TABELKA ZBIERANIA OBCIĄŻEŃ Z PŁYT |
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Stropodach odwrócony |
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Wymiary słupów |
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Rodzaj obciążenia |
Grubość [m] |
L1 [m] |
L2 [m] |
Ciężar [kN/m^3] |
gk[kN] |
γf |
g0[kN] |
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bs= |
0,3 |
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Płyta chodnikowa |
0,05 |
6,3 |
8,1 |
24,000 |
61,236 |
1,2 |
73,483 |
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hs= |
0,3 |
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Kruszywo otoczakowe |
0,08 |
6,3 |
8,1 |
20,000 |
81,648 |
1,2 |
97,978 |
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H1= |
3,9 |
[m] |
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Fizelina |
- |
- |
- |
- |
- |
- |
- |
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H2= |
4,8 |
[m] |
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Styrodur |
0,1 |
6,3 |
8,1 |
0,450 |
2,296 |
1,2 |
2,756 |
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2xpapa termozgrzewalna |
- |
6,3 |
8,1 |
ewa:
ciężar w kN/m2
0,1 |
5,103 |
1,2 |
6,124 |
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γż |
25 |
[kN/m3] |
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Płyta żelbetowa |
0,13 |
6,3 |
8,1 |
25,000 |
165,848 |
1,1 |
182,432 |
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Żebro b=30cm |
ewa:
Szerokość żebra w metrach
0,3 |
ewa:
Wyskokość żebra minus wyskokość płyty żelbetowej z okienka wyżej
0,47 |
6,3 |
8,1 |
25,000 |
49,703 |
1,1 |
54,673 |
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Tynk cementowo-wapienny |
0,015 |
6,3 |
8,1 |
19,000 |
14,544 |
1,3 |
18,907 |
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SUMA |
380,377 |
- |
436,352 |
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Śnieg wg PN-EN 1993-1-1 |
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Obciążenie śniegiem |
- |
6,3 |
8,1 |
Sk= |
44,090 |
1,5 |
66,135 |
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Sk=mi*Ce*Ct*sk |
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SUMA |
424,467 |
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502,487 |
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sk |
ewa:
zależnie od strefy śniegowej PN-EN 1991-1-3 TAB N.B.1 str.4
0,9 |
Strefa śniegowa 2 |
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Obciążenie użytkowe |
- |
6,3 |
8,100 |
p1= |
280,665 |
1,2 |
336,798 |
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Ce |
ewa:
zależnie od warunków terenowych PN-EN 1991-1-3 TAB 5.1 str.15
1,2 |
Teren odsłonięty od wiatru. |
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SUMA |
705,132 |
- |
839,285 |
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Ct |
1 |
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g01 |
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mi |
ewa:
zależnie od kąta nachylenia PN-EN 1991-1-3 TAB 5.2 str.16
0,8 |
Dach jednopołaciowy. |
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Strop I-ej kondygnacji |
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Kąt nachylenia 5stopni |
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Rodzaj obciążenia |
Grubość [m] |
L1 [m] |
L2 [m] |
Ciężar [kN/m^3] |
gk |
γf |
g0 |
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Obciążenie użytkowe: |
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Posadzka betonowa |
0,05 |
6,3 |
8,1 |
24,000 |
61,236 |
1,2 |
73,483 |
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p1 |
5,5 |
[kN/m2] |
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Styropian |
0,04 |
6,3 |
8,1 |
0,450 |
0,919 |
1,2 |
1,102 |
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p2 |
7 |
[kN/m2] |
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Folia polietylenowa |
- |
- |
- |
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- |
- |
- |
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Płyta żelbetowa |
0,25 |
6,3 |
8,1 |
25,000 |
318,938 |
1,1 |
350,831 |
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Beton: |
c30/37 |
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Tynk cementowo wapienny |
0,015 |
6,3 |
8,1 |
19,000 |
14,544 |
1,3 |
18,907 |
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fcd |
20 |
[Mpa] |
20000 |
[kN/m2] |
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SUMA |
395,636 |
- |
444,323 |
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Obciążenie użytkowe |
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6,3 |
8,1 |
p2= |
357,210 |
1,2 |
428,652 |
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SUMA |
752,846 |
- |
872,975 |
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Stal |
AIII |
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go2 |
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fyd |
350 |
[Mpa] |
350000 |
[kN/m2] |
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g01+g02= |
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1712,260 |
