[Rev. 2/10/2015 3:53:46 PM]
[NAC-452 Revised Date: 10-86]
452.010 “Class A construction” defined.
452.020 Construction of mausoleums: General requirements.
452.030 Class A construction required.
452.040 Footings.
452.050 Loads.
452.060 Walls.
452.070 Anchors.
452.080 Settings.
452.090 Mortar.
452.100 Pointings.
452.110 Bed joints.
452.120 Exterior veneering.
452.130 Roofs and skylights.
452.140 Fireproofing.
452.150 Construction of crypts.
NAC 452.010 “Class A construction” defined. As used in this chapter, a “Class A construction” means a building for which the stress of all external or internal loads or strains is transferred to the foundation by a reinforced concrete frame or by a skeleton or framework of steel, and the columns, beams and girders are riveted to each other at their respective junctures. Buildings not more than 25 feet in height and constructed of granite or marble will be considered Class A construction when they fulfill the provisions of this chapter.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.020 Construction of mausoleums: General requirements. No building or structure for use or intended to be used for the permanent interment of the remains of deceased persons may be constructed, and no building now constructed but not used for the permanent interment of the remains of deceased persons may be altered or changed for such a use unless constructed of such material and workmanship as will ensure their durability and permanence.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.030 Class A construction required.
1. All mausoleums or columbariums constructed after July 5, 1932, must be of a Class A construction.
2. All footings, bearing walls, beams, columns, floor slabs and other structural elements must be designed and constructed with a safety factor of four.
3. All floors must be designed for a live load of at least 100 pounds per square foot.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.040 Footings. Footings for any mausoleum or columbarium erected after July 5, 1932, must be made of concrete and reinforced with steel.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
1. All live and dead loads in a mausoleum or columbarium must be supported by the walls of columns connected directly to the footings.
2. The total load on footings may not exceed the safe soil bearing as determined by testing.
3. Footings must be designed for total loads, but relative sizes of footings must be governed by the dead loads only, with a proper reduction of the allowable soil-bearing value.
4. A crypt must be designed for a total load of 600 pounds. Such a load must be considered as a live load for the purposes of subsection 3.
5. Possible stresses from earthquakes must be considered in all structural designs.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
1. The wall of a mausoleum or columbarium which supports a load and is erected after July 5, 1932, must be constructed with only the following materials, used singly or in combination:
(a) Concrete;
(b) Cut stone;
(c) Cast stone;
(d) Granite; or
(e) Marble.
2. All of the materials must be reinforced, anchored and supported in such a manner as to ensure an enduring and lasting structure.
3. In any new building or in any alteration or addition to any existing building which is used for the permanent interment of the remains of deceased persons and which is constructed after July 5, 1932, all bearing walls must be made of granite, marble or reinforced concrete. If the building exceeds 25 feet in height, bearing walls must be made of reinforced concrete.
4. If any wall is constructed against a bank of earth, rock or other porous material, the exterior face of the wall above the footing must be thoroughly and efficiently waterproofed before backfilling is completed.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
1. Fastenings on hangers, clasps, clips, wires and doors and other fasteners must be made of brass, aluminum or copper of at least 22-gauge copper-bearing iron or steel.
2. The base, architraves, wainscoting and all other vertical work must be securely clamped to the backing with rods and heavy wire clips or other anchoring devices made of materials listed in subsection 1.
3. All case clips must be countersunk into the surface of a joint and set in plaster.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
1. Marble in a floor must be set in a full bed of nonstaining cement mortar, the proportion of cement to sand to be one to two, and tamped to a uniform bearing true to line.
2. All stone must be tamped to a uniform bearing true to line and set on an even bed of mortar. Lug sills and similar work exposed to uneven pressure must be bedded only at the ends.
3. Mortar joints must be of uniform thickness not more than three-sixteenths of an inch and must be raked out to a depth of three-quarters of an inch as the work progresses.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.090 Mortar. The mortar for setting all stonework must be composed of at least one part nonstaining Portland cement to three parts of clean, white, coarse sand, tempered with lime putty.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.100 Pointings. After stonework is completed, all joints must be brushed, cleaned thoroughly, wet and carefully filled with mortar, solidly packed and pointed. Mortar for pointing must be composed of one part lime putty, two parts white Monterey sand or its equivalent, and two parts nonstaining Portland cement.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.110 Bed joints. All bed joints must be accurately cut or sawed to true planes and must not contain a concave surface.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.120 Exterior veneering.
1. Cut stone or cast stone veneering must be at least 2 inches in thickness for all courses.
2. Marble veneering must be at least 1 1/2 inches in thickness for all courses.
3. Terra-cotta veneering must conform to standard practices.
4. All veneering must be bonded or tied to the structural steelwork and masonry. Corners, belt courses, copings, pilasters, bases, caps, sills, architraves, and other ornamental and special work which may have projecting parts must have sufficient bearing on the walls to balance independent of anchors.
5. Sills must extend at least 3 inches back of the windowsill and must have a fillet to receive the sills.
6. All veneering must be anchored by placing anchors with a 1/4-inch diameter at the top of each stone. These anchors must set into seats in the stone at least 1 inch in depth and must extend into the concrete at least 6 inches. The face of the concrete must be at least 3 inches back of the stone unless dowel anchors are used.
7. All dowel anchor slots must be made of 22-gauge copper-bearing galvanized iron.
8. There must be two anchors for each stone which are at least 1 1/2 feet long and one anchor for smaller stones. Anchors must be placed not more than 1 foot from the ends of the stone.
9. All anchors must be dipped in hot asphalt.
10. Facing closures on crypts are not considered exterior veneering and must be at least seven-eighths of an inch thick.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.130 Roofs and skylights.
1. The roof of every building used for the permanent interment of the remains of deceased persons must be constructed of reinforced concrete, granite, tile or marble. The upper surface of all roofs made of reinforced concrete must be covered with asphalt or other material which resists fires.
2. Frames for skylights must be made of galvanized iron which is not less than 24-gauge or copper. All joints must be riveted and soldered. All glass in skylights must be wireglass not less than one-fourth of an inch in thickness.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.140 Fireproofing. Every building, vault or structure used for the permanent interment of the remains of deceased persons must be constructed of noninflammable material and all steel work must be covered with at least 2 inches of concrete. Steel framework for elevators, windows, doors, skylights and other similar openings need not be encased in concrete, but must be treated with an efficient preservative.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]
NAC 452.150 Construction of crypts.
1. All walls of crypts, unless built of granite or marble, must be constructed of concrete mixed with a proportion of at least one part cement, two and one-half parts sand, and three and one-half parts crushed rock or screen gravel.
2. All walls must be at least 4 inches in thickness and must be reinforced with steel.
3. Floor slabs of crypts must be at least 3 inches and must be reinforced with steel to conform to the specifications of a Class A construction.
4. No crypt may be constructed to be subject to any of the load strains of the structure of the building, except where the walls of the crypt or niche intersect or are a part of structural walls.
5. In mausoleums where air ventilation is used and crypts are situated adjacent to the wall of an outside building below the ground, an air space at least 18 inches wide must be provided between the outside wall and the walls of the crypt. The air space must be supplied with ventilation and must have one or more doorways at least 15 inches wide and 5 feet high.
[Bd. of Health, part Mausoleum Reg., eff. 7-5-32]