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jumpclaybrainedUrban and Civil

Nov 25, 2013 (3 years and 7 months ago)

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Page
1

of
6


Document No.

N/A

Rev.

0

Document Description

Shelter
Calculation Sheet For
NHT & DHT



Transmittal

GH
-
EZ
-
T
-
2
764

Date

0
9
-
May
-
13

PMC Coordinator

Khaled Mohamed

Review Code

2

No

Company

Comment

GS Response

Company

Closeout

1

7T04
-
ST
-
14
-
CN
-
0
2
1
,

Cal
culation Sheet For D
HT/DEU
Shelter
(
14
-
SHS
-
001
)
:

-

Cylinder Compressive strength for sub
-
structure
shall be 28 Mpa instead of 26 Mpa.


-

Unsupported length (UNB & UNT) shall be
included in staad

file for roof beam girder
.










-

Crane capacity shall be on hold till receiving
data sheet for overhead crane.





-

Agreed as noted.

28MPa compressive stren
gth will be
used for sub
-
structure.

-

UNT & UNB for the rafter shall be the
length equal to the spacing of the
strut since the roof frame is provided
with horizontal braces. Since no
intermediate nodes are present in the
rafter length between the struts, UNT

& UNB need not be defined because
automatically it will be the member’s
le湧nh 慳 摥晡ult w桩c栠in t桩猠c慳e i猠
t桥⁳ aci湧f⁴桥⁳瑲畴 .

-

Data sheet for cranes are already
received and the capacity is applied in
the design. This will be included in the
c
alculation sheet under ATTACHMENT
#4 Piping & Equipment Information.























Page
2

of
6



-

Impact factor shall be considered for total value
of wheel load.


















-

The effective width shall be estimated for Cold
formed
sections (Purlin/girts), after that the
effective section properties shall be estimated,
we can’t assume full section is effective without
-

For crane girder design shown in
Section 5.2 of the calculation sheets,
the applied crane vertical load with
25% vertical impact factor was applied
to the total wheel load (ex.
2.34

x 1.2
5
=
2.93
tonf in 1
4
-
SHS
-
001).

However, in the crane vertical load in
calculation sheet Section 3.9.1, the
static load due to bridge and trolley
weight is deducted since in STAAD
this static load due to weight is
included in the Dead Load category.

In order

to avoid confusion, the static
loads due to weight will be created
with new load case in STAAD and will
not be included with other dead loads

in next issuance
.

-

Agreed as noted.

The design of purlin/girt will be
revised considering the effective width
of t
he section.


-

Agreed as noted.

Reduction for flexural strength
subjected to wind suction per AISI

























Page
3

of
6

check.

-

Reduction for flexural strength shall be provided
for case of suction load (wind load).





-

Concert anchorage:




獨慬l⁢ ‱⸰⁩湳ne慤ao映1⸲..




Value of side
-
blow out strength is
incorrect, kindly check and
update.


-

According

to AISC 13th edition, used in staad
for design check, second order analysis shall be
considered.

specifications will be incorporated in
the next issuance.

-

Agreed as noted.



Modification factor

3 睩ll 扥
c桡湧e搠do‱⸰



The formula for side
-
face blowout
stre
ngth will be revised as per
MKS formula.

-

Second order analysis was
considered for the design of this
structure. Pdelta command was used
in STAAD design and analysis.


2

7T04
-
ST
-
11
-
CN
-
0
21
,Calculation Sheet For
NHT/CCR
Shelter
(1
1
-
STR
-
001
):

-

Cylinder Compressive strength for sub
-
structure
shall be 28 Mpa instead of 26 Mpa.


-

Stability of columns in out of plan direction at
lines 11A & 19B shall be checked.


-

Unsupported length (UNB & UNT) shall be
included in staad
file for roof beam girder.



-

Agreed as noted.

28MPa compressive
strength will be
used for sub
-
structure.

-

The issue of stability for these
columns is addressed in the revised
drawings and calculations.

-

UNT & UNB for the rafter shall be the
length equal to the spacing of the












Page
4

of
6










-

Crane capacity shall be on hold till receiving
data sheet for overhead crane.





-

Impact factor shall be considered for total value
of wheel load.









strut since the roof frame is provided
with ho
rizontal braces. Since no
intermediate nodes are present in the
rafter length between the struts, UNT
& UNB need not be defined because
automatically it will be the member’s
le湧nh 慳 摥晡ult w桩c栠in t桩猠c慳e i猠
t桥⁳ aci湧f⁴桥⁳瑲畴 .

-

Data sheet for
cranes are already
received and the capacity is applied in
the design. This will be included in the
calculation sheet under ATTACHMENT
#4 Piping & Equipment Information.

-

For crane girder design shown in
Section 5.2 of the calculation sheets,
the applied cr
ane vertical load with
25% vertical impact factor was applied
to the total wheel load (ex. 5.4 x 1.25
= 6.75 tonf in 11
-
SHS
-
001).

However, in the crane vertical load in
calculation sheet Section 3.9.1, the
static load due to bridge and trolley
weight is de
ducted since in STAAD
this static load due to weight is
included in the Dead Load category.




























Page
5

of
6










-

The effective width shall be estimated for Cold
formed
sections (Purlin/girts), after that the
effective section properties shall be estimated,
we can’t assume full section is effective without
c桥ck.

-

Reduction for flexural strength shall be provided
for case of suction load (wind load).





-

Concert anchorage:




獨慬l⁢ ‱⸰⁩湳ne慤ao映1⸲..




Value of side
-
blow out strength is
incorrect, kindly check and update.


In order to avoid confusion, the static
loads due to weight will be created
with new load case in STAAD and will
not be included with other dead
loads.

-

Agreed as no
ted.

The design of purlin/girt will be
revised considering the effective width
of the section.


-

Agreed as noted.

Reduction for flexural strength
subjected to wind suction per AISI
specifications will be incorporated in
the next issuance.

-

Agreed as noted.



Modification factor

3 睩ll 扥
c桡湧e搠do‱⸰



The formula for side
-
face blowout
strength will be revised as per
MKS formula.


-

Second order analysis was considered
for the design of this structure. Pdelta
command was used in STAAD design

















Page
6

of
6



-

According to AISC 13th edition, used in staad
for design check, second order analysis shall be
considered.

and analysis.