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Wyznaczenie wymiarów słupa(bez uwzględnienia ciężaru słupa) |
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1,3N=fcd*bs*hs+0,01*bs*hs*fyd |
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N=g01+g02 |
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bs= |
0,30776737390853 |
m |
Zaokrąglić do pełnych 5cm w górę i sprawdzić czy szerkość żebra= szerokość słupa. |
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hs= |
bs= |
0,3 |
m |
Jeśli mniejsza przyjąć nową szerokość żebra równą szerokości słupa. |
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STOPA FUNDAMENTOWA |
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Siła działająca na stopę fundamentową = 1,3N: |
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2115 |
kN |
Różnice z 1536,971/1,3 wynikają z przybliżenia bs |
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Naprężenia pod stopą fundamentową |
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N/(B*L)=N(B*B) |
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N/(B^2)<=0,81*qf |
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B=L |
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Nośność gruntu 0,81*qf |
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qf= |
250 |
kPa |
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Szerokość ławy B= |
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3,23178657161089 |
m |
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Zaokrągl |
B=L |
3,3 |
m |
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ewa:
Powinna wyjść wartość z przedziału 40-60cm. Jeśli więcej wyjdzie, przyjąć 60cm.
Wysokość stopy hst |
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średnia: |
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~~ górna granica |
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0,9 |
1,05 |
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Sprawdzić czy mieści się w przedziale 40-60cm. |
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~~dolna granica |
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1,2 |
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Jeśli większa - przyjąć wysokość 60cm |
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Przyjęcie wysokości |
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0,6 |
m |
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PŁYTA KRZYŻOWO ZBROJONA |
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1.0.Geometria przekrojów |
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1.1. Płyta |
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*=swobodnie podparta |
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*=zamocowana |
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hf= |
0,13 |
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1.2.Żebro |
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*=hż |
0,6 |
wysokość żebra [m] |
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*=bż |
0,3 |
szerokość żebra [m] |
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2.0.Zebranie obciążeń |
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2.1. Obciążenia stałe g[kN/m2] |
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Rodzaj obciążenia |
Grubość [m] |
Ciężar [kN/m^3] |
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gk[kN/m2] |
γf |
g0[kN/m2] |
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Płyta chodnikowa |
0,05 |
24,000 |
1,200 |
1,2 |
1,440 |
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Kruszywo otoczakowe |
0,08 |
20,000 |
1,600 |
1,2 |
1,920 |
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Fizelina |
- |
- |
- |
- |
- |
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Styrodur |
0,1 |
0,450 |
0,045 |
1,2 |
0,054 |
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2xpapa termozgrzewalna |
- |
- |
0,100 |
1,2 |
0,120 |
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Płyta żelbetowa |
0,13 |
25,000 |
3,250 |
1,1 |
3,575 |
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Tynk cementowo wapienny |
0,015 |
19,000 |
0,285 |
1,3 |
0,371 |
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SUMA |
6,480 |
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7,480 |
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2.2. Obciążenie zmienne p{kN/m2] |
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Rodzaj obciążenia |
pk[kN/m2] |
γf |
p0[kN/m2] |
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Obciążenie użytkowe |
5,500 |
1,2 |
6,600 |
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Śnieg |
0,864 |
1,5 |
1,296 |
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SUMA |
6,364 |
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7,896 |
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3.0. Schemat statyczny |
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Wszystkie płyty pracują w schemacie 6 - zamocowanie na wszystkich krawędziach |
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lx= |
6,3 |
m |
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ly= |
8,1 |
m |
(dłuższy z boków) |
