2.2.3 KITCHEN MEMBRANE INSULATION
2.2.3.1 GENERAL
The waterproof membrane in a kitchen floor can be damaged by the intense heat
of a rack oven since these ovens rest directly on the floor. To protect the
membrane, provide an insulating concrete floor under rack ovens, or specify
the prefabricated insulated floor panel supplied by the oven manufacturer.
The floor, in each case, should be flush with the adjoining kitchen floor.
2.2.3.2 DRAWINGS
The design drawings must show details of the waterproof membrane, insulating
concrete or panels, the thermal break between the rack-oven floor slab and
the surrounding floor slab, and the structural support and anchors for the
rack ovens.
2.3 PIPE BASEMENTS
2.3.1 ANALYSIS OF NEED
Evaluate the use of full or partial pipe basements on an individual project
basis through a design analysis that indicates that a pipe basement is the
most efficient and economical method of adapting piping, duct, and electrical
conduit systems to the building.
2.3.2 DESIGN AND CONSTRUCTION
2.3.2.1 CLEARANCES
Design pipe basements to provide a minimum clearance of 1200 mm (4 ft.) under
pipes, ducts, and electrical conduits for access to these systems for
maintenance and repair.
2.3.2.2 ACCESS AND EGRESS
2.3.2.2.1 Provide access to the pipe basement at stairwells by means of
industrial stairs.
2.3.2.2.2 All areas of a pipe basement must have two means of egress.
Provide emergency egress to the exterior through the use of areaways where
necessary.
2.3.2.3 INSULATION
Insulate the exterior walls to prevent freezing temperatures in the pipe
basement for locations where outside winter design temperatures are -7
degrees C (20 degrees F) or below as given in the 99% column of Table 1,
ASHRAE Handbook- Fundamentals. See Article 5.4, Heating, Ventilation, and Air
Conditioning (HVAC) Design Manual for design climatic conditions.
2.3.3 HEATING AND VENTILATION
2.3.3.1 Provide thermostatically controlled mechanical ventilation to prevent
excessive rise in basement temperature and/or prevent moisture problems.
2.3.3.2 Provide intake louvers with dampers of sufficient size to satisfy fan
requirements.
2.3.3.3 Screen ventilators and louvered openings to prevent entry of insects
and small animals.
ARCHITECTURAL DESIGN MANUAL
2-2
SITEWORK, FOUNDATIONS, BASEMENTS, SLABS
Previous Page
