GHID PENTRU CALCULUL LA ST.ARI LIMIT.A A ELEMENTELOR ...
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GHID PENTRU CALCULUL LA ST.ARI LIMIT.A A ELEMENTELOR
STRUCTURALE DIN LEMN INDICATIV NP 019-97
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I
II
CUPRINS
Generalitati. Prezentarea lucrarii
Prezentarea generala a nonnei de calcul la st.Ari limita. Notatii f/,i simboluri.
III Structuri de rezistenta tip f/,arpante
IV
V
pe sacune ..... . .
Structuri de reziatentii cu fenne din lemn
Planijee cu grinzi din lemn ....
ANEXA.
VI. Sinteza structuri i de rezistenta din lemn
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76
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GHID PENTRU CALCULUL LA STA.RI LIMIT.A A ELEMENTELOR
STRUCTURALE DIN LEMN
I. GENERALITATI
1.1. PREZENTARE
INDICATIV
NP 019-97
Stadiul avansat de elaborare a normativului de calcul ast.ructU1ilor din lemn (nivel de specificatie) care revizuie$te STAS 856-71 $i care prezinta importanLe modificari de fond $i completarifata de acesta din urma face indispensabila elaborarea unuighid care sa cuprinda:
materialul ajutator necesar aplicarii practice a noilor prescriptii; metode $i procedee rletaliate de calcul fa vederea satisfacerii ce1intelor de proiectare ale utilizatorilor.
1.2. BAZELE GHIDULUI DE PROIECTARE
Prezentul ghid de proiectare are la baza "Specificatie tehnica pentru proiectarea $i calculul constructiilor din lemn".
Principalele deosebiri in conceptia de calcul a elementelor $i structurilor din lemn cuprinse in prezentul ghid fata de principiile de calcul din STAS 856-71 sunt detaliate in capitolul II.
Beneficiul efectuarii calculelor conform specificatiei de calcul la stari limita a structurilor din lemn il prezinta alinierea acestei norme la modul de prezentare $i continutul normelor interne pentru calculul structurilor alcatuite din alte materiale (beton, metal) $i de asemenea ale normelor intemationale.
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