Pp07_ Asep_ Nscp 2015 Update on Ch4 Structural Concrete Part 2

HIGHLIGHTS OF CHANGES IN THE 2015 NATIONAL STRUCTURAL CODE OF THE PHILIPPINES VOLUME 1 CHAPTER 4: STRUCTURAL CONCRETE

PART II

DADEC

Engr. DANILO A. DOMINGO, F.ASEP, LM.PICE

Highlights Section 409 — Beams Using the new procedure, the end regions become less congested with reinforcement cages and lowers production cost A new relevant Sub-section 409.5.4.7 for solid precast sections is added to the NSCP 7th Edition.

Highlights

3D Model

Highlights Section 409 — Beams Section 409.6.4 = Minimum Torsional Reinforcement Section 409.7.5 = Longitudinal Torsional Reinforcement Section 409.7.6.3 = Torsion

OPEN STIRRUPS

TORSION BARS

CLOSED STIRRUPS

Highlights Section 409 — Beams Open Web Reinforcement for torsion and shear in slender spandrel beams -an alternative to closed stirrups

Highlights

Highlights Section 412 — Diaphragms

Diaphragms typically are horizontal or nearly horizontal planar elements that serve to transfer lateral forces to vertical elements of the lateral-force-resisting system.

Highlights

Section 412 —Diaphragms

Typical Diaphragm

Highlights

Section 412 —Diaphragms

Highlights

Section 412 —Diaphragms

Highlights

Section 418 —Earthquake-Resistant Structures Transverse Reinforcement for Column

Highlights

Section 418 —Earthquake-Resistant Structures Transverse Reinforcement for Column

Highlights

Section 418 —Earthquake-Resistant Structures Transverse Reinforcement for Column

Highlights

Section 418 —Earthquake-Resistant Structures TABLE 418.7.5.4 Transverse Reinforcement6 for Columns of Special Moment Frames

where: Ash = total cross-sectional area of transverse reinforcement, mm2 s = spacing, m bc = perpendicular to dimension, m ρs = ratio of volume of spiral reinforcement to total volumn of core confined by the spiral

Highlights

Section 418 —Earthquake-Resistant Structures

Highlights

Section 418 —Earthquake-Resistant Structures Development Length of Bars in Tension

NSCP 2010

NSCP 2015 418.8.5 418.8.5.1

Highlights

Section 418 —Earthquake-Resistant Structures Shear Wall

NSCP 2010

NSCP 2015

Highlights

Section 418 —Earthquake-Resistant Structures Shear Wall

Highlights

Section 418 —Earthquake-Resistant Structures Shear Wall

Highlights Section 418 — Earthquake-Resistant Structures Special shear walls – Subsection 418.10 (equivalent to ACI 318-14M-14 Section 18.10, previously ACI 318M-11 Section 21.9), has been extensively revised in view of the performance of buildings in the Chile earthquake of 2010 and the Christchurch, New Zealand, earthquakes of 2011, as wells as full-scale reinforced concrete building tests.

Highlights

Section 418 —Earthquake-Resistant Structures Joint 418.8.2.4

THANK YOU FOR YOUR ATTENTION Highlights of Changes on Chapter 4: Structural Concrete; NSCP 2015 7th Edition