The Pontfical urd Royal University of Santo Tomas The Catholic University ofthe Philippines of Architecture SUR: Plane &,nveying AS3 - Reinforced Concrete Design Part l: Reinforcement Details . -Recommended Clear Distance between Bars o Not less than bar diameter nor more than 25mm for beams o Not less than 1.5bar diameter nor more than 40mm for columns . o When bars are placed several layers, the clear distance between layers must not be less than 25mm o Maximum spacing of main reinforcing bars in slabs and walls is equal to 3 times the wall or slab thickness or 500mm whichever is smaller . Spacing for Ties for Columns o Not more than 16 times bar diameter o Not more than 48 times tie diameter o Not more than the least dimension of the cross section . Standard Hooks (NSCP,4s ed. t;gg?J, o A 9Oo, 135o, 18Oo bend made at the end of a reinforcing bar according to industry standards with radius based on the bar diameter. o 180o bend plus Adb extension, but not less than 65mm at free end of bar. o 90" bend plus 12db extension, at free end of bar. " For Stirrups and Tie Hooks o 15mm barand smaller, 90o bend plus 5db extension at free end of bar. o 20mm bar and 25mm, 90" plus t2db extension at free end of bar. o 25mm bar and larger, 135o bend plus 5db extension at free end or bar" Port II: Siab * 0ne-Way Slab * A concrete slab of uniform thickness reinforced in one direction and cast integrally with parallel supporting beams. One-way slabs are suitable only for relatively short spans. This type of slab is supported by two parallel beams, the beam framing into girders in turn framing into columns. The reinforcement in the slab run in one direction only, from beam to beam, hence the slab is known as 0ne-way Slab. kand Fbor, Beato Angelko BW- E5lPaf,s Soulevard, tumooloc, Monfu, PhlllPPines 7500
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
The Pontfical urd Royal
University of Santo TomasThe Catholic University ofthe Philippines
of ArchitectureSUR: Plane &,nveying
AS3 - Reinforced Concrete Design
Part l: Reinforcement Details. -Recommended Clear Distance between Bars
o Not less than bar diameter nor more than 25mm for beams
o Not less than 1.5bar diameter nor more than 40mm for columns
. o When bars are placed several layers, the clear distance between layers must not
be less than 25mm
o Maximum spacing of main reinforcing bars in slabs and walls is equal to 3 times
the wall or slab thickness or 500mm whichever is smaller. Spacing for Ties for Columns
o Not more than 16 times bar diameter
o Not more than 48 times tie diameter
o Not more than the least dimension of the cross section
. Standard Hooks (NSCP,4s ed. t;gg?J,
o A 9Oo, 135o, 18Oo bend made at the end of a reinforcing bar according to industry
standards with radius based on the bar diameter.
o 180o bend plus Adb extension, but not less than 65mm at free end of bar.
o 90" bend plus 12db extension, at free end of bar.
" For Stirrups and Tie Hooks
o 15mm barand smaller, 90o bend plus 5db extension at free end of bar.
o 20mm bar and 25mm, 90" plus t2db extension at free end of bar.
o 25mm bar and larger, 135o bend plus 5db extension at free end or bar"
Port II: Siab
* 0ne-Way Slab* A concrete slab of uniform thickness reinforced in one direction and cast
integrally with parallel supporting beams. One-way slabs are suitable only for
relatively short spans. This type of slab is supported by two parallel beams, the
beam framing into girders in turn framing into columns. The reinforcement in
the slab run in one direction only, from beam to beam, hence the slab is known
as 0ne-way Slab.
kand Fbor, Beato Angelko BW- E5lPaf,s Soulevard,
tumooloc, Monfu, PhlllPPines 7500
Member
Minimum Thickness, h
Members not supporting or attached to partitions or other construction
likely to be damaged by large deflections
Solid One-Way
Slab
a
a
t
e
a
a
a
Minimum Main Reinforcing Ears = 12mm
Minimum TemPerature Bars = 10mm
Maximum Spacing of Main Bars = 3t or 450mrn
Maximum Spacing of Temperature Bars = 5t or 450mm
steelcovering = 2cmm
Clear Distance frorn center of reinforcing bars to the bottom of slab = 25mm
Temperature Bars
r [s = 0.0C2 bt for Grade 300 (fu = 300Mpa)
. As = 0.0018 bt for Grade 400 (fy = 400Mpa)
Minimum Thickness of One-WaY Slab
. Simply SuPPorted = L/ZO
. One End Continuous = Ll24
' Both Ends Continuous = L|ZA
. Cantilevered = LILA
" FrineipalReinforcement. Reinforcement designed ta absorb the stresses from applied loads and