14
Figure 21
CombustionAirAccess
RightorLeft(Rightshown).
Apply
mortar
Applymortar
SideWall
RearWall
SideWall
Whenyou have arranged all the components into place7)
andyou are working on the top rear rebox, check that
yourwork is level. If you need to, you can make some
adjustments in the top surface of the box assembly
simplyby using shims. Once you are satised with the
degreeof levelness, you can address any gap that may
have occurred with an appropriate amount of mortar.
Althoughyou are cautioned to use mortar sparingly
because it does have such holding power,you should
lookover the rebox assembly at the end and ll  any
gaps with mortar especially at joint connections.
Adjustmentsmustbemadetoensurethe replaceislevel
andsquarewhilethemortarisstillwet.
Afterfourthrow ofwallsare inplace,add 36”rebar toall8)
cellsas shown in Figure 22.Therebar should enter the
holesintheHearthandlieadjacenttothe12”rebarsecured
insuboor.Then llcells withapprox. 2cu.ft.Ready-Mix
Concrete. 
Figure 22
12inch
rebar
Addrebarafter
fourthrow
TemporarilyplaceLintelbetween sidewalls, makingsure9)
itis ush to the front and snug at the inside. Check for
alignment.RemoveLintelandapplymortaron surfacesto
bemated.InstallLintel.
InstallLowerRearDomeushtotherearwallsasshownin10)
Figure 23.    
Figure 23
Lintel
Lower
RearDome
 
11)Place Lower Side Domes between Lintel and Lower
RearDometoverifyt.Thefacewiththeratingplatefaces
theinsideof therebox asshownin Figure 24. Remove
andpreparematingsurfaceswithmortar.AssembleLower
DomeSidesandcheck thatallfourtop surfacesarelevel
witheachother.Shimifnecessary.
Figure 24 LowerDomeSides
(RatingPlatefacesinside)
12)NowinstalltheSmoke DomeTops.Alignouteredgeswith
LowerDomeSides.Checkforatnessandsquareness.
Figure 25