REGARDING TYPE OF ROOF

Dear all,

In one of the enquiry, the customer requirement of roof was "SATERI TYPE ".
If any one knows about it like How it will be designed or is it possible to do this type of roof in PEB?
Please share.

ya we can do it, we can do any thing with steel....



1=pitched, 2=hipped, 3=cross pitched, 4=pyramidal

your category is 2,
Hipped or sateri Roof : It is a type of roof where all sides slope downwards to the walls, usually with a fairly gentle slope.

the below pic shows the exact arrangement of hipped roof...









do one typical frame in 2d as usual.. then @ the end depending up on the hip add some built up members to get that triangle shape,
then design the wind columns with that extra member to connect the hip..
like below one



then design the purlins in this triangle portion with local coefficient....

these are enough @ qutation stage....

if you want to do in 3d, im attaching a sample file ( just for modeling point of view) .... go through it





STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 17-Mar-14
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 10 0 0; 3 0 5.00001 0; 4 10 5.00001 0; 6 0 0 7.50002;
7 10 0 7.50002; 8 0 5.00001 7.50002; 9 10 5.00001 7.50002;
10 5.00001 6.00001 7.50002; 11 0 0 15; 12 10 0 15; 13 0 5.00001 15;
14 10 5.00001 15; 15 5.00001 6.00001 15; 16 0 0 22.5; 17 10 0 22.5;
18 0 5.00001 22.5; 19 10 5.00001 22.5; 20 5.00001 6.00001 22.5; 21 0 0 30.0001;
22 10 0 30.0001; 23 0 5.00001 30.0001; 24 10 5.00001 30.0001;
25 5.00001 5.00001 30.0001; 26 5.00001 0 30.0001; 27 5.00001 5.00001 0;
28 5.00001 0 0;
MEMBER INCIDENCES
1 3 1; 2 4 2; 5 8 6; 6 9 7; 7 8 10; 8 9 10; 9 13 11; 10 14 12; 11 13 15;
12 14 15; 13 18 16; 14 19 17; 15 18 20; 16 19 20; 17 23 21; 18 24 22; 21 23 20;
22 20 24; 23 3 10; 24 10 4; 25 23 25; 26 3 27; 27 3 8; 28 8 13; 29 13 18;
30 18 23; 31 4 9; 32 9 14; 33 14 19; 34 19 24; 35 10 20; 36 25 24; 37 25 26;
38 27 4; 39 27 28; 40 20 25; 41 27 10;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 1.99947e+008
POISSON 0.3
DENSITY 76.8191
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 248210 FU 399894 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 2 5 TO 18 TAPERED 0.62 0.006 0.32 0.2 0.01
21 TO 41 TAPERED 0.42 0.006 0.42 0.2 0.01
CONSTANTS
BETA 0 MEMB 12
BETA 90 MEMB 37 39
MATERIAL STEEL ALL
SUPPORTS
1 2 6 7 11 12 16 17 21 22 26 28 PINNED
FINISH



***********************************
Application of Wind Load :

For hipped roofs, pressure coefficients
(including local values) may be taken on
all the four slopes, as appropriate from
Table 6, and be reduced by 20% for the
hip slope...........

Hipped roofs experience smaller
suction as compared to pitched roofs. Thus a relief of 20% is being permitted in
the pressure coefficients for the hipped slopes.


************************************


May this help to get some idea....

have a nice day....

THANK YOU SO MUCH