Embed Size (px)
Citation preview
Technical Sheet and Installation Guide
Autoclaved Aerated Concrete
1 Technical Sheet1.1 Hebel Board
2 Design Considerations2.1 General consideratins
3 Installation Guide3.1 General installation guidelines
3.2 Hebel Board installation
3.3 Cutting Hebel Board
4 Renders and Finishes4.1 Products
Index
Table 1: Physical and design properties.
Characteristic
(1) Values consider material’s moisture content.
Hebel BoardAAC-4
31 lb/ft3
37 lb/ft3
580 lb/in2
295,000 lb/in2
0.0024 in/ft
8 x 10 -6 1/0K
Nominal Density
Design Weigth (1)
Minimun Compressive Strength (f’c)
Module of Elasticity
Drying Shrinkage
Thermal Expansion Coeficient
Properties
3Hebel Aerated Concrete
1 TechnicalSheet1.1 Hebel Board
General Features
Hebel Board is an Autoclaved Aerated Concrete (AAC) and steel reinforced element. The steel wire reinforcement is Grade 70 and it’s covered with an anti-corrosive coating. Hebel Board can be cut and drilled with conventional tools.
Hebel Board is lightweight, fire resistant*, water penetration resistant**, pest resistant, fast and easy to install, versatile and affordable.
* Under ASTM E119** ASTM E514
Uses
Hebel Board can be used as cladding for internal and external load-bearing and non load-bearing walls in metal or wood frame construction. Appropriate for residential, hotels, commercial and industrial buildings.
Dimensions:
Thickness: (1)(3) 2 and 3 in.Length: (2) 8 and 10 ft.Width: 24 in.
(1) Tolerance + 1/8”, (2) Tolerance + 3/16”,(3) Nominal. Manufactured according to ASTM C1452.
Fig. 1: Hebel wall panels packaging.
Hebel Board 3”Wood Frame Assembly
Hebel Board 3”Metal Frame Assembly
Hebel BoardAAC-4/500
1
2
Fire RatingHrs
U358
V420
UL Design Number
UL Fire Resistence Directory
Note: Testing performed at Underwriters Laboratories, Inc. under ASTM E119 (ANSI/UL 263) “Fire Test Building Constructions and Materials”.
Table 4: Hebel Wall Panel fire rating.
Thickness (1)
* Exact dimension. (1) Nominal dimension.(2) Values consider material’s moisture content.
Length
ft
8
8
10
in
2
3
in*
1.969
2.953
Design Weight (2)
AAC-4
lb/ft2
6.14
9.22
9.22
lb/piece
98.4
147.7
181.6
Areaper Piece
ft2
16
16
20
Table 2: Hebel wall panel design weight.
Design Weight
Hebel Wall PanelsAAC-4
Thermal Conductivity
0.9124 BTU-in/ft2h0F
Thermal Properties
Table 3: Hebel Wall Panel Thermal Conductivity
Units: BTU=british thermal unit, in=inches, ft2=square feet, h=hour, 0F=Fahrenheit
Fire Performance
4 Hebel Aerated Concrete
3 Installation Guide3.1 General Installation
Guidelines
Before Installation ofHebel Board
1. Check the foundation:
- Make sure the slab foundationhas a brick ledge of:• 2” deep (min) and 2” wide
(max) for 2” Hebel Board(see Fig. 3a).
• 2” deep (min) and 3” wide(max) for 3” Hebel Board(see Fig. 3a).
- In case the foundation doesn’thave a brick ledge, install a continuos galvanized steel angle 2” x 2” x ¼” to support Hebel Board (see Fig. 3b).
- Check level of the brick ledge.
2. Check the structure:
- Verify the complete and properinstallation of all studs, trusses, lintels, bracing, reinforcing elements and connectors.
- Check plumb and alignment ofstuds of external walls.Studs (wood or metal) should not be spaced at more than 16 inches o.c. (please contact Xella’s technical department otherwise).
3. Check Hebel Board pallets:
- Carefully unload the Hebelpallets using an all terrain fork-lift. Flat surfaces are required for unloading and storage areas.
- Place Hebel Board pallets closeto their final position around the building and over wood blocks (panels must not be in contact with ground).
- Check Hebel Board quantity.
Fig. 2: Verify structure before Hebel Board installation.
