Comein

Calculation of the External Load-bearing Wall for Eccentric Compression

Objective: Check of the load-bearing capacity of an external wall.

Task: Check the capacity of masonry for eccentric compression.

References: Nasonov S.B. Manual for Design and Analysis of Building Structures. M: ASV Publishing House, 2013, p. 183-185.

Compliance with the codes: SP 15.13330.2012 

Initial data file:
Example 7.SAV
report – ComeIn 7 Nasonov.doc.

Initial data:

lo = 3,0 m Wall height
h = 380 mm Wall width
b = 1000 mm Length of a wall section without openings
N = 350 kN Design load on the wall
еo = 0,03 m Load eccentricity
Марка кирпича M150
Марка раствора M50

COMEIN initial data:

Importance factor  γn = 1

Importance factor (serviceability limit state)  = 1
Age of masonry - up to a year
Working life is 25 years
Stone/brick - Molded clay brick
Stone/brick grade - 150
Mortar - regular cement with mineral plasticizers
Mortar grade - 50
Specific weight of masonry 1,8 T/m3

Structure:

Clear storey height H = 3 m
Floor slab thickness t = 0,2 m
Wall thickness B = 0,38 m

Effective height

Precast floor slabs.
Distance between transverse rigid structures 6 m.
Effective height factor 0,9.

Loads along the wall length

Wind load q = 0 T/m2
Loads from the floor above the wall
Nэ  = 350 kN/m
Eэ  = 0,03 m
Factor for sustained load 1

Comparison of solutions:

Check

For eccentric compression in the upper section (under the floor slab)

Source

350/563,18 = 0,621

COMEIN

0,614

Deviation, %

1,1 %