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4.0. Rozkład obciążenia na symetryczne i niestmetryczne |
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q'=g+0,5p |
11,4275 |
kN/m2 |
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q"=0,5p |
3,948 |
kN/m2 |
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q=q'+q" |
15,3755 |
kN/m2 |
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5.0. Wyznaczenie momentów zginających |
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Wartości współczynników dla poszczególnych płyt |
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ly/lx= |
1,28571428571429 |
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przyjmuję dla ly/lyx=1,3 |
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Płyta 1 |
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Płyta 6 |
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fi1x |
0,0587 |
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fi6x |
0,0271 |
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fi1y |
0,0206 |
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fi6y |
0,0095 |
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kappa1 |
0,708 |
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kappa6 |
0,741 |
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5.1. Momenty przęsłowe w polach środkowych (6) |
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M6x,max |
21,489 |
kNm/m |
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M6x,min |
3,093 |
kNm/m |
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M6y,max |
12,459 |
kNm/m |
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M6y,min |
1,787 |
kNm/m |
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5.2. Momenty przęsłowe w polach zewnętrznych (6) |
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Mab |
30,910 |
kNm/m |
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Mde |
17,902 |
kNm/m |
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5.3. Momenty podporowe w osiach podpór |
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Oś x-x |
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Ma płyta= |
-37,683 |
kNm/m |
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Ma= |
-18,842 |
kNm/m |
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PO REDUKCJI |
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Mb= |
-37,683 |
kNm/m |
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Mc=Mb |
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Oś y-y |
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Md płyta= |
-21,773 |
kNm/m |
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Md= |
-10,886 |
kNm/m |
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PO REDUKCJI |
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Me= |
-21,773 |
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Mf=Me |
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5.4. Momenty podporowe na krawędziach podpór(krawędziowe) |
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b= |
0,3 |
m |
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qx6,p |
11,393 |
kN/m2 |
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Ma,p |
-32,300 |
kNm/m |
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PO REDUKCJI |
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kNm/m |
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Mb,P=L |
-32,300 |
kNm/m |
bo jeśli narożnik inaczej, to z obu należy rozpatrzyć |
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11,393 |
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Md,D |
-12,432 |
kNm/m |
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PO REDUKCJI |
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Me,D |
-12,432 |
kNm/m |
bo jeśli narożnik inaczej, to z obu należy rozpatrzyć |
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6.0. Wymiarowanie zbrojenia |
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Dane materiałowe |
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Beton C30/37 |
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Ecm |
32 |
GPa |
3200000 |
kN/cm2 |
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fcd |
20 |
MPa |
2 |
kN/cm2 |
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fck |
30 |
MPa |
3 |
kN/cm2 |
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fctm |
2,9 |
MPa |
0,29 |
kN/cm2 |
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Stal AIII |
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fyd |
350 |
MPa |
35 |
kN/cm2 |
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fyk |
395 |
MPa |
39,5 |
kN/cm2 |
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Es |
200 |
GPa |
20000000 |
kN/cm2 |
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x |
0,53 |
[-] |
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6.1. Otulenie prętów zbrojenia |
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cmin= |
15 |
mm |
dla klasy ekspozycji XC1 oraz stali zwykłej |
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cmin= |
15 |
mm |
>= |
fi= |
10 |
mm |