2 Design Considerations2.1 General
considerations
- Hebel Board shall be designedin order to comply with safely and serviceability requirements as specified by ACI 523.4R-09.
- Hebel Board should be installedin horizontal position in a “running bond” pattern.
- The wind loads, according to theregion and Local Building Codes, will determine the number of screws required in each Hebel Board.
- Foundation should beconstructed with a brick ledge (see Fig. 3a) or by installing a galvanized steel angle(see Fig. 3b).
- A water-resistive barrier(Tyvek®, building felt or similar) should be installed on all wall areas before Hebel Board, windows and doors installation.
- Control joints may be verticaland horizontal and are placed to prevent random cracking due to thermal expansion, contraction and structural movements.
- Vertical control joints shouldbe spaced at 20 ft maximum from each other. The width of the vertical control joints should be 3/8” and should be sealed with backer rod and caulking.
- Horizontal control joints shouldbe placed for multi-story construction according to structural and seismic design.
- The width of the horizontalcontrol joint should be 5/8” for metal frame or 1” for wood frame, and should be sealed with backer rod and caulking.
5Hebel Aerated Concrete
Fig. 3: Typical cross section for Hebel Board wall.
Fig. 4: Place Hebel Board pallets close to job site.
Note: Technical support is available for builders and architects. Contact your Xella AAC Texas sales office for more information.
4. Check the utilities:
- Make sure that water pipes havebeen installed appropriately with all vertical runs located between the studs and not on the external face of the frame.
- Ensure hermetic water and gaspipes.
- Check for electrical conduits,phone lines, TV antenna, cable, dryer ventilation, etc.
5. Application Requirements:
Tools:
- Plastic Bucket- Masonry Level- Rubber Mallet (24 oz min)- Stirrer for Power Drill- Spatula- Chalk Line- Finishing Trowel- Sanding Float- Masonry Scrub Brush- Tape Measure
Equipment:
- Circular Saw (7¼” min) withmetal cutting blade for 2” Hebel Board.
- Circular Saw (10¼” min) withmetal cutting blade for 3” Hebel Board.
- D-Handle Drill ½” for fastening Hebel Board.
- Power Drill ½” (Low RPM) forStirrer.
- Screwdriving Bits (Phillips).- Clamps.- Safety Gear (goggles, dust mask,
gloves, apron, hard hat, etc.).
Additional material:
- Cement-Sand Mortar.- Screws #12 (see Table 5 for
specifications).- Hebel Thin Bed Mortar and
Hebel Repair Mortar.- Fiber Glass Mesh.- Weather-resistant barrier
and cramps-irons.- Anticorrosive Paint.- Base-coat, Stucco,
and Finish Coat.
InteriorSide
Water-Resistant Barrier
Reinforced Concrete Foundation
ExteriorSide
Hebel Board
2” (min)
Hebel BoardThickness
Water-Resistant Barrier
Reinforced Concrete Foundation
Hebel Board
2” (min)
GalvanizedSteel Angle
a)
b)
6 Hebel Aerated Concrete
3.2 Hebel BoardInstallation
a. Water-Resistant barrier
Wrapping the frame before Hebel Board installation is extremely important in preventing the build-up of moisture within the wall. Install it as a flashing under the Hebel Board before windows and doors are installed, extending it from the bottom to the top of the entire height of the wall and around corners. Overlap the roll following manufacturer instructions (see Fig.5).
Attach the water-resistant barrier with cramps-irons over wood or with self-drilling screws over metal studs.
b. Corner Board installation
The first and most important step in Hebel Board installation is placing the corner boards. The corner Hebel Board should be installed in horizontal position with a 2” or 3” overhang (depending on panel thickness), so it may remain flush with the other corner board (see Fig. 6).
It is important to check the level and alignment using a mason’s level. In case of uneven brick ledge, use a ½” of cement-sand mortar bed to ensure the level of the first Hebel Board (maximum bed thickness 1½”). Correct small alignment differences, using a rubber mallet.
For fastening Hebel Board use #12 screws (0.21in) as specified in Tables 5 and 6. Pre-drilling of holes is not required. Use a minimum of 2 fasteners (screws) per stud/ board (see Fig. 7 and 8). Excessive tightening can cause damage to Hebel Board, resulting in improper placement.
