5.0 m 5.0 m 3.5 m 4.0 m
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The two-storey office building has a special reinforced concrete moment frame system.
Design Criteria:
Zone: 4 Seismic Source Type: A R: 8.5
Distance to nearest seismic source: 9 km
Weight 1st floor: 1000 kN
Weight 2nd floor: 800 kN
Design lateral forces:
9) 1st Floor (kN): ________________
10) 2nd floor (kN): _______________
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- Describe about the consolidated–undrained (C–U) shear test.A 4-storey with Roof deck AFP armory is to be constructed in Sulu. The facility is essential for the housing of the Philippine Army's newly purchased weapons, ammunitions and explosives. The location of the facility is 7.5 km from the known source which is capable of producing a magnitude 6.7 earthquake. The structure is a Steel MRF with an overall height of 14m from the NGL. The weight per level of the slabs and stairs is equal to 1740 kN. For the walls at the typical levels, the weight is computed as 2362.5 kN and for the parapet at the roof deck level, the weight is computed as 388.8 kN. An equipment 2.0 meters high with a hexagonal cross - sectional area whose sides equal to 1 meter is installed at the second level and has a weight of 100 kPa. Using R = 8.5, which of the following most nearly gives the lateral force at the 4th level in kN? Use Soil Type A.Estimate the total dead loads of the following floor and wall finishes: a. A slab made of reinforced stone concrete, 150mm thick with 25-mm Terrazzo on stone concrete fill. Underneath the slab is a wood furring suspension system and a 12mm-thick gypsum board. b. Movable steel partition, 5m high c. A Masonry Wall made of 6" CHB, 4m high, plastered on both sides with 16.5 kN/m^3 and grouted at 800mm spacing.
- SITUATION A: The floor system shown has the following applied loads. Super Imposed Dead Load = 2.00 kPa Live Load = 1.90 kPa Slab Thickness = 100.00 mm Weight of Concrete = 24 kN/m3 Self-Weight of the beam = 1.92 kN/m Material Specifications: f’c = 21.00 MPa fy = 345.00 MPa Steel Cover = 50.00 mm What is the maximum positive moment of beam BE, acting on the midspan? in kN-m What is the maximum steel ratio of the section located at the supports? What is the actual steel ratio of the beam section at the supports? What is the ultimate moment capacity of the beam at the supports? in kN-m What is the effective flange width at the midspan? in mm What is the height of the compression block of the section at midspan? in mm What is the ultimate moment capacity of the beam at the midspan? in kN-m What would be the height of the CHB that can be placed on beam BE? Assuming the weight of the blocks is 2.30 kN/m per meter height? in metersGiven the tabulation below, compute for the following: 1. Storey Shears, Vx 2. Storey Forces, Fx 3. Compute the Overturning Moment 4. Compute the Resisting Moment 5. Compute the Factor of Safety 6. Is the building safe against overtuning, Explain? Tabulation: Level Wx hx Wxhx Fx Vx Floor Ht. Fxhx(KN.M) RD 1950 3.5 7 1800 3.5 1800 3.5 5 1700 3.5 4 1650 3.5 3 1550 3.5 2 1500 3.5 1. 1400 6. Design Parameters: 1. Assuming the total base shear V is 1800 KN and T=0.64 secs. Since the value of T<0.70 secs, the value of F; is equal to zero. The remaining lateral forces can be distributed using the following formula; 2. Considering the height-width ratio to 0 .50 or less, if the total height of the structure h=24m, let us assume the width of the building shall be 14m in both direction.ll中国移动 4G PN © 11:50 PM 75% 4 A spiral column with the diameter of 500 mm has the effective height of lo-4.0 m. The axial compressive strength of the concrete is f. - 14.3 N/ mm. The longitudinal steel bars are 6 22 with the yield strength ofS, - 360 N/mm. The spirals are 10@50 with the yield strength of f,- 270 N/ mm². If the concrete cover is 30 mm thick, determine the ultimate compressive capacity of the column.
- A 250 mm x 500 mm prestressed beam has a simple span of 6m. The beam uses stress relieved tendons with specified strength f,y 1350 MPa and an effective an effective stress in prestressed reinforcement after allowable for prestress losses fe 760 MPa. The prestressed beam is not to be grouted (unbonded) after the application of the prestress. If the area of prestress reinforcement in tension zone is Aps = 1000 mm applied 70 mm above the bottom of the beam and f'c 35 MPa, determine the safe ultimate moment capacity of the beam. (kN-m)In the design of shear wall system against wind load according to the NBCC, why does the evaluation of the internal pressure ? is not required? (1-2 sentences are allowedThe reinforced concrete cantilever retaining wall is made with 3000 psi normal weight concrete and reinforced with Grade 60 galvanized steel. the main reinforcement rests flexural stresses in the stem and is specified as #7 bars every 18 inches along the length of the wall. The distribution seal distributes stresses along the length of the wall and is specified as #4 bars at 12 I spacing. The concrete cover is 1.5 everywhere. Calculate the developmental length for the main reinforcement using the basic equation (ACI 318 -19: 25.4.2.4). Assume no transverse reinforcement Ktr-->0). Is the main reinforcement embedded deeply enough in the footing to fully develop its yield strength in tension?