spełniony |
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dg |
16 |
mm |
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5 |
mm |
dla elementów betonowanych na miejscu wbudowania |
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cnom |
20 |
mm |
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c= |
20 |
mm |
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6.2. Wysokość użyteczna przekroju |
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hf= |
0,13 |
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dx |
10,5 |
cm |
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dy |
9,5 |
cm |
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d'x |
15,5 |
cm |
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d'y |
14,5 |
cm |
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6.3. Minimalny przekrój zbrojenia podłuznego |
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b= |
100 |
cm |
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As1x,min |
2,00430379746835 |
|
2,004 |
cm2 |
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1,365 |
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As1y,min |
1,81341772151899 |
|
1,813 |
cm2 |
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1,235 |
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As1x',min |
2,95873417721519 |
|
2,959 |
cm2 |
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2,015 |
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As1y',min |
2,76784810126582 |
|
2,768 |
cm2 |
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1,885 |
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6.4. Wyznaczenie ilości potzrebnego zbrojenia |
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Maksymalny moment przęsłowy na kieunku x w płycie 6 |
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mi eff |
0,097457913 |
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ksi eff |
0,102735170643583 |
<= |
|
0,53 |
przekrój pojedynczo zbrojony |
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As1 |
6,16411023861498 |
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Wartości zbrojenia w obliczanych przekrojach |
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fi10: |
0,785398163397448 |
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|
Zbrojenie teoretyczne |
Zbrojenie przyjęte |
Rozstaw: |
Ile prętów |
Pole |
|
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|
|
Msd [kNm/m] |
d [cm] |
meff [-] |
xeff [-] |
As1 [cm2/m] |
As1,min [cm2/m] |
Rozstaw [cm/m] |
Ilość zbrojenia |
As1prov [cm2/m] |
rL[%] |
6 |
16,6666666666667 |
13,0899693899575 |
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|
9 |
11,1111111111111 |
8,72664625997165 |
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|
MAB |
30,910 |
10,5 |
0,140 |
0,151687066731858 |
9,101 |
2,004 |
8 |
|
9,817 |
0,93 |
12 |
8,33333333333333 |
6,54498469497874 |
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|
M6x,max=MBC |
21,489 |
10,5 |
0,097 |
0,103 |
6,164 |
2,004 |
12 |
|
6,545 |
0,62 |
15 |
6,66666666666667 |
5,23598775598299 |
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|
MDE |
17,902 |
9,5 |
0,099 |
0,105 |
5,681 |
1,813 |
12 |
|
6,545 |
0,69 |
18 |
5,55555555555556 |
4,36332312998582 |
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|
M6y,max=MEF |
12,459 |
9,5 |
0,069 |
0,072 |
3,886 |
1,813 |
12 |
----- |
6,545 |
0,69 |
21 |
4,76190476190476 |
3,73999125427356 |
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|
Ma |
18,842 |
15,5 |
0,039 |
0,040 |
3,544 |
2,959 |
16 |
|
4,909 |
0,32 |
24 |
4,16666666666667 |
3,27249234748937 |
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|
[Ma] |
16,150 |
10,5 |
0,073 |
0,076 |
4,568 |
2,004 |
16 |
|
4,909 |
0,47 |
8 |
12,5 |
9,8174770424681 |
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|
Mb |
37,683 |
15,5 |
0,078 |
0,082 |
7,242 |
2,959 |
8 |
|
9,817 |
0,63 |
10 |
10 |
7,85398163397448 |
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|
|
[Mb] |
32,300 |
10,5 |
0,146 |
0,159 |
9,549 |
2,004 |
8 |
|
9,817 |
0,93 |
14 |
7,14285714285714 |
5,60998688141035 |
|
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|
|
Md |
10,886 |
14,5 |
0,026 |
0,026 |
2,174 |
1,813 |
16 |
|
4,909 |
0,34 |
7 |
14,2857142857143 |
11,2199737628207 |
|
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|
|
[Md] |
6,216 |
9,5 |
0,034 |
0,035 |
1,903 |
2,768 |
16 |
|
4,909 |
0,52 |
16 |
6,25 |
4,90873852123405 |
|
|
|
|
|
Me |
21,773 |
14,5 |
0,052 |
0,053 |
4,407 |
1,813 |
16 |
|
4,909 |
0,34 |
|
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|
[Me] |
12,432 |
9,5 |
0,069 |
0,071 |
3,878 |
2,768 |
16 |
|
4,909 |
ewa:
trzeba wszytsko samemu przyjąć
0,52 |
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|
Rozstaw |
Góra |
8/12 |
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|
Dół |
12/24 |
8 |
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16 |
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|
ŻEBRO |
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|
Wysokości trapezów: |
