Question

Clayton Campus- R... Unit Guide Manager Current students- ENG1001-Lighter.. SISys NGT001 Q1: Ans: I113.5x10 beam centre mm max compress stress = 358MPa at A/D, max tension stress 286 MPa at QUESTION 2 A concrete slab, 300 mm thick, 3 m wide and 4 m long, is used to support a characteristic live load of 4 kN/m2. It has two service ducts (holes) of diameter 100 mm equally spaced along its width. The concrete slab with ducts is simply supported by two equally loaded steel rectangular hollow section beams, with cross-sectional dimensions of 250 mmx 60 mm x 10 mm thick walls, as shown in Figure Q1. Easel 200,000 MPa and I of the steel section 37.5 x 10 mm Density of concrete =24 kN/m', Density of steel 7850 kg/m; 1 kg = 10 N (a) Calculate the dead load (including self-weight of beam). G and live load, Q acting on each steel beam per unit length, i.e. in kN/m. (b) Calculate the serviceability limit state (SLS) loading in kN/m for each steel beam by applying the appropriate load factors. Draw a diagram showing how this loadings act on the beam. , Concrete slab Ducts of diameter 100 mm 4 m 3 m yane ttps///ms.monash.edu/pluginfile.php/7720227/mod resource/content/1/Topic%207 Practice%20exam%20type % 20questions pdf t ENG1001-Lighter,... SI System ENG1001-Week 0f com- Artic Clayton Campus- R.. Unit Guide Managen Current students applying the appropriate load factors Draw a diagram showing how this loadings act on the beam Concrete slab Ducts of diameter 100 mm 4 m 3 m Live load 4 kPa 300 mm 250 mm S m Steel rectangular hollow section beam with 10 mm thick walls 250 mm 60 mm Figure Q1 936953 png Clayton Campus R.. Unit Guide Manager Current students-.. IENG1001-Lighter... SI System I k 250 mm 8 m Steel rectangular hollow section beam with 10 mm thick walls 250 mm 60 mm Figure Q1 (e) Calculate the corresponding deflection at the mid-span of one beam, using the useful information provided in the next page and the SLS loading calculated in Part (b). Check whether the beam meets the serviceability limit state requirements, based on a maximum beam deflection limit of span/250 936953.png de monash.edu/pluginfile php/7720227/mod resource/content/1/Topic%207 Practice% 20esam%20type%20questions pd Clayton Campus-R Unit Guide Manager Current students I ING1001-Lighter SI System I ENG1001Wk ENG1001:Topic 7 Exam Practice type Questions 2018 Useful Information for deflection () calculations SwL ymid-span 768E L/2 L/2 SwL ymid-span 384EI L (b) 936953 png

Answer 1

72 tu_atıq glab. Tapezeidal load 7.2 kNM KHIM Tokl dead luad of Sab : 0.3 xo4. Aive toad sel eight of beem oo058x dosil of steot size of heemm 250mm uilh to mM ahick cwclu x Gomm Seetin Aaey of hollb k Gomm -28sn x Go ; 0.0058 m

seuf weiqnt of beam 0.00s3 x 76.98 KN/M 73 Totel Deacl luad - 1.2 + 0.uugų = 7.646 KNlm tive loa for dupezoidal toading af slab DL wtr 3p 7-28 3 3 a1-3 8.669 KN m lige inad 3 x1-3 2 q-S16 RA| Sm each beemm. Tokl Di m beam fam Sab = 8.G69 +0.4464 9.128 KHlM 4.816 KN/M Total CL on beum on each bey m

seryisenbitimīt Stele toadling DL 8.669 KHIM ta locud due ho ameacte : Lucro aeed D - t.5x8.69 13 kuim IL Ia due fo concacte - 4.816 x t 5 kHlM 7.224 KH|m Fnctorel sell wve inht of steel heum -b464 x 1-2S- O.S5 KNÍM Ferc to ed Vadue due to ms xde fuchoacd ta lue fir seel : (5 5 Ot L13 +7. 229) kulm o.S58 ku[m. Londing_dingzun Beum um um

peftee tin: a. Ss8 km 384 EL E = 2 110 Ma I = 37.5 xIo° mm x0.558 8000 -394*8X10 x37.5x10 .968 mm

76 w= Rv.224 KHM. A Ia_&9L 5 x 20.224 y3000 XT0X 37.3XT0" 763 X 1.90 mm Totel_defleclian-71-90 t 3.968 CArhial ) 15.87 mm Altowable depleclin 32 mm 200 0 250 Achual delrechm Altowahle delrehim nat ok.. Seetin of beam is not_ok.