply supported brickwork beam of span 4 m and of section 215mm×365mm to carry a moment of 24kNm assuming ... lesser of 2F t =80kN/m length (h/2 .5) F t =(3.0/2 .5) ×40=48kN/m length (which governs) Shear strength is found using Clause 25 of BS 56 28, f v =0. 35+ 0...

Ngày tải lên: 08/08/2014, 13:21

... 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 21kN/m 3 . Design the beam for serviceability condition ( ␥ f =1). Solution (clause 29.1, BS 56 28: Part 2) (clause 29.2, BS 56 28: Part...

Ngày tải lên: 08/08/2014, 13:21

... BS 56 28 is higher than in the Eurocode, but it does not make much difference to the design. 12.8 DESIGN OF PANEL FOR LATERAL LOADING: BS 56 28 (LIMIT STATE) To explain the principle of the design ... 32.2.1). The value of ß depends on the eccentricity of loading; hence the value of e needs to be evaluated before design can be completed. 12.6 .5 Calculation of eccentric...

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... infill and steel ␥ mm partial safety factor for compressive strength of masonry ␥ ms partial safety factor for strength of steel ␥ mv partial safety factor for shear strength of masonry ε strain as ... properties. Height of wall=24m. Number of storeys=8. • Moisture movements. Irreversible shrinkage of masonry, 0.0 052 5%. Shrinkage in height of wall, 0.000 052 5×24×10=1.2...

Ngày tải lên: 08/08/2014, 13:21