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|
|
|
Obciążenie jakie będzie przyłożona na poszczególne sekcje: |
|
|
|
|
|
|
Obciążenia stałe |
[kN/m2] |
|
strop z żebrem |
|
|
|
|
h1 [m] |
3,994 |
|
|
żebro |
|
g |
p |
śnieg |
|
|
gk |
3,230 |
|
g0 |
3,905 |
|
|
|
|
h2 [m] |
3,15 |
|
|
|
h1 |
12,90 |
21,97 |
3,45 |
[kN/m] |
|
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|
|
h2 |
10,17 |
17,33 |
2,72 |
[kN/m] |
|
Obciążenie zmienne |
|
[kN/m2] |
|
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|
pk |
5,500 |
|
p0 |
6,600 |
|
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|
płyta |
|
g |
p |
|
|
|
śnieg |
0,864 |
|
śnieg0 |
1,296 |
|
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|
|
na długości 630 |
|
9,47 |
44,10 |
[kN/m] |
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|
Obciążenie stałe |
[kN/m2] |
|
strop płyta |
|
|
|
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|
gk |
1,503 |
|
g0 |
1,832 |
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|
obciążenie zmienne |
|
[kN/m2] |
|
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|
pk |
7,000 |
|
p0 |
8,400 |
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|
Wymiarowanie zbrojenia z uwagi na zginanie |
|
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|
1.0. Geometria |
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|
Wymiary żebra: |
|
hż |
0,6 |
[m] |
|
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|
|
bw |
0,3 |
[m] |
|
L[m] |
8,1 |
|
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|
hf |
0,13 |
[m] |
|
B[m] |
6,3 |
|
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|
Współpracująca szerokość płyty beff: |
|
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|
|
1. |
- dla przęsła skrajnego AB |
|
|
1,677 |
< |
1,86 |
|
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|
Przyjęte beff [m]: |
1,677 |
|
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|
2. |
- dla przęsła wewnętrznego BC |
|
|
|
|
1,434 |
< |
1,86 |
|
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|
|
Przyjęte beff [m] |
1,434 |
|
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|
3. |
- dla przęsła środkowego CD |
|
|
beff=bw+2*0,7*L/10 |
|
1,434 |
< |
1,86 |
|
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|
|
Przyjęte beff [m] |
|
1,434 |
|
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|
2.0. Dane materiałowe: |
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Beton C30/37 |
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Stal A-III |
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|
Ecm |
32 |
[GPa] |
3200000 |
[kN/cm2] |
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fyd |
350 |
[MPa] |
35 |
[kN/cm2] |
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fcd |
20 |
[MPa] |
2 |
[kN/cm2] |
|
fyk |
395 |
[MPa] |
39,5 |
[kN/cm2] |
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fck |
30 |
[MPa] |
3 |
[kN/cm2] |
|
Es |
200 |
[GPa] |
20000000 |
[kN/cm2] |
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fctm |
2,9 |
[MPa] |
0,29 |
[kN/cm2] |
|
ξeff,lim |
0,53 |
[-] |
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fctd |
1,33 |
[MPa] |
0,133 |
[kN/cm2] |
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3.0. Zebranie obciążeń: |
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3.1. Strop płyta - żebro |
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char. |
obl. |
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obciążenia stałe g: |
3,230 |
3,905 |
[kN/m2] |
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obciążenia zmienne p: |
5,500 |
6,600 |
[kN/m2] |
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śnieg: |
0,864 |
1,296 |
[kN/m2] |
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3.2. Strop płytowy: |
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char. |
obl. |
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obciążenia stałe g: |
1,503 |
1,832 |
[kN/m2] |
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obciążenia zmienne p: |
7,000 |
8,400 |
[kN/m2] |
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Zebranie obciążeń na poszczególne trapezy |
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(przemnożone przez wysokości poszczególnych trapezów) |
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Strop płyta-żebro |
Przęsło |
L |
gk |
γf |
g0 |
pk |
γf |
p0 |
Sk |
γf |
S0 |
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[m] |
[kN/m2] |
[-] |
[kN/m2] |
[kN/m] |
[-] |
[kN/m] |
[kN/m] |
[-] |
[kN/m] |
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między przęsłem 1-2 |
AB |
3,994 |
12,90 |
1,21 |
15,61 |
21,97 |
1,2 |
26,36 |
3,45 |
1,5 |
5,18 |
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BC |
3,994 |
12,90 |
1,21 |
15,61 |
21,97 |
1,2 |
26,36 |
3,45 |
1,5 |
5,18 |
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CD |
3,994 |
12,90 |
1,21 |
15,61 |
21,97 |
1,2 |
26,36 |
3,45 |
1,5 |
5,18 |
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DE |
3,994 |
12,90 |
1,21 |
15,61 |
21,97 |
1,2 |
26,36 |
3,45 |
1,5 |
5,18 |
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między przęsłem 2-3 |
