2. What is Masonry?
•Masonry consists of building structures from single units that
are laid and bound together with mortar. Brick, stone and
concrete blocks are the most common materials used in
masonry construction
3. Common types of concrete block
CONCRETE
HOLLOW BLOCK
CONCRETE FORM
BLOCK
ano po mas mahal? May cost comparison po ba kayo?ano po mas mabilis gawin? Si maam jessa po meron daw details nito
4. •A hollow concrete block is a block
made of concrete that has hollow
spaces between its walls.
•Min Compressive Strength?
•Dimensions -pag 4” ba eh 4”
talaga? San ginagamit yung 5”, 6”
•Types (ordinary, load bearing etc)
•Laying type (stack type, split type)
•Yan lang po ba shape nyan?
CONCRETE HOLLOW BLOCK
GENERAL CONCEPT
5. CONCRETE HOLLOW BLOCK
METHODOLOGY
Layout
1
Start masonry works by
rechecking layouts at every
point from grid lines. Look
for the markings.
Pls indicate plastering
consideration, thickness,
etc
6. Provide Zocallo
2
For toilet and bathroom
area.
BAKEEEEEETTTTTT?
Sa ibang site po wala chb
lang agad
CONCRETE HOLLOW BLOCK
METHODOLOGY
7. 0.6m on
center
Vertical DSRB and Stiffener
Column
3
Provide 12mm diameter
vertical reinforcements at
0.6m on center. It is
advisable to use stiffener
column every 3 meters
horizontal distance.
How about lintel beam po?
Kelan ako maglalagay?
CONCRETE HOLLOW BLOCK
METHODOLOGY
8. CHB Laying and Horizontal
DSRB
4
Lay CHB with cell holes
aligned at every three layers
to fill every hole with mortar
filler with a mixture of 1:2:4
ratio (1 cement, 2 bags of
sand and 4 bags of
“grabita”)
Paano po yung dugtungan
ng concrete column/beam
at CHB? Bucker rod? Rebar?
Sealant?
CONCRETE HOLLOW BLOCK
METHODOLOGY
Provide 12mm
diameter horizontal
reinforcements at
every 3rd layer of
laid CHB.
9. Plastering
5
Use Hard plastering guides, eg.
Plywood, wood or metal for
corners and openings during
plastering. Butones?
Total thickness of CHB wall
plaster is 16mm with a tolerance
of plus/minus 3mm.
Minimum? Maximum?
100mm chb wall in plastered
finish – 80mm po yung chb, kung
16mm kabilaan lalabas po
112mm na, pano po yun?
CONCRETE HOLLOW BLOCK
METHODOLOGY
12. •A concrete
block which act
as a permanent
form. form
blocks are best
for retaining wall,
party wall
(fencing), load
and non-load
bearing wall,
partition wall,
insulation wall,
shear wall.
•Pros and Cons
• Types
• Wts
• Specs
• Sizes
• Tools and
Equipment
Educate me
senpai
CONCRETE FORM BLOCK
GENERAL CONCEPT
13. CONCRETE FORM BLOCK
METHODOLOGY
Check Layout and Elevation
1
Start masonry works by
rechecking layouts and elevation
at every point from grid lines. Also
create a wall line for reference.
14. CONCRETE FORM BLOCK
METHODOLOGY
Mix a high slump concrete
2
Recommended ratio is 1:4:3
or 1:5:4
May gravel ba talaga
Ano strength ng ratio na to,
Ano reco na strength, sino
mas matigas sila ng chb?
Concrete po ba talaga? O
mortar lang?
15. Vertical DSB and form block
laying
3
Pour the highslump
concrete atleast 3/4th height
of the form block. Let it cure
for 5- 10 minutes then make
another layer. Always check
alignment. Vertical bar
space at every .6m
CONCRETE HOLLOW BLOCK
METHODOLOGY
16. Form block laying and
horizontal DSB
4
Provide a horizontal bar
every three layer. Let it cure
for 30-45 minutes prior
installation of the 4th layer.
CONCRETE HOLLOW BLOCK
METHODOLOGY
17. Concrete in fill
5
Use a steel rod to distribute
the concrete in fill evenly.
The Maximum laying is
limited to 7 layers.
Padiscuss po after, pano po
yung mga dugtungan, ano
po nilalagay
Paint na po ba agad to?
Skim coat muna? Plaster
muna? Pano po termination
sa kisame?
CONCRETE HOLLOW BLOCK
METHODOLOGY
