Question

A rectangular beam of size 250 * 650 mm, with effective depth of 570 mm, is reinforced with 6- #19 steel bars in two rows. Stirrups of dia. 10 mm are used as shear reinforcement with concrete of Grade C-25 and steel of Grade 420 is to be used.

Find the nominal moment capacity of the section.

Answer #1

Design shear reinforcement for a singly reinforced beam of 250
mm wide and 450 mm effective depth. The beam is reinforced with 4
no., 20 mm dia. bars on tension side. The factored shear force at
critical section is 50 kN. Assume 8 mm diameter 2 legged vertical
stirrups. Use M30 concrete and Fe415 steel

A Reinforced beam of size 350 * 630 mm, with effective
depth of 560 mm, having concrete of Grade C-22 and steel of Grade
420 is to be used. Factored shear force at a distance of 1.0 m from
the face of support is 400 KN. Concrete strength in shear is
assumed as 150 KN. Find the maximum spacing of the stirrups if two
legged stirrup of #13 is used.

. A rectangular beam of size 300 * 600 mm is
reinforced with steel bars of area 1530 mm^2. Concrete of Grade
C-25 and steel of Grade 420 is to be used. Depth of neutral axis
(y-dash) is found to be 312 mm.
Find the stress at the bottom of the section, if
applied bending moment is 45 KN-m.

The width of a rectangular beam is 250 mm and the
effective depth is 317 mm. The tensile reinforcement is provided by
3 bars of 16 mm. Determine the moment of resistance of the section
as per limit state method.
Extracts of BS8110
grades:
Concrete 25 KN
Fcu =40 N/mm2
Fy=fyv=460 N/mm2

Knowing that the reinforced concrete beam cross section
effective depth is d = 310 mm and the properties of materials used
are f'c = 28 MPa and fy = 420MPa and the external ultimate bending
moment Mu = 254 KN.m with strain in tension steel reinforcement
equal to 0.005 . The width of the beam is Select one : a . 511 b .
385 c . 460 mm d . 640

Determine the cracking stress of concrete in a reinforced beam
of rectangular section of breadth 250mm, gross depth 450mm, and
effective cover to reinforcement 40mm. the beam contains 4N16 bars
all arranged in one layer in tension face. Take the concrete is N32
grade.

a
rectangular beam having dimensions: b=300mm and d=550mm, spans 6m
face to face of simple supports. it is reinforced for flexure with
3D36mm bars that continue uninterrupted to the ends of the soan. it
is to carry a service dead load of 23.8 KN/m (including
self-weight) and a service lice load equal to 47.6 KN/m, both
uniformly distributed along the span. use fc’=27.6 Mpa and fy=414.7
Mpa. Normal weight concrete will be used and diameter of stirrup
are 10mm.
1.using...

Calculate the total area of steel required in tension zone for a
simply supported beam of 230 mm wide, 406 mm effective depth. The
total ultimate factored moment on the beam is 146.76 kN.m. Assume
an effective cover for the compression reinforcement as 20 mm.
Mu,lim of the section is 130.76 kN.m. Use M25 grade concrete and
Fe415 steel. Check for spacing, shear and deflection is not
required.

A rectangular beam having b=300 mm and d=575 mm, spans 5.5 m
face to face of simple
supports. It is reinforced for flexure with 4φ32 bars that continue
uninterrupted to the ends of
the span. It is to carry a service dead load wD=30 kN/m (including
self-weight) and a service live
load =45 kN/m both uniformly distributed along the span. Design the
shear reinforcement using
φ10 vertical U stirrups. Use the equation (a) for Vc. Material
strengths are fc’=22 and...

3. Calculate the load carrying capacity and percentage
of reinforcement for a short rectangular column of
cross section dimension 280 mm x 500 mm is reinforced with 4 bars
of 25 mm diameter, 2 bars of 20
mm diameter and 2 bars of 12 mm diameter. Use M30 grade concrete
and Fe 500 grade steel. Also
design a 4 legged ties necessary for this section.

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