AB |
3,15 |
10,17 |
1,21 |
12,31 |
17,33 |
1,2 |
20,79 |
2,72 |
1,5 |
4,08 |
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BC |
3,15 |
10,17 |
1,21 |
12,31 |
17,33 |
1,2 |
20,79 |
2,72 |
1,5 |
4,08 |
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CD |
3,15 |
10,17 |
1,21 |
12,31 |
17,33 |
1,2 |
20,79 |
2,72 |
1,5 |
4,08 |
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DE |
3,15 |
10,17 |
1,21 |
12,31 |
17,33 |
1,2 |
20,79 |
2,72 |
1,5 |
4,08 |
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Strop płyta |
Przęsło |
L |
gk |
γf |
g0 |
pk |
γf |
p0 |
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[m] |
[kN/m2] |
[-] |
[kN/m2] |
[kN/m] |
[-] |
[kN/m] |
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AB |
6,3 |
9,47 |
1,2 |
11,36 |
44,10 |
1,2 |
52,92 |
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BC |
6,3 |
9,47 |
1,2 |
11,36 |
44,10 |
1,2 |
52,92 |
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CD |
6,3 |
9,47 |
1,2 |
11,36 |
44,10 |
1,2 |
52,92 |
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DE |
6,3 |
9,47 |
1,2 |
11,36 |
44,10 |
1,2 |
52,92 |
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4.0. Siły wewnętrzne |
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Momenty zginające: |
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Siły tnące |
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Mab=Mde |
274,5 |
[kNm] |
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Va prawa |
100 |
[kN] |
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Mbc=Mcd |
100 |
[kNm] |
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Vb lewa |
100 |
[kN] |
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Mcd |
100 |
[kNm] |
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Vb prawa |
100 |
[kN] |
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Mb=Md |
100 |
[kNm] |
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Vc lewa |
100 |
[kN] |
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Mc |
100 |
[kNm] |
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5.0. Wymiarowanie zbrojanie z uwagi na zginanie |
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Pręty zbrojania głównego |
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Strzamiona |
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Stal |
A-III |
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Stal |
A-III |
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Średnica |
20 |
[mm] |
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Średnica |
8 |
[mm] |
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Pole |
3,142 |
[cm2] |
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Pole |
0,503 |
[cm2] |
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Otulenie prętów zbrojenia |
( Cnom=Cmin+ΔC ) |
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cmin |
15 |
[mm] |
warunek: |
warunek spełniony |
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dg |
16 |
[mm] |
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ΔC |
5 |
[mm] |
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Cnom |
20 |
[mm] |
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przyjęte C |
20 |
[mm] |
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Warunek Msd < Mf |
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Warunek ξeff < ξeff,lim |
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Warunek As1 > Aϕzbrojenia gł. |
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warunek spełniony, przekrój pozornie teowy |
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warunek spełniony, przekrój pojedyńczo zbrojony |
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warunek spełniony |
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warunek spełniony, przekrój pozornie teowy |
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warunek spełniony, przekrój pojedyńczo zbrojony |
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warunek spełniony |
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|
warunek spełniony, przekrój pozornie teowy |
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warunek spełniony, przekrój pojedyńczo zbrojony |
|
warunek spełniony |
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Wymiarowanie na momenty: |
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Moment |
beff |
bw |
h |
hf |
a1 |
a2 |
d |
Msd |
Mf |
μeff |
ξeff |
ξeff,lim |
As1 |
As1,min |
Ilość potrzebnych prętów |
Ilość zastosowanych prętów |
As1,prov |
[m] |
[m] |
[m] |
[m] |
[m] |
[m] |
[m] |
[kNm] |
[kNm] |
[-] |
[-] |
[-] |
[cm2] |
[cm2] |
[cm2] |
Mab |
1,677 |
0,3 |
0,6 |
0,13 |
0,038 |
0,05 |
0,562 |
274,5 |
1217,8649028 |
0,026 |
0,026 |
0,53 |
14,141 |
3,218 |
4,501 |
5 |
15,707963267949 |
Mbc |
1,434 |
0,3 |
0,6 |
0,13 |
0,038 |
0,05 |
0,562 |
100 |
1041,3943176 |
0,007 |
0,007 |
0,53 |
3,402 |
3,218 |
1,083 |
2 |
6,28318530717959 |
Mcd |
1,434 |
0,3 |
0,6 |
0,13 |
0,038 |
0,05 |
0,562 |
100 |
1041,3943176 |
0,076 |
0,079 |
0,53 |
36,508 |
3,218 |
11,621 |
12 |
37,6991118430775 |