Fig. 5: Interior side of the water-resistant barrier.
Fig. 6: Overlap Hebel Board at corners.
Fig. 7: Use minimum 2 fasteners per stud / board.
Hebel Board
Thickness
2”
3”
#12 (2)
ScrewLength
3-1/4”
4-3/8”
Usable Thread Length
2-3/4”
3-1/2”
Penetration Length
(Minimum)
1-1/4”
1-3/8”
Shear(lb)
324
324
Pullout(lb)
270
297
(1) A 4.0 safety factor is considered.
(2) Screw #12 - Roofgrip by ITW-Buildex or similar.
Load Capacity (1)
Table 5: Screws specifications.
7Hebel Aerated Concrete
c. Subsequent Hebel Boards
The subsequent Hebel Boards should be mortared and fastened with the appropriate screws to ensure the best results. The Hebel Boards are placed in a running bond pattern using Hebel thin bed mortar to join all board edges and then screw boards firmly into place (see Fig. 8 and 9).
Hebel thin bed mortar is prepared in a plastic bucket, adding water and mortar from the bag (see instructions on the bag) and mixing it with a stirrer on a power drill. Remix before application. Use a brush to clean the joint surface before mortar application. Thin bed mortar is applied using a notched trowel over the horizontal and vertical joints before the next board installation.
Fig. 9: Hebel Board in a running bond pattern.
Fig. 8: Typical Hebel Board Wall System.
The number of screws per board shall be specified by the structural engineer but a minimum of 2 screws per stud must be used (see Tables 5 and 6).
Studs @ 16” o.c.
AAC Thin Bed Mortarat vertical and horizontal joints
#12 Screws (2 or 3 screws per stud array)
Hebel Board 6”4”
A
A
Wood Top Plate
#12 Screw
AAC Thin Bed Mortar
StudHebel Board
Typical Wall Section A-A
Min4”
2’-0”
Overhang 2” or 3” at corners (thickness of the Hebel Board around the corner).
Additional stud
Hebel Board
d. Two Story Building
In metal and wood frame construction, the upper Hebel Board can rest on the lower Board as high as 10 rows (20 ft) maximum.
e. Surface patching
Use Hebel Repair Mortar to patch chips, breaks and other imperfections on the external surface of the Hebel Board (see Fig. 10).
Hebel Repair Mortar is prepared in a plastic bucket, adding water and mortar from the bag (see instructions on the bag) and mixed with a stirrer and a power drill or by manual means (depending of quantity to be used). It is applied using a spatula.
f. Windows
The Hebel Board installed below the window should have a sloping sill site cut in the Board. The sill should have a slope of at least 15°.
8 Hebel Aerated Concrete
Fig. 10: Patch chips, screws heads and any other imperfections.
Fig. 11: Door or window openings.
Fig. 12: Completed installation of an external wall using Hebel Board.
Table 6: Allowable load capacity.
Allowable Axial Load Bearing Capacity ofHebel AAC Board (Shear Wall)
2’-0”
3’-4”
5’-4”
6’-8”
8’-0”
69
121518
Allowable loadcapacity perscrew (lb)2,3,4
Hebel Board2” 3”
Allowable loadcapacity perpanel (lb)1
Hebel Board 2” 3”537806
107513431612
8061209161220152418
89.6 134.3
1 Studs are considered to be at every 16".2 Maximum 3 screws per stud.3 Screws placed at 6" minimum distance O.C. and from panel edge for 2-screw / stud array and at 4" minimum distance O.C. from panel edge for 3-screw / stud array.4 Use of #12 screws are considered for the results shown in this chart.
PanelLength(ft-in)
Max. numberof screws
per panel 1,2
9Hebel Aerated Concrete
3.3 Cutting Hebel Board
All Hebel Board can be cut to fit window openings or frame heights. The width of the Hebel Board can be cut to a minimum of 12” along its length (except the bottom panel, to avoid breaks and waste (see Fig. 13 to 15).
Cutting procedures:
a) Prepare a flat surface forcutting site.
b) To support Hebel Board, woodpieces must be placed at the edges of the Panel. For transversal cuts, add wood pieces along the side of the cuts. For longitudinal cuts, add wood pieces to avoid cracking in the panel at every 30” (maximum).
c) Check for full contact betweenwood pieces and Hebel Board. Wedge if necessary.
d) Trace the cut dimension andplace a ruler as a guide.
e) Cut the Hebel Board using acircular saw with a metal cut blade (see application requirements).
