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Design Criteria

The document provides details on the design parameters for a proposed 8-story building located 7.6 km from a seismic source zone. It includes storey heights, structural system properties as a special moment resisting frame of concrete, dead and live loads, and seismic parameters calculated according to NSCP 2015 for determining the design base shear. Load values and seismic coefficients are presented to calculate the design lateral force resisting system.

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Jonniel De Guzman
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98 views44 pages

Design Criteria

The document provides details on the design parameters for a proposed 8-story building located 7.6 km from a seismic source zone. It includes storey heights, structural system properties as a special moment resisting frame of concrete, dead and live loads, and seismic parameters calculated according to NSCP 2015 for determining the design base shear. Load values and seismic coefficients are presented to calculate the design lateral force resisting system.

Uploaded by

Jonniel De Guzman
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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STORIES [LEVELS]

Levels Storey height (m)


Footing to Ground Floor 1.8
Ground Floor to Third Floor Deck 4

13.8
Zone 4
Seismic Source Type A
Distance to Seismic Source 7.6 km
Soil Profile Type D
Importance Factor 1
R (Special Moment resisting frame – Concrete) 8.5
Near source factor, Na 1.096
Near source factor, Nv 1.392
Seismic coefficient, Ca 0.44 Na
Seismic coefficient, Cv 0.64 Nv
Reliability/Redundancy factor, ρ 1.2
Paco = 260 kph
STORIES (LEVELS)
Levels Storey height (m)
GF to Roof Deck 3

PROPERTIES
Beam Column Slab
LOADS
Dead Loads
1. Selfweight
γconcrete = 24

2. Member Load
150mm CHB = 3.11
fc' fy 100mm CHB = 2.98
27.6 276
Floor Load GF 2nd to 4th flr
kN/m3 slab
Ceiling 0.1 0.1
MEP 0.2 0.2
kN/m per meter height Floor Finish 1.1 1.53
kN/m per meter height Interior Partition 1 1
Water Proofing - -
2.4 2.83

Live Load
4.8 kN/m2 4.8 kN/m2
5th to 6th Floor 7th to 8th Flr Roof Deck
kN/m2
0.1 0.1 0.1 kN/m2
0.2 0.2 0.2 kN/m2
1.1 1.1 1.1 kN/m2
1 1- kN/m2
- - 0.26 kN/m2
2.4 2.4 1.66

2.4 kN/m2 1.9 kN/m2 1.9 kN/m2


Seismic Parameters
UBC 97/ NSCP 2015
Zone = 4
Seismic Source Type = A
Importance Factor ( I ) = 1
R = 8.5
Structure is located 7.6km from the seismic source
Ct = 0.0731
Wind Parameters
Wind (ASCE 7-10 / NSCP 2015)

[ Standard Occupancy]
[ Special Moment Resisting Frame - CONCRETE]
c source
Vwind = 290 kph
I = 1
Exposure = B [ Typical residential structure in urban area ]
INTERPOLATION:

Near-Source Factor Na
Seismic Closest Distance To
Source Known Seismic Source
Type ≤ 2 km
A 1.5
B 1.3
C 1

Near-Source Factor Nv
Seismic Closest Distance To
Source Known Seismic Source
Type ≤ 2 km
A 2
B 1.6
C 1
rce Factor Na
Closest Distance To
Known Seismic Source
≤ 5 km 7.6 km ≥ 10 km
1.2 1.096 1
1 1.144 1
1 1 1

rce Factor Nv
Closest Distance To
Known Seismic Source
5 km 7.6 km 10 km ≥ 15km
1.6 1.392 1.2 1
1.2 1.096 1 1
1 1 1 1
NSCP 2015

Parameters T = Ct (hn)3/4
Z 0.4 = 0.793
I 1.0
Rwx 8.5
Rwz 8.5
Na 1.096
Nv 1.392 V = CvIW
S RT
Ct 0.0731
hn 24 = 0
W
Cv 0.64
Ca 0.44

Total design base shear need not exceed:

V = 2.5CaIW
R

= 0

Design base shear shall not be less than:

V = 0.11CaIW
=

V = 0.8ZNvIW
R

If Ft ≠ 0:

Ft = 0.07TV
=
sec NSCP 2015 eq. (208-12)
sec

> 0.70 sec therefore Ft = 0.70TV

kN

kN

ed not exceed:

kN

kN

DESIGN BASE SHEAR IS TOO LARGE!


USE THIS VALUE!

ot be less than:

kN
kN

DESIGN BASE SHEAR IS TOO SMALL!

kN

kN

DESIGN BASE SHEAR IS TOO SMALL!

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