Note: Hebel Board reinforcement exposed during the cutting process must be coated with any anticorrosive paint.
Caution: Use safety gear: Hard hat, gloves, dust mask and goggles to avoid excessive inhalation of dust and protection of the eyes when handling Hebel Board.
Fig. 14: Cutting Hebel Board using a circular saw.
Fig. 15: Hebel Board on exterior walls.
Fig. 13: Hebel Board circular wall.
10 Hebel Aerated Concrete
4 Renders and Finishes4.1 Products
Most finish systems for exterior AAC (Autoclaved Aerated Concrete) Hebel Board consist of three main components:base-coat or stucco, reinforcing mesh, and a finish coat. Additionally, Hebel Board exterior walls can be finished with laminated stones, ceramic or clay tiles, concrete pieces and ornamentals.
Surface preparation:Rasp joints and other areas where the AAC surface is out of plane to a smooth in-plane surface. Surface must be clean, free of dirt, oil and any other foreing matter. Loose or damaged material must be removed. Apply a tinted primer (acrylic based) in case of acrylic base-coats.
Base-Coat:Apply a layer (¼” thickness min) of Hebel stucco (cement-based or acrylic) or 1/8” min. of an acrylic base-coat (Sto AAC products or similar), according to manufacturer instructions.
Reinforce base-coat or Hebel stucco using fiber-glass mesh embedded in 100% of the surface area (see Fig. 16 and 17).
Finish Coat: Apply ready-mix acrylic based products as decorative and protective finish coat -top-coat- (Sto AAC products, acrylic textures or similar). Apply finish directly over the primed wall surface. Apply finish by spraying or troweling with a stainless steel trowel, depending on the finish specified (see Fig. 18to 20).
Fig. 17: Fiber glass mesh installation.
Fig. 18: Finished wall (base-coat and texture).
Fig. 16: Base-coat application.
11Hebel Aerated Concrete
Fig. 21: Hebel Board on exterior walls.
Fig. 19: Hebel Board residencial projects.
Fig. 20: Exterior and interior finish options on Hebel Board walls.
Base-Coat Options:Acrylic StuccoAcrylic Base-Coat Stucco Cement-based
Glass Fiber Mesh(embedded into base-coat or Stucco)
Finish Coat(Acrylic Paste)
EXTERIORFINISH
Cement-Sand MortarBase-Coat and Meshor Stucco Hebel and Mesh
AAC Mouldings
Openings(windows, doors)
3/8” gap between gypsum board and slab
Finish Coat(Acrylic Paste,
Paint, Wall Paper, etc.)
Gypsum Board(screwed directly
to Hebel Boardinterior wall)
2nd FloorHebel BoardInterior Wall
Hebel BoardExterior Wall
Frame
Thin Bed Adhesive into joint between
panels (wall thickness)
Exterior Wall
Interior Wall
INTERIORFINISH
Exterior Wall
Interior Wall
Oct
ober
200
9. P
rint
ed a
nd M
ade
in M
exic
o.Xe
lla a
nd H
ebel
are
reg
iste
red
trad
emar
ks o
f Xel
la G
roup
.
Xella Mexicana, S.A. de C.V.Río Amacuzac 1201 Ote.Col. Valle OrienteGarza García, NL 66269México
Tels +52 (81) 8399 2424, 64 y 62Fax +52 (81) 8399 2420 y 30
01 800 00 XELLA (93552)[email protected]
Manufacturing Facility:Carretera a Dulces Nombres Km 9.1Pesquería, NL 66650México
Tel +52 (81) 8369 1515Fax +52 (81) 8369 1520
Xella AAC Texas, Inc.
San Antonio Office:900 Schneider Dr.Cibolo, TX 78108USA
Tel (210) 402 3223Fax (210) 402 6390
1 888 SA XELLA (72 93552)[email protected]
Rio Grande Valley Office:700 East Expressway 83San Juan, TX 78589USA
Tel (956) 782 9065Fax (956) 782 9068
www.hebel.mxwww.xellamexicana.comwww.xellatexas.com
